WO2015161530A1 - Fault state feedback method for bldc motor and application of bldc motor and air-conditioning system - Google Patents
Fault state feedback method for bldc motor and application of bldc motor and air-conditioning system Download PDFInfo
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- WO2015161530A1 WO2015161530A1 PCT/CN2014/077012 CN2014077012W WO2015161530A1 WO 2015161530 A1 WO2015161530 A1 WO 2015161530A1 CN 2014077012 W CN2014077012 W CN 2014077012W WO 2015161530 A1 WO2015161530 A1 WO 2015161530A1
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- 230000010354 integration Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
Definitions
- the invention relates to a BLDC motor fault state feedback method and application BLDC motor and air conditioning system. Background technique:
- the BLDC motor for the coil fan ie, the brushless DC motor
- the brushless DC motor has five connection ports, one ground connection GND, one speed input port VSP, one DC bus voltage input port VDC, A low-voltage DC power input port VCC and a feedback port FG for the motor speed signal, and the interface of most air conditioner manufacturers is designed as such.
- this straight BLDC motor does not set the state feedback of the motor, so the main control board of the air conditioner cannot read the status information of the DC brushless motor, such as over temperature, stall, over current, Hall failure, clock failure, over voltage, etc. Motor status information. As the customer demands, the motor manufacturer is required to feed back these motor status information on the DC brushless motor.
- the common solution now is to add a signal line to the DC brushless motor to feed back the status information of these motors, but this will change the clamp mold of the existing motor, the interface of the air conditioner motherboard, the motor interface, etc., which is very difficult to operate, and high cost.
- the object of the present invention is to provide a BLDC motor fault state feedback method and a BLDC motor and an air conditioning system.
- the fault state feedback method is simple, easy to operate, and can feedback different fault signals of the motor, and has high reliability;
- the BLDC motor has a simple structure. Without changing the structure of the existing motor, the fault signal of the motor can be fed back, the operation is simple, the cost is low, and the reliability is high;
- the air conditioning system has the advantages of simple structure, convenient operation and high reliability.
- the BLDC motor has a feedback port FG for outputting a motor speed signal to the outside, and the FG output is a P-view signal.
- the port FG outputs a motor speed signal to the outside
- the frequency is defined in the first a frequency segment, in the range of the first frequency segment, the magnitude of the rotational speed is represented by the P signal frequency; when the motor fault signal is output outward, a second frequency signal different from the first frequency segment is used.
- the different duty ratios of the PWM signals of the second frequency are used to represent different faults.
- the duty ratio of all the P medical signals of the first frequency segment described above is 50%.
- the first frequency range described above ranges from 10 Hz to 300 Hz, and the second frequency signal is at 1 kHz.
- a BLDC motor, the stator assembly, the rotor assembly, the control circuit board, the stator assembly and the rotor assembly are magnetically coupled, the control circuit board is integrated with the microprocessor MCU, the inverter and the interface unit, and the microprocessor
- the MCU output signal controls the inverter, and the inverter is connected to control each phase coil winding of the stator assembly.
- the interface unit includes a frequency generating circuit, and an I/O port of the microprocessor MCU outputs different frequencies through the frequency generating circuit. And the P-view signal of the duty cycle and form the port FG.
- the frequency generating circuit described above is a triode switching circuit.
- the transistor switching circuit described above comprises a transistor Q1, a sixth resistor R1 06, a fifth resistor R1 05, a fourth resistor R1 04 and a capacitor C1 07, and the port FG is connected in series with a fourth resistor R1 04, a fifth resistor R1 05 and a power source VCC2.
- the node between the port FG and the fourth resistor R1 04 is connected to the capacitor C1 07- terminal, the other end of the capacitor C1 07 is grounded, and the node between the fourth resistor R1 04 and the fifth resistor R1 05 is connected to the collector of the transistor Q1, the triode The emitter of the Q1 is connected to the ground, and the base of the transistor Q1 is connected to an I/O port of the microprocessor MCU through the sixth resistor R1 06.
- the frequency is defined in the first frequency segment, and the magnitude of the speed is represented by the P signal frequency in the range of the first frequency segment;
- a second frequency signal different from the first frequency segment is used.
- the different duty ratios of the PWM signals of the second frequency are used to represent different faults, and the duty ratios of all the P signals of the first frequency section are 50%. .
- the frequency of the second frequency signal described above is 1 kHz, 10% K represents overvoltage, 20% ⁇ represents overcurrent, 30% ⁇ represents overtemperature, 40% ⁇ represents Hall failure, and 50% ⁇ represents integrated power.
- the module is faulty.
- the interface unit described above further includes a ground connection GND, a speed input port VSP, a DC bus voltage input port VDC, and a low voltage DC power input port VCC.
- An air conditioning system includes an air conditioning system controller and a BLDC motor that drives the fan. The air conditioning system controller and the BLDC motor have five connection ports, one ground connection GND, one speed input port VSP, and one DC bus voltage input port.
- VDC voltage-to-voltage DC power input port VCC and a feedback port FG of the motor speed signal
- the frequency is defined in the first frequency segment, in the first frequency segment Within the range of the P-signal signal frequency, the magnitude of the rotational speed is used; when the motor fault signal is outputted outward, a second frequency signal different from the first frequency segment is used.
- the duty ratio of all PWM signals of the first frequency segment described above is 50%.
- the first frequency range described above ranges from 10 Hz to 300 Hz, and the second frequency signal is at 1 kHz.
- the invention has the following effects: 1) When the BLDC motor outputs the motor speed signal outward, the frequency is defined in the first frequency segment, and the P signal frequency is used in the range of the first frequency segment. The size represents the magnitude of the rotational speed; when the motor fault signal is output outward, the second frequency signal different from the first frequency segment is used, and the motor speed signal or the motor fault signal can be output on the port FG through the shared port FG, without The utility model has the advantages of simple method, convenient operation, feedback of different fault signals of the motor, high reliability and low cost; 2) BLDC motor interface unit includes frequency generating circuit An I/O port of the microprocessor MCU outputs different frequency segment signals through the frequency generating circuit and forms a port FG.
- the motor speed signal or the motor fault signal can be output on the port FG without changing.
- different fault signals of the motor can be fed back, the operation is simple, and the cost is low.
- the duty ratio of all P-view signals in the first frequency segment is 50%, the first frequency range is from 1 0HZ to 300HZ, and the second frequency signal is at 1KHZ, the configuration is simple and reasonable;
- the BLDC motor outputs various fault signals to the air conditioner system controller, the different duty ratios of the P signals of the second frequency are used to represent different faults, which is simple and convenient to implement.
