WO2020147239A1

WO2020147239A1 - Drive control circuit, air conditioner and controller

Info

Publication number: WO2020147239A1
Application number: PCT/CN2019/088669
Authority: WO
Inventors: 付兆强; 黄招彬; 文先仕
Original assignee: 广东美的制冷设备有限公司
Priority date: 2019-01-16
Filing date: 2019-05-27
Publication date: 2020-07-23
Also published as: JP7182719B2; JP2022517387A

Abstract

The present application provides a drive control circuit, an air conditioner and an air conditioner controller. The drive control circuit comprises an inverter bridge used for outputting a drive signal, the inverter bridge being connected in series between a high-voltage bus and a low-voltage bus. The control circuit further comprises: a reactor used for absorbing a surge signal generated during the operation of a load driven by the drive control circuit, the reactor being connected between a power grid and the load; and a bus capacitor used for filtering out the surge signal on a bus line, the bus capacitor being connected to the bus line at an input side of the inverter bridge. In the technical solution provided by the present invention, an electrolytic capacitor having high cost is replaced with a thin film capacitor having low cost, prolonging the service time of the drive control circuit, reducing the occurrence of control efficiency reduction caused by heating of the bus capacitor, and improving the reliability and operation efficiency of the drive control circuit.

Description

驱动控制电路、空调器和控制器Drive control circuit, air conditioner and controller

本申请要求于2019年01月16日提交中国专利局、申请号为201910041294.5、发明名称为“驱动控制电路和空调器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with application number 201910041294.5 and invention title "Drive Control Circuit and Air Conditioner" on January 16, 2019, the entire content of which is incorporated into this application by reference.

本申请要求于2019年01月16日提交中国专利局、申请号为201910041279.0、发明名称为“驱动控制电路、空调控制器及空调器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910041279.0, and the invention title is "drive control circuit, air conditioner controller and air conditioner" on January 16, 2019, the entire content of which is incorporated by reference In this application.

本申请要求于2019年01月16日提交中国专利局、申请号为201910041711.6、发明名称为“驱动控制电路、空调控制器和空调器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910041711.6, and the invention title is "drive control circuit, air conditioner controller and air conditioner" on January 16, 2019, the entire content of which is incorporated by reference In this application.

技术领域Technical field

本申请涉及压缩机控制技术领域，具体而言，涉及一种驱动控制电路、一种空调器、一种驱动控制电路、一种控制器、一种空调器、一种驱动控制电路、一种控制器和一种空调器。This application relates to the technical field of compressor control, in particular to a drive control circuit, an air conditioner, a drive control circuit, a controller, an air conditioner, a drive control circuit, and a control And a kind of air conditioner.

背景技术Background technique

一般来说，变频空调控制器大量采用AC-DC-AC(交流-直流-交流)拓扑结构，如图1所示，其中主要包括交流电源模块10’、电源滤波模块12’、整流模块14’、滤波模块16’、逆变模块18’及负载20’。Generally speaking, AC-DC-AC (AC-DC-AC) topology is widely used in inverter air conditioner controllers, as shown in Figure 1, which mainly include AC power supply module 10', power filter module 12', and rectifier module 14' , Filter module 16', inverter module 18' and load 20'.

一般地，由于滤波模块需要滤平整流后的工频信号，所以往往使用较大容量的电解电容作为主要滤波元件，如图2和图3所示，其中C2至C7均为滤波用电解电容。Generally, since the filter module needs to filter the rectified power frequency signal, a larger capacity electrolytic capacitor is often used as the main filter element, as shown in Figures 2 and 3, where C2 to C7 are all electrolytic capacitors for filtering.

然而，电解电容的使用会造成以下问题：However, the use of electrolytic capacitors will cause the following problems:

一、输入交流电流的THD(Total Harmonic Distortion，谐波失真)增大。1. The THD (Total Harmonic Distortion) of the input AC current increases.

二、电解电容的寿命较短，使用电解电容会影响控制器的极限寿命。2. The life of electrolytic capacitors is relatively short, and the use of electrolytic capacitors will affect the limit life of the controller.

三、电解电容的发热较大，会降低控制器效率，增加控制器热管理难度。3. The heating of the electrolytic capacitor is large, which will reduce the efficiency of the controller and increase the difficulty of thermal management of the controller.

四、电解电容的大量应用还会导致PCB(Printed Circuit Board，印刷电路板)上导致应力分布不均匀，且增加控制器整体重量。Fourth, the large number of applications of electrolytic capacitors will also cause uneven stress distribution on PCB (Printed Circuit Board) and increase the overall weight of the controller.

申请内容Application content

本申请旨在至少解决现有技术或相关技术中存在的技术问题之一。This application aims to solve at least one of the technical problems existing in the prior art or related technologies.

为此，本申请的第一方面提出一种驱动控制电路。For this reason, the first aspect of this application proposes a drive control circuit.

本申请的第二方面提出一种空调器。The second aspect of the application proposes an air conditioner.

本申请的第三方面提出一种驱动控制电路。The third aspect of the present application proposes a drive control circuit.

本申请的第四方面提出一种控制器。The fourth aspect of the present application proposes a controller.

本申请的第五方面提出一种空调器。The fifth aspect of the present application proposes an air conditioner.

本申请的第六方面提出一种驱动控制电路。The sixth aspect of the present application provides a drive control circuit.

本申请的第七方面提出一种控制器。The seventh aspect of the present application proposes a controller.

本申请的第八方面提出一种空调器。The eighth aspect of the present application proposes an air conditioner.

有鉴于此，本申请的第一方面提供了一种驱动控制电路，驱动控制电路包括：逆变桥，用于输出驱动信号，逆变桥接入于高压母线和低压母线之间；驱动控制电路还包括：电抗器，用于吸收驱动控制电路驱动负载运行过程中产生的浪涌信号，电抗器接入于电网和负载之间；母线电容，用于滤除母线线路上的浪涌信号，母线电容接入于逆变桥输入侧的母线线路中。In view of this, the first aspect of the present application provides a drive control circuit, the drive control circuit includes: an inverter bridge for outputting drive signals, the inverter bridge is connected between the high-voltage bus and the low-voltage bus; the drive control circuit It also includes: reactor, used to absorb the surge signal generated during the operation of the drive control circuit to drive the load, the reactor is connected between the grid and the load; bus capacitor, used to filter the surge signal on the bus line, bus The capacitor is connected to the bus line on the input side of the inverter bridge.

在该技术方案中，驱动控制电路中设置有电抗器，电抗器用于吸收驱动控制电路驱动负载运行过程中产生的浪涌信号，以提高驱动控制电路的抗浪涌能力；其中，电抗器与母线电容的谐振频率固定为

其中L为电抗器的电感值，C为母线电容的容值，可有效防止由于分布电感电容参数导致谐振频率不固定的情况。同时，选择容值较低的母线电容代替传统的电解电容，具体选用薄膜电容作为母线上的母线电容，薄膜电容并联于逆变桥的输入侧，串联在所述高压母线和低压母线之间，用于滤除母线上的浪涌信号。应用了本申请提供的技术方案，通过使用成本较为低廉的薄膜电容替代成本高昂的电解电容，有效地降低了生产成本；薄膜电容的寿命可达6250小时，远大于一般的电解电容的2000小时，因此可有效提高驱动控制电路的寿命。同时，薄膜电容的ESR(等效串联电阻)较小，在相同的波纹电流影响下，薄膜电容的发热量远小于电解电容，因此也可以有效的避免由于母线电容发热导致控制效率降低的问题出现，提高了驱动控制电路的可靠性和工作效率。 In this technical solution, a reactor is provided in the drive control circuit, and the reactor is used to absorb the surge signal generated during the operation of the drive control circuit to drive the load to improve the surge resistance of the drive control circuit; among them, the reactor and the bus The resonant frequency of the capacitor is fixed at

Among them, L is the inductance value of the reactor, and C is the capacitance value of the bus capacitor, which can effectively prevent the situation where the resonance frequency is not fixed due to the distributed inductance and capacitance parameters. At the same time, choose a bus capacitor with a lower capacitance to replace the traditional electrolytic capacitor. Specifically, a thin film capacitor is selected as the bus capacitor on the bus. The thin film capacitor is connected in parallel to the input side of the inverter bridge and connected in series between the high voltage bus and the low voltage bus. Used to filter out surge signals on the bus. Applying the technical solution provided by this application, by using relatively low-cost film capacitors to replace expensive electrolytic capacitors, the production cost is effectively reduced; the life of film capacitors can reach 6,250 hours, which is much longer than the 2000 hours of ordinary electrolytic capacitors. Therefore, the life of the drive control circuit can be effectively increased. At the same time, the ESR (Equivalent Series Resistance) of the film capacitor is small. Under the influence of the same ripple current, the heat generation of the film capacitor is much smaller than that of the electrolytic capacitor, so it can also effectively avoid the problem of reduced control efficiency due to the heating of the bus capacitor. , Improve the reliability and work efficiency of the drive control circuit.

可选地，驱动控制电路还包括：限流电路，用于限制首次上电时母线电容的充电电流，限流电路串联在高压母线上。Optionally, the drive control circuit further includes: a current-limiting circuit for limiting the charging current of the bus capacitor at the first power-on, and the current-limiting circuit is connected in series to the high-voltage bus.

由于选用的母线电容的容值较低，因此当存在浪涌电压时，由于小容量的薄膜电容无法吸收过多的能量，此时当母线电压高于浪涌吸收电容端电压时，限流电路生效并限制上电时母线电容的充电电流，以防止母线电容被过电流击穿。Due to the low capacitance of the selected bus capacitor, when there is a surge voltage, the small-capacity film capacitor cannot absorb too much energy. At this time, when the bus voltage is higher than the surge absorption capacitor terminal voltage, the current limiting circuit Take effect and limit the charging current of the bus capacitor at power-on to prevent the bus capacitor from being broken down by overcurrent.

可选地，限流电路包括：温敏电阻，用于限制首次上电时母线电容的充电电流，温敏电阻串联在高压母线上；继电器，用于控制接入第一阻性元件以进行限流或短接第一阻性元件以停止限流，继电器并联在温敏电阻的两端。Optionally, the current-limiting circuit includes: a temperature-sensitive resistor, used to limit the charging current of the bus capacitor at the first power-on, the temperature-sensitive resistor is connected in series with the high-voltage bus; a relay, used to control the access of the first resistive element for limiting Current or short-circuit the first resistive element to stop current limiting, and the relay is connected in parallel at both ends of the temperature-sensitive resistor.

在高压母线上出现浪涌信号时，温敏电阻会限制首次上电时母线电容的充电电流，进而确保母线电容不被击穿，同时温敏电阻的阻值随着温度线性变化，进而实现对充电电流的上升速度进行限制。在温敏电阻两端并联继电器，继而形成一个具有开关特征的温敏电阻，在驱动控制电路首次上电时，继电器处于断开状态，第一温敏电阻和母线电容来吸收来自交流供电侧的浪涌信号，在首次上电之后，高压母线上的电流不是很大的情况下，第一继电器闭合，进而降低第一温敏电阻对高压母线的限流作用。When a surge signal appears on the high-voltage bus, the temperature-sensitive resistor will limit the charging current of the bus capacitor at the first power-on, so as to ensure that the bus capacitor is not broken down. At the same time, the resistance of the temperature-sensitive resistor changes linearly with the temperature to achieve the The rising speed of the charging current is limited. The relay is connected in parallel at both ends of the temperature-sensitive resistor to form a temperature-sensitive resistor with switching characteristics. When the drive control circuit is powered on for the first time, the relay is in an off state. The first temperature-sensitive resistor and the bus capacitor absorb the power from the AC power supply side. In the surge signal, after the first power-on, when the current on the high-voltage bus is not very large, the first relay is closed, thereby reducing the current limiting effect of the first temperature-sensitive resistor on the high-voltage bus.

根据本申请的上述实施例的驱动控制电路，还可以具有以下技术特征：The drive control circuit according to the above-mentioned embodiment of the present application may also have the following technical features:

在上述任一技术方案中，进一步地，驱动控制电路还包括：第一吸收电路，用于吸收母线线路上的浪涌信号，第一吸收电路接入于母线电容与逆变桥之间。In any of the above technical solutions, further, the drive control circuit further includes: a first absorption circuit for absorbing the surge signal on the bus line, and the first absorption circuit is connected between the bus capacitor and the inverter bridge.

在该技术方案中，对于母线电容选用薄膜电容的情况，当电路中存在浪涌电压时，由于薄膜电容无法吸收过多的浪涌能量，通过设置第一吸收电路接入于母线电容与逆变桥之间，以辅助母线电容吸收逆变桥侧母线线路上的浪涌信号，以防止母线电容被浪涌信号击穿。In this technical solution, for the case of using film capacitors for bus capacitors, when there is a surge voltage in the circuit, since the film capacitors cannot absorb too much surge energy, the first absorption circuit is set to connect to the bus capacitor and inverter. Between the bridges, the auxiliary bus capacitor is used to absorb the surge signal on the bus line on the side of the inverter bridge to prevent the bus capacitor from being broken down by the surge signal.

在上述任一技术方案中，进一步地，第一吸收电路包括：阻性吸收元件，用于吸收浪涌信号，阻性吸收元件与所述母线电容并联；第一开关元件，用于调控阻性吸收元件吸收浪涌信号的过程，第一开关元件与阻性吸收元件相串联，第一开关元件导通时，阻性吸收元件吸收浪涌信号，第一开关元件截止时，阻性吸收元件停止吸收浪涌信号。In any of the above technical solutions, further, the first absorbing circuit includes: a resistive absorbing element for absorbing the surge signal, the resistive absorbing element is connected in parallel with the bus capacitor; and the first switching element is for adjusting the resistance The process in which the absorbing element absorbs the surge signal. The first switching element is connected in series with the resistive absorbing element. When the first switching element is turned on, the resistive absorbing element absorbs the surge signal. When the first switching element is turned off, the resistive absorbing element stops Absorb the surge signal.

在该技术方案中，第一吸收电路包括阻性吸收元件，阻性吸收元件用于吸收母线电容靠近逆变桥一侧的浪涌信号。具体地，第一开关元件导通，阻性吸收元件接入驱动控制电路并吸收浪涌信号，具体地，阻性吸收元件将浪涌信号的电能转化为热能并释放，以消耗掉浪涌信号，避免因更换容值较小的薄膜电容导致的母线电容被浪涌信号击穿损坏。当母线上的浪涌信号降低或消失后，第一开关元件截止，阻性吸收元件从驱动控制电路中断离，以避免对吸收控制电路中正常的电信号产生影响。In this technical solution, the first absorption circuit includes a resistive absorption element, and the resistive absorption element is used for absorbing the surge signal on the side of the bus capacitor close to the inverter bridge. Specifically, the first switching element is turned on, and the resistive absorption element is connected to the drive control circuit and absorbs the surge signal. Specifically, the resistive absorption element converts the electrical energy of the surge signal into heat energy and releases it to consume the surge signal , To prevent the bus capacitor from being broken down by the surge signal caused by replacing the film capacitor with a smaller capacitance value. When the surge signal on the bus bar decreases or disappears, the first switch element is turned off, and the resistive absorption element is disconnected from the drive control circuit, so as to avoid affecting the normal electrical signal in the absorption control circuit.

在上述任一技术方案中，进一步地，阻性吸收元件包括：第一电阻，用于吸收浪涌信号，第一电阻与第一开关元件串联连接，第一电阻的阻值与预设的母线电压保护阈值相对应；和/或第一电阻的阻值与预设的第一开关元件的过电流保护阈值相对应。In any of the above technical solutions, further, the resistive absorption element includes: a first resistor for absorbing a surge signal, the first resistor is connected in series with the first switching element, and the resistance of the first resistor is connected to a preset bus The voltage protection threshold corresponds to; and/or the resistance of the first resistor corresponds to the preset overcurrent protection threshold of the first switching element.

在该技术方案中，阻性吸收元件包括第一电阻，第一电阻与第一开关元件串联连接，当第一开关元件导通时，第一吸收电路导通，浪涌信号被第一电阻吸收；当第一开关元件截止时，第一吸收电路断开，第一电阻不再吸收驱动控制电路中的电信号。具体地，第一电阻的阻值及功率与预设的母线电压保护阈值及预设的第一开关元件的过电流值和吸收的功率需求相对应，以确保阻性吸收元件对浪涌的吸收效果。其中，电压保护阈值和电流保护阈值与驱动电路中各元器件出厂标定的所能承受的电压值和电流值相关。In this technical solution, the resistive absorbing element includes a first resistor, and the first resistor is connected in series with the first switching element. When the first switching element is turned on, the first absorbing circuit is turned on, and the surge signal is absorbed by the first resistor. ; When the first switching element is turned off, the first absorption circuit is disconnected, and the first resistor no longer absorbs the electrical signal in the drive control circuit. Specifically, the resistance and power of the first resistor correspond to the preset bus voltage protection threshold and the preset overcurrent value of the first switching element and the absorbed power demand to ensure that the resistive absorption element absorbs the surge effect. Among them, the voltage protection threshold and the current protection threshold are related to the voltage and current values that each component in the drive circuit can withstand when they are factory-calibrated.

在上述任一技术方案中，进一步地，阻性吸收元件包括：第一单相导通元件，与第一电阻相并联，第一单相导通元件的导通方向与流经第一电阻的电流方向相反。In any of the above technical solutions, further, the resistive absorbing element includes: a first single-phase conduction element connected in parallel with the first resistor, and the conduction direction of the first single-phase conduction element is the same as that flowing through the first resistor. The direction of current is opposite.

在该技术方案中，在第一电阻的两端并联第一单向导通元件，具体地，第一单向导通元件为二极管，用于形成第一电阻的自感电压释放回路，防止第一电阻上产生的自感电压对第一开关元件的可靠性产生影响。In this technical solution, a first unidirectional conducting element is connected in parallel at both ends of the first resistor. Specifically, the first uniconducting element is a diode, which is used to form a self-inductance voltage release loop of the first resistor to prevent the first resistor from The self-inductance voltage generated on the first switching element affects the reliability of the first switching element.

可选地，第一电阻为有感电阻。Optionally, the first resistor is an inductive resistor.

可选地，第一单相导通元件的导通方向与第一电阻中的电流方向相反。Optionally, the conduction direction of the first single-phase conduction element is opposite to the direction of the current in the first resistor.

在上述任一技术方案中，进一步地，驱动控制电路还包括：第二吸收电路，用于吸收高压母线和低压母线上的浪涌信号，第二吸收电路包括：容性吸收元件，用于吸收浪涌信号，容性吸收元件与母线电容并联；第二单向导通元件，用于调控容性吸收元件对浪涌信号的吸收过程，第二单向导通元件与容性吸收元件相串联。In any of the above technical solutions, further, the drive control circuit further includes: a second absorption circuit for absorbing surge signals on the high-voltage bus and the low-voltage bus, and the second absorption circuit includes: a capacitive absorption element for absorbing For the surge signal, the capacitive absorption element is connected in parallel with the bus capacitor; the second unidirectional conduction element is used to regulate the absorption process of the surge signal by the capacitive absorption element, and the second unidirectional conduction element is connected in series with the capacitive absorption element.

在该技术方案中，第二吸收电路包括与母线电容并联的容性吸收元件，通过容性吸收元件吸收母线上的浪涌信号，还包括与容性吸收元件串联的第二单向导通元件。具体地，容性吸收元件具有容性，容性吸收元件用于限制容性吸收元件对浪涌信号的吸收过程，使得容性吸收元件只能吸收高压母线上的浪涌信号，即通过单向导通元件的设置，将母线电容与容性吸收元件进行区分，避免了将容性吸收元件作为母线电容使用，降低了容性吸收元件的使用频次，提高了第二吸收电路的寿命。In this technical solution, the second absorbing circuit includes a capacitive absorbing element connected in parallel with the bus capacitor, the surge signal on the bus is absorbed by the capacitive absorbing element, and a second unidirectional conducting element connected in series with the capacitive absorbing element. Specifically, the capacitive absorbing element is capacitive, and the capacitive absorbing element is used to limit the absorbing process of the capacitive absorbing element to the surge signal, so that the capacitive absorbing element can only absorb the surge signal on the high-voltage bus, that is, through the unidirectional guide The arrangement of the pass element distinguishes the bus capacitance from the capacitive absorption element, avoids using the capacitive absorption element as the bus capacitance, reduces the frequency of use of the capacitive absorption element, and improves the life of the second absorption circuit.

在上述任一技术方案中，进一步地，容性吸收元件包括至少一个电容，或多个串联和/或并联的电容，第二吸收电路还包括：第二电阻，用于吸收第一容性元件中的浪涌信号，第二电阻与电容并联。In any of the above technical solutions, further, the capacitive absorption element includes at least one capacitor, or multiple capacitors connected in series and/or in parallel, and the second absorption circuit further includes: a second resistor for absorbing the first capacitive element In the surge signal, the second resistor is connected in parallel with the capacitor.

在该技术方案中，容性吸收元件包括用于吸收浪涌信号的一个或多个电容，多个电容相互串联和/或相互并联，并设置有与电容并联的第二电阻，利用设置与电容并联的第二电阻来吸收电容中的浪涌信号，第二电阻的设置提高了驱动控制电路的可靠性。In this technical solution, the capacitive absorption element includes one or more capacitors for absorbing the surge signal, and the multiple capacitors are connected in series and/or in parallel with each other, and a second resistor connected in parallel with the capacitor is provided. The second resistor is connected in parallel to absorb the surge signal in the capacitor, and the setting of the second resistor improves the reliability of the drive control circuit.

可选地，第二吸收电路和第一吸收电路可同时设置或择一单独设置，在第二吸收电路和第一吸收电路同时设置时，第二吸收电路和第一吸收电路相并联。Optionally, the second absorbing circuit and the first absorbing circuit can be provided at the same time or alternatively and separately. When the second absorbing circuit and the first absorbing circuit are provided at the same time, the second absorbing circuit and the first absorbing circuit are connected in parallel.

在上述任一技术方案中，进一步地，第二吸收电路还包括：限流电阻，用于限制流经容性吸收元件的电流，限流电阻与容性吸收元件串联。In any of the above technical solutions, further, the second absorbing circuit further includes: a current limiting resistor for limiting the current flowing through the capacitive absorbing element, and the current limiting resistor is connected in series with the capacitive absorbing element.

