WO2021203699A1 - 变频器 igbt 驱动控制方法和控制装置 - Google Patents
变频器 igbt 驱动控制方法和控制装置 Download PDFInfo
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- WO2021203699A1 WO2021203699A1 PCT/CN2020/128972 CN2020128972W WO2021203699A1 WO 2021203699 A1 WO2021203699 A1 WO 2021203699A1 CN 2020128972 W CN2020128972 W CN 2020128972W WO 2021203699 A1 WO2021203699 A1 WO 2021203699A1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
Definitions
- the invention belongs to the technical field of power electronics, and in particular relates to an inverter IGBT drive control method and an inverter IGBT drive control device.
- the single-channel plug-and-play driver 1SP0335 produced and sold by Power Integrations can safely and reliably drive parallel high-voltage, high-power IGBT modules.
- the driving logic of this kind of driver during normal operation is to return a 700ns high-level pulse signal after receiving the trigger signal, and return a 700ns high-level pulse signal after receiving the turn-off signal to represent the normal operation of the driver. In the process of triggering, if a fault occurs, a 9 ⁇ s high-level signal will be fed back.
- the IGBT module If the IGBT module is used to drive an inductive load, such as a motor, it needs to collect the clock signals of six IGBTs, which puts forward very high requirements for the selection of an external crystal oscillator.
- the driver since the driver may also be integrated with the DC voltage detection module, output voltage detection module, and current detection module on the same PCB circuit board, the external crystal oscillator will introduce high-frequency signals, which can easily cause EMC to exceed the standard and affect the detection accuracy.
- An inverter IGBT drive control method comprising the following steps: a first processor determines whether to generate a trigger level signal according to the working state of the inverter; if the trigger level signal is generated, the first processor receives the output of the drive circuit Feedback signal and determine whether there is an output pulse in the feedback signal; if there is an output pulse in the feedback signal, and the current feedback signal has the same level state as the trigger level signal, the first processor sends The second processor outputs a driving abnormal level signal; if there is an output pulse in the feedback signal, and the current feedback signal is opposite to the level state of the trigger level signal, the first processor sends the signal to the second processor The output drives the normal level signal.
- the first processor determines that the trigger level signal is not generated according to the working state of the inverter, the first processor outputs a system holding level signal to the second processor; wherein , The system keeps the level signal at the same level as the drive abnormal level signal.
- the abnormal drive level signal is a high level signal
- the drive normal level signal is a low level signal
- the system maintain level signal is a high level signal
- the drive abnormal level signal is a low level signal
- the drive normal level signal is a high level signal
- the system maintain level signal is Low-level signal
- the method further includes the following steps: configuring a first flag bit, a second flag bit, a third flag bit, and a fourth flag bit in the first processor; A flag bit, a second flag bit, a third flag bit, and a fourth flag bit are configured as 0; if the first processor determines that the trigger level signal is not generated according to the working state of the inverter, then the first The flag bit and the second flag bit are configured as 0; if the first processor determines that the trigger level signal is generated according to the working state of the inverter and the first processor receives the feedback signal output by the drive circuit, it will The first flag bit and the second flag bit are configured as 1; if the first processor determines that there is an output pulse in the feedback signal, the third flag bit is configured to follow the trigger level signal; if When the trigger level signal is generated, the third flag bit is configured as 1; it is determined whether the first flag bit, the second flag bit, and the third flag bit are all configured as 1; if
- the first processor is a CPLD controller.
- an inverter IGBT drive control device including: a trigger level signal generation module, the trigger level signal generation module is used to determine whether to generate a trigger level signal according to the working state of the inverter; A judgment module, the first judgment module is used to receive the feedback signal output by the driving circuit and judge whether there is an output pulse in the feedback signal when the trigger level signal is generated; the second judgment module, the The second judgment module is used for judging whether the current feedback signal and the level state of the trigger level signal are the same when the output pulse is present in the feedback signal; and a signal output module, the signal output module is used for When the second judgment module judges that the current feedback signal and the trigger level signal have the same level state, it is configured to output a drive abnormal level signal to the external processor; and is used to judge the current feedback in the second judgment module When the level state of the signal is opposite to the trigger level signal, the configuration is configured to output a driving normal level signal to the external processor.