- FIG. 1 is a schematic structural view of a brushless DC motor of the present invention
- Figure 2 is a circuit schematic diagram of the present invention
- FIG. 3 is a specific circuit diagram of a frequency generating circuit of the present invention.
- Figure 4 is a specific circuit diagram of the voltage dividing circuit of the present invention.
- FIG. 5 is a schematic diagram of feedback of a speed signal by the port FG of the present invention.
- FIG. 6 is a schematic diagram of another speed signal fed back by the port FG of the present invention.
- FIG. 7 is a schematic diagram of feedback of a fault signal by the port FG of the present invention.
- FIG. 8 is a schematic diagram of another fault signal fed back by the port FG of the present invention.
- Figure 9 is a structural schematic diagram of the air conditioning system.
- Embodiment 1 As shown in FIG. 1 and FIG. 2, the present invention is a BLDC motor, and the DC brushless motor includes a stator assembly 1, a rotor assembly 2, a control circuit board 3, a stator assembly 1 and a rotor assembly 2 Coupling, the control circuit board 3 is integrated with a microprocessor MCU, an inverter and an interface unit, the microprocessor MCU output signal controls the inverter, and the inverter is connected to control each phase coil winding of the stator assembly 1, the interface unit Including the frequency generating circuit, an I/O port of the microprocessor MCU outputs different frequency segment signals through the frequency generating circuit and forms a port FG.
- the inverter may be an integrated power module IPM, which contains multiple IGBT components, Hall The component HALL detects that the rotor position signal is sent to the microprocessor MCU, and the microprocessor MCU output signal controls the inverter.
- the frequency generating circuit is a triode switching circuit.
- the triode switch circuit includes a triode Q1, a sixth resistor R106, a fifth resistor R105, a fourth resistor R104, and a capacitor C107.
- the port FG is connected in series with the fourth resistor R104, the fifth resistor R1 05, and the power source VCC2 +15V, and the port FG and the fourth
- the node between the resistor R104 is connected to the capacitor C107-terminal, the other end of the capacitor C107 is grounded, the node between the fourth resistor R104 and the fifth resistor R105 is connected to the collector of the transistor Q1, the emitter of the transistor Q1 is connected to the ground, and the base of the transistor Q1 is passed.
- the sixth resistor R106 is connected to an I/O port of the ⁇ processor MCU.
- the BLDC motor has a feedback port FG for outputting the motor speed signal to the outside, and the FG outputs a PWM signal.
- the frequency is defined in the first frequency segment, within the range of the first frequency segment,
- the P-view signal frequency represents the magnitude of the rotational speed; when the motor fault signal is output outward, the second frequency signal different from the first frequency segment is used, and when the BLDC motor has multiple fault signals, the second frequency is used.
- the different duty cycles of the P medical signal represent different faults.
- the duty ratio of all PWM signals in the first frequency segment is 50%, the first frequency range is in the range of 10HZ to 300HZ, and the second frequency signal is in the 1KHZ frequency. .
- the speed signal since f2 > fl, indicates that the second speed is higher than the first speed.
- a frequency signal different from the first frequency segment is used to represent the fault signal.
- the different duty cycles of the signals represent different faults. 10% represents overvoltage, 20% represents overcurrent, 30% represents overtemperature, 40% represents Hall failure, and 50% represents integrated power module ⁇ fault, which is the frequency of high frequency signals.
- the interface unit further includes a ground connection terminal GND, a speed input port VSP, a DC bus voltage input port VDC, and a low voltage DC power input port VCC.
- An I/O port of the microprocessor MCU receives the external input speed signal through the voltage divider circuit and forms the speed input port VSP.
- the voltage dividing circuit includes a first resistor R101, a second resistor R102, a third resistor R103, a capacitor C105, a capacitor C106, and a diode VD10L.
- the interface unit includes a frequency generating circuit, and an I/O port of the microprocessor MCU outputs different frequency segment signals through the frequency generating circuit and forms a port FG through the shared port FG.
- the motor speed signal or the motor fault signal can be output. Without changing the structure of the existing motor, different fault signals of the motor can be fed back, and the operation is simple, the cost is low, and the reliability is high.
- Embodiment 2 As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 5, the present invention is a BLDC motor including a stator assembly, a rotor assembly, a control circuit board, a stator assembly, and a rotor assembly magnetic vehicle.
- the control circuit board is integrated with a microprocessor MCU, an inverter and an interface unit, the microprocessor MCU output signal controls the inverter, and the inverter is connected to control each phase coil winding of the stator assembly, and the interface unit includes a frequency
- an I/O port of the microprocessor MCU outputs a PWM signal of a different frequency and duty ratio through a frequency generating circuit and forms a port FG.
- the principle of the invention is: when the port FG outputs the motor speed signal to the outside, the frequency is defined in the first frequency segment, and the frequency of the PWM signal represents the magnitude of the speed in the range of the first frequency segment; When the fault signal is used, the second frequency signal different from the first frequency segment is used. When the BLDC motor has multiple fault signals, the different duty ratios of the PWM signals of the second frequency are used to represent different faults, the first frequency segment.
- the duty cycle of all PWM signals is 50%.
- the frequency of the second frequency signal is 1KHZ, 1 0%K represents overvoltage, 2 Q%K represents overcurrent, 3 Q%K represents overtemperature, 4 Q%K represents Hall failure, 5 Q%K represents integration
- the power module IPM is faulty.
- the method is simple and easy to operate. It can feedback different fault signals of the motor, with high reliability and low cost.
- Embodiment 3 As shown in FIG. 9, the present invention is an air conditioning system including an air conditioning system controller and a BLDC motor that drives a fan.
- the air conditioning system controller and the BLDC motor have five connection ports, and one ground connection terminal GND a speed input port VSP, a DC bus voltage input port VDC, a low voltage DC power input port VCC and a feedback port FG of the motor speed signal, wherein: when the BLDC motor outputs a motor speed signal to the air conditioning system controller, The frequency is defined in the first frequency segment, and the magnitude of the rotational speed is represented by the P signal frequency in the range of the first frequency segment; when the motor fault signal is outputted outward, the second frequency different from the first frequency segment is used signal.
- the port FG When the port FG outputs the motor speed signal outward, its frequency is defined in the first frequency segment.
- the magnitude of the frequency of the PWM signal is used to represent the magnitude of the speed; when the motor fault signal is outputted outward, Different from the second frequency signal of the first frequency segment, when the BLDC motor has multiple fault signals, the different duty cycles of the P-view signals of the second frequency are used to represent different faults, and all P-view signals of the first frequency segment Duty cycle is 50%.