在该技术方案中，第二吸收电路设置有限流电阻，限流电阻与容性吸收元件串联，用于限制在上电时流经容性吸收元件的电流，将容性吸收元件的充电电流限制在规定的范围内，防止容性吸收元件被过流击穿。In this technical solution, the second absorbing circuit is provided with a current limiting resistor, and the current limiting resistor is connected in series with the capacitive absorbing element to limit the current flowing through the capacitive absorbing element when it is powered on, and to limit the charging current of the capacitive absorbing element Within the specified range, prevent the capacitive absorption element from being broken down by overcurrent.

在上述任一技术方案中，进一步地，驱动控制电路还包括：第四电阻，用于吸收电抗器上产生的振荡信号，第四电阻与电抗器并联。In any of the above technical solutions, further, the drive control circuit further includes: a fourth resistor for absorbing the oscillating signal generated on the reactor, and the fourth resistor is connected in parallel with the reactor.

在该技术方案中，在电抗器的两端并联第四电阻，以吸收电抗器上产生的振荡信号，具体地，第四电阻增加了***阻尼，其阻值小于200欧，当母线电容为薄膜电容时，设置第四电阻可以提高***稳定性。In this technical solution, a fourth resistor is connected in parallel at both ends of the reactor to absorb the oscillating signal generated on the reactor. Specifically, the fourth resistor increases the damping of the system, and its resistance is less than 200 ohms. When the bus capacitor is a thin film When the capacitor is used, setting the fourth resistor can improve the system stability.

在上述任一技术方案中，进一步地，驱动控制电路还包括：采样控制电路，与第一开关元件相连接，采样控制电路用于采集驱动控制电路的供电信号，根据供电信号控制第一开关元件导通或截止；其中，供电信号包括驱动控制电路交流测的供电信号和母线线路的供电信号。In any of the above technical solutions, further, the drive control circuit further includes: a sampling control circuit connected to the first switching element, the sampling control circuit is used to collect the power supply signal of the drive control circuit, and control the first switching element according to the power supply signal On or off; where the power supply signal includes the power supply signal measured by the drive control circuit and the power supply signal of the bus line.

在该技术方案中，驱动控制电路中设置有采样电路，采样电路采集根据电路交流测的供电信号和/或所述母线线路的供电信号，根据供电信号的电压幅值控制第一开关元件导通或截止，进而控制第一吸收电路对浪涌信号的吸收过程。In this technical solution, a sampling circuit is provided in the drive control circuit. The sampling circuit collects the power supply signal measured by the circuit and/or the power supply signal of the bus line, and controls the first switching element to be turned on according to the voltage amplitude of the power supply signal. Or cut off to control the absorbing process of the surge signal by the first absorbing circuit.

本申请的第二方面提供了一种空调器，包括：电机；以及如上述任一技术方案所述的驱动控制电路，所述电机的信号输入端连接至所述驱动控制电路，所述驱动控制电路输出的驱动信号用于驱动所述电机运行。因此该空调器具有上述任一实施例所述的驱动控制电路的全部有益效果，在此不再赘述。A second aspect of the present application provides an air conditioner, including: a motor; and the drive control circuit according to any one of the above technical solutions, the signal input end of the motor is connected to the drive control circuit, and the drive control The drive signal output by the circuit is used to drive the motor to run. Therefore, the air conditioner has all the beneficial effects of the drive control circuit described in any of the above embodiments, and will not be repeated here.

本申请的第三方面提供了一种驱动控制电路，包括：逆变桥，逆变桥用于输出驱动信号，逆变桥接入于高压母线和低压母线之间；电抗器，用于吸收驱动控制电路驱动负载运行过程中产生的浪涌信号，电抗器接入于电网和负载之间；母线电容，母线电容用于提供负载上电所需的启动电压，母线电容还用于吸收浪涌信号，母线电容接入于逆变桥输入侧的母线线路中；第一阻性元件和第二开关元件，第二开关元件被配置为控制第一阻性元件吸收浪涌信号，第一阻性元件和第二开关元件串联后串接在高压母线和低压母线之间；单向导通元件或第三开关元件；第一容性元件，单向导通元件或第三开关元件被配置为限制第一容性元件吸收高压母线上的浪涌信号，单向导通元件或第三开关元件与第一容性元件串联后串接在高压母线和低压母线之间；控制芯片，控制芯片与第二开关元件相连接，其中，控制芯片根据母线信号与电压阈值的大小关系控制第一阻性元件工作。The third aspect of the present application provides a drive control circuit, including: an inverter bridge, the inverter bridge is used to output drive signals, the inverter bridge is connected between the high-voltage bus and the low-voltage bus; the reactor is used to absorb drive The control circuit drives the surge signal generated during the operation of the load, the reactor is connected between the grid and the load; the bus capacitor, the bus capacitor is used to provide the starting voltage required by the load, and the bus capacitor is also used to absorb the surge signal , The bus capacitor is connected to the bus line on the input side of the inverter bridge; the first resistive element and the second switching element, the second switching element is configured to control the first resistive element to absorb the surge signal, the first resistive element And the second switching element are connected in series between the high-voltage bus and the low-voltage bus; the one-way conducting element or the third switching element; the first capacitive element, the one-way conducting element or the third switching element are configured to limit the first capacitance The electrical component absorbs the surge signal on the high-voltage bus, the unidirectional conduction element or the third switching element is connected in series with the first capacitive element and then connected in series between the high-voltage bus and the low-voltage bus; the control chip, the control chip and the second switching element Connected, wherein the control chip controls the operation of the first resistive element according to the magnitude relationship between the bus signal and the voltage threshold.

根据本申请的实施例的驱动控制电路，包括：逆变桥、母线电容、电抗器，其中逆变桥驱动控制负载运行，如：控制电机运行，由于母线电容的容值较低，因此在高压母线上形成的浪涌信号无法确保完全吸收，通过设置电抗器来吸收驱动控制电路驱动负载运行过程中产生的浪涌信号，同时也对电源输入信号进行滤波，使得来自逆变桥一侧和瞬时停机时电抗器续流的浪涌信号经由单向导通元件或第三开关元件与第一容性元件组成的第一吸收路径进行释放，实现对浪涌信号的控制，同时确保母线上的浪涌信号被吸收，还设置第一阻性元件和第二开关元件构成的第二吸收路径来对浪涌信号进行吸收，具体地，控制芯片根据母线信号与电压阈值的大小关系控制第一阻性元件是否吸收浪涌信号，第一吸收路径和第二吸收路径的设置提高了电路中的浪涌信号的吸收能力，提高了电路的可靠性，其中，单向导通元件可以是具有单向导通特性的元件，诸如二极管等。The drive control circuit according to the embodiment of the present application includes: an inverter bridge, a bus capacitor, and a reactor. The inverter bridge drives and controls the operation of the load, such as controlling the operation of the motor. Because the capacitance of the bus capacitor is low, The surge signal formed on the bus cannot be completely absorbed. A reactor is set to absorb the surge signal generated during the operation of the drive control circuit to drive the load. At the same time, the power input signal is also filtered to make it come from the inverter bridge side and instantaneously. When the reactor is stopped, the continuous current surge signal of the reactor is released through the first absorption path composed of the unidirectional conducting element or the third switching element and the first capacitive element to realize the control of the surge signal and ensure the surge on the busbar. The signal is absorbed, and a second absorption path composed of the first resistive element and the second switching element is also provided to absorb the surge signal. Specifically, the control chip controls the first resistive element according to the relationship between the bus signal and the voltage threshold Whether to absorb the surge signal, the arrangement of the first absorption path and the second absorption path improves the absorption capacity of the surge signal in the circuit, and improves the reliability of the circuit. Among them, the unidirectional conduction element may have unidirectional conduction characteristics Components, such as diodes, etc.

在上述技术方案中，进一步地，还包括：第二阻性元件，第二阻性元件用于释放第一容性元件中的浪涌信号，第二阻性元件与第一容性元件并联。In the above technical solution, it further includes: a second resistive element, the second resistive element is used to release the surge signal in the first capacitive element, and the second resistive element is connected in parallel with the first capacitive element.

在该技术方案中，在第一容性元件吸收高压母线上的浪涌信号后，利用设置的第二阻性元件来释放第一容性元件中的浪涌信号，第二阻性元件的设置提高了驱动控制电路的可靠性，减少了吸收电容的容量需求。In this technical solution, after the first capacitive element absorbs the surge signal on the high-voltage bus, the second resistive element is used to release the surge signal in the first capacitive element, and the second resistive element is set The reliability of the drive control circuit is improved, and the capacity requirement of the absorption capacitor is reduced.

在上述任一技术方案中，进一步地，还包括：第二容性元件，用于吸收高压母线上的浪涌信号，第二容性元件与第一容性元件串联。In any of the above technical solutions, it further includes: a second capacitive element for absorbing a surge signal on the high-voltage bus, and the second capacitive element is connected in series with the first capacitive element.

在该技术方案中，在高压母线的电压较大时，在第一容性元件的基础上串联第二容性元件，以提高高压母线的浪涌信号的吸收能力。In this technical solution, when the voltage of the high-voltage bus is relatively large, a second capacitive element is connected in series with the first capacitive element to improve the surge signal absorption capacity of the high-voltage bus.

在上述任一技术方案中，进一步地，还包括：第三阻性元件，第三阻性元件用于释放第二容性元件中的浪涌信号，第三阻性元件与第二容性元件并联。In any of the above technical solutions, it further includes: a third resistive element, the third resistive element is used to release the surge signal in the second capacitive element, the third resistive element and the second capacitive element in parallel.

在该技术方案中，在设置第二容性元件的情况下，通过设置第三阻性元件与第二阻性元件配合使用，来平衡第一容性元件和第二容性元件两端的电压，同时第三阻性元件还用于对第二容性元件上的浪涌信号进行释放，以提高了驱动控制电路的可靠性。In this technical solution, when the second capacitive element is provided, the third resistive element is used in conjunction with the second resistive element to balance the voltage across the first capacitive element and the second capacitive element. At the same time, the third resistive element is also used to release the surge signal on the second capacitive element, so as to improve the reliability of the drive control circuit.

在上述任一技术方案中，进一步地，还包括：第四阻性元件，用于限制流向第一容性元件和/或第二容性元件的电流，第四阻性元件、第二开关元件以及第一容性元件相串联；或第四阻性元件、第二开关元件、第一容性元件以及第二容性元件相串联。In any of the above technical solutions, it further includes: a fourth resistive element for limiting the current flowing to the first capacitive element and/or the second capacitive element, the fourth resistive element and the second switching element And the first capacitive element is connected in series; or the fourth resistive element, the second switching element, the first capacitive element and the second capacitive element are connected in series.

在该技术方案中，通过设置与第一容性元件和/或第二容性元件串联的第四阻性元件，利用第四阻性元件的对流向第一容性元件和/或第二容性元件的电流进行限制，防止第一容性元件和/或第二容性元件及并联的阻性元件由于过流而损坏，提高了驱动控制电路的可靠性。In this technical solution, by arranging a fourth resistive element in series with the first capacitive element and/or the second capacitive element, the convection of the fourth resistive element is used to flow to the first capacitive element and/or the second capacitive element. The current of the capacitive element is limited to prevent the first capacitive element and/or the second capacitive element and the parallel resistive element from being damaged due to overcurrent, thereby improving the reliability of the drive control circuit.

在上述任一技术方案中，进一步地，还包括：第一放电元件，用于释放第一阻性元件中的尖峰电压信号，第一放电元件与第一阻性元件并联。In any of the above technical solutions, it further includes: a first discharge element for releasing the spike voltage signal in the first resistive element, and the first discharge element is connected in parallel with the first resistive element.

在该技术方案中，通过设置第一放电元件，在第一阻性元件吸收高压母线上的浪涌信号后，利用设置与第一阻性元件并联的第一放电元件来释放第一阻性元上的尖峰电压信号，第一放电元件的设置提高了驱动控制电路的可靠性。In this technical solution, by setting the first discharging element, after the first resistive element absorbs the surge signal on the high voltage bus, the first discharging element connected in parallel with the first resistive element is used to release the first resistive element On the spike voltage signal, the arrangement of the first discharging element improves the reliability of the drive control circuit.

在上述任一技术方案中，进一步地，第三开关元件与控制芯片相连接，控制芯片用于收集母线信号，并根据母线信号控制第三开关元件导通或截止。In any of the above technical solutions, further, the third switch element is connected to the control chip, and the control chip is used to collect the bus signal and control the third switch element to be turned on or off according to the bus signal.

在该技术方案中，设置的第三开关元件实现第一吸收路径的可控性，控制芯片根据母线信号与电压阈值的大小关系控制第三开关元件，进而实现第一容性元件吸收浪涌信号的控制。通过设置第三开关元件，提高了驱动控制电路的可控性，在提高浪涌吸收能力的前提下，提高了驱动控制电路的可靠性。In this technical solution, the third switching element is provided to realize the controllability of the first absorption path, and the control chip controls the third switching element according to the relationship between the bus signal and the voltage threshold, so as to realize that the first capacitive element absorbs the surge signal control. By providing the third switching element, the controllability of the drive control circuit is improved, and the reliability of the drive control circuit is improved on the premise of improving the surge absorption capability.

在上述任一技术方案中，进一步地，电压阈值包括第一电压阈值和第二电压阈值；控制芯片具体用于：母线信号大于或等于第一电压阈值小于第二电压阈值，控制第二开关元件截止，第三开关元件导通；母线信号大于或等于第二电压阈值，控制第二开关元件和第三开关元件导通；母线信号小于第一电压阈值，控制第二开关元件和第三开关元件截止。In any of the above technical solutions, further, the voltage threshold includes a first voltage threshold and a second voltage threshold; the control chip is specifically configured to: the bus signal is greater than or equal to the first voltage threshold and less than the second voltage threshold to control the second switching element Turn off, the third switching element is turned on; the bus signal is greater than or equal to the second voltage threshold, the second switching element and the third switching element are controlled to be turned on; the bus signal is less than the first voltage threshold, the second switching element and the third switching element are controlled Deadline.

在该技术方案中，通过将母线信号(如高压母线的电压信号)与第一电压阈值和第二电压阈值进行比较，并根据比较结果分别控制第一容性元件和第一阻性元件来吸收浪涌信号，具体地，在高压母线的电压信号大于或等于第一电压阈值小于第二电压阈值的情况下，控制第二开关元件截止，第三开关元件导通，利用第一容性元件来进行浪涌信号的吸收，在高压母线的电压信号大于或等于第二电压阈值的情况下，控制第二开关元件和第三开关元件导通，进而实现快速吸收浪涌，避免因为高压母线上的电压过高致使驱动控制电路的元器件损坏；在高压母线的电压信号小于第一电压阈值的情况下，控制第二开关元件和第三开关元件截止，进而通过母线电容来进行浪涌信号的吸收，同时提高了第一吸收路径和第二吸收路径中元器件的寿命。In this technical solution, the bus signal (such as the voltage signal of the high voltage bus) is compared with the first voltage threshold and the second voltage threshold, and the first capacitive element and the first resistive element are respectively controlled according to the comparison result to absorb The surge signal, specifically, when the voltage signal of the high-voltage bus is greater than or equal to the first voltage threshold and less than the second voltage threshold, the second switching element is controlled to be turned off and the third switching element is turned on, and the first capacitive element is used to Absorb the surge signal. When the voltage signal of the high-voltage bus is greater than or equal to the second voltage threshold, the second switching element and the third switching element are controlled to conduct, so as to quickly absorb the surge and avoid the Excessive voltage causes damage to the components of the drive control circuit; when the voltage signal of the high-voltage bus is less than the first voltage threshold, the second switching element and the third switching element are controlled to be turned off, and then the surge signal is absorbed through the bus capacitance At the same time, the service life of the components in the first absorption path and the second absorption path is improved.

在上述任一技术方案中，进一步地，驱动控制电路还包括：整流桥，整流桥对交流信号进行整流后输出为母线信号，母线信号经高压母线和低压母线输出至母线电容、逆变桥和负载，其中，控制芯片根据交流信号控制第二开关元件的导通状态和第三开关元件的导通状态。In any of the above technical solutions, further, the drive control circuit further includes: a rectifier bridge, the rectifier bridge rectifies the AC signal and outputs it as a bus signal, and the bus signal is output to the bus capacitor, the inverter bridge and the inverter via the high voltage bus and the low voltage bus. Load, wherein the control chip controls the conduction state of the second switching element and the conduction state of the third switching element according to the AC signal.

在上述任一技术方案中，进一步地，母线电容为薄膜电容。In any of the above technical solutions, further, the bus capacitor is a film capacitor.

本申请的第四方面提供了一种控制器，包括如上述任一项驱动控制电路，因此该控制器具有上述任一实施例所述的驱动控制电路的全部有益效果，在此不再赘述。The fourth aspect of the present application provides a controller including any one of the above-mentioned drive control circuits. Therefore, the controller has all the beneficial effects of the drive control circuit described in any one of the above-mentioned embodiments, which will not be repeated here.

本申请的第五方面提供了一种空调器，包括：电机；以及如上述任一技术方案所述的驱动控制电路，所述电机的信号输入端连接至所述驱动控制电路，所述驱动控制电路输出的驱动信号用于驱动所述电机运行。因此该空调器具有上述任一实施例所述的驱动控制电路的全部有益效果，在此不再赘述。A fifth aspect of the present application provides an air conditioner, including: a motor; and the drive control circuit according to any one of the above technical solutions, the signal input end of the motor is connected to the drive control circuit, and the drive control The drive signal output by the circuit is used to drive the motor to run. Therefore, the air conditioner has all the beneficial effects of the drive control circuit described in any of the above embodiments, and will not be repeated here.

本申请的第六方面提供了一种驱动控制电路，包括：逆变桥，用于驱动控制负载运行，逆变桥接入于高压母线和低压母线之间；电抗器，用于吸收驱动控制电路驱动负载运行过程中产生的浪涌信号，电抗器接入于电网和负载之间；母线电容，用于提供负载上电所需的启动电压，母线电容还用于吸收浪涌信号，母线电容接入于逆变桥输入侧的母线线路中；驱动控制电路还包括：阻性吸收电路，用于吸收母线线路上的浪涌信号，阻性吸收电路与母线电容并联；第四开关元件，用于控制阻性吸收电路对浪涌信号的吸收过程，第四开关元件与阻性吸收电路串联，第四开关元件导通时，阻性吸收电路吸收浪涌信号，第四开关元件截止时，阻性吸收电路停止吸收浪涌信号。The sixth aspect of the present application provides a drive control circuit, including: an inverter bridge, used to drive and control load operation, the inverter bridge is connected between the high-voltage bus and the low-voltage bus; a reactor, used to absorb the drive control circuit For the surge signal generated in the process of driving the load, the reactor is connected between the grid and the load; the bus capacitor is used to provide the starting voltage required for the load to be powered on, and the bus capacitor is also used to absorb the surge signal. The bus capacitor is connected Into the bus line on the input side of the inverter bridge; the drive control circuit also includes: a resistive absorbing circuit for absorbing the surge signal on the bus line, the resistive absorbing circuit is connected in parallel with the bus capacitor; the fourth switching element is used for Control the resistive absorption circuit to absorb the surge signal. The fourth switching element is connected in series with the resistive absorption circuit. When the fourth switching element is turned on, the resistive absorption circuit absorbs the surge signal. When the fourth switching element is turned off, the resistive The absorption circuit stops absorbing the surge signal.

本申请提供的驱动控制电路，通过将阻性吸收电路与母线电容并联，来辅助母线电容吸收母线上的浪涌信号，同时通过将第四开关元件与阻性吸收电路串联，来控制阻性吸收电路对浪涌信号的吸收过程。具体来说，样机正常运行时，母线电压最大值会远小于母线电压保护阈值(可根据实际情况进行设定)，无需阻性吸收电路介入，因此第四开关元件不会起作用；浪涌能量主要来源于电源输入、样机故障停机时电机绕组、交直流侧电感续流以及电机动能，当浪涌信号来临时，由于小容量的母线电容(如薄膜电容或者小容量电解电容)吸收浪涌能力有限，母线电压会快速上升，一旦母线电压超过保护阈值，可能会损坏元器件，为保护元器件不受高压损坏(主要为智能功率模块及电容等元器件)，第四开关元件开通，阻性吸收电路开始吸收浪涌，母线电压会快速下降，当母线电压处于合理范围时(可根据实际情况进行设定)，第四开关元件关闭，阻性吸收电路结束本阶段的浪涌吸收过程。通过本申请提供的驱动控制电路，可以有效缓解母线电容对浪涌信号吸收差的情况，进而提升母线电压的稳定性和可靠性。The drive control circuit provided by this application assists the bus capacitor to absorb the surge signal on the bus by connecting the resistive absorption circuit and the bus capacitor in parallel, and at the same time, controls the resistive absorption by connecting the fourth switching element in series with the resistive absorption circuit The circuit's absorption process of surge signals. Specifically, when the prototype is running normally, the maximum bus voltage will be much smaller than the bus voltage protection threshold (which can be set according to the actual situation), without the intervention of resistive absorption circuit, so the fourth switching element will not work; surge energy Mainly comes from the power input, the motor winding when the prototype fails, the AC and DC side inductance freewheeling and the motor kinetic energy. When the surge signal comes, due to the ability of small-capacity bus capacitors (such as film capacitors or small-capacity electrolytic capacitors) to absorb the surge Limited, the bus voltage will rise rapidly. Once the bus voltage exceeds the protection threshold, the components may be damaged. To protect the components from high voltage damage (mainly components such as smart power modules and capacitors), the fourth switching element is turned on, resistive The absorption circuit starts to absorb the surge, and the bus voltage will drop rapidly. When the bus voltage is within a reasonable range (set according to the actual situation), the fourth switching element is turned off, and the resistive absorption circuit ends the surge absorption process at this stage. The drive control circuit provided by the present application can effectively alleviate the poor absorption of the surge signal by the bus capacitor, thereby improving the stability and reliability of the bus voltage.

在上述技术方案中，可选地，阻性吸收电路包括：第五阻性元件，用于对浪涌信号进行吸收，第五阻性元件接入于高压母线和低压母线之间。In the above technical solution, optionally, the resistive absorption circuit includes: a fifth resistive element for absorbing the surge signal, and the fifth resistive element is connected between the high-voltage bus and the low-voltage bus.