- the signal output module is further configured to output a system holding level signal to an external processor without generating the trigger level signal; wherein, the system holding level signal is related to the drive abnormality The level state of the level signal is the same.
- the abnormal drive level signal is a high level signal
- the drive normal level signal is a low level signal
- the system maintain level signal is a high level signal
- the abnormal drive level signal is a low level signal
- the drive normal level signal is a high level signal
- the system maintain level signal is a low level signal
- the inverter system is adapted to a variety of driving circuits.
- Fig. 1 is a flowchart of the first specific embodiment of the inverter IGBT drive control method disclosed in the present invention
- FIG. 2 is a flowchart of a second specific embodiment of the inverter IGBT drive control method disclosed in the present invention
- FIG. 3 is a flowchart of a third specific embodiment of the inverter IGBT drive control method disclosed in the present invention.
- Figure 4 is a system architecture diagram of the inverter IGBT drive system
- Fig. 5 is a schematic block diagram of the structure of the inverter IGBT drive control device disclosed in the present invention.
- FIG. 1 In order to play the role of early warning and protection, while avoiding the introduction of external crystal oscillators, so that the system can be matched with multiple types of drive circuits, a newly designed inverter IGBT drive control method is shown in Figure 1.
- Figure 4 To introduce the basic hardware architecture of the inverter control system.
- the PWM signal generated by the DSP is output to the IGBT inverter unit to control Its on-off state and further control the operating state of the load.
- the PWM signal generated by the DSP can be transmitted in serial mode or in parallel mode. It is preferable to use optical fiber as the transmission medium to meet the long-distance signal transmission requirements of the high-power frequency converter.
- the normal operation and protection of the IGBT inverter unit are realized by the drive circuit.
- the drive circuit of the IGBT inverter unit may use drive circuit integrated chips produced and sold by multiple companies.
- the model of the drive circuit integrated chip includes but is not limited to Power The single-channel plug-and-play driver 1SP0335 ⁇ 1SP 0635 produced and sold by Integrations.
- the driving circuit and the first processor communicate in two directions to upload the working status of the IGBT inverter unit.
- the first processor is preferably implemented by a CPLD controller.
- the CPLD controller Facing the load of the IGBT inverter unit circuit, the CPLD controller has more stable performance and faster signal transmission speed, and can flexibly realize a variety of functions.
- the transmission medium of the CPLD controller is also preferably optical fiber to meet the long-distance signal transmission requirements of the high-power frequency converter.
- control methods are used to automatically monitor the working status of the IGBT inverter unit. Specifically, it includes the following steps:
- the first processor judges whether to generate a trigger level signal according to the working state of the frequency converter. When the inverter is in the working state, the first processor generates a trigger level signal to ensure the normal operation of the entire inverter system. When the inverter is in the standby state, the first processor interrupts the generation of the trigger level signal.
- the trigger level signal is preferably set to a high level signal.
- the first processor determines whether there is an output pulse in the feedback signal.
- the output pulse includes at least one falling edge of the signal, that is, when the feedback signal includes a complete combination of a high-level signal, a falling edge, and a low-level signal, the first processor determines that there is an output pulse in the feedback signal , The communication between the first processor and the drive circuit is normal.
- the first processor further judges whether the current feedback signal and the level state of the trigger level signal are the same. If the current feedback signal and the trigger level signal have the same level state, it indicates that the switching behavior of the IGBT inverter unit controlled by the driving circuit is abnormal, and the first processor outputs a driving abnormal level signal to the second processor.
- the second processor can be the host computer of the CPLD controller, or other integrated chips with data processing capabilities and independent multi-channel I/O interfaces.
- the model of the second processor will not be further described here. limited.
- the inverter system is adapted to a variety of driving circuits.