- the frequency of the second frequency signal is 1 kHz.
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Abstract
Disclosed are a fault state feedback method for a BLDC motor, an application of the BLDC motor, and an air-conditioning system. The BLDC motor is provided with a feedback port FG that outputs a motor rotating speed signal outwards, the FG outputting a PWM signal. The method is characterized in that: when the port FG outputs the motor rotating speed signal outwards, the frequency of the signal is defined in a first frequency band, and within the range of the first frequency band, the frequency of the PWM signal is used to represent the rotating speed; and when a motor fault signal is output outwards, a second frequency signal different from the first frequency band is employed. The fault state feedback method is simple, convenient to carry out, capable of feeding back different fault signals of the motor, and high in reliability.
Description
一种 BLDC电机故障状态反馈方法及应用 BLDC电机、 空调*** 技术领域: BLDC motor fault state feedback method and application BLDC motor, air conditioning system Technical field:
本发明涉及 一种 BLDC电机故障状态反馈方法及应用 BLDC电机、空调***。 背景技术: The invention relates to a BLDC motor fault state feedback method and application BLDC motor and air conditioning system. Background technique:
现有行业内传统空调***、 盘管风机用的 BLDC电机(即直流无刷电机)具 有 5个连接端口, 一个与地连接接地端 GND、 一个速度输入端口 VSP、 一个直流 母线电压输入端口 VDC、一个低压直流电源输入端口 VCC和电机转速信号的反馈 端口 FG, 而大多数空调厂商的接口也是这样设计的。 In the existing industry, the traditional air conditioning system, the BLDC motor for the coil fan (ie, the brushless DC motor) has five connection ports, one ground connection GND, one speed input port VSP, one DC bus voltage input port VDC, A low-voltage DC power input port VCC and a feedback port FG for the motor speed signal, and the interface of most air conditioner manufacturers is designed as such.
但是这种直 BLDC电机没有设置电机的状态反馈, 因此空调的主控板无法读 取直流无刷电机的状态信息, 例如过温、 堵转、 过流、 霍尔失效、 时钟失效、 过压等等的电机状态信息。 随着客户需求, 要求电机厂家要在直流无刷电机上 反馈这些电机状态信息。 现在普遍的解决方案就是在直流无刷电机上增加一条 信号线来反馈这些电机状态信息, 但是这样就要改变现有电机的线夹模具、 空 调主板接口, 电机接口等等, 十分难操作, 而且成本高。 However, this straight BLDC motor does not set the state feedback of the motor, so the main control board of the air conditioner cannot read the status information of the DC brushless motor, such as over temperature, stall, over current, Hall failure, clock failure, over voltage, etc. Motor status information. As the customer demands, the motor manufacturer is required to feed back these motor status information on the DC brushless motor. The common solution now is to add a signal line to the DC brushless motor to feed back the status information of these motors, but this will change the clamp mold of the existing motor, the interface of the air conditioner motherboard, the motor interface, etc., which is very difficult to operate, and high cost.
发明内容: Summary of the invention:
本发明的目的是提供一种 BLDC电机故障状态反馈方法及应用 BLDC电机、 空调***, 该故障状态反馈方法简单, 操作方便, 可反馈电机不同的故障信号, 可靠性高; 该 BLDC电机结构简单, 在不改变现有电机结构的情况下, 可反馈电 机不同的故障信号, 操作简单, 成本低, 可靠性高; 该空调***结构简单, 操 作方便, 可靠性高。 The object of the present invention is to provide a BLDC motor fault state feedback method and a BLDC motor and an air conditioning system. The fault state feedback method is simple, easy to operate, and can feedback different fault signals of the motor, and has high reliability; the BLDC motor has a simple structure. Without changing the structure of the existing motor, the fault signal of the motor can be fed back, the operation is simple, the cost is low, and the reliability is high; the air conditioning system has the advantages of simple structure, convenient operation and high reliability.
本发明的目的是通过下述技术方案予以实现的。 The object of the present invention is achieved by the following technical solutions.
一种 BLDC电机故障状态反馈方法, 所述的 BLDC电机具有向外输出电机转 速信号的反馈端口 FG, FG输出的是 P觀信号, 当端口 FG向外输出电机转速信 号时, 其频率定义在第一频率段, 在第一频率段的范围内、 用该 P觀信号频率 大小代表转速的大小; 当向外输出电机故障信号时, 釆用不同于第一频率段的 第二频率信号。
上述所述 BLDC电机有多种故障信号时, 釆用第二频率的 PWM信号的不同占 空比来代表不同的故障。 A BLDC motor fault state feedback method, the BLDC motor has a feedback port FG for outputting a motor speed signal to the outside, and the FG output is a P-view signal. When the port FG outputs a motor speed signal to the outside, the frequency is defined in the first a frequency segment, in the range of the first frequency segment, the magnitude of the rotational speed is represented by the P signal frequency; when the motor fault signal is output outward, a second frequency signal different from the first frequency segment is used. When the BLDC motor described above has multiple fault signals, the different duty ratios of the PWM signals of the second frequency are used to represent different faults.
上述所述第一频率段的所有 P醫信号的占空比都是 50%。 The duty ratio of all the P medical signals of the first frequency segment described above is 50%.
上述所述第一频率段范围是 1 0HZ到 300HZ范围, 第二频率信号是在 1KHZ 频率。 The first frequency range described above ranges from 10 Hz to 300 Hz, and the second frequency signal is at 1 kHz.
一种 BLDC电机, 所述的 BLDC电机包括定子组件、 转子组件、 控制线路板, 定子组件和转子组件磁辆合, 控制线路板集成有微处理器 MCU、逆变器和接口单 元, 微处理器 MCU输出信号控制逆变器, 逆变器连接控制定子组件的每相线圈 绕组, 所述的接口单元包括频率生成电路, 微处理器 MCU的一个 I /o口通过频 率生成电路向外输出不同频率和占空比的 P觀信号并形成端口 FG。 A BLDC motor, the stator assembly, the rotor assembly, the control circuit board, the stator assembly and the rotor assembly are magnetically coupled, the control circuit board is integrated with the microprocessor MCU, the inverter and the interface unit, and the microprocessor The MCU output signal controls the inverter, and the inverter is connected to control each phase coil winding of the stator assembly. The interface unit includes a frequency generating circuit, and an I/O port of the microprocessor MCU outputs different frequencies through the frequency generating circuit. And the P-view signal of the duty cycle and form the port FG.