在该技术方案中，阻性吸收电路包括第五阻性元件，通过将第五阻性元件接入于高压母线和低压母线之间，来吸收母线上的浪涌信号。其中，第五阻性元件的阻值、功率和母线电压保护阈值、第四开关元件的过电流能力、吸收的能量相关，可选地，第五阻性元件为一个或多个串联连接的电阻，电阻可以有感电阻或无感电阻，在此不做具体限定，通过对电阻型号的选择，可以实现对浪涌信号的快速吸收，保证母线电压快速下降。In this technical solution, the resistive absorption circuit includes a fifth resistive element, and the fifth resistive element is inserted between the high-voltage bus and the low-voltage bus to absorb the surge signal on the bus. Among them, the resistance of the fifth resistive element, power and bus voltage protection threshold, the overcurrent capability of the fourth switching element, and the energy absorbed are related. Optionally, the fifth resistive element is one or more resistors connected in series. , The resistance can be inductive or non-inductive, and there is no specific limitation here. By selecting the resistance model, the surge signal can be quickly absorbed and the bus voltage can be quickly reduced.

在上述任一技术方案中，可选地，第四开关元件为功率开关或者继电器；功率开关或者继电器，用于控制阻性吸收电路对浪涌信号的吸收过程。In any of the above technical solutions, optionally, the fourth switching element is a power switch or a relay; the power switch or relay is used to control the absorbing process of the surge signal by the resistive absorbing circuit.

在该技术方案中，第四开关元件为功率开关或继电器，但不限于此。通过功率开关或继电器来控制阻性吸收电路对浪涌信号的吸收过程。In this technical solution, the fourth switching element is a power switch or a relay, but it is not limited thereto. The absorption process of the surge signal by the resistive absorption circuit is controlled by a power switch or a relay.

在上述任一技术方案中，可选地，阻性吸收电路还包括：第二放电元件，用于对第五阻性元件的尖峰电压进行放电，第二放电元件与第五阻性元件并联。In any of the above technical solutions, optionally, the resistive absorption circuit further includes: a second discharge element for discharging the peak voltage of the fifth resistive element, and the second discharge element is connected in parallel with the fifth resistive element.

在该技术方案中，阻性吸收电路还包括第二放电元件，使用第二放电元件与第五阻性元件并联，作为第五阻性元件的尖峰电压的释放回路，防止第四开关元件断开时第五阻性元件产生尖峰电压，从而对驱动控制电路造成影响或导致元器件损坏。In this technical solution, the resistive absorbing circuit also includes a second discharge element, which uses the second discharge element in parallel with the fifth resistive element to serve as the peak voltage release circuit of the fifth resistive element to prevent the fourth switching element from disconnecting At this time, the fifth resistive element generates a spike voltage, thereby affecting the drive control circuit or causing damage to the components.

在上述任一技术方案中，可选地，第二放电元件为单向导通元件，或第二放电元件包括串联的单向导通元件和电阻；单向导通元件的导通方向与流经第五阻性元件的电流方向相反。In any of the above technical solutions, optionally, the second discharging element is a unidirectional conducting element, or the second discharging element includes a uniconducting element and a resistor connected in series; The direction of current in the resistive element is opposite.

在该技术方案中，通过一个单独的单向导通元件，或单向导通元件与电阻的串联组合，为第五阻性元件的尖峰电压提供一个放电回路。单向导通元件是具有单向导通特性的元件，如二极管等。可选地，单向导通元件为二极管，二极管的选择与第五阻性元件的电感量及阻值相关。In this technical solution, a single unidirectional conduction element or a series combination of a unidirectional conduction element and a resistor is used to provide a discharge loop for the peak voltage of the fifth resistive element. Uni-conducting components are components with uni-conducting characteristics, such as diodes. Optionally, the unidirectional conducting element is a diode, and the selection of the diode is related to the inductance and resistance of the fifth resistive element.

在上述任一技术方案中，可选地，第二放电元件包括：第三容性元件，用于对第五阻性元件的尖峰电压进行放电，第三容性元件与第五阻性元件并联。In any of the above technical solutions, optionally, the second discharge element includes: a third capacitive element for discharging the peak voltage of the fifth resistive element, and the third capacitive element is connected in parallel with the fifth resistive element .

在该技术方案中，第二放电元件包括第三容性元件，使用第三容性元件与第五阻性元件并联，作为第五阻性元件的尖峰电压的放电回路。第三容性元件的选择与第五阻性元件的电感量相关，具体地，第三容性元件的电容量与第五阻性元件的电感量正相关，即第五阻性元件的电感量越小，第三容性元件的电容量也越小。In this technical solution, the second discharge element includes a third capacitive element, and the third capacitive element is used in parallel with the fifth resistive element as a discharge circuit for the peak voltage of the fifth resistive element. The selection of the third capacitive element is related to the inductance of the fifth resistive element. Specifically, the capacitance of the third capacitive element is positively related to the inductance of the fifth resistive element, that is, the inductance of the fifth resistive element The smaller the capacitance, the smaller the capacitance of the third capacitive element.

在上述任一技术方案中，可选地，第二放电元件还包括：第六阻性元件，用于限制流经第三容性元件的电流，第六阻性元件与第三容性元件串联。In any of the above technical solutions, optionally, the second discharge element further includes: a sixth resistive element for limiting the current flowing through the third capacitive element, and the sixth resistive element is connected in series with the third capacitive element .

在该技术方案中，第二放电元件还包括第六阻性元件，第六阻性元件与第三容性元件串联，以限制流经第三容性元件的电流，防止第三容性元件因过流而损坏，从而提升电路可靠性。In this technical solution, the second discharge element also includes a sixth resistive element, and the sixth resistive element is connected in series with the third capacitive element to limit the current flowing through the third capacitive element and prevent the third capacitive element from being caused by Damaged by overcurrent, thereby improving circuit reliability.

可选地，第三容性元件为电容，第六阻性元件为电阻，即使用串联的RC谐振电路对第五阻性元件的尖峰电压进行释放。Optionally, the third capacitive element is a capacitor, and the sixth resistive element is a resistor, that is, a series-connected RC resonance circuit is used to release the spike voltage of the fifth resistive element.

需要说明的是，第二放电元件的选择与第五阻性元件的电感量及阻值相关，如果第五阻性元件的电感量小到可以忽略不计或者没有，例如第五阻性元件由一个或多个串联的无感电阻组成，那么可以不使用第二放电元件，单独使用第五阻性元件作为吸收元件。It should be noted that the selection of the second discharging element is related to the inductance and resistance of the fifth resistive element. If the inductance of the fifth resistive element is small enough to be negligible or not, for example, the fifth resistive element consists of one Or multiple non-inductive resistors connected in series, then the second discharge element may not be used, and the fifth resistive element alone can be used as the absorbing element.

在上述任一技术方案中，可选地，第五阻性元件包括：一个或者多个电阻，多个电阻之间串联连接。In any of the above technical solutions, optionally, the fifth resistive element includes: one or more resistors, and the multiple resistors are connected in series.

在上述任一技术方案中，可选地，驱动控制电路还包括：控制电路，与第四开关元件相连接，控制电路用于收集驱动控制电路的供电信号，并根据供电信号控制第四开关元件导通或截止；其中，供电信号为母线信号和交流信号。In any of the above technical solutions, optionally, the drive control circuit further includes: a control circuit connected to the fourth switch element, the control circuit is used to collect the power supply signal of the drive control circuit, and control the fourth switch element according to the power supply signal On or off; where the power supply signal is a bus signal and an AC signal.

在该实施例中，通过控制电路收集驱动控制电路的供电信号，根据供电信号控制第四开关元件导通或者截止，进而控制阻性元件对浪涌信号的吸收过程。其中，供电信号为母线信号和/或交流信号。In this embodiment, the power supply signal of the driving control circuit is collected by the control circuit, and the fourth switch element is controlled to be turned on or off according to the power supply signal, thereby controlling the resistive element's absorption process of the surge signal. Among them, the power supply signal is a bus signal and/or an AC signal.

具体地，交流信号通过整流电路处理为母线信号，母线信号和交流信号均可以作为控制第四开关元件导通或者截止的判定条件。Specifically, the AC signal is processed into a bus signal by the rectifier circuit, and both the bus signal and the AC signal can be used as a determination condition for controlling the turning on or off of the fourth switching element.

在上述任一技术方案中，可选地，母线电容为薄膜电容。In any of the above technical solutions, optionally, the bus capacitor is a film capacitor.

本申请的第七方面提出了一种控制器，包括：如上述技术方案中任一项的所述的驱动控制电路，因此该空调器控制器具有该驱动控制电路的全部技术效果，不再赘述。The seventh aspect of the present application proposes a controller, including: the drive control circuit as described in any one of the above technical solutions, so the air conditioner controller has all the technical effects of the drive control circuit, and will not be repeated here. .

本申请的第八方面提出了一种空调器，包括：电机；以及如上述技术方案中任一项的驱动控制电路；其中，电机的信号输入端连接至驱动控制电路，驱动控制电路输出的驱动信号用于驱动电机运行，因此该空调器具有该驱动控制电路或该控制器全部的技术效果，不再赘述。An eighth aspect of the present application provides an air conditioner, including: a motor; and a drive control circuit as in any one of the above technical solutions; wherein the signal input terminal of the motor is connected to the drive control circuit, and the drive control circuit outputs the drive The signal is used to drive the motor to run, so the air conditioner has all the technical effects of the drive control circuit or the controller, and will not be repeated.

附图说明BRIEF DESCRIPTION

本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

图1示出了一般情况下中交流-直流-交流的拓扑结构示意图；Figure 1 shows a schematic diagram of the AC-DC-AC topology in general conditions;

图2示出了一般情况下的一个驱动控制电路示意图；Figure 2 shows a schematic diagram of a drive control circuit in general;

图3示出了一般情况下的另一个驱动控制电路示意图；Figure 3 shows a schematic diagram of another drive control circuit in general;

图4示出了本申请的一个实施例的驱动控制电路示意图；FIG. 4 shows a schematic diagram of a drive control circuit of an embodiment of the present application;

图5示出了本申请的另一个实施例的驱动控制电路示意图；FIG. 5 shows a schematic diagram of a drive control circuit of another embodiment of the present application;

图6示出了本申请的再一个实施例的驱动控制电路示意图；Fig. 6 shows a schematic diagram of a drive control circuit of another embodiment of the present application;

图6.1示出了本申请的又一个实施例的驱动控制电路示意图；Figure 6.1 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图7示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 7 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图8示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 8 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图9示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 9 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图10示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 10 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图11示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 11 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图12示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 12 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图13示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 13 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图14示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 14 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图15示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 15 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图16示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 16 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图17示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 17 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图18示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 18 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图19示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 19 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图20示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 20 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图21示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 21 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图22示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 22 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图23示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 23 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图24示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 24 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图25示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 25 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图26示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 26 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图27示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 27 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图28示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 28 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图29示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 29 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图30示出了本申请的一个实施例的驱动控制电路的拓扑结构示意图；FIG. 30 shows a schematic diagram of a topological structure of a drive control circuit of an embodiment of the present application;

图31示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 31 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图32示出了本申请的又一个实施例的驱动控制电路示意图；Fig. 32 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图33示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 33 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图34示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 34 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图35示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 35 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图36示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 36 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图37示出了本申请的一个实施例的第一电压阈值和第二电压阈值的示意图；FIG. 37 shows a schematic diagram of the first voltage threshold and the second voltage threshold of an embodiment of the present application;

图38示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 38 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图39示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 39 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图40示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 40 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图41示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 41 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图42示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 42 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图43示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 43 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图44示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 44 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图45示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 45 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图46示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 46 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图47示出了本申请的又一个实施例的驱动控制电路示意图；FIG. 47 shows a schematic diagram of a drive control circuit according to another embodiment of the present application;

图48示出了本申请的又一个实施例的驱动控制电路示意图。FIG. 48 shows a schematic diagram of a drive control circuit according to another embodiment of the present application.

具体实施方式detailed description

为了能够更清楚地理解本申请的上述目的、特征和优点，下面结合附图和具体实施方式对本申请进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。In order to be able to understand the above objectives, features and advantages of the application more clearly, the application will be further described in detail below in conjunction with the drawings and specific implementations. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

在下面的描述中阐述了很多具体细节以便于充分理解本申请，但是，本申请还可以采用其他不同于在此描述的其他方式来实施，因此，本申请的保护范围并不受下面公开的具体实施例的限制。In the following description, many specific details are set forth in order to fully understand this application. However, this application can also be implemented in other ways different from those described here. Therefore, the scope of protection of this application is not subject to the specific details disclosed below. Limitations of the embodiment.

下面参照图4至图48描述根据本申请一些实施例所述驱动控制电路、空调器、驱动控制电路、控制器、空调器、驱动控制电路、控制器和空调器。The drive control circuit, air conditioner, drive control circuit, controller, air conditioner, drive control circuit, controller, and air conditioner according to some embodiments of the present application are described below with reference to FIGS. 4 to 48.

如图4所示，在本申请第一方面的实施例中，提供了一种驱动控制电路，驱动控制电路包括：逆变桥，用于输出驱动信号，逆变桥接入于高压母线和低压母线之间；控制电路还包括：电抗器Ldc ₂，用于吸收驱动控制电路驱动负载运行过程中产生的浪涌信号，电抗器Ldc ₂接入于电网和负载之间；母线电容，用于滤除母线线路上的浪涌信号，母线电容接入于逆变桥输入侧的母线线路中。 As shown in FIG. 4, in the embodiment of the first aspect of the present application, a drive control circuit is provided. The drive control circuit includes: an inverter bridge for outputting drive signals, and the inverter bridge is connected to the high-voltage bus and the low-voltage Between the busbars; the control circuit also includes: a reactor Ldc ₂ , used to absorb the surge signal generated during the operation of the drive control circuit to drive the load, the reactor Ldc _{2 is} connected between the grid and the load; the bus capacitor is used to filter In addition to the surge signal on the bus line, the bus capacitor is connected to the bus line on the input side of the inverter bridge.

在该实施例中，驱动控制电路中设置有电抗器Ldc ₂，电抗器Ldc ₂用于吸收交流输入侧和逆变桥产生的浪涌信号，以提高驱动控制电路的抗浪涌能力；其中，电抗器Ldc ₂与母线电容的谐振频率固定为

其中L为电抗器Ldc ₂的电感值，C为母线电容的容值，可有效防止由于分布电感电容参数导致谐振频率不固定的情况。同时，选择使用容值较低的母线电容代替传统的电解电容，具体选用薄膜电容作为母线上的母线电容，薄膜电容并联于逆变桥的输入侧，串联在所述高压母线和低压母线之间，用于滤除母线上的浪涌信号。应用了本申请提供的技术方案，通过使用成本较为低廉的薄膜电容替代成本高昂的电解电容，有效地降低了生产成本；薄膜电容的寿命可达6250小时，远大于一般的电解电容的2000小时，因此可有效提高驱动控制电路的寿命。同时，薄膜电容的ESR(等效串联电阻)较小，在相同的波纹电流影响下，薄膜电容的发热量远小于电解电容，因此也可以有效的避免由于母线电容发热导致控制效率降低的问题出现，提高了驱动控制电路的可靠性和工作效率。 In this embodiment, a reactor Ldc ₂ is provided in the drive control circuit, and the reactor Ldc _{2 is} used to absorb the surge signal generated by the AC input side and the inverter bridge to improve the surge resistance of the drive control circuit; among them, The resonance frequency of the reactor Ldc ₂ and the bus capacitor is fixed to

Among them, L is the inductance value of the reactor Ldc ₂ , and C is the capacitance value of the bus capacitor, which can effectively prevent the unfixed resonance frequency due to the distributed inductance and capacitance parameters. At the same time, choose to use a lower capacitance bus capacitor instead of the traditional electrolytic capacitor. Specifically, a thin film capacitor is selected as the bus capacitor on the bus. The thin film capacitor is connected in parallel to the input side of the inverter bridge and connected in series between the high voltage bus and the low voltage bus. , Used to filter out the surge signal on the bus. Applying the technical solution provided by this application, by using relatively low-cost film capacitors to replace expensive electrolytic capacitors, the production cost is effectively reduced; the life of film capacitors can reach 6,250 hours, which is much longer than the 2000 hours of ordinary electrolytic capacitors. Therefore, the life of the drive control circuit can be effectively increased. At the same time, the ESR (Equivalent Series Resistance) of the film capacitor is small. Under the influence of the same ripple current, the heat generation of the film capacitor is much smaller than that of the electrolytic capacitor, so it can also effectively avoid the problem of reduced control efficiency due to the heating of the bus capacitor. , Improve the reliability and work efficiency of the drive control circuit.

可选地，母线电容的容值小于预设容量，具体地，预设容量按照如下计算公式进行计算：Optionally, the capacitance of the bus capacitor is less than the preset capacity. Specifically, the preset capacity is calculated according to the following calculation formula:

其中，C _dc为预设容量，L _S是等效驱动控制电路直流侧的总电感值，P _L是驱动控制电路的负载功率，R _S为等效驱动控制电路直流侧的总电阻，v _dc0为母线电压平均值，譬如，以7P样机为例，根据该计算公式可以确定C _dc必须大于840uF，预设容量为840uF以上，在具体实施时用的是1230uF。 Among them, C _dc is the preset capacity, L _S is the total inductance value on the DC side of the equivalent drive control circuit, P _L is the load power of the drive control circuit, R _S is the total resistance on the DC side of the equivalent drive control circuit, v _dc0 It is the average value of the bus voltage. For example, take the 7P prototype as an example. According to the calculation formula, it can be determined that C _dc must be greater than 840uF, the preset capacity is 840uF or more, and 1230uF is used in specific implementation.

可选地，薄膜电容的规格为单个900V，30uF。Optionally, the specification of the film capacitor is a single 900V, 30uF.

可选地，电抗器Ldc ₂和整流桥之间还设置有用于限流的电阻R ₀，电阻R ₀可选为普通电阻器。 Optionally, a resistor R ₀ for current limiting is also provided between the reactor Ldc ₂ and the rectifier bridge, and the resistor R ₀ may be an ordinary resistor.

可选地，如图5所示，驱动控制电路还包括：限流电路，用于限制首次上电时母线电容的充电电流，限流电路串联在高压母线上。Optionally, as shown in FIG. 5, the drive control circuit further includes: a current-limiting circuit for limiting the charging current of the bus capacitor at the first power-on, and the current-limiting circuit is connected in series with the high-voltage bus.

可选地，如图5所示，限流电路包括：温敏电阻，用于限制首次上电时母线电容的充电电流，温敏电阻串联在高压母线上；继电器，用于控制接入第一阻性元件以进行限流或短接第一阻性元件以停止限流，继电器并联在温敏电阻的两端。Optionally, as shown in Figure 5, the current-limiting circuit includes: a temperature-sensitive resistor, used to limit the charging current of the bus capacitor at the first power-on, the temperature-sensitive resistor is connected in series with the high-voltage bus; a relay is used to control the first The resistive element is used for current limiting or the first resistive element is short-circuited to stop the current limiting, and the relay is connected in parallel at both ends of the temperature-sensitive resistor.

在该实施例中，在高压母线上出现浪涌信号时，温敏电阻会限制首次上电时母线电容的充电电流，进而确保母线电容不被击穿，同时温敏电阻的阻值随着温度线性变化，对充电电流的上升速度进行限制。在温敏电阻两端并联继电器，继而形成一个具有开关特征的温敏电阻，在驱动控制电路首次上电时，继电器处于断开状态，第一温敏电阻和母线电容来吸收来自交流供电侧的浪涌信号，在首次上电之后，高压母线上的电流不是很大的情况下，第一继电器闭合，进而降低第一温敏电阻对高压母线的限流作用。In this embodiment, when a surge signal occurs on the high-voltage bus, the temperature-sensitive resistor will limit the charging current of the bus capacitor at the first power-on, so as to ensure that the bus capacitor is not broken down. At the same time, the resistance of the temperature-sensitive resistor increases with temperature. The linear change limits the rising speed of the charging current. The relay is connected in parallel at both ends of the temperature-sensitive resistor to form a temperature-sensitive resistor with switching characteristics. When the drive control circuit is powered on for the first time, the relay is in an off state. The first temperature-sensitive resistor and the bus capacitor absorb the power from the AC power supply side. In the surge signal, after the first power-on, when the current on the high-voltage bus is not very large, the first relay is closed, thereby reducing the current limiting effect of the first temperature-sensitive resistor on the high-voltage bus.

在本申请的一个实施例中，进一步地，如图6所示，驱动控制电路还包括：第一吸收电路，用于吸收母线线路上的浪涌信号，第一吸收电路接入于母线电容与逆变桥之间。In an embodiment of the present application, further, as shown in FIG. 6, the drive control circuit further includes: a first absorption circuit for absorbing the surge signal on the bus line, the first absorption circuit is connected to the bus capacitor and Between inverter bridges.

在该实施例中，对于母线电容选用薄膜电容的情况，当电路中存在浪涌电压时，由于薄膜电容无法吸收过多的浪涌能量，通过设置第一吸收电路接入于母线电容与逆变桥之间，以辅助母线电容吸收逆变桥侧母线线路上的浪涌信号，以防止母线电容被浪涌信号击穿。In this embodiment, for the case of using film capacitors for the bus capacitors, when there is a surge voltage in the circuit, since the film capacitors cannot absorb too much surge energy, the first absorption circuit is connected to the bus capacitor and the inverter. Between the bridges, the auxiliary bus capacitor is used to absorb the surge signal on the bus line on the side of the inverter bridge to prevent the bus capacitor from being broken down by the surge signal.

在本申请的一个实施例中，进一步地，如图6所示，第一吸收电路包括：阻性吸收元件，用于吸收浪涌信号，阻性吸收元件与所述母线电容并联；第一开关元件，用于调控阻性吸收元件吸收浪涌信号的过程，第一开关元件与阻性吸收元件相串联，第一开关元件导通时，阻性吸收元件吸收浪涌信号，第一开关元件截止时，阻性吸收元件停止吸收浪涌信号。In an embodiment of the present application, further, as shown in FIG. 6, the first absorption circuit includes: a resistive absorption element for absorbing a surge signal, the resistive absorption element is connected in parallel with the bus capacitor; and a first switch The element is used to regulate the process of the resistive absorbing element absorbing the surge signal. The first switching element is connected in series with the resistive absorbing element. When the first switching element is turned on, the resistive absorbing element absorbs the surge signal and the first switching element is turned off When the resistive absorption element stops absorbing the surge signal.