- the first processor judges not to generate a trigger level signal according to the working state of the inverter, and the first processor further outputs a system holding level signal to the second processor.
- the system maintains the same level state of the level signal and the level state of the drive abnormal level signal.
- the driving abnormal level signal as a high level signal
- the driving normal level signal as a low level signal
- the system maintaining level signal as a high level signal
- the driving abnormal level signal as a low level signal
- driving the normal level signal as a high level signal
- the system maintaining level signal as a low level signal
- the system can determine which output signal is generated through the first flag bit, the second flag bit, and the third flag bit, and whether the current IGBT inverter unit is in a normal working state.
- the external processor can also obtain the working status of the system through the fourth flag bit. When the fourth flag bit is set to 1, it can quickly intervene in the system, and the response speed of the system can be quickly improved.
- FIG. 5 Another aspect of the present invention provides an inverter IGBT drive control device, as shown at 10 in FIG. 5, which includes the following modules:
- Trigger level signal generation module 10 Trigger level signal generation module 10; trigger level signal generation module 10 is used to determine whether to generate a trigger level signal according to the working state of the inverter: when the inverter is in working state, the trigger level signal generation module 10 is configured to control to The external output trigger level signal; when the inverter is in the standby state, the trigger level signal generation module 10 is configured to interrupt the generation of the trigger level signal.
- the trigger level signal is a high level signal.
- the first judging module 12 is used for receiving the feedback signal output by the driving circuit and judging whether there is an output pulse in the feedback signal when the trigger level signal is generated.
- the output pulse includes the falling edge of at least one signal, that is, when the feedback signal includes a complete combination of a high-level signal, a falling edge, and a low-level signal, the first determining module 12 is configured to determine that there is an output pulse in the feedback signal.
- the second judging module 13 is used to judge whether the current feedback signal and the trigger level signal are the same in the state of the output pulse in the feedback signal; if the current feedback signal is equal to the trigger level signal If the level state is the same, it means that the switching behavior of the IGBT inverter unit controlled by the drive circuit is abnormal; if the current feedback signal is opposite to the level state of the trigger level signal, it means that the switching behavior of the IGBT inverter unit controlled by the drive circuit is normal.
- the signal output module 14 is used to configure the external processor to output a driving abnormal level signal when the second judgment module 13 judges that the current feedback signal is the same as the trigger level signal;
- the second judgment module 13 judges that the level state of the current feedback signal and the trigger level signal are opposite, it is configured to output a driving normal level signal to the external processor.
- the drive circuit with feedback pulse or square wave signal can be matched with the above-mentioned protection control device, no external crystal oscillator is required, the matching degree of the control device is higher, and the use is more flexible.
- the signal output module is also used to configure to output a system holding level signal to the external processor without generating a trigger level signal; wherein the level state of the system holding level signal is the same as that of the driving abnormal level signal. In order to realize the normal operation of the system in the standby state.
- the driving abnormal level signal it is preferable to set the driving abnormal level signal as a high level signal, the driving normal level signal as a low level signal, and the system maintaining level signal as a high level signal.
- the driving abnormal level signal it is also possible to set the driving abnormal level signal as a low level signal, the driving normal level signal as a high level signal, and the system maintaining level signal as a low level signal.
- the embodiment of the present application also provides a computer storage medium, wherein the computer storage medium is stored in a computer program for electronic data exchange, and the computer program causes the frequency converter to execute part or all of the steps of any method recorded in the above method embodiment.
- the disclosed device may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the above-mentioned units or modules is only a logical function division.