上述所述的频率生成电路是一个三极管开关电路。 The frequency generating circuit described above is a triode switching circuit.
上述所述的三极管开关电路包括三极管 Q1、第六电阻 R1 06、第五电阻 R1 05、 第四电阻 R1 04和电容 C1 07, 端口 FG串联第四电阻 R1 04、 第五电阻 R1 05和电 源 VCC2,端口 FG与第四电阻 R1 04之间的节点连接电容 C1 07—端,电容 C1 07另 一端接地, 第四电阻 R1 04、 第五电阻 R1 05之间的节点与三极管 Q1集电极连接, 三极管 Q1发射极连接地, 三极管 Q1基极通过第六电阻 R1 06与微处理器 MCU的 一个 I /o口连接。 The transistor switching circuit described above comprises a transistor Q1, a sixth resistor R1 06, a fifth resistor R1 05, a fourth resistor R1 04 and a capacitor C1 07, and the port FG is connected in series with a fourth resistor R1 04, a fifth resistor R1 05 and a power source VCC2. The node between the port FG and the fourth resistor R1 04 is connected to the capacitor C1 07- terminal, the other end of the capacitor C1 07 is grounded, and the node between the fourth resistor R1 04 and the fifth resistor R1 05 is connected to the collector of the transistor Q1, the triode The emitter of the Q1 is connected to the ground, and the base of the transistor Q1 is connected to an I/O port of the microprocessor MCU through the sixth resistor R1 06.
上述所述的端口 FG向外输出电机转速信号时, 其频率定义在第一频率段, 在第一频率段的范围内、 用该 P觀信号频率大小代表转速的大小; 当向外输出 电机故障信号时, 釆用不同于第一频率段的第二频率信号。 When the port FG described above outputs the motor speed signal to the outside, the frequency is defined in the first frequency segment, and the magnitude of the speed is represented by the P signal frequency in the range of the first frequency segment; When the signal is used, a second frequency signal different from the first frequency segment is used.
上述所述的 BLDC电机有多种故障信号时, 釆用第二频率的 PWM信号的不 同占空比来代表不同的故障, 第一频率段的所有 P觀信号的占空比都是 50%。。 When the BLDC motor described above has multiple fault signals, the different duty ratios of the PWM signals of the second frequency are used to represent different faults, and the duty ratios of all the P signals of the first frequency section are 50%. .
上述所述的第二频率信号的频率为 1KHZ, 1 0%K代表代表过压, 20%Κ代表过 流, 30%Κ代表过温, 40%Κ代表霍尔失效, 50%Κ代表集成功率模块 ΙΡΜ故障。 The frequency of the second frequency signal described above is 1 kHz, 10% K represents overvoltage, 20% Κ represents overcurrent, 30% Κ represents overtemperature, 40% Κ represents Hall failure, and 50% Κ represents integrated power. The module is faulty.
上述所述的接口单元还包括一个与地连接接地端 GND、 一个速度输入端口 VSP、 一个直流母线电压输入端口 VDC和一个低压直流电源输入端口 VCC。
一种空调***, 包括空调***控制器和驱动风机的 BLDC电机, 空调*** 控制器与 BLDC电机具有 5个连接端口, 一个与地连接接地端 GND、 一个速度输 入端口 VSP、 一个直流母线电压输入端口 VDC、 一个低压直流电源输入端口 VCC 和电机转速信号的反馈端口 FG, 其特征在于: 当 BLDC电机向空调***控制器输 出电机转速信号时, 其频率定义在第一频率段, 在第一频率段的范围内、 用该 P醫信号频率大小代表转速的大小; 当向外输出电机故障信号时, 釆用不同于第 一频率段的第二频率信号。 The interface unit described above further includes a ground connection GND, a speed input port VSP, a DC bus voltage input port VDC, and a low voltage DC power input port VCC. An air conditioning system includes an air conditioning system controller and a BLDC motor that drives the fan. The air conditioning system controller and the BLDC motor have five connection ports, one ground connection GND, one speed input port VSP, and one DC bus voltage input port. VDC, a low-voltage DC power input port VCC and a feedback port FG of the motor speed signal, characterized in that: when the BLDC motor outputs a motor speed signal to the air conditioner system controller, the frequency is defined in the first frequency segment, in the first frequency segment Within the range of the P-signal signal frequency, the magnitude of the rotational speed is used; when the motor fault signal is outputted outward, a second frequency signal different from the first frequency segment is used.
上述所述的 BLDC电机向空调***控制器输出多种故障信号时, 釆用第二频 率的 P觀信号的不同占空比来代表不同的故障。 When the BLDC motor described above outputs a plurality of fault signals to the air conditioner system controller, different duty ratios of the P signals of the second frequency are used to represent different faults.
上述所述的第一频率段的所有 PWM信号的占空比都是 50%。 The duty ratio of all PWM signals of the first frequency segment described above is 50%.
上述所述的第一频率段范围是 1 0HZ到 300HZ范围,第二频率信号是在 1KHZ 频率。 The first frequency range described above ranges from 10 Hz to 300 Hz, and the second frequency signal is at 1 kHz.