在该实施例中，第一吸收电路包括阻性吸收元件，阻性吸收元件用于吸收母线电容靠近逆变桥一侧的浪涌信号。具体地，第一开关元件导通，阻性吸收元件接入驱动控制电路并吸收浪涌信号，具体地，阻性吸收元件将浪涌信号的电能转化为热能并释放，以消耗掉浪涌信号，避免因更换容值较小的薄膜电容导致的母线电容被浪涌信号击穿损坏。当母线上的浪涌信号降低或消失后，第一开关元件截止，阻性吸收元件从驱动控制电路中断离，以避免对吸收控制电路中正常的电信号产生影响。In this embodiment, the first absorption circuit includes a resistive absorption element, and the resistive absorption element is used to absorb the surge signal on the side of the bus capacitor near the inverter bridge. Specifically, the first switching element is turned on, and the resistive absorption element is connected to the drive control circuit and absorbs the surge signal. Specifically, the resistive absorption element converts the electrical energy of the surge signal into heat energy and releases it to consume the surge signal , To prevent the bus capacitor from being broken down by the surge signal caused by replacing the film capacitor with a smaller capacitance value. When the surge signal on the bus bar decreases or disappears, the first switch element is turned off, and the resistive absorption element is disconnected from the drive control circuit, so as to avoid affecting the normal electrical signal in the absorption control circuit.

在本申请的一个实施例中，进一步地，如图6所示，阻性吸收元件包括：第一电阻，用于吸收浪涌信号，第一电阻与第一开关元件串联连接，第一电阻的阻值与预设的母线电压保护阈值相对应；和/或第一电阻的阻值与预设的第一开关元件的过电流保护阈值相对应。In an embodiment of the present application, further, as shown in FIG. 6, the resistive absorption element includes: a first resistor for absorbing a surge signal; the first resistor is connected in series with the first switching element; The resistance value corresponds to the preset bus voltage protection threshold; and/or the resistance value of the first resistor corresponds to the preset overcurrent protection threshold of the first switching element.

在该实施例中，阻性吸收元件包括第一电阻，第一电阻与第一开关元件串联连接，当第一开关元件导通时，第一吸收电路导通，浪涌信号被第一电阻吸收；当第一开关元件截止时，第一吸收电路断开，第一电阻不再吸收驱动控制电路中的电信号。具体地，第一电阻的阻值于预设的母线电压保护阈值及预设的第一开关元件的过电流保护阈值相对应，以确保阻性吸收元件对浪涌的吸收效果。其中，电压保护阈值和电流保护阈值与驱动电路中各元器件出厂标定的所能承受的电压值和电流值相关。In this embodiment, the resistive absorbing element includes a first resistor, and the first resistor is connected in series with the first switching element. When the first switching element is turned on, the first absorbing circuit is turned on, and the surge signal is absorbed by the first resistor. ; When the first switching element is turned off, the first absorption circuit is disconnected, and the first resistor no longer absorbs the electrical signal in the drive control circuit. Specifically, the resistance of the first resistor corresponds to the preset bus voltage protection threshold and the preset overcurrent protection threshold of the first switching element, so as to ensure the surge absorption effect of the resistive absorption element. Among them, the voltage protection threshold and the current protection threshold are related to the voltage and current values that each component in the drive circuit can withstand when they are factory-calibrated.

进一步地，如图6所示，当第一电阻为非无感电阻时，阻性吸收元件还包括反向并联于第一电阻的二极管，以形成感应电压释放回路。Further, as shown in FIG. 6, when the first resistor is a non-inductive resistor, the resistive absorbing element further includes a diode connected in anti-parallel to the first resistor to form an induced voltage release loop.

进一步地，如图6.1所示，第一电阻为非无感电阻时，阻性吸收元件还包括电容器C ₁和电阻R ₁，C ₁和R ₁串联后，并联于第一电阻的两端，以形成感应电压释放回路。 Further, as shown in Figure 6.1, when the first resistor is a non-inductive resistor, the resistive absorbing element also includes a capacitor C ₁ and a resistor R _{1. After} C ₁ and R _{1 are} connected in series, they are connected in parallel to both ends of the first resistor. To form an induced voltage release loop.

在本申请的一个实施例中，进一步地，如图6所示，阻性吸收元件包括：第一单相导通元件，与第一电阻相并联，第一单相导通元件的导通方向与流经第一电阻的电流方向相反。In an embodiment of the present application, further, as shown in FIG. 6, the resistive absorption element includes: a first single-phase conduction element, connected in parallel with the first resistor, and the conduction direction of the first single-phase conduction element The direction of the current flowing through the first resistor is opposite.

在该实施例中，在第一电阻的两端并联第一单向导通元件，具体地，第一单向导通元件为二极管，用于形成第一电阻的自感电压释放回路，防止第一电阻上产生的自感电压对第一开关元件的可靠性产生影响。In this embodiment, a first uni-conducting element is connected in parallel at both ends of the first resistor. Specifically, the first uni-conducting element is a diode, which is used to form a self-inductance voltage release loop of the first resistor to prevent the first resistor The self-inductance voltage generated on the first switching element affects the reliability of the first switching element.

在本申请的一个实施例中，进一步地，如图7所示，驱动控制电路还包括：第二吸收电路，用于吸收高压母线和低压母线上的浪涌信号，第二吸收电路包括：容性吸收元件，用于吸收浪涌信号，容性吸收元件与母线电容并联；第二单向导通元件，用于调控容性吸收元件对浪涌信号的吸收过程，第二单向导通元件与容性吸收元件相串联。In an embodiment of the present application, further, as shown in FIG. 7, the drive control circuit further includes: a second absorption circuit for absorbing surge signals on the high-voltage bus and the low-voltage bus, and the second absorption circuit includes: The capacitive absorption element is used to absorb the surge signal, and the capacitive absorption element is connected in parallel with the bus capacitor; the second unidirectional conductive element is used to regulate the absorption process of the surge signal by the capacitive absorption element. The absorbing elements are connected in series.

在该实施例中，第二吸收电路包括与母线电容并联的容性吸收元件，通过容性吸收元件吸收母线上的浪涌信号，还包括与容性吸收元件串联的第二单向导通元件。具体地，容性吸收元件具有容性，第二容性吸收元件用于限制容性吸收元件对浪涌信号的吸收过程，使得容性吸收元件只能吸收高压母线上的浪涌信号，即通过单向导通元件的设置，将母线电容与容性吸收元件进行区分，避免了将容性吸收元件作为母线电容使用，降低了容性吸收元件的使用频次，提高了第二吸收电路的寿命。In this embodiment, the second absorbing circuit includes a capacitive absorbing element connected in parallel with the bus capacitor, the surge signal on the bus is absorbed by the capacitive absorbing element, and a second unidirectional conducting element connected in series with the capacitive absorbing element. Specifically, the capacitive absorbing element is capacitive, and the second capacitive absorbing element is used to limit the absorbing process of the capacitive absorbing element on the surge signal, so that the capacitive absorbing element can only absorb the surge signal on the high-voltage bus, that is, through The setting of the unidirectional conductive element distinguishes the bus capacitor from the capacitive absorption element, avoids using the capacitive absorption element as a bus capacitor, reduces the frequency of use of the capacitive absorption element, and increases the life of the second absorption circuit.

在本申请的一个实施例中，进一步地，如图7所示，容性吸收元件包括至少一个电容，或多个串联和/或并联的电容，第二吸收电路还包括：第二电阻，用于吸收第一容性元件中的浪涌信号，第二电阻与电容并联。In an embodiment of the present application, further, as shown in FIG. 7, the capacitive absorption element includes at least one capacitor, or multiple capacitors connected in series and/or in parallel, and the second absorption circuit further includes: a second resistor, To absorb the surge signal in the first capacitive element, the second resistor is connected in parallel with the capacitor.

在该实施例中，容性吸收元件包括用于吸收浪涌信号的一个或多个电容，多个电容相互串联和/或相互并联，并设置有与电容并联的第二电阻，利用设置与电容并联的第二电阻来吸收电容中的浪涌信号，第二电阻的设置提高了驱动控制电路的可靠性。In this embodiment, the capacitive absorption element includes one or more capacitors for absorbing surge signals, and the plurality of capacitors are connected in series and/or in parallel with each other, and a second resistor connected in parallel with the capacitor is provided. The second resistor is connected in parallel to absorb the surge signal in the capacitor, and the setting of the second resistor improves the reliability of the drive control circuit.

在本申请的一个实施例中，进一步地，如图7所示，第二吸收电路还包括：限流电阻，用于限制流经容性吸收元件的电流，限流电阻与容性吸收元件串联。In an embodiment of the present application, further, as shown in FIG. 7, the second absorbing circuit further includes: a current limiting resistor for limiting the current flowing through the capacitive absorbing element, and the current limiting resistor is connected in series with the capacitive absorbing element .

在该实施例中，第二吸收电路设置有限流电阻，限流电阻与容性吸收元件串联，用于限制在上电时流经容性吸收元件的电流，将容性吸收元件的充电电流限制在规定的范围内，防止容性吸收元件被过流击穿。In this embodiment, the second absorbing circuit is provided with a current limiting resistor, and the current limiting resistor is connected in series with the capacitive absorbing element to limit the current flowing through the capacitive absorbing element at power-on, and to limit the charging current of the capacitive absorbing element Within the specified range, prevent the capacitive absorption element from being broken down by overcurrent.

在本申请的一个实施例中，进一步地，驱动控制电路还包括：第四电阻，用于吸收电抗器Ldc ₂上产生的振荡信号，第四电阻与电抗器Ldc ₂并联。 In an embodiment of the present application, further, the drive control circuit further includes: a fourth resistor for absorbing the oscillating signal generated on the reactor Ldc ₂ , and the fourth resistor is connected in parallel with the reactor Ldc ₂ .

在该实施例中，在电抗器Ldc ₂的两端并联第四电阻，以吸收电抗器Ldc ₂上产生的振荡信号，具体地，第四电阻增加了***阻尼，其阻值小于200欧，当母线电容为薄膜电容时，设置第四电阻可提高***稳定性。 In this embodiment, a fourth resistor is connected in parallel at both ends of the reactor Ldc ₂ to absorb the oscillating signal generated on the reactor Ldc _2. Specifically, the fourth resistor increases the system damping, and its resistance is less than 200 ohms. When the bus capacitor is a film capacitor, setting a fourth resistor can improve system stability.

在本申请的一个实施例中，进一步地，如图8所示，限流电路可设置为三个或两个，具体为PTC ₁、PTC ₂和PTC ₃，或设置PTC ₁、PTC ₂和PTC ₃中的任意两个，如PTC ₁和PTC ₂，分别位于交流输入源侧三相或任意两相输入线上，具***于滤波电路和整流桥之间，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。 In an embodiment of the present application, further, as shown in FIG. 8, the current limiting circuit can be set to three or two, specifically PTC ₁ , PTC ₂ and PTC ₃ , or set PTC ₁ , PTC ₂ and PTC Any two of ₃ , such as PTC ₁ and PTC ₂ , are respectively located on the three-phase or any two-phase input line at the AC input source side, specifically between the filter circuit and the rectifier bridge. When the power is first turned on, the relay is disconnected to The temperature-sensitive resistor is connected to the loop to limit the charging current of the bus capacitor.

在本申请的一个实施例中，进一步地，如图9所示，限流电路设置为三个，具体为PTC ₁、PTC ₂和PTC ₃，分别位于交流输入源侧三相母线上，具***于滤波电路和整流桥之间，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路中设置有第一吸收电路。 In an embodiment of the present application, further, as shown in FIG. 9, three current limiting circuits, specifically PTC ₁ , PTC ₂ and PTC ₃ , are respectively located on the three-phase bus on the AC input source side, specifically located Between the filter circuit and the rectifier bridge, at the first power-on, the relay is disconnected so that the temperature-sensitive resistor is connected to the loop, thereby limiting the charging current of the bus capacitor. At the same time, a first absorption circuit is provided in the drive control circuit.

在本申请的一个实施例中，进一步地，如图10和图11所示，限流电路设置为三个，具体为PTC ₁、PTC ₂和PTC ₃，分别位于交流输入源侧三相母线上，具***于滤波电路和整流桥之间，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路中同时设置有第一吸收电路和第二吸收电路，如图10所示，第一吸收电路位于母线电容C和逆变桥之间，第二吸收电路位于整流桥和电抗器Ldc ₂之间；或如图11所示，第一吸收电路位于母线电容C和逆变桥之间，第二吸收电路位于电抗器Ldc ₂和母线电容C之间。 In an embodiment of the present application, further, as shown in FIG. 10 and FIG. 11, three current limiting circuits, specifically PTC ₁ , PTC ₂ and PTC ₃ , are respectively located on the three-phase bus on the AC input source side , Which is specifically located between the filter circuit and the rectifier bridge. When the power is turned on for the first time, the relay is disconnected so that the temperature-sensitive resistor is connected to the loop, thereby limiting the charging current of the bus capacitor. At the same time, the drive control circuit is provided with a first absorption circuit and a second absorption circuit. As shown in Figure 10, the first absorption circuit is located between the bus capacitor C and the inverter bridge, and the second absorption circuit is located between the rectifier bridge and the reactor Ldc ₂ ; or as shown in Figure 11, the first absorbing circuit is located between the bus capacitor C and the inverter bridge, and the second absorbing circuit is located between the reactor Ldc ₂ and the bus capacitor C.

以图11所示方案为例，***正常运行时，第二吸收电路的容性吸收元件上的电压维持在直流母线电压最大值点，此时阻性吸收元件对应的第一开关元件断开；由于浪涌能量主要来源于电源输入、***故障停机时压缩机绕组、交直流侧电感续流以及压缩机动能；当存在浪涌电压时，由于小容量的薄膜电容无法吸收过多的能量，母线电压高于浪涌吸收电容端电压时，容性吸收元件起作用，剩余的能量流入薄膜电容和浪涌吸收电容模块；随着浪涌能量被吸收，直流母线电压缓慢升高(浪涌吸收电容越大直流母线电压抬升越慢)；当直流母线电压高于某个设定值时(如设置为720V，实际可以调整)，阻性吸收元件介入，第一开关元件开始以脉冲宽度调制(PWM)形式或固定形式开启，以保证母线电压在浪涌电压出现时尽可能平稳。Taking the scheme shown in FIG. 11 as an example, when the system is operating normally, the voltage on the capacitive absorbing element of the second absorbing circuit is maintained at the maximum point of the DC bus voltage, and the first switching element corresponding to the resistive absorbing element is disconnected at this time; Since the surge energy mainly comes from the power input, the compressor winding when the system fails, the AC and DC side inductance freewheeling and the compressor kinetic energy; when there is a surge voltage, because the small-capacity film capacitor cannot absorb too much energy, the bus When the voltage is higher than the surge absorption capacitor terminal voltage, the capacitive absorption element works, and the remaining energy flows into the film capacitor and the surge absorption capacitor module; as the surge energy is absorbed, the DC bus voltage slowly rises (surge absorption capacitor The larger the DC bus voltage rises, the slower it is); when the DC bus voltage is higher than a certain set value (such as 720V, it can actually be adjusted), the resistive absorption element intervenes and the first switching element starts to use pulse width modulation (PWM ) Or fixed form to ensure the bus voltage is as stable as possible when the surge voltage occurs.

在本申请的一个实施例中，进一步地，如图12所示，限流电路设置于高压母线上，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路包括第二吸收电路，通过第二吸收电路中的容性吸收元件吸收浪涌信号。In an embodiment of the present application, further, as shown in FIG. 12, the current-limiting circuit is arranged on the high-voltage bus. When the power is first turned on, the relay is disconnected to allow the temperature-sensitive resistor to connect to the loop, thereby limiting the capacitance of the bus. recharging current. At the same time, the driving control circuit includes a second absorption circuit, and the surge signal is absorbed by the capacitive absorption element in the second absorption circuit.

在本申请的一个实施例中，进一步地，如图13和图14所示，限流电路设置于高压母线上，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路中同时设置有第一吸收电路和第二吸收电路，如图13所示，第一吸收电路位于母线电容C和逆变桥之间，第二吸收电路位于限流电路和电抗器Ldc ₂之间；或如图14所示，第一吸收电路位于母线电容C和逆变桥之间，第二吸收电路位于电抗器Ldc ₂和母线电容C之间。 In an embodiment of the present application, further, as shown in FIG. 13 and FIG. 14, the current limiting circuit is arranged on the high-voltage bus. When the power is turned on for the first time, the relay is disconnected to allow the temperature-sensitive resistor to connect to the loop, thereby limiting Charging current of the bus capacitor. At the same time, the drive control circuit is provided with a first absorption circuit and a second absorption circuit. As shown in Figure 13, the first absorption circuit is located between the bus capacitor C and the inverter bridge, and the second absorption circuit is located between the current limiting circuit and the reactor. Between Ldc ₂ ; or as shown in Figure 14, the first absorption circuit is located between the bus capacitor C and the inverter bridge, and the second absorption circuit is located between the reactor Ldc ₂ and the bus capacitor C.

在本申请的一个实施例中，进一步地，如图15所示，限流电路设置为三个，具体为PTC ₁、PTC ₂和PTC ₃，分别位于交流输入源侧三相母线上，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路中设置有第二吸收电路，其中第二吸收电路中设置有导通元件，导通元件具体为第一开关元件，在***中浪涌信号较弱时，第一开关元件断开，通过母线电容吸收浪涌信号；当***中浪涌信号较强时，第一开关元件闭合，第二吸收电路接入高压母线和低压母线之间，辅助吸收浪涌信号。 In an embodiment of the present application, further, as shown in FIG. 15, three current limiting circuits, specifically PTC ₁ , PTC _2, and PTC ₃ , are respectively located on the three-phase bus on the AC input source side. When the power is turned on, the relay is disconnected to allow the temperature-sensitive resistor to connect to the loop, thereby limiting the charging current of the bus capacitor. At the same time, a second absorption circuit is provided in the drive control circuit, wherein a conduction element is provided in the second absorption circuit, and the conduction element is specifically the first switching element. When the surge signal in the system is weak, the first switching element is turned off , The surge signal is absorbed through the bus capacitor; when the surge signal in the system is strong, the first switching element is closed, and the second absorption circuit is connected between the high-voltage bus and the low-voltage bus to assist in absorbing the surge signal.

在本申请的一个实施例中，进一步地，如图16所示，限流电路设置于高压母线上，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路中设置有第二吸收电路，其中第二吸收电路中设置有导通元件，导通元件具体为第一开关元件，在***中浪涌信号较弱时，第一开关元件断开，通过母线电容吸收电泳信号；当***中浪涌信号较强时，第一开关元件闭合，第二吸收电路接入高压母线和低压母线之间，辅助吸收浪涌信号。In an embodiment of the present application, further, as shown in FIG. 16, the current limiting circuit is arranged on the high-voltage bus. When the power is turned on for the first time, the relay is disconnected to allow the temperature-sensitive resistor to connect to the loop, thereby limiting the capacitance of the bus. recharging current. At the same time, a second absorption circuit is provided in the drive control circuit, wherein a conduction element is provided in the second absorption circuit, and the conduction element is specifically the first switching element. When the surge signal in the system is weak, the first switching element is turned off , The electrophoresis signal is absorbed through the bus capacitor; when the surge signal in the system is strong, the first switching element is closed, and the second absorption circuit is connected between the high voltage bus and the low voltage bus to assist in absorbing the surge signal.

在本申请的一个实施例中，进一步地，如图17所示，限流电路设置于高压母线上，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路中设置有第一吸收电路和第二吸收电路，第一吸收电路和第二吸收电路分别位于母线电容的两侧，其中第二吸收电路中设置有导通元件，具体为第一开关元件，同时第一吸收电路中也设置有第一开关元件，在***中浪涌信号较弱时，第一吸收电路和第二吸收电路第一开关元件断开，通过母线电容和吸收电泳信号；当***中浪涌信号较强时，控制对应的第一开关元件闭合，以使第一吸收电路和/或第二吸收电路接入高压母线和低压母线之间，辅助吸收浪涌信号。In an embodiment of the present application, further, as shown in FIG. 17, the current-limiting circuit is arranged on the high-voltage bus. When the power is first turned on, the relay is disconnected so that the temperature-sensitive resistor is connected to the loop, thereby limiting the capacitance of the bus recharging current. At the same time, a first absorption circuit and a second absorption circuit are provided in the drive control circuit. The first absorption circuit and the second absorption circuit are respectively located on both sides of the bus capacitor. The second absorption circuit is provided with a conduction element, specifically the first absorption circuit. The first switching element is also provided in the first absorption circuit. When the surge signal is weak in the system, the first switching element of the first absorption circuit and the second absorption circuit are disconnected, and the electrophoretic signal is absorbed through the bus capacitance ; When the surge signal in the system is strong, the corresponding first switching element is controlled to close, so that the first absorption circuit and/or the second absorption circuit are connected between the high-voltage bus and the low-voltage bus to assist in absorbing the surge signal.

在本申请的一个实施例中，进一步地，如图18所示，限流电路设置为三个，具体为PTC ₁、PTC ₂和PTC ₃，分别位于交流输入源侧三相母线上，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路中设置有第一吸收电路和第二吸收电路，第一吸收电路和第二吸收电路分别位于母线电容的两侧，其中第二吸收电路中设置有导通元件，具体为第一开关元件，同时第一吸收电路中也设置有第一开关元件，在***中浪涌信号较弱时，第一吸收电路和第二吸收电路第一开关元件断开，通过母线电容和吸收电泳信号；当***中浪涌信号较强时，控制对应的第一开关元件闭合，以使第一吸收电路和/或第二吸收电路接入高压母线和低压母线之间，辅助吸收浪涌信号。 In an embodiment of the present application, further, as shown in FIG. 18, three current limiting circuits, specifically PTC ₁ , PTC ₂ and PTC ₃ , are respectively located on the three-phase bus on the AC input source side. When the power is turned on, the relay is disconnected to allow the temperature-sensitive resistor to connect to the loop, thereby limiting the charging current of the bus capacitor. At the same time, a first absorption circuit and a second absorption circuit are provided in the drive control circuit. The first absorption circuit and the second absorption circuit are respectively located on both sides of the bus capacitor. The second absorption circuit is provided with a conduction element, specifically the first absorption circuit. The first switching element is also provided in the first absorption circuit. When the surge signal is weak in the system, the first switching element of the first absorption circuit and the second absorption circuit are disconnected, and the electrophoretic signal is absorbed through the bus capacitance ; When the surge signal in the system is strong, the corresponding first switching element is controlled to close, so that the first absorption circuit and/or the second absorption circuit are connected between the high-voltage bus and the low-voltage bus to assist in absorbing the surge signal.