本发明与现有技术相比, 具有如下效果: 1 ) 当 BLDC电机向外输出电机转 速信号时, 其频率定义在第一频率段, 在第一频率段的范围内、 用该 P觀信号 频率大小代表转速的大小; 当向外输出电机故障信号时, 釆用不同于第一频率 段的第二频率信号, 通过共用端口 FG, 在端口 FG上即能够输出电机速度信号或 者电机故障信号, 无需改变现有电机的线夹模具、 空调主板接口, 电机接口等 等, 该方法简单, 操作方便, 可反馈电机不同的故障信号, 可靠性高, 成本低; 2 ) BLDC电机接口单元包括频率生成电路, 微处理器 MCU的一个 I /o口通过频率 生成电路向外输出不同频率段信号并形成端口 FG, 通过共用端口 FG, 在端口 FG 上即能够输出电机速度信号或者电机故障信号, 在不改变现有电机结构的情况 下, 可反馈电机不同的故障信号, 操作简单, 成本低, 可靠性高; 3 )第一频率 段的所有 P觀信号的占空比都是 50%, 第一频率段范围是 1 0HZ到 300HZ范围, 第二频率信号是在 1KHZ频率, 配置简单合理; 4 ) BLDC电机向空调***控制器 输出多种故障信号时, 釆用第二频率的 P觀信号的不同占空比来代表不同的故 障, 实施简便, 方便快捷。
附图说明: Compared with the prior art, the invention has the following effects: 1) When the BLDC motor outputs the motor speed signal outward, the frequency is defined in the first frequency segment, and the P signal frequency is used in the range of the first frequency segment. The size represents the magnitude of the rotational speed; when the motor fault signal is output outward, the second frequency signal different from the first frequency segment is used, and the motor speed signal or the motor fault signal can be output on the port FG through the shared port FG, without The utility model has the advantages of simple method, convenient operation, feedback of different fault signals of the motor, high reliability and low cost; 2) BLDC motor interface unit includes frequency generating circuit An I/O port of the microprocessor MCU outputs different frequency segment signals through the frequency generating circuit and forms a port FG. Through the shared port FG, the motor speed signal or the motor fault signal can be output on the port FG without changing. In the case of the existing motor structure, different fault signals of the motor can be fed back, the operation is simple, and the cost is low. High reliability; 3) The duty ratio of all P-view signals in the first frequency segment is 50%, the first frequency range is from 1 0HZ to 300HZ, and the second frequency signal is at 1KHZ, the configuration is simple and reasonable; When the BLDC motor outputs various fault signals to the air conditioner system controller, the different duty ratios of the P signals of the second frequency are used to represent different faults, which is simple and convenient to implement. BRIEF DESCRIPTION OF THE DRAWINGS:
图 1 是本发明直流无刷电机的结构示意图; 1 is a schematic structural view of a brushless DC motor of the present invention;
图 2是本发明的电路原理图; Figure 2 is a circuit schematic diagram of the present invention;
图 3 是本发明频率生成电路的具体电路图; 3 is a specific circuit diagram of a frequency generating circuit of the present invention;
图 4是本发明分压电路的具体电路图; Figure 4 is a specific circuit diagram of the voltage dividing circuit of the present invention;
图 5是本发明端口 FG反馈一种速度信号的示意图; 5 is a schematic diagram of feedback of a speed signal by the port FG of the present invention;
图 6是本发明端口 FG反馈另一种速度信号的示意图; 6 is a schematic diagram of another speed signal fed back by the port FG of the present invention;
图 7是本发明端口 FG反馈一种故障信号的示意图; 7 is a schematic diagram of feedback of a fault signal by the port FG of the present invention;
图 8是本发明端口 FG反馈另一种故障信号的示意图; 8 is a schematic diagram of another fault signal fed back by the port FG of the present invention;
图 9 是空调***的结构原理图。 Figure 9 is a structural schematic diagram of the air conditioning system.
具体实施方式: detailed description:
下面通过具体实施例并结合附图对本发明作进一步详细的描述: The present invention will be further described in detail below through the specific embodiments and the accompanying drawings:
实施例一: 如图 1和图 2所示, 本发明是一种 BLDC电机, 所述的直流无刷 电机包括定子组件 1、 转子组件 2、 控制线路板 3, 定子组件 1和转子组件 2磁 耦合, 控制线路板 3集成有微处理器 MCU、 逆变器和接口单元, 微处理器 MCU输 出信号控制逆变器, 逆变器连接控制定子组件 1的每相线圈绕组, 所述的接口 单元包括频率生成电路, 微处理器 MCU的一个 I /o口通过频率生成电路向外输 出不同频率段信号并形成端口 FG, 逆变器可以是集成功率模块 IPM, 它含有多 个 IGBT元件, 霍尔元件 HALL检测转子位置信号送到微处理器 MCU, 微处理器 MCU输出信号控制逆变器。 Embodiment 1 As shown in FIG. 1 and FIG. 2, the present invention is a BLDC motor, and the DC brushless motor includes a stator assembly 1, a rotor assembly 2, a control circuit board 3, a stator assembly 1 and a rotor assembly 2 Coupling, the control circuit board 3 is integrated with a microprocessor MCU, an inverter and an interface unit, the microprocessor MCU output signal controls the inverter, and the inverter is connected to control each phase coil winding of the stator assembly 1, the interface unit Including the frequency generating circuit, an I/O port of the microprocessor MCU outputs different frequency segment signals through the frequency generating circuit and forms a port FG. The inverter may be an integrated power module IPM, which contains multiple IGBT components, Hall The component HALL detects that the rotor position signal is sent to the microprocessor MCU, and the microprocessor MCU output signal controls the inverter.
如图 3所示, 所述的频率生成电路是一个三极管开关电路。 三极管开关电 路包括三极管 Ql、第六电阻 R106、 第五电阻 R105、第四电阻 R1 04和电容 C107, 端口 FG串联第四电阻 R104、 第五电阻 R1 05和电源 VCC2 +15V,端口 FG与第四 电阻 R104之间的节点连接电容 C107—端,电容 C107另一端接地,第四电阻 R104、 第五电阻 R105之间的节点与三极管 Q1集电极连接, 三极管 Q1发射极连接地, 三极管 Q1基极通过第六电阻 R106与敖处理器 MCU的一个 I /o口连接。
BLDC电机具有向外输出电机转速信号的反馈端口 FG, FG输出的是 PWM信 号, 当端口 FG向外输出电机转速信号时, 其频率定义在第一频率段, 在第一频 率段的范围内、 用该 P觀信号频率大小代表转速的大小; 当向外输出电机故障 信号时, 釆用不同于第一频率段的第二频率信号, BLDC电机有多种故障信号时, 釆用第二频率的 P醫信号的不同占空比来代表不同的故障, 第一频率段的所有 PWM信号的占空比都是 50%, 第一频率段范围是 10HZ到 300HZ范围, 第二频率 信号是在 1KHZ频率。 见图 5所示, BLDC电机的端口 FG对外可以输出第一频率 段 f O=l /Tl=50HZ, Tl=0. 02秒,代表反馈的是第一种转速信号,其中占空比为 50%; 如图 6 所示, BLDC 电机的端 口 FG 对外可以输出 第一频率段 f l = l/T2=100HZ, T2=0. 01 秒, 但占空比仍为 50% , 代表反馈的是第二种转速信 号, 由于 f2 > f l ,表示第二种转速比第一种转速更高。 As shown in FIG. 3, the frequency generating circuit is a triode switching circuit. The triode switch circuit includes a triode Q1, a sixth resistor R106, a fifth resistor R105, a fourth resistor R104, and a capacitor C107. The port FG is connected in series with the fourth resistor R104, the fifth resistor R1 05, and the power source VCC2 +15V, and the port FG and the fourth The node between the resistor R104 is connected to the capacitor C107-terminal, the other end of the capacitor C107 is grounded, the node between the fourth resistor R104 and the fifth resistor R105 is connected to the collector of the transistor Q1, the emitter of the transistor Q1 is connected to the ground, and the base of the transistor Q1 is passed. The sixth resistor R106 is connected to an I/O port of the 敖 processor MCU. The BLDC motor has a feedback port FG for outputting the motor speed signal to the outside, and the FG outputs a PWM signal. When the port FG outputs the motor speed signal to the outside, the frequency is defined in the first frequency segment, within the range of the first frequency segment, The P-view signal frequency represents the magnitude of the rotational speed; when the motor fault signal is output outward, the second frequency signal different from the first frequency segment is used, and when the BLDC motor has multiple fault signals, the second frequency is used. The different duty cycles of the P medical signal represent different faults. The duty ratio of all PWM signals in the first frequency segment is 50%, the first frequency range is in the range of 10HZ to 300HZ, and the second frequency signal is in the 1KHZ frequency. . As shown in Figure 5, the port FG of the BLDC motor can output the first frequency segment f O=l /Tl=50HZ, Tl=0. 02 seconds, representing the feedback of the first type of speed signal, wherein the duty cycle is 50 %; As shown in Figure 6, the port FG of the BLDC motor can output the first frequency segment fl = l/T2=100HZ, T2=0. 01 seconds, but the duty cycle is still 50%, which represents the second feedback. The speed signal, since f2 > fl, indicates that the second speed is higher than the first speed.
当端口 FG对外可以输出故障信号时, 釆用不同于第一频率段的频率信号来 代表故障信号。如图 7所示,端口 FG对外可以输出一种故障频率 f2=l /T3=lkHZ, T3=0. 001秒, 当有多种故障信号时, 釆用不同于第一频率段的固定频率 PWM信 号的不同占空比来代表不同的故障。 10%代表代表过压, 20%代表过流, 30%代表 过温, 40%代表霍尔失效, 50%代表集成功率模块 ΙΡΜ故障, Κ为高频率信号的频 率。 图 7中的 故障频率 f2的占空比是 80% , 表示超过额定转速故障; 如图 8 所示, 端口 FG对外可以输出一种故障频率 f 2=l/T3=lkHZ, T3=0. 001秒, 故障 频率 f 2的占空比是 50% , 50%占空比代表集成功率模块 IPM故障。 When the port FG can output a fault signal to the outside, a frequency signal different from the first frequency segment is used to represent the fault signal. As shown in Figure 7, the port FG can output a fault frequency f2=l /T3=lkHZ, T3=0. 001 seconds, when there are multiple fault signals, use a fixed frequency PWM different from the first frequency segment. The different duty cycles of the signals represent different faults. 10% represents overvoltage, 20% represents overcurrent, 30% represents overtemperature, 40% represents Hall failure, and 50% represents integrated power module ΙΡΜ fault, which is the frequency of high frequency signals. The duty ratio of the fault frequency f2 in Fig. 7 is 80%, indicating that the fault exceeds the rated speed; as shown in Fig. 8, the port FG can output a fault frequency f 2=l/T3=lkHZ, T3=0.001 In seconds, the duty cycle of the fault frequency f 2 is 50%, and the 50% duty cycle represents the IPM fault of the integrated power module.
如图 2和图 4所示, 所述的接口单元还包括一个与地连接接地端 GND、 一个 速度输入端口 VSP、一个直流母线电压输入端口 VDC和一个低压直流电源输入端 口 VCC。微处理器 MCU的一个 I/o口通过分压电路接收外部输入的速度信号并形 成速度输入端口 VSP。 所述的分压电路包括第一电阻 R101、 第二电阻 R102、 第 三电阻 R103、 电容 C105、 电容 C106和二极管 VD10L As shown in FIG. 2 and FIG. 4, the interface unit further includes a ground connection terminal GND, a speed input port VSP, a DC bus voltage input port VDC, and a low voltage DC power input port VCC. An I/O port of the microprocessor MCU receives the external input speed signal through the voltage divider circuit and forms the speed input port VSP. The voltage dividing circuit includes a first resistor R101, a second resistor R102, a third resistor R103, a capacitor C105, a capacitor C106, and a diode VD10L.
本发明的原理是: 接口单元包括频率生成电路, 微处理器 MCU的一个 I/o 口通过频率生成电路向外输出不同频率段信号并形成端口 FG,通过共用端口 FG,
在端口 FG上即能够输出电机速度信号或者电机故障信号, 在不改变现有电机结 构的情况下, 可反馈电机不同的故障信号, 操作简单, 成本低, 可靠性高。 The principle of the present invention is: The interface unit includes a frequency generating circuit, and an I/O port of the microprocessor MCU outputs different frequency segment signals through the frequency generating circuit and forms a port FG through the shared port FG. On the port FG, the motor speed signal or the motor fault signal can be output. Without changing the structure of the existing motor, different fault signals of the motor can be fed back, and the operation is simple, the cost is low, and the reliability is high.
实施例二: 如图 1、 图 2、 图 3、 图 5所示, 本发明是一种 BLDC电机, 所述 的 BLDC电机包括定子组件、 转子组件、 控制线路板, 定子组件和转子组件磁辆 合, 控制线路板集成有微处理器 MCU、 逆变器和接口单元, 微处理器 MCU输出信 号控制逆变器, 逆变器连接控制定子组件的每相线圈绕组, 所述的接口单元包 括频率生成电路, 微处理器 MCU的一个 I /o口通过频率生成电路向外输出不同 频率和占空比的 PWM信号并形成端口 FG。 本发明的原理是: 端口 FG向外输出电机转速信号时, 其频率定义在第一频 率段, 在第一频率段的范围内、 用该 PWM信号频率大小代表转速的大小; 当向外 输出电机故障信号时, 釆用不同于第一频率段的第二频率信号, BLDC电机有多 种故障信号时, 釆用第二频率的 PWM信号的不同占空比来代表不同的故障, 第一 频率段的所有 PWM信号的占空比都是 50%。, 第二频率信号的频率为 1KHZ, 1 0%K代 表代表过压, 2 Q%K代表过流, 3 Q%K代表过温, 4 Q%K代表霍尔失效, 5 Q%K代表集 成功率模块 IPM故障, 该方法简单, 操作方便, 可反馈电机不同的故障信号, 可 靠性高, 成本低。 Embodiment 2: As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 5, the present invention is a BLDC motor including a stator assembly, a rotor assembly, a control circuit board, a stator assembly, and a rotor assembly magnetic vehicle. The control circuit board is integrated with a microprocessor MCU, an inverter and an interface unit, the microprocessor MCU output signal controls the inverter, and the inverter is connected to control each phase coil winding of the stator assembly, and the interface unit includes a frequency To generate a circuit, an I/O port of the microprocessor MCU outputs a PWM signal of a different frequency and duty ratio through a frequency generating circuit and forms a port FG. The principle of the invention is: when the port FG outputs the motor speed signal to the outside, the frequency is defined in the first frequency segment, and the frequency of the PWM signal represents the magnitude of the speed in the range of the first frequency segment; When the fault signal is used, the second frequency signal different from the first frequency segment is used. When the BLDC motor has multiple fault signals, the different duty ratios of the PWM signals of the second frequency are used to represent different faults, the first frequency segment. The duty cycle of all PWM signals is 50%. The frequency of the second frequency signal is 1KHZ, 1 0%K represents overvoltage, 2 Q%K represents overcurrent, 3 Q%K represents overtemperature, 4 Q%K represents Hall failure, 5 Q%K represents integration The power module IPM is faulty. The method is simple and easy to operate. It can feedback different fault signals of the motor, with high reliability and low cost.