在本申请的一个实施例中，进一步地，如图19所示，限流电路设置为三个，具体为PTC ₁、PTC ₂和PTC ₃，分别位于交流输入源侧三相母线上，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路中设置有第一吸收电路和第二吸收电路，第一吸收电路和第二吸收电路分别位于母线电容的两侧，其中第二吸收电路中设置有导通元件，具体为二极管，以使母线上的浪涌信号可以通过二极管进入第二吸收电路，而第二吸收电路上的容性吸收元件的放电电流被二极管截止，不会对母线上的电信号造成影响。同时，电抗器Ldc ₂上并联有第四电阻R ₄，用于降低电抗器Ldc ₂与母线电容间的振荡信号，防止由于电抗器Ldc ₂和母线电容之间的LC振荡效应导致的***波动，以提高***稳定性。 In an embodiment of the present application, further, as shown in FIG. 19, three current limiting circuits, specifically PTC ₁ , PTC _2, and PTC ₃ , are respectively located on the three-phase bus on the AC input source side. When the power is turned on, the relay is disconnected to allow the temperature-sensitive resistor to connect to the loop, thereby limiting the charging current of the bus capacitor. At the same time, the drive control circuit is provided with a first absorption circuit and a second absorption circuit. The first absorption circuit and the second absorption circuit are respectively located on both sides of the bus capacitor. The second absorption circuit is provided with a conductive element, specifically a diode, In this way, the surge signal on the bus can enter the second absorption circuit through the diode, and the discharge current of the capacitive absorption element on the second absorption circuit is cut off by the diode, which will not affect the electrical signal on the bus. At the same time, a fourth resistor R ₄ is connected in parallel to the reactor Ldc ₂ to reduce the oscillating signal between the reactor Ldc ₂ and the bus capacitor, and prevent system fluctuations caused by the LC oscillation effect between the reactor Ldc ₂ and the bus capacitor. To improve system stability.

在本申请的一个实施例中，进一步地，如图20所示，限流电路设置于高压母线上，在首次上电时，继电器断开以使温敏电阻接入回路，进而限制母线电容的充电电流。同时驱动控制电路中设置有第一吸收电路和第二吸收电路，第一吸收电路和第二吸收电路分别位于母线电容的两侧，其中第二吸收电路中设置有导通元件，具体为二极管，以使母线上的浪涌信号可以通过二极管进入第二吸收电路，而第二吸收电路上的容性吸收元件的放电电流被二极管截止，不会对母线上的电信号造成影响。同时，电抗器Ldc ₂上并联有第四电阻R ₄，用于降低电抗器Ldc ₂与母线电容间的振荡信号，防止由于电抗器Ldc ₂和母线电容之间的LC振荡效应导致的***波动，以提高***稳定性。 In an embodiment of the present application, further, as shown in FIG. 20, the current-limiting circuit is arranged on the high-voltage bus. When the power is turned on for the first time, the relay is disconnected to allow the temperature-sensitive resistor to connect to the loop, thereby limiting the capacitance of the bus. recharging current. At the same time, the drive control circuit is provided with a first absorption circuit and a second absorption circuit. The first absorption circuit and the second absorption circuit are respectively located on both sides of the bus capacitor. The second absorption circuit is provided with a conductive element, specifically a diode, In this way, the surge signal on the bus can enter the second absorption circuit through the diode, and the discharge current of the capacitive absorption element on the second absorption circuit is cut off by the diode, which will not affect the electrical signal on the bus. At the same time, a fourth resistor R ₄ is connected in parallel to the reactor Ldc ₂ to reduce the oscillating signal between the reactor Ldc ₂ and the bus capacitor, and prevent system fluctuations caused by the LC oscillation effect between the reactor Ldc ₂ and the bus capacitor. To improve system stability.

在本申请的一个实施例中，进一步地，如图21、图22、图23、图24、图25和图26所示，驱动控制电路包括第三吸收电路，第三吸收电路包括限流元件、容性吸收元件和单向导通元件，其中，限流元件可选用温敏电阻PTC或限流电阻R，以及在温敏电阻PTC或限流电阻R两端并联的第一开关元件。具体地，浪涌能量主要来源于电源输入、样机故障停机时压缩机绕组、交直流侧电感续流以及压缩机动能；当存在浪涌电压时，由于小容量的薄膜电容无法吸收过多的能量，母线电压高于第三吸收电路中容性吸收元件(具体包括电容C ₂和C ₃)的端电压时，第三吸收电路起作用，剩余的能量流入母线电容和第三吸收电路，此时第一开关元件闭合，温敏电阻PTC或限流电阻R被短路，浪涌能量可以被迅速吸收；当供电电源断开或直流母线电压低于固定值(优选设置为200V)，此时判断第一开关元件中无电流流过，因此控制第一开关元件断开(使用交流继电器作为第一开关元件才需要判断第一开关元件是否无电流流过，正常的IGBT，Insulated Gate Bipolar Transistor，绝缘栅双极型晶体管或者直流继电器可以随时断开)，即在上电的时候，温敏电阻PTC或者限流电阻R被串联接入容性吸收元件的回路，达到限流目的；此后闭合第一开关元件以短路掉温敏电阻PTC或限流电阻R，实现快速吸收浪涌能量的目的。 In an embodiment of the present application, further, as shown in FIG. 21, FIG. 22, FIG. 23, FIG. 24, FIG. 25, and FIG. 26, the drive control circuit includes a third absorption circuit, and the third absorption circuit includes a current limiting element. , Capacitive absorption element and unidirectional conduction element, wherein the current limiting element can be a temperature-sensitive resistor PTC or a current-limiting resistor R, and a first switching element connected in parallel at both ends of the temperature-sensitive resistor PTC or current-limiting resistor R. Specifically, the surge energy mainly comes from the power input, the compressor winding when the prototype fails, the AC and DC side inductance freewheeling, and the compressor kinetic energy; when there is a surge voltage, the small-capacity film capacitor cannot absorb too much energy , When the bus voltage is higher than the terminal voltage of the capacitive absorbing element (including capacitors C ₂ and C ₃ ) in the third absorbing circuit, the third absorbing circuit will work, and the remaining energy will flow into the bus capacitor and the third absorbing circuit. The first switching element is closed, the temperature-sensitive resistor PTC or the current-limiting resistor R is short-circuited, and the surge energy can be quickly absorbed; when the power supply is disconnected or the DC bus voltage is lower than a fixed value (preferably set to 200V), the judgment is There is no current flowing in a switching element, so the first switching element is controlled to be turned off (the AC relay is used as the first switching element to determine whether there is no current flowing through the first switching element. Normal IGBT, Insulated Gate Bipolar Transistor, insulated gate Bipolar transistors or DC relays can be disconnected at any time), that is, when power is on, the temperature-sensitive resistor PTC or current-limiting resistor R is connected in series to the circuit of the capacitive absorption element to achieve the purpose of current limiting; after that, the first switch is closed The element short-circuits the temperature-sensitive resistor PTC or current-limiting resistor R to achieve the purpose of quickly absorbing surge energy.

进一步地，如图21所示，限流元件位于单相导通元件与容性吸收元件之间；或如图22所示，限流元件位于高压母线和单相导通元件之间；或如图23所示，限流元件位于容性吸收元件和低压母线之间。Further, as shown in Figure 21, the current limiting element is located between the single-phase conduction element and the capacitive absorption element; or as shown in Figure 22, the current limiting element is located between the high-voltage bus and the single-phase conduction element; or As shown in Figure 23, the current limiting element is located between the capacitive absorption element and the low voltage bus.

进一步地，如图24、图25和图26所示，限流电阻R1(温敏电阻PTC或限流电阻R)可以通过串联两个电阻R ₄和R ₅实现，其中两个电阻R ₄和R ₅的阻值的和等于R ₁的阻值。其中，第一开关元件并联于电阻R4的两端，在***上电时，电阻R ₄和R ₅同时串联进第三限流电路进行限流作用，在上电后的浪涌吸收阶段，闭合开元元件以短接电阻R ₄，此时电阻R ₅独自进行限流作用。 Further, as shown in Figure 24, Figure 25 and Figure 26, the current-limiting resistor R1 (temperature-sensitive resistor PTC or current-limiting resistor R) can be realized by connecting two resistors R ₄ and R _{5 in} series, wherein the two resistors R ₄ and The sum of the resistance values of R ₅ is equal to the resistance value of R ₁ . Among them, the first switching element is connected in parallel to the two ends of the resistor R4. When the system is powered on, the resistors R ₄ and R ₅ are connected in series with the third current limiting circuit for current limiting. In the surge absorption stage after power on, they are closed. The Kaiyuan element short-circuits the resistor R ₄ , and at this time the resistor R ₅ performs the current limiting function alone.

在本申请的一个实施例中，进一步地，如图27所示，驱动控制电路中同时设置有第一吸收电路和第三吸收电路；其中，包括限流元件、容性吸收元件和单向导通元件，限流元件包括限流电阻R ₄和R ₅，R ₅位于单向导通元件和容性吸收元件之间；R ₄位于容性吸收元件和低压母线之间，第一开关元件并联于电阻R ₄的两端；在***上电时，电阻R ₄和R ₅同时串联进第三限流电路进行限流作用，在上电后的浪涌吸收阶段，闭合开元元件以短接电阻R ₄，此时电阻R ₅独自进行限流作用。 In an embodiment of the present application, further, as shown in FIG. 27, a first absorption circuit and a third absorption circuit are simultaneously provided in the drive control circuit; which includes a current limiting element, a capacitive absorption element and a unidirectional conduction The current-limiting element includes current-limiting resistors R ₄ and R ₅ , R ₅ is located between the unidirectional conduction element and the capacitive absorption element; R ₄ is located between the capacitive absorption element and the low-voltage bus, and the first switching element is connected in parallel with the resistor Both ends of R ₄ ; when the system is powered on, resistors R ₄ and R ₅ are connected in series with the third current-limiting circuit for current limiting. In the surge absorption stage after power-on, close the open element to short-circuit the resistor R ₄ At this time, the resistor R ₅ performs the current limiting function alone.

在本申请的一个实施例中，进一步地，如图28和图29所示，驱动控制电路中设置有第四吸收电路。第四吸收电路包括容性吸收元件、阻性吸收元件和限流元件；其中容性吸收元件与限流元件相串联；容性吸收元件包括导通元件、吸收电容、限流电阻R1和放电电阻，吸收电容设置为两个，分别为C ₂和C ₃，R ₂和R ₃分别并联于C ₂、C ₃的两端，用于使C ₂和C ₃放电；导通元件具体为单相导通元件或第一开关元件；阻性吸收元件包括吸收电阻，并联于吸收电阻两端的续流回路，第一开关元件和测流元件，续流回路优选使用反向并联的二极管；当供电电源断开或直流母线电压低于固定值时，若测流元件判断第一开关元件中无电流通过，此时控制第一开关元件断开。 In an embodiment of the present application, further, as shown in FIG. 28 and FIG. 29, a fourth absorption circuit is provided in the driving control circuit. The fourth absorption circuit includes a capacitive absorption element, a resistive absorption element and a current-limiting element; the capacitive absorption element is connected in series with the current-limiting element; the capacitive absorption element includes a conduction element, an absorption capacitor, a current-limiting resistor R1 and a discharge resistor , snubber capacitor is set to two, respectively, and C ₂ C _3, R ₂ and R ₃ are connected in parallel with both ends of the C _2, C _3, and C ₂ for discharge and C _3; conducting element particularly single phase The conduction element or the first switching element; the resistive absorption element includes an absorption resistance, a freewheeling circuit connected in parallel to both ends of the absorption resistance, the first switching element and a current measuring element, the freewheeling circuit preferably uses an anti-parallel diode; when the power supply When it is disconnected or the DC bus voltage is lower than a fixed value, if the current measuring element determines that there is no current passing through the first switching element, the first switching element is controlled to be turned off at this time.

进一步地，如图28所示，阻性元件的输入端连接于导通元件和限流电阻R1之间，阻性元件的输出端连接于低压母线。Further, as shown in FIG. 28, the input end of the resistive element is connected between the conduction element and the current limiting resistor R1, and the output end of the resistive element is connected to the low voltage bus.

进一步地，如图29所示，阻性元件的输入端连接于限流电阻R ₁和吸收电容C ₂之间，阻性元件的输出端连接于低压母线。 Further, as shown, an input terminal connected to the resistive element limiting resistor R ₁ and the capacitance between the _absorber C, the output terminal of the resistive element 29 is connected to the voltage bus bar.

在上述图4至图29对应的实施例中，Lac指的是实际交流测电感模型与输入电源线的电感，其包含电感量及电阻辆，现有机型所使用的交流侧电感值为25mH，500毫欧，输入电源线的电感值小于等于10mH(数值放大)，电阻值不小于0.5欧(实际使用的导线的电阻大约为1.2欧)；Ldc指的是实际直流侧电感模型，其包含电感量及电阻量，Ldc的电感值为4.5mH，120毫欧；R ₄为阻尼电阻，阻尼电阻R ₄在Ldc的选择的电感值为4.5mH时不设置，在容量为6KW的样机上没有设置Ldc，也可以不设置R ₄；其中，Lac和Ldc是为了EMC谐波要求而存在，如果是有EMX谐波要求的区域，样机上可能存在Lac或Ldc，也可以Lac和Ldc共存。而对于无谐波要求区域，Lac和Ldc都是不存在的，但为了解决高频谐波问题(在忽略该问题的情况，可以不使用Ldc电感)，会在电路拓扑的Ldc位置处使用一个电感值较小的Ldc2，并此较小的Ldc2上并联一个小的阻尼电阻R ₄以提高***稳定性。 In the above embodiments corresponding to Figures 4-29, Lac refers to the actual AC inductance measurement model and the inductance of the input power line, which includes the inductance and resistance. The AC side inductance used by the existing models is 25mH , 500 milliohms, the inductance value of the input power cord is less than or equal to 10mH (numerical amplification), and the resistance value is not less than 0.5 ohms (the resistance of the actual wire used is about 1.2 ohms); Ldc refers to the actual DC side inductance model, which includes Inductance and resistance, the inductance value of Ldc is 4.5mH, 120 milliohms; R ₄ is a damping resistor, and the damping resistor R ₄ is not set when the selected inductance value of Ldc is 4.5mH, and it is not available on the prototype with a capacity of 6KW Setting Ldc, or not setting R ₄ ; Among them, Lac and Ldc exist for EMC harmonic requirements. If it is an area with EMX harmonic requirements, Lac or Ldc may exist on the prototype, or Lac and Ldc can coexist. For areas without harmonic requirements, both Lac and Ldc do not exist, but in order to solve the problem of high-frequency harmonics (if this problem is ignored, the Ldc inductor may not be used), one will be used at the Ldc position of the circuit topology Ldc2 with a smaller inductance value, and a small damping resistor R ₄ in parallel with this smaller Ldc2 to improve system stability.

在本申请的一个实施例中，进一步地，驱动控制电路还包括：采样控制电路(图中未示出)，采样控制电路用于采集驱动控制电路的供电信号，根据供电信号控制第一开关元件导通或截止；其中，供电信号包括驱动控制电路交流测的供电信号和母线线路的供电信号。In an embodiment of the present application, further, the drive control circuit further includes: a sampling control circuit (not shown in the figure), the sampling control circuit is used to collect the power supply signal of the drive control circuit, and control the first switching element according to the power supply signal On or off; where the power supply signal includes the power supply signal measured by the drive control circuit and the power supply signal of the bus line.

在该实施例中，如图30所示，驱动控制电路中设置有采样控制电路20，采样控制电路20采集根据电路交流测的供电信号和/或所述母线线路的供电信号，根据供电信号的电压幅值控制第一开关元件导通或截止，进而控制第一吸收电路对浪涌信号的吸收过程。In this embodiment, as shown in FIG. 30, a sampling control circuit 20 is provided in the drive control circuit. The sampling control circuit 20 collects the power supply signal according to the AC measurement of the circuit and/or the power supply signal of the bus line. The voltage amplitude controls the first switching element to be turned on or off, thereby controlling the absorbing process of the surge signal by the first absorbing circuit.

可选地，交流测的供电信号具体为交流电源模块10和滤波电路12之间的电信号。Optionally, the AC measured power supply signal is specifically an electrical signal between the AC power module 10 and the filter circuit 12.

可选地，交流测的供电信号具体为滤波电路12和整流桥14之间的电信号。Optionally, the AC measured power supply signal is specifically an electrical signal between the filter circuit 12 and the rectifier bridge 14.

可选地，母线线路的供电信号包括整流桥14和吸收电路16之间的电信号，具体为整流桥14和电抗器Ldc ₂之间的电信号。 Optionally, the power supply signal of the bus line includes the electrical signal between the rectifier bridge 14 and the absorption circuit 16, specifically the electrical signal between the rectifier bridge 14 and the reactor Ldc ₂ .

可选地，母线线路的供电信号包括吸收电路16和逆变桥18之间的电信号。Optionally, the power supply signal of the bus line includes an electrical signal between the absorption circuit 16 and the inverter bridge 18.

在本申请的第二方面的实施例中，提供了一种空调器，包括：电机；以及如上述任一实施例所述的驱动控制电路，所述电机的信号输入端连接至所述驱动控制电路，所述驱动控制电路输出的驱动信号用于驱动所述电机运行。因此该空调器具有上述任一实施例所述的驱动控制电路的全部有益效果，在此不再赘述。In an embodiment of the second aspect of the present application, an air conditioner is provided, including: a motor; and the drive control circuit according to any one of the above embodiments, the signal input terminal of the motor is connected to the drive control Circuit, the drive signal output by the drive control circuit is used to drive the motor to run. Therefore, the air conditioner has all the beneficial effects of the drive control circuit described in any of the above embodiments, and will not be repeated here.

如图32和图33所示，在本申请第第三方面的实施例中，提供了一种驱动控制电路，驱动控制电路包括：电抗器Ldc，用于吸收驱动控制电路驱动负载运行过程中产生的浪涌信号，电抗器Ldc接入于电网和负载之间；母线电容C ₁，母线电容C ₁用于提供负载上电所需的启动电压，母线电容C ₁还用于吸收浪涌信号，母线电容C ₁接入于逆变桥输入侧的母线线路中；第一阻性元件R ₁和第二开关元件，第二开关元件被配置为控制第一阻性元件R ₁吸收浪涌信号，第一阻性元件R ₁和第二开关元件串联后串接在高压母线和低压母线之间；单向导通元件或第三开关元件；第一容性元件C ₂，单向导通元件或第三开关元件被配置为限制第一容性元件C ₂吸收高压母线上的浪涌信号，单向导通元件或第三开关元件与第一容性元件C ₂串联后串接在高压母线和低压母线之间；控制芯片(图中未示出)，控制芯片与第二开关元件相连接，其中，控制芯片根据高压母线的电压信号与预设电压的大小关系控制第一阻性元件R ₁工作。 As shown in FIG. 32 and FIG. 33, in an embodiment of the third aspect of the present application, a drive control circuit is provided. The drive control circuit includes: a reactor Ldc, which is used to absorb the load generated during the operation of the drive control circuit to drive the load. The reactor Ldc is connected between the power grid and the load; the bus capacitor C ₁ and the bus capacitor C _{1 are} used to provide the starting voltage required by the load, and the bus capacitor C _{1 is} also used to absorb the surge signal. The bus capacitor C _{1 is} connected to the bus line on the input side of the inverter bridge; the first resistive element R ₁ and the second switching element, the second switching element is configured to control the first resistive element R _{1 to} absorb the surge signal, The first resistive element R ₁ and the second switching element are connected in series between the high-voltage bus and the low-voltage bus; the one-way conducting element or the third switching element; the first capacitive element C ₂ , the one-way conducting element or the third The switching element is configured to limit the first capacitive element C _{2 from} absorbing the surge signal on the high-voltage bus. The unidirectional conducting element or the third switching element is connected in series with the first capacitive element C _{2 and} then connected in series between the high-voltage bus and the low-voltage bus. Between; control chip (not shown in the figure), the control chip is connected to the second switching element, wherein the control chip controls the first resistive element R _{1 to} work according to the magnitude relationship between the voltage signal of the high-voltage bus and the preset voltage.

具体地，在单向导通元件D ₁与第一容性元件C ₂串联时，驱动控制电路包括：逆变桥、母线电容C ₁、电抗器Ldc和单向导通元件D ₁，其中逆变桥驱动控制负载运行，如控制电机运行，由于母线电容C ₁的容值较低，因此在高压母线上形成的浪涌信号无法确保完全吸收，通过设置电抗器Ldc，来吸收驱动控制电路驱动负载运行过程中产生的浪涌信号，进而将来自逆变桥侧的浪涌信号进行阻断，使得来自逆变桥一侧的浪涌信号经由单向导通元件D ₁与第一容性元件C ₂组成的第一吸收路径进行释放，实现对浪涌信号的控制，同时确保母线上的浪涌信号完全被吸收，还设置第一阻性元件R ₁和第二开关元件构成的第二吸收路径来对浪涌信号进行吸收，具体地，控制芯片根据母线信号与电压阈值的大小关系控制第一阻性元件R ₁是否吸收浪涌信号，第一吸收路径和第二吸收路径的设置提高了电路中的浪涌信号的吸收能力，提高了电路的可靠性，具体地，单向导通元件D ₁的阳极与高压母线相连接，单向导通元件D ₁的阴极经由第一容性元件C ₂与低压母线相连接，其中，单向导通元件D ₁可以是具有单向导通特性的元件，诸如二极管等，电压阈值与高压母线的电压相关。 Specifically, when the unidirectional conducting element D ₁ and the first capacitive element C _{2 are} connected in series, the drive control circuit includes: an inverter bridge, a bus capacitor C ₁ , a reactor Ldc and a unidirectional conducting element D ₁ , wherein the inverter bridge Drive and control the load operation, such as controlling the operation of the motor. Because the capacitance of the bus capacitor C ₁ is low, the surge signal formed on the high-voltage bus cannot be completely absorbed. By setting the reactor Ldc, the drive control circuit can be used to drive the load. The surge signal generated in the process further blocks the surge signal from the inverter bridge side, so that the surge signal from the inverter bridge side is composed of the unidirectional conducting element D ₁ and the first capacitive element C ₂ The first absorption path is released to realize the control of the surge signal, while ensuring that the surge signal on the bus is completely absorbed, and the second absorption path formed by the first resistive element R ₁ and the second switching element is also provided to correct The surge signal is absorbed. Specifically, the control chip controls whether the first resistive element R ₁ absorbs the surge signal according to the relationship between the bus signal and the voltage threshold. The arrangement of the first absorption path and the second absorption path improves the circuit The surge signal absorption capability improves the reliability of the circuit. Specifically, the anode of the unidirectional conducting element D ₁ is connected to the high-voltage bus, and the cathode of the uni conducting element D ₁ is connected to the low-voltage bus via the first capacitive element C ₂ is connected, wherein the unidirectional conductive element D ₁ may be a single element having a conduction characteristic, such as voltage-dependent diode, the voltage threshold and the high-voltage bus.