实施例三: 如图 9所示, 本发明是一种空调***, 包括空调***控制器和 驱动风机的 BLDC电机, 空调***控制器与 BLDC电机具有 5个连接端口, 一个 与地连接接地端 GND、 一个速度输入端口 VSP、 一个直流母线电压输入端口 VDC、 一个低压直流电源输入端口 VCC和电机转速信号的反馈端口 FG, 其特征在于: 当 BLDC电机向空调***控制器输出电机转速信号时,其频率定义在第一频率段, 在第一频率段的范围内、 用该 P觀信号频率大小代表转速的大小; 当向外输出 电机故障信号时, 釆用不同于第一频率段的第二频率信号。 端口 FG向外输出电 机转速信号时, 其频率定义在第一频率段, 在第一频率段的范围内、 用该 PWM 信号频率大小代表转速的大小; 当向外输出电机故障信号时, 釆用不同于第一 频率段的第二频率信号, BLDC电机有多种故障信号时, 釆用第二频率的 P觀信 号的不同占空比来代表不同的故障, 第一频率段的所有 P觀信号的占空比都是
50%。, 第二频率信号的频率为 1KHZ。 Embodiment 3: As shown in FIG. 9, the present invention is an air conditioning system including an air conditioning system controller and a BLDC motor that drives a fan. The air conditioning system controller and the BLDC motor have five connection ports, and one ground connection terminal GND a speed input port VSP, a DC bus voltage input port VDC, a low voltage DC power input port VCC and a feedback port FG of the motor speed signal, wherein: when the BLDC motor outputs a motor speed signal to the air conditioning system controller, The frequency is defined in the first frequency segment, and the magnitude of the rotational speed is represented by the P signal frequency in the range of the first frequency segment; when the motor fault signal is outputted outward, the second frequency different from the first frequency segment is used signal. When the port FG outputs the motor speed signal outward, its frequency is defined in the first frequency segment. In the range of the first frequency segment, the magnitude of the frequency of the PWM signal is used to represent the magnitude of the speed; when the motor fault signal is outputted outward, Different from the second frequency signal of the first frequency segment, when the BLDC motor has multiple fault signals, the different duty cycles of the P-view signals of the second frequency are used to represent different faults, and all P-view signals of the first frequency segment Duty cycle is 50%. The frequency of the second frequency signal is 1 kHz.
以上实施例为本发明的较佳实施方式, 但本发明的实施方式不限于此, 其 他任何未背离本发明的精神实质与原理下所作的改变、 修饰、 替代、 组合、 简 化, 均为等效的置换方式, 都包含在本发明的保护范围之内。
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention are equivalent. The manner of replacement is included in the scope of protection of the present invention.
Claims
1、 一种 BLDC电机故障状态反馈方法, 所述的 BLDC电机具有向外输出电机 转速信号的反馈端口 FG, 端口 FG输出的是 PWM信号, 其特征在于: 当端口 FG 向外输出电机转速信号时, 其频率定义在第一频率段, 在第一频率段的范围内、 用该 P觀信号频率大小代表转速的大小; 当向外输出电机故障信号时, 釆用不 同于第一频率段的第二频率信号。 1. A BLDC motor fault status feedback method. The BLDC motor has a feedback port FG that outputs a motor speed signal to the outside. The port FG outputs a PWM signal. It is characterized in that: when the port FG outputs a motor speed signal to the outside, , its frequency is defined in the first frequency section. Within the range of the first frequency section, the P signal frequency is used to represent the speed; when the motor fault signal is output to the outside, a third frequency that is different from the first frequency section is used. Two frequency signals.
2、 根据权利要求 1所述的一种 BLDC电机故障状态反馈方法, 其特征在于: BLDC电机有多种故障信号时, 釆用第二频率的 P觀信号的不同占空比来代表不 同的故障。 2. A BLDC motor fault status feedback method according to claim 1, characterized in that: when the BLDC motor has multiple fault signals, different duty cycles of the P22 signal of the second frequency are used to represent different faults. .
3、 根据权利要求 1或 2所述的一种 BLDC电机故障状态反馈方法, 其特征 在于: 第一频率段的所有 PWM信号的占空比都是 50%。 3. A BLDC motor fault status feedback method according to claim 1 or 2, characterized in that: the duty cycle of all PWM signals in the first frequency band is 50%.
4、 根据权利要求 3所述的一种 BLDC电机故障状态反馈方法, 其特征在于: 第一频率段范围是 10HZ到 300HZ范围, 第二频率信号是在 1KHZ频率。 4. A BLDC motor fault status feedback method according to claim 3, characterized in that: the first frequency range range is from 10HZ to 300HZ, and the second frequency signal is at a frequency of 1KHZ.
5、 一种实现权利要求 1所述的 BLDC电机故障状态反馈方法的 BLDC电机, 所述的 BLDC电机包括定子组件、 转子组件、 控制线路板, 定子组件和转子组件 磁辆合, 控制线路板集成有微处理器 MCU、 逆变器和接口单元, 微处理器 MCU输 出信号控制逆变器, 逆变器连接控制定子组件的每相线圈绕组, 所述的接口单 元包括频率生成电路, 微处理器 MCU的一个 I /o口通过频率生成电路向外输出 不同频率和占空比的 PWM信号并形成端口 FG。 5. A BLDC motor that implements the BLDC motor fault status feedback method according to claim 1. The BLDC motor includes a stator assembly, a rotor assembly, and a control circuit board. The stator assembly and the rotor assembly are magnetically coupled, and the control circuit board is integrated. There is a microprocessor MCU, an inverter and an interface unit. The microprocessor MCU outputs signals to control the inverter. The inverter is connected to control each phase coil winding of the stator assembly. The interface unit includes a frequency generation circuit, and the microprocessor An I/O port of the MCU outputs PWM signals of different frequencies and duty cycles through a frequency generation circuit and forms port FG.