具体地，如图31所示，第一阻性元件R ₁和第二开关元件在驱动控制电路中包含温敏电阻PTC ₁₁、温敏电阻PTC ₁₂和温敏电阻PTC ₁₃时的电路示意图，其中每一个温敏电阻并联设置一个继电器开关。 Specifically, as shown in FIG. 31, the first resistive element R ₁ and the second switching element include a temperature-sensitive resistor PTC ₁₁ , a temperature-sensitive resistor PTC _12, and a temperature-sensitive resistor PTC ₁₃ in the driving control circuit. Each temperature-sensitive resistor is provided with a relay switch in parallel.

在本申请的一个实施例中，如图32和图33所示，驱动控制电路还包括：第二阻性元件R ₂，第二阻性元件R ₂用于释放第一容性元件C ₂中的浪涌信号，第二阻性元件R ₂与第一容性元件C ₂并联。 In an embodiment of the present application, as shown in FIGS. 32 and 33, the drive control circuit further includes: a second resistive element R ₂ , and the second resistive element R _{2 is} used to release the first capacitive element C ₂ surge signal, a second resistive element and a first capacitive element R ₂ C ₂ connected in parallel.

在该实施例中，在第一容性元件C ₂吸收高压母线上的浪涌信号后，利用设置的第二阻性元件R ₂来释放第一容性元件C ₂中的浪涌信号，第二阻性元件R ₂的设置提高了驱动控制电路的可靠性。 In this embodiment, after the first capacitive element C ₂ absorbs the surge signal on the high voltage bus, the second resistive element R _{2 is provided} to release the surge signal in the first capacitive element C ₂ . The arrangement of the two resistive elements R ₂ improves the reliability of the drive control circuit.

在本申请的一个实施例中，如图32和图33所示，还包括：第二容性元件C ₃，用于吸收高压母线上的浪涌信号，第二容性元件C ₃与第一容性元件C ₂串联。 In an embodiment of the present application, as shown in FIG. 32 and FIG. 33, it further includes: a second capacitive element C ₃ for absorbing the surge signal on the high-voltage bus, the second capacitive element C ₃ and the first The capacitive element C _{2 is} connected in series.

在该实施例中，在高压母线的压力较大时，在第一容性元件C ₂的基础上串联第二容性元件C ₃，以提高高压母线的浪涌信号的吸收能力。 In this embodiment, when the pressure of high-voltage bus is large, a second capacitive element C ₃ series, in the first capacitive element C ₂ of the order to increase the absorption capacity of the high-voltage surge signal bus.

在本申请的一个实施例中，如图32和图33所示，还包括：第三阻性元件R ₃，第三阻性元件R ₃用于释放第二容性元件C ₃中的浪涌信号，第三阻性元件R ₃与第二容性元件C ₃并联。 In an embodiment of the present application, as shown in FIGS. 32 and 33, it further includes: a third resistive element R ₃ , and the third resistive element R _{3 is} used to release the surge in the second capacitive element C ₃ signal, a third resistive element R _₃ C ₃ connected in parallel with the second capacitive element.

在该实施例中，在设置第二容性元件C ₃的情况下，通过设置第三阻性元件R ₃与第二阻性元件R ₂配合使用，来平衡第一容性元件C ₂和第二容性元件C ₃两端的电压，同时第三阻性元件R ₃还用于对第二容性元件C ₃上的浪涌信号进行释放，以提高了驱动控制电路的可靠性。 In this embodiment, when the second capacitive element C ₃ is provided, the third resistive element R _{3 is used in} conjunction with the second resistive element R ₂ to balance the first capacitive element C ₂ and the second resistive element R ₂ . The voltage across the two capacitive elements C ₃ and the third resistive element R ₃ are also used to release the surge signal on the second capacitive element C ₃ to improve the reliability of the drive control circuit.

在本申请的一个实施例中，如图32和图33所示，还包括：第四阻性元件R ₄，用于限制流向第一容性元件C ₂和/或第二容性元件C ₃的电流，第四阻性元件R ₄、第二开关元件以及第一容性元件C ₂相串联；或第四阻性元件R ₄、第二开关元件、第一容性元件C ₂以及第二容性元件C ₃相串联。 In an embodiment of the present application, as shown in FIG. 32 and FIG. 33, it further includes: a fourth resistive element R ₄ for restricting flow to the first capacitive element C ₂ and/or the second capacitive element C ₃ The fourth resistive element R ₄ , the second switching element, and the first capacitive element C ₂ are connected in series; or the fourth resistive element R ₄ , the second switching element, the first capacitive element C ₂ and the second The capacitive element C is connected in series with ₃ phases.

在该实施例中，通过设置与第一容性元件C ₂和/或第二容性元件C ₃串联的第四阻性元件R ₄，利用第四阻性元件R ₄的对流向第一容性元件C ₂和/或第二容性元件C ₃的电流进行限制，防止第一容性元件和/或第二容性元件及并联的阻性元件由于过流而损坏，提高了驱动控制电路的可靠性。 In this embodiment, by arranging a fourth resistive element R _{4 in} series with the first capacitive element C ₂ and/or the second capacitive element C ₃ , the convection flow of the fourth resistive element R ₄ toward the first capacitive element is used. The current of the capacitive element C ₂ and/or the second capacitive element C ₃ is limited to prevent the first capacitive element and/or the second capacitive element and the parallel resistive element from being damaged due to overcurrent, which improves the drive control circuit Reliability.

在本申请的一个实施例中，如图32和图33所示，还包括：第一放电元件，用于释放第一阻性元件R ₁中的尖峰电压信号，第一放电元件与第一阻性元件R ₁并联。 In one embodiment of the present application example, as shown in FIGS. 32 and 33, further comprising: a first discharge element for releasing a first resistive element R ₁ is a spike voltage signal, a first resistive element and the first discharge The sex element R _{1 is} connected in parallel.

在该实施例中，通过设置第一放电元件，在第一阻性元件R ₁吸收高压母线上的浪涌信号后，利用设置与第一阻性元件R ₁并联的第一放电元件来释放第一阻性元件R ₁上产生的尖峰电压信号，第一放电元件的设置提高了驱动控制电路的可靠性。 In this embodiment, by setting the first discharging element, after the first resistive element R ₁ absorbs the surge signal on the high voltage bus, the first discharging element connected in parallel with the first resistive element R _{1 is} used to release the a voltage spike signal generated in the resistive element ₁ a R, a first discharge element improves the reliability of the drive control circuit.

进一步地，如图34所示，第一放电元件为二极管。Further, as shown in FIG. 34, the first discharge element is a diode.

在本申请一个实施例中，如图35所示，第三开关元件与控制芯片相连接，控制芯片用于收集母线信号，并根据母线信号控制第三开关元件导通或截止。In an embodiment of the present application, as shown in FIG. 35, the third switching element is connected to the control chip, and the control chip is used to collect bus signals and control the third switching element to be turned on or off according to the bus signals.

在该技术方案中，设置的第三开关元件实现第一吸收路径的可控性，控制芯片根据母线信号与电压阈值的大小关系控制第三开关元件，进而实现第一容性元件C ₂吸收浪涌信号的控制。通过设置第三开关元件，提高了驱动控制电路的可控性，在提高浪涌吸收能力的前提下，提高了驱动控制电路的可靠性。 In this technical solution, the third switching element is provided to realize the controllability of the first absorption path, and the control chip controls the third switching element according to the magnitude relationship between the bus signal and the voltage threshold, thereby realizing the first capacitive element C _{2 to} absorb the wave. Control of surge signals. By providing the third switching element, the controllability of the drive control circuit is improved, and the reliability of the drive control circuit is improved on the premise of improving the surge absorption capability.

如图29、图30、图31、图32、图33、图34和图35所示，其中，图35是图33中浪涌吸收电路的设置位置的一个实施例，图28和图29是图35可以实施的连接关系。根据测流元件收集到有无过流电流信号控制第二开关元件导通或者截止。As shown in Figure 29, Figure 30, Figure 31, Figure 32, Figure 33, Figure 34 and Figure 35, where Figure 35 is an example of the placement of the surge absorption circuit in Figure 33, Figure 28 and Figure 29 are Figure 35 can be implemented connection relationship. The second switching element is controlled to be turned on or off according to whether an overcurrent current signal is collected by the current measuring element.

在本申请一个实施中，如图33和图37所示，预设电压包括第一电压阈值V ₂和第二电压阈值V ₁；控制芯片具体用于：在高压母线的电压信号大于或等于第一电压阈值V ₂小于第二电压阈值V ₁的情况下，控制第二开关元件截止，第三开关元件导通；在高压母线的电压信号大于或等于第二电压阈值V ₁的情况下，控制第二开关元件和第三开关元件导通；在高压母线的电压信号小于第一电压阈值V ₂的情况下，控制第二开关元件和第三开关元件截止。 In an implementation of the present application, as shown in FIG. 33 and FIG. 37, the preset voltage includes a first voltage threshold V ₂ and a second voltage threshold V ₁ ; the control chip is specifically configured to: the voltage signal on the high-voltage bus is greater than or equal to the first When a voltage threshold V _{2 is} less than the second voltage threshold V ₁ , the second switching element is controlled to be turned off and the third switching element is turned on; when the voltage signal of the high voltage bus is greater than or equal to the second voltage threshold V ₁ , control The second switching element and the third switching element are turned on; when the voltage signal of the high-voltage bus is less than the first voltage threshold V ₂ , the second switching element and the third switching element are controlled to be turned off.

在该技术方案中，通过将高压母线的电压信号与第一电压阈值V ₂和第二电压阈值V ₁进行比较，并根据比较结果分别控制第一容性元件C ₂和第一阻性元件R ₁来吸收浪涌信号，具体地，在高压母线的电压信号大于或等于第一电压阈值V ₂小于第二电压阈值V ₁的情况下，控制第二开关元件截止，第三开关元件导通，利用第一容性元件C ₂来进行浪涌信号的吸收，在高压母线的电压信号大于或等于第二电压阈值V ₁的情况下，控制第二开关元件和第三开关元件导通，进而实现快速吸收浪涌，避免因为高压母线上的电压过高致使驱动控制电路的元器件损坏；在高压母线的电压信号小于第一电压阈值V ₂的情况下，控制第二开关元件和第三开关元件截止，进而通过母线电容来进行浪涌信号的吸收，同时提高了第一吸收路径和第二吸收路径中元器件的寿命，其中，第一电压阈值V ₂和第二电压阈值V ₁根据母线电容C ₁以及驱动控制电路浪涌吸收能力相关。 In this technical solution, the voltage signal of the high-voltage bus is compared with the first voltage threshold V ₂ and the second voltage threshold V ₁ , and the first capacitive element C ₂ and the first resistive element R are respectively controlled according to the comparison result. _1. To absorb the surge signal, specifically, when the voltage signal of the high-voltage bus is greater than or equal to the first voltage threshold V _{2 and} less than the second voltage threshold V ₁ , the second switching element is controlled to be turned off and the third switching element is turned on, The first capacitive element C _{2 is} used to absorb the surge signal. When the voltage signal of the high-voltage bus is greater than or equal to the second voltage threshold V ₁ , the second switching element and the third switching element are controlled to be turned on to achieve Quickly absorb surges to avoid damage to the components of the drive control circuit due to excessive voltage on the high-voltage bus; when the voltage signal of the high-voltage bus is less than the first voltage threshold V ₂ , the second switching element and the third switching element are controlled Cut off, and then through the bus capacitance to absorb the surge signal, while improving the life of the components in the first absorption path and the second absorption path, where the first voltage threshold V ₂ and the second voltage threshold V ₁ according to the bus capacitance C ₁ is related to the surge absorption capacity of the drive control circuit.

在本申请的一个实施例中，驱动控制电路还包括：整流桥，整流桥对交流信号进行整流后输出为母线信号，母线信号经高压母线和低压母线输出至母线电容、逆变桥和负载，其中，控制芯片根据交流信号控制第二开关元件的导通状态和第三开关元件的导通状态。In an embodiment of the present application, the drive control circuit further includes: a rectifier bridge, which rectifies the AC signal and outputs it as a bus signal. The bus signal is output to the bus capacitor, inverter bridge and load via the high-voltage bus and the low-voltage bus. Wherein, the control chip controls the conduction state of the second switching element and the conduction state of the third switching element according to the AC signal.

具体地，控制芯片根据交流信号与电压阈值的对应关系控制第二开关元件的导通状态和第三开关元件的导通状态，其中，电压阈值与母线信号的电压阈值对应设置。Specifically, the control chip controls the conduction state of the second switching element and the conduction state of the third switching element according to the corresponding relationship between the AC signal and the voltage threshold, wherein the voltage threshold is set corresponding to the voltage threshold of the bus signal.

如图33和图37所示，在驱动控制电路首次上电时，开关元件断开，输入电源经电抗器Lac、滤波电路、整流桥、电抗器Ldc给母线电容C ₁充电，同时通过单向导通元件D ₁往第一容性元件C ₂和第二容性元件C ₃充电，第一阻性元件R ₁，阻值与设定的母线电压保护阈值、第二开关元件的过电流能力相关，值得指出的是，第四阻性元件R ₄及第一容性元件C ₂的选择与第一阻性元件R ₁的电感量相关，如果第一阻性元件R ₁是无感电阻，则可以不使用第四阻性元件R ₄、第一容性元件C ₂以及第一放电元件。第一放电元件可以选择二极管，即通过反向并联二极管的方式进行放电，反向并联二极管的选择与第一阻性元件R ₁的电感量及阻值相关。 As shown in Figure 33 and Figure 37, when the drive control circuit is powered on for the first time, the switching element is disconnected, and the input power is charged to the bus capacitor C ₁ through the reactor Lac, filter circuit, rectifier bridge, and reactor Ldc. The first capacitive element C ₂ and the second capacitive element C _{3 are} charged through the element D _{1. The} resistance value of the first resistive element R ₁ is related to the set bus voltage protection threshold and the over-current capability of the second switching element worth noting that the fourth resistive element R and a first capacitive element selected ₄ C ₂ related to the inductance of the first resistive element of R _1, if the first resistive element R ₁ is non-inductive resistor, the The fourth resistive element R ₄ , the first capacitive element C ₂ and the first discharge element may not be used. The first discharging element can be a diode, that is, discharging is performed by means of anti-parallel diodes. The selection of the anti-parallel diode is related to the inductance and resistance of the first resistive element R ₁ .

在导通元件D ₁为二极管的情况下，样机正常运行时，第一容性元件C ₂和第二容性元件C ₃上的电压维持在直流母线电压最大值点，第一阻性元件R ₁上的第二开关元件断开，浪涌能量主要来源于电源输入、样机故障停机时压缩机绕组、交直流侧电感续流以及压缩机动能；当存在浪涌信号时，由于小容量的母线电容C ₁无法吸收过多的能量，母线电压高于浪涌第一容性元件C ₂和第二容性元件C ₃端电压时，第一容性元件C ₂和第二容性元件C ₃起作用，剩余的能量流入母线电容C ₁和第一容性元件C ₂和第二容性元件C ₃，随着浪涌能量被吸收，高压母线电压缓慢升高(第一容性元件C ₂和第二容性元件C ₃的容值越大，高压母线的电压抬升越慢)；当高压母线电压高于某个设定值时(如图37的V1，可设为720V)，第一阻性元件R ₁介入，开关元件开始以脉冲宽度调制的形式或固定形式导通；以此保证母线电压在高压母线上的电压出现时尽可能平稳。随着浪涌能力被吸收，母线电压开始降低，当低于某个设定值(如图37的V2，可设为700V)，开关元件断开。 In the case that the conducting element D ₁ is a diode, when the prototype is operating normally, the voltage on the first capacitive element C ₂ and the second capacitive element C ₃ is maintained at the maximum point of the DC bus voltage, and the first resistive element R The second switching element on ₁ is disconnected, and the surge energy mainly comes from the power input, the compressor winding when the prototype fails, the AC and DC side inductance freewheeling and the compressor kinetic energy; when there is a surge signal, due to the small capacity bus when the capacitor C ₁ can not absorb too much energy, the surge voltage is greater than a first capacitive element C _2, and C ₃ terminal voltage of the second capacitive element, a first capacitive element C _2, and a second capacitive element C ₃ The remaining energy flows into the bus capacitor C ₁ and the first capacitive element C ₂ and the second capacitive element C _3. As the surge energy is absorbed, the high-voltage bus voltage slowly rises (the first capacitive element C ₂ and a second capacitive element C ₃ is larger capacitance value, raising the voltage of the high voltage bus slower); when the high voltage is greater than a set value (V1 37 in the figure, can be set to 720V), a first The resistive element R ₁ intervenes, and the switching element starts to conduct in the form of pulse width modulation or a fixed form; this ensures that the bus voltage is as stable as possible when the voltage on the high voltage bus appears. As the surge capacity is absorbed, the bus voltage begins to decrease. When it is lower than a certain set value (V2 in Figure 37, which can be set to 700V), the switching element is turned off.

在导通元件D ₁为开关元件的情况下，样机上电时，两个开关元件均断开，正常运行时母线电容C ₁工作，(第一容性元件C ₂和第二容性元件C ₃)浪涌能量主要来源于电源输入、样机故障停机时压缩机绕组、交直流侧电感续流以及压缩机动能；当存在浪涌电压时，由于小容量的母线电容C ₁(薄膜电容)无法吸收过多的能量，当高压母线的电压高于某个固定值(如680V)时，第一容性元件C ₂和第二容性元件C ₃的开关元件闭合，此时浪涌能量几乎全部进入第一容性元件C ₂和第二容性元件C ₃吸收，此时母线电压可能会先减少，后缓慢上升；当高压母线的电压上升到高于某个设定值时(如图37的V1，可设为720V)，第一阻性元件R ₁介入，开关元件开始以脉冲宽度调制形式或固定形式导通；以此保证母线电压在浪涌电压出现时尽可能平稳。随着浪涌能力被吸收，母线电压开始降低，当低于某个设定值(如图37的V2，可设为700V)，开关元件断开。 In the case that the conduction element D ₁ is a switching element, when the prototype is powered on, both switching elements are disconnected. During normal operation, the bus capacitor C ₁ works, (the first capacitive element C ₂ and the second capacitive element C ₃ ) The surge energy mainly comes from the power input, the compressor winding when the prototype fails, the AC and DC side inductance freewheeling, and the compressor kinetic energy; when there is a surge voltage, the small-capacity bus capacitor C ₁ (film capacitor) cannot Absorb too much energy. When the voltage of the high-voltage bus is higher than a certain fixed value (such as 680V), the switching elements of the first capacitive element C ₂ and the second capacitive element C ₃ are closed, and the surge energy is almost all Enter the first capacitive element C ₂ and the second capacitive element C _{3 to} absorb. At this time, the bus voltage may decrease first and then slowly increase; when the voltage of the high voltage bus rises above a certain set value (as shown in Figure 37 the V1, can be set to 720V), a first resistive element R ₁ intervening switching element begins to pulse width modulation or immobilized form conductive; in order to ensure the smoothest possible when the surge voltage appears in the bus voltage. As the surge capacity is absorbed, the bus voltage begins to decrease. When it is lower than a certain set value (V2 in Figure 37, which can be set to 700V), the switching element is turned off.

其中，Lac指实际交流侧电感模型与输入电源线电感，其包含电感量及电阻量。在本申请的一个实施例中，如图36所示，电抗器Ldc并联第五阻性元件R ₅，作为***阻尼电阻，提升***稳定性。 Among them, Lac refers to the actual AC side inductance model and the input power line inductance, which includes inductance and resistance. In an embodiment of the present application, as shown in FIG. 36, the reactor Ldc is connected in parallel with the fifth resistive element R ₅ , which serves as a system damping resistor to improve system stability.

值得指出的是，Lac和Ldc是为了EMC(Electro Magnetic Compatibility，电磁兼容性，是指设备或***在其电磁环境中符合要求运行并不对其环境中的任何设备产生无法忍受的电磁干扰的能力)谐波要求而存在，如果是有谐波要求区域，样机上可能存在Lac也可能存在Ldc，甚至可能Lac和Ldc共存。而对于无谐波要求区域，Lac和Ldc都是不存在的，但为了高频谐波问题(如果忽略该问题，可以不使用Ldc电感)，会在电路拓扑的Ldc位置处使用一个较小的Ldc2，此较小的Ldc2上并联一个小的阻尼电阻是为了提高***稳定性。It is worth pointing out that Lac and Ldc are for EMC (Electro Magnetic Compatibility, electromagnetic compatibility, which refers to the ability of a device or system to meet the requirements in its electromagnetic environment and not produce intolerable electromagnetic interference to any equipment in its environment) Harmonic requirements exist. If it is an area with harmonic requirements, there may be Lac or Ldc on the prototype, and even Lac and Ldc may coexist. For areas without harmonic requirements, both Lac and Ldc do not exist, but for high-frequency harmonic problems (if you ignore this problem, you can not use Ldc inductors), a smaller one will be used at the Ldc position of the circuit topology. Ldc2, this smaller Ldc2 is connected in parallel with a small damping resistor to improve system stability.

PTC是Positive Temperature Coefficient的缩写，意思是正的温度系数，泛指正温度系数很大的半导体材料或元器件。通常我们提到的PTC是指正温度系数热敏电阻。PTC is the abbreviation of Positive Temperature Coefficient, which means positive temperature coefficient, and generally refers to semiconductor materials or components with a large positive temperature coefficient. Usually we mentioned PTC refers to positive temperature coefficient thermistor.

通过导通元件D ₁和第二开关元件的配合使用，实现保证母线电压低于设计的最高电压(如720V)，近而提高了驱动控制电路的稳定性，同时可以减小导通元件D ₁和第二开关元件所在路径中的器件容值和阻值，进而降低成本。 The combination of the conduction element D ₁ and the second switching element ensures that the bus voltage is lower than the designed maximum voltage (such as 720V), which improves the stability of the drive control circuit and reduces the conduction element D ₁ And the capacitance and resistance of the device in the path where the second switching element is located, thereby reducing the cost.

在本申请第四方面的实施例中，提供了一种控制器，包括如上述任一项驱动控制电路，因此该控制器具有上述任一实施例的驱动控制电路的全部有益效果，在此不再赘述。In the embodiment of the fourth aspect of the present application, a controller is provided, including any one of the above-mentioned drive control circuits. Therefore, the controller has all the beneficial effects of the drive control circuit of any one of the above-mentioned embodiments. Repeat it again.

在本申请第五方面的实施例中，提供了一种空调器，包括：电机；以及如上述任一技术方案的驱动控制电路，电机的信号输入端连接至驱动控制电路，驱动控制电路输出的驱动信号用于驱动电机运行。因此该空调器具有上述任一实施例的驱动控制电路的全部有益效果，在此不再赘述。In an embodiment of the fifth aspect of the present application, there is provided an air conditioner, including: a motor; and a drive control circuit as in any of the above technical solutions, the signal input of the motor is connected to the drive control circuit, and the drive control circuit outputs The drive signal is used to drive the motor to run. Therefore, the air conditioner has all the beneficial effects of the drive control circuit of any one of the above embodiments, and will not be repeated here.

如图38所示，在本申请的第六方面的实施例中，驱动控制电路包括：逆变桥，用于驱动控制负载运行，逆变桥接入于高压母线和低压母线之间；电抗器，用于吸收驱动控制电路驱动负载运行过程中产生的浪涌信号，电抗器接入于电网和负载之间；母线电容，用于提供负载上电所需的启动电压，母线电容还用于吸收浪涌信号，母线电容接入于逆变桥输入侧的母线线路中；驱动控制电路还包括：阻性吸收电路，用于吸收母线线路上的浪涌信号，阻性吸收电路与母线电容并联；第四开关元件，用于控制阻性吸收电路对浪涌信号的吸收过程，第四开关元件与阻性吸收电路串联，第四开关元件导通时，阻性吸收电路吸收浪涌信号，第四开关元件截止时，阻性吸收电路停止吸收浪涌信号。As shown in FIG. 38, in the embodiment of the sixth aspect of the present application, the drive control circuit includes: an inverter bridge for driving and controlling the operation of the load, the inverter bridge is connected between the high-voltage bus and the low-voltage bus; a reactor , Used to absorb the surge signal generated during the operation of the drive control circuit to drive the load, the reactor is connected between the grid and the load; the bus capacitor is used to provide the starting voltage required for the load to be powered on, and the bus capacitor is also used to absorb For the surge signal, the bus capacitor is connected to the bus line on the input side of the inverter bridge; the drive control circuit also includes: a resistive absorption circuit for absorbing the surge signal on the bus line, and the resistive absorption circuit is connected in parallel with the bus capacitor; The fourth switching element is used to control the resistive absorption circuit absorbing the surge signal. The fourth switching element is connected in series with the resistive absorption circuit. When the fourth switching element is turned on, the resistive absorption circuit absorbs the surge signal. When the switching element is turned off, the resistive absorption circuit stops absorbing the surge signal.

本申请实施例提供的驱动控制电路，通过将阻性吸收电路与母线电容并联，来辅助母线电容吸收母线上的浪涌信号，同时通过将第四开关元件与阻性吸收电路串联，来控制阻性吸收电路对浪涌信号的吸收过程。具体来说，样机正常运行时，母线电压最大值会远小于母线电压保护阈值(可根据实际情况进行设定)，无需阻性吸收电路介入，因此第四开关元件不会起作用；浪涌能量主要来源于电源输入、样机故障停机时电机绕组、交直流侧电感续流以及电机动能，当浪涌信号来临时，由于小容量的母线电容(如薄膜电容或者小容量电解电容)吸收浪涌能力有限，母线电压会快速上升，一旦母线电压超过保护阈值，可能会损坏元器件，为保护元器件不受高压损坏(主要为智能功率模块及电容等元器件)，第四开关元件开通，阻性吸收电路开始吸收浪涌，母线电压会快速下降，当母线电压处于合理范围时(可根据实际情况进行设定)，第四开关元件关闭，阻性吸收电路结束本阶段的浪涌吸收过程。通过本申请提供的驱动控制电路，可以有效缓解母线电容对浪涌信号吸收差的情况，进而提升母线电压的稳定性和可靠性。The drive control circuit provided by the embodiment of the present application assists the bus capacitor to absorb the surge signal on the bus by connecting the resistive absorption circuit and the bus capacitor in parallel, and at the same time, controls the resistance by connecting the fourth switching element in series with the resistive absorption circuit. The absorption process of the surge signal by the sexual absorption circuit. Specifically, when the prototype is running normally, the maximum bus voltage will be much smaller than the bus voltage protection threshold (which can be set according to the actual situation), without the intervention of resistive absorption circuit, so the fourth switching element will not work; surge energy Mainly comes from the power input, the motor winding when the prototype fails, the AC and DC side inductance freewheeling, and the kinetic energy of the motor. When a surge signal comes, the small-capacity bus capacitor (such as film capacitor or small-capacity electrolytic capacitor) absorbs the surge Limited, the bus voltage will rise rapidly. Once the bus voltage exceeds the protection threshold, the components may be damaged. To protect the components from high voltage damage (mainly components such as smart power modules and capacitors), the fourth switching element is turned on, resistive The absorption circuit starts to absorb the surge, and the bus voltage will drop rapidly. When the bus voltage is within a reasonable range (set according to the actual situation), the fourth switching element is turned off, and the resistive absorption circuit ends the surge absorption process at this stage. The drive control circuit provided by the present application can effectively alleviate the poor absorption of the surge signal by the bus capacitor, thereby improving the stability and reliability of the bus voltage.

在本申请的第一个实施例中，可选地，阻性吸收电路包括：第五阻性元件，用于对浪涌信号进行吸收，第五阻性元件接入于高压母线和低压母线之间。In the first embodiment of the present application, optionally, the resistive absorption circuit includes: a fifth resistive element for absorbing surge signals, and the fifth resistive element is connected to one of the high-voltage bus and the low-voltage bus. between.

在该实施例中，阻性吸收电路包括第五阻性元件，通过将第五阻性元件接入于高压母线和低压母线之间，来吸收母线上的浪涌信号。其中，第五阻性元件的阻值、功率和母线电压保护阈值、第四开关元件的过电流能力、吸收的能量相关，可选地，第五阻性元件为一个或多个串联连接的电阻，电阻可以有感电阻或无感电阻，在此不做具体限定，通过对电阻型号的选择，可以实现对浪涌信号的快速吸收，保证母线电压快速下降。In this embodiment, the resistive absorption circuit includes a fifth resistive element, and the fifth resistive element is inserted between the high-voltage bus and the low-voltage bus to absorb the surge signal on the bus. Among them, the resistance of the fifth resistive element, power and bus voltage protection threshold, the overcurrent capability of the fourth switching element, and the energy absorbed are related. Optionally, the fifth resistive element is one or more resistors connected in series. , The resistance can be inductive or non-inductive, and there is no specific limitation here. By selecting the resistance model, the surge signal can be quickly absorbed and the bus voltage can be quickly reduced.

在本申请的一个实施例中，第四开关元件为功率开关或者继电器；功率开关或者继电器，用于控制阻性吸收电路对浪涌信号的吸收过程。In an embodiment of the present application, the fourth switching element is a power switch or relay; the power switch or relay is used to control the absorbing process of the surge signal by the resistive absorbing circuit.

在本申请的另一个实施例中，第四开关元件为功率开关或继电器，具体地，如图39、图40、图41，图43、图44、图47和图48所示，第四开关元件为功率开关。In another embodiment of the present application, the fourth switching element is a power switch or a relay. Specifically, as shown in FIGS. 39, 40, 41, 43, 44, 47 and 48, the fourth switch The component is a power switch.

在本申请的一个实施例中，可选地，阻性吸收电路还包括：第二放电元件，用于对第五阻性元件的尖峰电压进行放电，第二放电元件与第五阻性元件并联。In an embodiment of the present application, optionally, the resistive absorption circuit further includes: a second discharge element configured to discharge the peak voltage of the fifth resistive element, and the second discharge element is connected in parallel with the fifth resistive element .

在该实施例中，阻性吸收电路还包括第二放电元件，使用第二放电元件与第五阻性元件并联，作为第五阻性元件的尖峰电压的释放回路，防止第四开关元件断开时第五阻性元件产生尖峰电压，从而对驱动控制电路造成影响或导致元器件损坏。In this embodiment, the resistive absorption circuit further includes a second discharge element, which is used in parallel with the fifth resistive element as a release circuit for the peak voltage of the fifth resistive element to prevent the fourth switching element from being disconnected At this time, the fifth resistive element generates a spike voltage, thereby affecting the drive control circuit or causing damage to the components.

在本申请的另一实施例中，可选地，第二放电元件为单向导通元件。具体地，如图39所示，第二放电元件为二极管，二极管用于对第五阻性元件的尖峰电压进行放电，二极管的导通方向与流经第五阻性元件的电流方向相反。In another embodiment of the present application, optionally, the second discharge element is a unidirectional conducting element. Specifically, as shown in FIG. 39, the second discharge element is a diode, and the diode is used to discharge the peak voltage of the fifth resistive element, and the conduction direction of the diode is opposite to the direction of current flowing through the fifth resistive element.

在该实施例中，通过反向并联的二极管，为第五阻性元件的尖峰电压提供一个放电回路。二极管的选择与第五阻性元件的电感量及阻值相关。In this embodiment, anti-parallel diodes provide a discharge circuit for the peak voltage of the fifth resistive element. The selection of the diode is related to the inductance and resistance of the fifth resistive element.

在本申请的另一实施例中，第二放电元件为单向导通元件与电阻的串联组合。其中，单向导通元件是具有单向导通特性的元件，如二极管。In another embodiment of the present application, the second discharge element is a series combination of a unidirectional conduction element and a resistor. Among them, a unidirectional conduction element is an element with unidirectional conduction characteristics, such as a diode.

在本申请的另一实施例中，如图40所示，可选地，第二放电元件包括：第三容性元件，用于对第五阻性元件的尖峰电压进行放电，第三容性元件与第五阻性元件并联。In another embodiment of the present application, as shown in FIG. 40, optionally, the second discharge element includes: a third capacitive element for discharging the peak voltage of the fifth resistive element, and the third capacitive element The element is connected in parallel with the fifth resistive element.

在该实施例中，第二放电元件包括第三容性元件，第三容性元件与第五阻性元件并联，作为第五阻性元件的尖峰电压的放电回路。第三容性元件的选择与第五阻性元件的电感量相关，具体地，第三容性元件的电容量与第五阻性元件的电感量正相关，第五阻性元件的电感量越小，第三容性元件的电容量也越小。In this embodiment, the second discharge element includes a third capacitive element, and the third capacitive element is connected in parallel with the fifth resistive element to serve as a discharge circuit for the peak voltage of the fifth resistive element. The selection of the third capacitive element is related to the inductance of the fifth resistive element. Specifically, the capacitance of the third capacitive element is positively related to the inductance of the fifth resistive element, and the greater the inductance of the fifth resistive element is. Smaller, the smaller the capacitance of the third capacitive element.

在本申请的另一实施例中，如图41所示，可选地，第二放电元件还包括：第六阻性元件，用于限制流经第三容性元件的电流，第六阻性元件与第三容性元件串联。In another embodiment of the present application, as shown in FIG. 41, optionally, the second discharge element further includes: a sixth resistive element for limiting the current flowing through the third capacitive element, and the sixth resistive element The element is connected in series with the third capacitive element.

在该实施例中，第二放电元件还包括第六阻性元件，第六阻性元件与第三容性元件串联，以限制流经第三容性元件的电流。可选地，第三容性元件为电容，第六阻性元件为电阻，即使用串联的RC谐振电路对第五阻性元件的尖峰电压进行释放。In this embodiment, the second discharge element further includes a sixth resistive element, and the sixth resistive element is connected in series with the third capacitive element to limit the current flowing through the third capacitive element. Optionally, the third capacitive element is a capacitor, and the sixth resistive element is a resistor, that is, a series-connected RC resonance circuit is used to release the spike voltage of the fifth resistive element.

在本申请的另一个实施例中，可选地，第五阻性元件包括：一个或者多个电阻，多个电阻之间串联连接。In another embodiment of the present application, optionally, the fifth resistive element includes: one or more resistors, and the multiple resistors are connected in series.

在本申请的另一个实施例中，如图40、如图42、图43和图44所示，可选地，驱动控制电路还包括：温敏电阻，用于限制阻性吸收电路上的电流，温敏电阻接入于高压母线上。In another embodiment of the present application, as shown in FIG. 40, FIG. 42, FIG. 43, and FIG. 44, optionally, the drive control circuit further includes: a temperature-sensitive resistor for limiting the current on the resistive absorption circuit , The temperature-sensitive resistor is connected to the high-voltage bus.

通过将温敏电阻接入于高压母线上，主要是在上电瞬间起作用，限制吸收电阻上的瞬时电路，充电完成后会被短路掉。当然，只要是阻值是正温度系数的元器件，都可以替代温敏电阻使用。By connecting the temperature-sensitive resistor to the high-voltage bus, it mainly works at the moment of power-on, limiting the instantaneous circuit on the absorption resistor, and it will be short-circuited after the charging is completed. Of course, as long as the resistance is a component with a positive temperature coefficient, it can be used instead of a temperature-sensitive resistor.

在本申请的另一个实施例中，如图40、如图42、图43和图44所示，可选地，驱动控制电路还包括：继电器，用于限制温敏电阻对高压母线上的浪涌信号的吸收过程，继电器与温敏电阻并联。In another embodiment of the present application, as shown in FIG. 40, FIG. 42, FIG. 43, and FIG. 44, optionally, the drive control circuit further includes a relay, which is used to limit the temperature-sensitive resistance to the wave on the high-voltage bus. In the process of absorbing the surge signal, the relay is connected in parallel with the temperature-sensitive resistor.

在该实施例中，驱动控制电路还包括继电器，继电器与温敏电阻并联，用于控制温敏电阻对阻性吸收电路上的电流的限制过程。In this embodiment, the drive control circuit further includes a relay, and the relay is connected in parallel with the temperature-sensitive resistor to control the limiting process of the current on the resistive absorption circuit by the temperature-sensitive resistor.

在本申请的另一个实施例中，如图46、图47和图48所示，可选地，驱动控制电路还包括多个温敏电阻，用于吸收电源输入端的浪涌信号，具体地，温敏电阻的数量为三个，即PTC ₁、PTC ₂、PTC ₃表示，三者分别设在交流三相三线的每一根线上。 In another embodiment of the present application, as shown in FIG. 46, FIG. 47 and FIG. 48, optionally, the drive control circuit further includes a plurality of temperature-sensitive resistors for absorbing the surge signal at the power input terminal, specifically, The number of temperature-sensitive resistors is three, namely PTC ₁ , PTC ₂ , and PTC ₃ , which are respectively set on each line of the AC three-phase three-wire.

可选地，驱动控制电路还包括多个继电器，继电器的数量与温敏电阻一一对应，具体地，继电器的数量为三个，三者分别与PTC ₁、PTC ₂、PTC ₃相并联，用于控制温敏电阻对浪涌信号的吸收过程。 Optionally, the drive control circuit further includes a plurality of relays, and the number of relays corresponds to the temperature-sensitive resistor one to one. Specifically, the number of relays is three, and the three are connected in parallel with PTC ₁ , PTC ₂ , and PTC _{3 respectively} . To control the absorbing process of the temperature-sensitive resistor to the surge signal.

此外，第四开关元件与阻性吸收电路的位置可以改变，此处考虑是使用IGBT(Insulated Gate Bipolar Transistor，绝缘栅双极型晶体管)所以位置固定，如果是使用继电器类第四开关元件，可以与第五阻性元件位置互换。In addition, the position of the fourth switching element and the resistive absorbing circuit can be changed. Here we consider the use of IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) so the position is fixed. If the fourth switching element of the relay type is used, it can be The position of the fifth resistive element is interchanged.

在本申请的一个实施例中，可选地，驱动控制电路还包括：控制电路(图中未示出)，与第四开关元件相连接，控制电路用于收集驱动控制电路的供电信号，并根据供电信号控制第四开关元件导通或截止；其中，供电信号为母线信号和交流信号。In an embodiment of the present application, optionally, the drive control circuit further includes: a control circuit (not shown in the figure), connected to the fourth switch element, the control circuit is used to collect the power supply signal of the drive control circuit, and The fourth switching element is controlled to be turned on or off according to the power supply signal; wherein the power supply signal is a bus signal and an AC signal.

在该实施例中，通过控制电路收集驱动控制电路的供电信号，根据供电信号控制第四开关元件导通或者截止，进而控制阻性元件对浪涌信号的吸收过程。其中，供电信号为母线信号和/或交流信号。具体地，交流信号通过整流桥处理为母线信号，母线信号和交流信号均可以作为控制第四开关元件导通或者截止的判定条件。In this embodiment, the power supply signal of the driving control circuit is collected by the control circuit, and the fourth switch element is controlled to be turned on or off according to the power supply signal, thereby controlling the resistive element's absorption process of the surge signal. Among them, the power supply signal is a bus signal and/or an AC signal. Specifically, the AC signal is processed into a bus signal by the rectifier bridge, and both the bus signal and the AC signal can be used as a determination condition for controlling the turning on or off of the fourth switching element.

其中，母线信号可以通过收集整流桥后电抗器前的电压和/或电抗器后逆变桥前的电压获得；交流信号为交流输入电压峰值和/或整流桥前的电压。The bus signal can be obtained by collecting the voltage before the reactor after the rectifier bridge and/or the voltage before the inverter bridge after the reactor; the AC signal is the peak value of the AC input voltage and/or the voltage before the rectifier bridge.

其中，控制电路与第四开关元件之间串联有功放电路(图中未示出)，通过功放电路将控制电路输出的控制信号放大，以使控制电路能够驱动第四开关元件。A power amplifier circuit (not shown in the figure) is connected in series between the control circuit and the fourth switch element, and the control signal output by the control circuit is amplified by the power amplifier circuit, so that the control circuit can drive the fourth switch element.

在上述任一实施例中，可选地，母线电容为薄膜电容。In any of the foregoing embodiments, optionally, the bus capacitor is a film capacitor.

为了更好的说明本申请，如图38、图39、图40、图41、图42、图43、图44、图45、图46、图47和图48所示，以6KW样机实际运行设置参数：In order to better explain this application, as shown in Figure 38, Figure 39, Figure 40, Figure 41, Figure 42, Figure 43, Figure 44, Figure 45, Figure 46, Figure 47 and Figure 48, the actual operating settings of the 6KW prototype parameter:

电抗器Lac指实际交流侧电感模型与输入电源线电感，其包含电感量及电阻量，现有机型使用交流侧电感25mH，500毫欧，输入电源线的电感小于等于10mH(数值放大)，电阻不小于0.5欧(实际使用导线电阻大约1.2欧)；Reactor Lac refers to the actual AC side inductance model and the input power line inductance, which includes inductance and resistance. The existing models use AC side inductance 25mH, 500 milliohms, and the input power line inductance is less than or equal to 10mH (numerical amplification). The resistance is not less than 0.5 ohms (the actual wire resistance is about 1.2 ohms);

电抗器指实际直流侧电感模型，其包含电感量及电阻量，4.5mH，120毫欧；Reactor refers to the actual DC side inductance model, which includes inductance and resistance, 4.5mH, 120 milliohms;

R ₄为***阻尼电阻(不大于200欧，在16KW样机上使用68欧，实际也可以不使用)，阻尼电阻R4在电抗器选择4.5mH时未增加，在6KW样机上可以无电抗器，也可以无R4。 R ₄ is the damping resistance of the system (not more than 200 ohms, 68 ohms are used on the 16KW prototype, but can not be used in practice). The damping resistance R4 is not increased when the reactor is selected at 4.5mH, and there is no reactor on the 6KW prototype. Can be without R4.

需要说明的是：Lac和电抗器是为了EMC谐波要求而存在，如果是有谐波要求区域，样机上可能存在Lac也可能存在电抗器，甚至可能Lac和电抗器共存。而对于无谐波要求区域，Lac和电抗器都是不存在的，但为了高频谐波问题(如果忽略该问题，可以不使用电抗器电感)，会在电路拓扑的电抗器位置处使用一个较小的电抗器Ldc，出于成本原因，优选小电感，比如小于2mH，此较小的Ldc上并联一个小的阻尼电阻是为了提高***稳定性。It should be noted that Lac and reactors exist for EMC harmonic requirements. If it is a harmonic requirement area, there may be Lac or reactors on the prototype, and even Lac and reactors may coexist. For areas without harmonic requirements, Lac and reactors do not exist, but for high-frequency harmonic problems (if you ignore this problem, you can not use reactor inductance), a reactor will be used at the location of the circuit topology. The smaller reactor Ldc, for cost reasons, preferably has a small inductance, such as less than 2mH. This smaller Ldc is connected in parallel with a small damping resistor to improve system stability.

运行说明：Operation instructions:

样机上电时，输入电压经整流桥整流后同时给母线电容充电，此时如果输入电压在正常设定范围内(150V至264V)，未超过294V时(设定硬件保护电压阈值为800V，软件保护阈值为720V，对应的交流输入有效值为720÷1.414÷1.732＝294V，样机正常工作，第一阻性吸收元件的第四开关元件不导通。When the prototype is powered on, the input voltage is rectified by the rectifier bridge and simultaneously charges the bus capacitor. At this time, if the input voltage is within the normal setting range (150V to 264V) and does not exceed 294V (set the hardware protection voltage threshold to 800V, the software The protection threshold is 720V, and the corresponding effective AC input value is 720÷1.414÷1.732=294V. The prototype works normally, and the fourth switching element of the first resistive absorption element is not conducting.

样机正常运行时，母线电容上电压以交流输入电源频率6倍的频率波动，正常运行时母线电压最大值为264×1.414×1.732＝646V，远小于设定的保护阈值，因此第四开关元件不会起作用。When the prototype is running normally, the voltage on the bus capacitor fluctuates at a frequency that is 6 times the AC input power frequency. The maximum bus voltage during normal operation is 264×1.414×1.732=646V, which is much smaller than the set protection threshold. Therefore, the fourth switching element does not Will work.