6、 根据权利要求 3所述的一种 BLDC电机, 其特征在于: 所述的频率生成 电路是一个三极管开关电路。 6. A BLDC motor according to claim 3, characterized in that: the frequency generating circuit is a triode switching circuit.
7、 根据权利要求 4所述的一种 BLDC电机, 其特征在于: 所述的三极管开 关电路包括三极管 Ql、 第六电阻 R106、 第五电阻 R105、 第四电阻 R104和电容 C1 07 , 端口 FG串联第四电阻 R104、 第五电阻 R105和电源 VCC2,端口 FG与第四 电阻 R104之间的节点连接电容 C107—端,电容 C107另一端接地,第四电阻 R104、 第五电阻 R105之间的节点与三极管 Q1集电极连接, 三极管 Q1发射极连接地,
三极管 Ql基极通过第六电阻 R106与敖处理器 MCU的一个 I /o口连接。 7. A BLDC motor according to claim 4, characterized in that: the triode switching circuit includes a triode Q1, a sixth resistor R106, a fifth resistor R105, a fourth resistor R104 and a capacitor C107, and the port FG is connected in series The fourth resistor R104, the fifth resistor R105 and the power supply VCC2, the node between the port FG and the fourth resistor R104 is connected to one end of the capacitor C107, the other end of the capacitor C107 is connected to ground, the node between the fourth resistor R104 and the fifth resistor R105 is connected to The collector of transistor Q1 is connected, and the emitter of transistor Q1 is connected to ground. The base of the transistor Q1 is connected to an I/O port of the Ao processor MCU through the sixth resistor R106.
8、 根据权利要求 5或 6或 7所述的一种 BLDC电机, 其特征在于: 端口 FG 向外输出电机转速信号时, 其频率定义在第一频率段, 在第一频率段的范围内、 用该 P觀信号频率大小代表转速的大小; 当向外输出电机故障信号时, 釆用不 同于第一频率段的第二频率信号。 8. A BLDC motor according to claim 5, 6 or 7, characterized in that: when the port FG outputs a motor speed signal, its frequency is defined in the first frequency band, and within the range of the first frequency band, The frequency of the P2 signal is used to represent the speed of rotation; when the motor fault signal is output, a second frequency signal different from the first frequency band is used.
9、 根据权利要求 8所述的一种 BLDC电机, 其特征在于: BLDC电机有多种 故障信号时, 釆用第二频率的 P觀信号的不同占空比来代表不同的故障, 第一 频率段的所有 PWM信号的占空比都是 50%。。 9. A BLDC motor according to claim 8, characterized in that: when the BLDC motor has multiple fault signals, different duty cycles of the P28 signal of the second frequency are used to represent different faults, and the first frequency The duty cycle of all PWM signals in the segment is 50%. .
10、 根据权利要求 9所述的一种 BLDC电机, 其特征在于: 第二频率信号的 频率为 1KHZ, 1 Q%K代表代表过压, 2 Q%K代表过流, 3Q%K代表过温, 4 Q%K代表 霍尔失效, 50%K代表集成功率模块 IPM故障。 10. A BLDC motor according to claim 9, characterized in that: the frequency of the second frequency signal is 1KHZ, 1Q%K represents overvoltage, 2Q%K represents overcurrent, and 3Q%K represents overtemperature. , 4 Q%K represents Hall failure, 50%K represents integrated power module IPM failure.
11、 根据权利要求 7所述的一种 BLDC电机, 其特征在于: 接口单元还包括 一个与地连接接地端 GND、 一个速度输入端口 VSP、 一个直流母线电压输入端口 VDC和一个低压直流电源输入端口 VCC。 11. A BLDC motor according to claim 7, characterized in that: the interface unit further includes a ground terminal GND, a speed input port VSP, a DC bus voltage input port VDC and a low-voltage DC power input port VCC.
12、 一种应用权利要求 5所述的 BLDC电机的空调***, 包括空调***控制 器和驱动风机的 BLDC电机, 空调***控制器与 BLDC电机具有 5个连接端口, 一个与地连接接地端 GND、 一个速度输入端口 VSP、 一个直流母线电压输入端口 VDC、 一个低压直流电源输入端口 VCC和电机转速信号的反馈端口 FG, 其特征在 于: 当 BLDC电机向空调***控制器输出电机转速信号时, 其频率定义在第一频 率段, 在第一频率段的范围内、 用该 P觀信号频率大小代表转速的大小; 当向 外输出电机故障信号时, 釆用不同于第一频率段的第二频率信号。 12. An air conditioning system using the BLDC motor of claim 5, including an air conditioning system controller and a BLDC motor that drives a fan. The air conditioning system controller and the BLDC motor have five connection ports, one of which is connected to the ground terminal GND. A speed input port VSP, a DC bus voltage input port VDC, a low-voltage DC power input port VCC and a feedback port FG for the motor speed signal, which are characterized by: When the BLDC motor outputs the motor speed signal to the air conditioning system controller, its frequency It is defined in the first frequency segment. Within the range of the first frequency segment, the frequency of the P2 signal is used to represent the size of the rotation speed; when the motor fault signal is output to the outside, a second frequency signal different from the first frequency segment is used. .
1 3、 根据权利要求 12所述的一种空调***, 其特征在于: BLDC电机向空调 ***控制器输出多种故障信号时, 釆用第二频率的 P醫信号的不同占空比来代 表不同的故障。 13. An air conditioning system according to claim 12, characterized in that: when the BLDC motor outputs multiple fault signals to the air conditioning system controller, different duty cycles of the P medical signal of the second frequency are used to represent different fault signals. failure.
14、 根据权利要求 1 3所述的一种空调***, 其特征在于: 第一频率段的所 有 PWM信号的占空比都是 50%。
14. An air conditioning system according to claim 13, characterized in that: the duty cycle of all PWM signals in the first frequency band is 50%.
15、 根据权利要求 12或 1 3或 14所述的一种空调***, 其特征在于: 第. 频率段范围是 10HZ到 300HZ范围, 第二频率信号是在 1KHZ频率。
15. An air conditioning system according to claim 12, 13 or 14, characterized in that: the first frequency range range is from 10HZ to 300HZ, and the second frequency signal is at a frequency of 1KHZ.
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