浪涌能量主要来源于电源输入、样机故障停机时电机绕组、交直流侧电感续流以及电机动能；当浪涌来临时，由于母线电容(薄膜电容或者小容量电解电容)吸收浪涌能力有限，母线电压会快速上升；Surge energy mainly comes from power input, motor windings, AC and DC side inductance freewheeling and motor kinetic energy when the prototype is shut down. When a surge comes, the bus capacitor (film capacitor or small-capacity electrolytic capacitor) has a limited ability to absorb the surge. The bus voltage will rise rapidly;

当直流母线电压高于设定阈值电压V2(此处设置为720V，实际可以调整)时，为保护元器件不受高压损坏(主要为智能功率模块及电容等元器件)，第四开关元件以占空比形式或者脉冲形式开通。同时，电机快速降频，也可以直接停机，电机使用零矢量停机功能(如果电机本身电感及反电势系数较小，可以直接停机)。When the DC bus voltage is higher than the set threshold voltage V2 (here set to 720V, it can actually be adjusted), in order to protect the components from high voltage damage (mainly smart power modules and capacitors and other components), the fourth switching element is Turn on in duty cycle or pulse form. At the same time, the motor can quickly reduce the frequency, and it can also be stopped directly. The motor uses the zero vector stop function (if the motor itself has a small inductance and back EMF coefficient, it can be stopped directly).

当直流母线电压低于设定阈值电压V1时(此处设置为700V，实际可以调整)时，第四开关元件关闭，结束本阶段的浪涌吸收过程。When the DC bus voltage is lower than the set threshold voltage V1 (here set to 700V, which can actually be adjusted), the fourth switching element is turned off, ending the surge absorption process of this stage.

在本申请第七方面的实施例中，提供了一种控制器，包括：如上述任一实施例中所述的驱动控制电路，因此该控制器具有该驱动控制电路的全部技术效果，不再赘述。In an embodiment of the seventh aspect of the present application, a controller is provided, including: the drive control circuit as described in any of the above embodiments. Therefore, the controller has all the technical effects of the drive control circuit, and no longer Repeat.

在本申请第八方面的实施例中，提供了一种空调器，包括：电机；如上述实施例中任一项的驱动控制电路；其中，电机的信号输入端连接至驱动控制电路，驱动控制电路输出的驱动信号用于驱动电机运行，因此该空调器具有上述任一实施例中驱动控制电路或该控制器全部的技术效果，不再赘述。In an embodiment of the eighth aspect of the present application, an air conditioner is provided, including: a motor; a drive control circuit as in any one of the above embodiments; wherein the signal input end of the motor is connected to the drive control circuit, and the drive control The drive signal output by the circuit is used to drive the motor to run, so the air conditioner has all the technical effects of the drive control circuit or the controller in any of the above embodiments, and will not be repeated.

本申请的描述中，术语“多个”则指两个或两个以上，除非另有明确的限定，术语“上”、“下”等指示的方位或位置关系为基于附图所述的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制；术语“连接”、“安装”、“固定”等均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。In the description of this application, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms “upper” and “lower” are based on the orientation described in the drawings. Or the positional relationship is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application; "Connected", "installed", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or through an intermediate medium. Indirectly connected. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

在本申请的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本申请的至少一个实施例或示例中。在本申请中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this application, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in this application In at least one embodiment or example. In this application, the schematic representations of the aforementioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The above are only the preferred embodiments of the present application, and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of this application shall be included in the scope of protection of this application.

Claims

一种驱动控制电路，所述驱动控制电路包括：逆变桥，用于输出驱动信号，所述逆变桥接入于高压母线和低压母线之间；其中，所述驱动控制电路还包括：A drive control circuit, the drive control circuit includes: an inverter bridge for outputting a drive signal, the inverter bridge is connected between a high voltage bus and a low voltage bus; wherein, the drive control circuit further includes:

电抗器，用于吸收所述驱动控制电路驱动负载运行过程中产生的浪涌信号，所述电抗器接入于电网和所述负载之间；The reactor is used to absorb the surge signal generated during the operation of the drive control circuit driving the load, and the reactor is connected between the power grid and the load;

母线电容，用于滤除母线线路上的浪涌信号，所述母线电容接入于所述逆变桥输入侧的所述母线线路中。The bus capacitor is used to filter out surge signals on the bus line, and the bus capacitor is connected to the bus line on the input side of the inverter bridge.
根据权利要求1所述的驱动控制电路，其中，还包括：The drive control circuit according to claim 1, further comprising:

第一吸收电路，用于吸收所述母线线路上的浪涌信号，所述第一吸收电路接入于所述母线电容与所述逆变桥之间。The first absorbing circuit is used to absorb the surge signal on the bus line, and the first absorbing circuit is connected between the bus capacitor and the inverter bridge.
根据权利要求2所述的驱动控制电路，其中，所述第一吸收电路包括：The drive control circuit according to claim 2, wherein the first absorption circuit comprises:

阻性吸收元件，用于吸收所述浪涌信号，所述阻性吸收元件与所述母线电容并联；A resistive absorption element for absorbing the surge signal, and the resistive absorption element is connected in parallel with the bus capacitor;

第一开关元件，用于调控所述阻性吸收元件吸收所述浪涌信号的过程，所述第一开关元件与所述阻性吸收元件相串联，所述第一开关元件导通时，所述阻性吸收元件吸收所述浪涌信号，所述第一开关元件截止时，所述阻性吸收元件停止吸收所述浪涌信号。The first switching element is used to regulate the process of absorbing the surge signal by the resistive absorption element. The first switching element is connected in series with the resistive absorption element. When the first switching element is turned on, the The resistive absorption element absorbs the surge signal, and when the first switching element is turned off, the resistive absorption element stops absorbing the surge signal.
根据权利要求3所述的驱动控制电路，其中，所述阻性吸收元件包括：The drive control circuit according to claim 3, wherein the resistive absorption element comprises:

第一电阻，用于吸收所述浪涌信号，所述第一电阻与所述第一开关元件串联连接，所述第一电阻的阻值与预设的母线电压保护阈值相对应；和/或A first resistor for absorbing the surge signal, the first resistor is connected in series with the first switching element, and the resistance of the first resistor corresponds to a preset bus voltage protection threshold; and/or

所述第一电阻的阻值与预设的所述第一开关元件的过电流保护阈值相对应。The resistance value of the first resistor corresponds to a preset overcurrent protection threshold of the first switching element.
根据权利要求4所述的驱动控制电路，其中，所述阻性吸收元件包括：The drive control circuit according to claim 4, wherein the resistive absorption element comprises:

第一单向导通元件，与所述第一电阻相并联，所述第一单向导通元件的导通方向与流经所述第一电阻的电流方向相反。A first unidirectional conducting element is connected in parallel with the first resistor, and the conduction direction of the first unidirectional conducting element is opposite to the direction of current flowing through the first resistor.
根据权利要求1所述的驱动控制电路，其中，还包括：The drive control circuit according to claim 1, further comprising:

第二吸收电路，用于吸收所述高压母线和所述低压母线上的浪涌信号，The second absorption circuit is used to absorb the surge signals on the high-voltage bus and the low-voltage bus,

所述第二吸收电路包括：The second absorption circuit includes:

容性吸收元件，用于吸收所述浪涌信号，所述容性吸收元件与所述母线电容并联；A capacitive absorption element for absorbing the surge signal, and the capacitive absorption element is connected in parallel with the bus capacitor;

第二单向导通元件，用于调控所述容性吸收元件对所述浪涌信号的吸收过程，所述第二单向导通元件与所述容性吸收元件相串联。The second uniconducting element is used to regulate the absorption process of the surge signal by the capacitive absorption element, and the second uniconducting element is connected in series with the capacitive absorption element.
根据权利要求6所述的驱动控制电路，其中，The drive control circuit according to claim 6, wherein:

所述容性吸收元件包括：The capacitive absorption element includes:

至少一个电容，或多个串联和/或并联的所述电容，At least one capacitor, or a plurality of said capacitors connected in series and/or in parallel,

所述第二吸收电路还包括：The second absorption circuit further includes:

第二电阻，用于吸收所述电容中的浪涌信号，所述第二电阻与所述电容并联。The second resistor is used to absorb the surge signal in the capacitor, and the second resistor is connected in parallel with the capacitor.
根据权利要求7所述的驱动控制电路，其中，所述第二吸收电路还包括：The driving control circuit according to claim 7, wherein the second absorption circuit further comprises:

限流电阻，用于限制流经所述容性吸收元件的电流，所述限流电阻与所述容性吸收元件串联。The current limiting resistor is used to limit the current flowing through the capacitive absorption element, and the current limiting resistor is connected in series with the capacitive absorption element.
根据权利要求1至8中任一项所述的驱动控制电路，其中，还包括：The drive control circuit according to any one of claims 1 to 8, further comprising:

第四电阻，用于吸收所述电抗器上产生的振荡信号，所述第四电阻与所述电抗器并联。The fourth resistor is used to absorb the oscillating signal generated on the reactor, and the fourth resistor is connected in parallel with the reactor.
根据权利要求3所述的驱动控制电路，其中，还包括：The drive control circuit according to claim 3, further comprising:

采样控制电路，与所述第一开关元件相连接，所述采样控制电路用于采集所述驱动控制电路的供电信号，根据所述供电信号控制所述第一开关元件导通或截止；A sampling control circuit connected to the first switching element, the sampling control circuit is used to collect the power supply signal of the drive control circuit, and control the first switching element to be turned on or off according to the power supply signal;

其中，所述供电信号包括所述驱动控制电路交流测的供电信号和所述母线线路的供电信号。Wherein, the power supply signal includes the power supply signal measured by the drive control circuit and the power supply signal of the bus line.
一种空调器，其中，所述空调器包括：An air conditioner, wherein the air conditioner includes:

电机；以及Motor; and

如权利要求1至10中任一项所述的驱动控制电路，所述电机的信号输入端连接至所述驱动控制电路，所述驱动控制电路输出的驱动信号用于驱动所述电机运行。The drive control circuit according to any one of claims 1 to 10, wherein the signal input terminal of the motor is connected to the drive control circuit, and the drive signal output by the drive control circuit is used to drive the motor to operate.
一种驱动控制电路，包括：逆变桥，所述逆变桥用于驱动控制负载运行，所述逆变桥接入于高压母线和低压母线之间，其中，包括：A drive control circuit includes: an inverter bridge, the inverter bridge is used to drive and control load operation, the inverter bridge is connected between a high-voltage bus and a low-voltage bus, and includes:

电抗器，用于吸收所述驱动控制电路驱动所述负载运行过程中产生的浪涌信号，所述电抗器接入于电网和所述负载之间；The reactor is used to absorb the surge signal generated during the operation of the drive control circuit to drive the load, and the reactor is connected between the power grid and the load;

母线电容，所述母线电容用于提供所述负载上电所需的启动电压，所述母线电容还用于吸收所述浪涌信号，所述母线电容接入于逆变桥输入侧的母线线路中；Bus capacitor, the bus capacitor is used to provide the starting voltage required by the load, the bus capacitor is also used to absorb the surge signal, the bus capacitor is connected to the bus line on the input side of the inverter bridge in;

第一阻性元件和第二开关元件，所述第二开关元件被配置为控制所述第一阻性元件吸收所述浪涌信号，所述第一阻性元件和所述第二开关元件串联后串接在所述高压母线和所述低压母线之间；A first resistive element and a second switching element, the second switching element is configured to control the first resistive element to absorb the surge signal, and the first resistive element and the second switching element are connected in series And then serially connected between the high-voltage bus and the low-voltage bus;

单向导通元件或第三开关元件；Unidirectional conducting element or third switching element;

第一容性元件，所述单向导通元件或所述第三开关元件被配置为限制所述第一容性元件吸收所述高压母线上的浪涌信号，所述单向导通元件或所述第三开关元件与所述第一容性元件串联后串接在所述高压母线和所述低压母线之间；The first capacitive element, the unidirectional conducting element or the third switching element is configured to restrict the first capacitive element from absorbing the surge signal on the high-voltage bus, the unidirectional conducting element or the The third switching element is connected in series with the first capacitive element and then connected in series between the high-voltage bus and the low-voltage bus;

控制芯片，所述控制芯片与所述第二开关元件相连接，其中，控制芯片根据所述母线信号与电压阈值的大小关系控制所述第一阻性元件工作。A control chip, the control chip is connected to the second switching element, wherein the control chip controls the operation of the first resistive element according to the magnitude relationship between the bus signal and the voltage threshold.
根据权利要求12所述的驱动控制电路，其中，还包括：The drive control circuit according to claim 12, further comprising:

第二阻性元件，所述第二阻性元件用于释放所述第一容性元件中的浪涌信号，所述第二阻性元件与所述第一容性元件并联。A second resistive element, the second resistive element is used to release the surge signal in the first capacitive element, and the second resistive element is connected in parallel with the first capacitive element.
根据权利要求13所述的驱动控制电路，其中，还包括：The drive control circuit according to claim 13, further comprising:

第二容性元件，用于吸收所述高压母线上的浪涌信号，所述第二容性元件与所述第一容性元件串联。The second capacitive element is used for absorbing the surge signal on the high-voltage bus, and the second capacitive element is connected in series with the first capacitive element.
根据权利要求14所述的驱动控制电路，其中，还包括：The drive control circuit according to claim 14, further comprising:

第三阻性元件，所述第三阻性元件用于释放所述第二容性元件中的浪涌信号，所述第三阻性元件与所述第二容性元件并联。The third resistive element, the third resistive element is used to release the surge signal in the second capacitive element, and the third resistive element is connected in parallel with the second capacitive element.
根据权利要求15所述的驱动控制电路，其中，还包括：The drive control circuit according to claim 15, further comprising:

第四阻性元件，用于限制流向所述第一容性元件和/或所述第二容性元件的电流，所述第四阻性元件、所述第二开关元件以及所述第一容性元件相串联；或所述第四阻性元件、所述第二开关元件、第一容性元件以及所述第二容性元件相串联。The fourth resistive element is used to limit the current flowing to the first capacitive element and/or the second capacitive element. The fourth resistive element, the second switching element and the first capacitor Or the fourth resistive element, the second switching element, the first capacitive element and the second capacitive element are connected in series.
根据权利要求12所述的驱动控制电路，其中，还包括：The drive control circuit according to claim 12, further comprising:

第一放电元件，用于释放所述第一阻性元件中的尖峰电压信号，所述第一放电元件与所述第一阻性元件并联。The first discharge element is used for releasing the spike voltage signal in the first resistive element, and the first discharge element is connected in parallel with the first resistive element.
根据权利要求12所述的驱动控制电路，其中，所述第三开关元件与控制芯片相连接，所述控制芯片用于收集母线信号，并根据所述母线信号控制所述第三开关元件导通或截止。The drive control circuit according to claim 12, wherein the third switching element is connected to a control chip, and the control chip is used to collect a bus signal and control the third switching element to be turned on according to the bus signal Or deadline.
根据权利要求18所述的驱动控制电路，其中，所述电压阈值包括第一电压阈值和第二电压阈值，The drive control circuit according to claim 18, wherein the voltage threshold includes a first voltage threshold and a second voltage threshold,

所述控制芯片具体用于：所述母线信号大于或等于第一电压阈值小于所述第二电压阈值，控制所述第二开关元件截止，所述第三开关元件导通；The control chip is specifically configured to: the bus signal is greater than or equal to a first voltage threshold and less than the second voltage threshold, to control the second switching element to turn off and the third switching element to turn on;

所述母线信号大于或等于所述第二电压阈值，控制所述第二开关元件和所述第三开关元件导通；The bus signal is greater than or equal to the second voltage threshold, controlling the second switching element and the third switching element to conduct;

所述母线信号小于第一预设电压，控制所述第二开关元件和所述第三开关元件截止。The bus signal is less than the first preset voltage, and the second switching element and the third switching element are controlled to be turned off.
根据权利要求19所述的驱动控制电路，其中，所述驱动控制电路还包括：The drive control circuit according to claim 19, wherein the drive control circuit further comprises:

整流桥，所述整流桥对交流信号进行整流后输出为所述母线信号，所述母线信号经所述高压母线和所述低压母线输出至所述母线电容、所述逆变桥和所述负载，A rectifier bridge, the rectifier bridge rectifies an AC signal and outputs the bus signal, and the bus signal is output to the bus capacitor, the inverter bridge and the load via the high voltage bus and the low voltage bus ,

其中，所述控制芯片根据所述交流信号控制所述第二开关元件的导通状态和第三开关元件的导通状态。Wherein, the control chip controls the conduction state of the second switching element and the conduction state of the third switching element according to the AC signal.
一种控制器，其中，包括：A controller, which includes:

如权利要求12至20中任一项所述的驱动控制电路。The drive control circuit according to any one of claims 12 to 20.
一种空调器，其中，包括：An air conditioner, which includes:

电机；Motor

如权利要求12至20中任一项所述的驱动控制电路，所述电机的信号输入端连接至所述驱动控制电路，所述驱动控制电路输出的驱动信号用于驱动所述电机运行。The drive control circuit according to any one of claims 12 to 20, wherein the signal input terminal of the motor is connected to the drive control circuit, and the drive signal output by the drive control circuit is used to drive the motor to run.
一种驱动控制电路，包括：逆变桥，用于驱动控制负载运行，所述逆变桥接入于高压母线和低压母线之间；其中，所述驱动控制电路还包括：电抗器，用于吸收所述驱动控制电路驱动所述负载运行过程中产生的浪涌信号，所述电抗器接入于电网和所述负载之间；母线电容，用于提供所述负载上电所需的启动电压，所述母线电容还用于吸收所述浪涌信号，所述母线电容接入于所述逆变桥输入侧的母线线路中；以及所述驱动控制电路还包括：A drive control circuit includes: an inverter bridge for driving and controlling the operation of a load, the inverter bridge is connected between a high-voltage bus and a low-voltage bus; wherein, the drive control circuit also includes: a reactor for Absorb the surge signal generated during the operation of the drive control circuit to drive the load, the reactor is connected between the grid and the load; the bus capacitor is used to provide the starting voltage required by the load to power on The bus capacitor is also used to absorb the surge signal, and the bus capacitor is connected to the bus line on the input side of the inverter bridge; and the drive control circuit further includes:

阻性吸收电路，用于吸收所述母线线路上的浪涌信号，所述阻性吸收电路与所述母线电容并联；A resistive absorption circuit for absorbing the surge signal on the bus line, and the resistive absorption circuit is connected in parallel with the bus capacitor;

第四开关元件，用于调控所述阻性吸收电路吸收所述浪涌信号的过程，所述第四开关元件与所述阻性吸收电路串联，所述第四开关元件导通时，所述阻性吸收电路吸收所述浪涌信号，所述第四开关元件截止时，所述阻性吸收电路停止吸收所述浪涌信号。The fourth switching element is used to control the process of the resistive absorption circuit absorbing the surge signal. The fourth switching element is connected in series with the resistive absorption circuit. When the fourth switching element is turned on, the The resistive absorption circuit absorbs the surge signal, and when the fourth switching element is turned off, the resistive absorption circuit stops absorbing the surge signal.
根据权利要求23所述的驱动控制电路，其中，所述阻性吸收电路包括：The drive control circuit according to claim 23, wherein the resistive absorption circuit comprises:

第五阻性元件，用于对所述浪涌信号进行吸收，所述第五阻性元件接入于所述高压母线和所述低压母线之间。The fifth resistive element is used to absorb the surge signal, and the fifth resistive element is connected between the high-voltage bus and the low-voltage bus.
根据权利要求24所述的驱动控制电路，其中，The drive control circuit according to claim 24, wherein:

所述第四开关元件为功率开关或者继电器；The fourth switching element is a power switch or a relay;

所述功率开关或者所述继电器，用于调控所述阻性吸收电路吸收所述浪涌信号的过程。The power switch or the relay is used to regulate the process of the resistive absorption circuit absorbing the surge signal.
根据权利要求24所述的驱动控制电路，其中，所述阻性吸收电路还包括：The drive control circuit according to claim 24, wherein the resistive absorption circuit further comprises:

第二放电元件，用于对所述第五阻性元件的尖峰电压进行放电，所述第二放电元件与所述第五阻性元件并联。The second discharge element is used for discharging the peak voltage of the fifth resistive element, and the second discharge element is connected in parallel with the fifth resistive element.
根据权利要求26所述的驱动控制电路，其中，The drive control circuit according to claim 26, wherein:

所述第二放电元件为单向导通元件，或所述第二放电元件包括串联的单向导通元件和电阻；The second discharge element is a unidirectional conducting element, or the second discharging element includes a unidirectional conducting element and a resistor connected in series;

所述单向导通元件的导通方向与流经所述第五阻性元件的电流方向相反。The conduction direction of the unidirectional conducting element is opposite to the direction of the current flowing through the fifth resistive element.
根据权利要求26所述的驱动控制电路，其中，所述第二放电元件包括：The drive control circuit according to claim 26, wherein the second discharge element comprises:

第三容性元件，用于对所述尖峰电压进行放电，所述第三容性元件与所述第五阻性元件并联。The third capacitive element is used for discharging the spike voltage, and the third capacitive element is connected in parallel with the fifth resistive element.
根据权利要求28所述的驱动控制电路，其中，所述第二放电元件还包括：The drive control circuit according to claim 28, wherein the second discharge element further comprises:

第六阻性元件，用于限制流经所述第三容性元件的电流，所述第六阻性元件与所述第三容性元件串联。The sixth resistive element is used to limit the current flowing through the third capacitive element, and the sixth resistive element is connected in series with the third capacitive element.
根据权利要求24至29中任一项所述的驱动控制电路，其中，所述第五阻性元件包括：The drive control circuit according to any one of claims 24 to 29, wherein the fifth resistive element comprises:

一个或者多个电阻，所述多个电阻之间串联连接。One or more resistors are connected in series.
一种控制器，其中，包括：A controller, which includes:

如权利要求23至30中任一项所述的驱动控制电路。The drive control circuit according to any one of claims 23 to 30.
一种空调器，其中，包括：An air conditioner, which includes:

电机；以及Motor; and

如权利要求23至30中任一项所述的驱动控制电路；The drive control circuit according to any one of claims 23 to 30;

其中，所述电机的信号输入端连接至所述驱动控制电路，所述驱动控制电路输出的驱动信号用于驱动所述电机运行。Wherein, the signal input terminal of the motor is connected to the drive control circuit, and the drive signal output by the drive control circuit is used to drive the motor to run.