- there may be other division methods for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
- the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
- the units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one physical space, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
- the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
- the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
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- Engineering & Computer Science (AREA)
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- Control Of High-Frequency Heating Circuits (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
Description
Claims (10)
- 一种变频器IGBT驱动控制方法,其特征在于,包括以下步骤:第一处理器根据变频器工作状态判断是否生成触发电平信号;如果生成所述触发电平信号,所述第一处理器接收驱动电路输出的反馈信号,并判断所述反馈信号中是否存在输出脉冲;如果所述反馈信号中存在输出脉冲,且当前反馈信号与所述触发电平信号的电平状态相同,则所述第一处理器向第二处理器输出驱动异常电平信号;如果所述反馈信号中存在输出脉冲,且当前反馈信号与所述触发电平信号的电平状态相反,则所述第一处理器向第二处理器输出驱动正常电平信号。
- 根据权利要求1所述的变频器IGBT驱动控制方法,其特征在于:如果所述第一处理器根据变频器工作状态判断不生成触发电平信号,则所述第一处理器向第二处理器输出***保持电平信号;其中,所述***保持电平信号与所述驱动异常电平信号的电平状态相同。
- 根据权利要求2所述的变频器IGBT驱动控制方法,其特征在于:所述驱动异常电平信号为高电平信号,所述驱动正常电平信号为低电平信号,所述***保持电平信号为高电平信号。
- 根据权利要求2所述的变频器IGBT驱动控制方法,其特征在于:所述驱动异常电平信号为低电平信号,所述驱动正常电平信号为高电平信号,所述***保持电平信号为低电平信号。
- 根据权利要求3所述的变频器IGBT驱动控制方法,其特征在于:还包括以下步骤:在所述第一处理器中配置第一标志位、第二标志位、第三标志位和第四标志位;初始状态下,所述第一标志位、第二标志位、第三标志位和第四标志位配置为0;如果所述第一处理器根据变频器工作状态判断不生成所述触发电平信号,则保持所述第一标志位和第二标志位配置为0;如果所述第一处理器根据变频器工作状态判断生成所述触发电平信号且所述第一处理器接收到驱动电路输出的反馈信号,则将所述第一标志位和第二标志位配置为1;如果所述第一处理器判断所述反馈信号中存在输出脉冲,则将所述第三标志位配置为跟随所述触发电平信号;如果生成所述触发电平信号,则将所述第三标志位配置为1;判断所述第一标志位、第二标志位和第三标志位是否均配置为1;如果所述第一标志位、第二标志位和第三标志位均配置为1,则将所述第四标志位配置为1,所述第一处理器向第二处理器输出驱动异常电平信号;如果所述第一标志位、第二标志位和第三标志位不均配置为1,则保持将第四标志位配置为0,如果第一标志位和第二标志位均配置为0,所述第一处理器向第二处理器输出***保持电平信号;如果第一标志位和第二标志位均配置为1,所述第一处理器向第二处理器输出驱动正常电平信号。
- 根据权利要求1至5任一项所述的变频器LGBT驱动控制方法,其特征在于,所述第一处理器为CPLD控制器。
- 一种变频器IGBT驱动控制装置,其特征在于,包括:触发电平信号生成模块,所述触发电平信号生成模块用于根据变频器工作状态判断是否生成触发电平信号;第一判断模块,所述第一判断模块用于在生成所述触发电平信号的状态下,接收驱动电路输出的反馈信号并判断所述反馈信号中是否存在输出脉冲;第二判断模块,所述第二判断模块用于在所述反馈信号中存在所述输出脉冲的状态下判断当前反馈信号与所述触发电平信号的电平状态是否相同;和信号输出模块,所述信号输出模块用于在所述第二判断模块判断当前反馈信号与所述触发电平信号的电平状态相同时,配置向外部处理器输出驱动异常电平信号;且用于在所述第二判断模块判断当前反馈信号与所述触发电平信号的电平状态相反时,配置向外部处理器输出驱动正常电平信号。
- 根据权利要求7所述的变频器IGBT驱动控制装置,其特征在于,所述信号输出模块还用于在不生成所述触发电平信号的状态下,配置向外部处理器输出***保持电平信号;其中,所述***保持电平信号与所述驱动异常电平信号的电平状态相同。
- 根据权利要求8所述的变频器IGBT驱动控制装置,其特征在于,所述驱动异常电平信号为高电平信号,所述驱动正常电平信号为低电平信号,所述***保持电平信号为高电平信号。
- 根据权利要求8所述的变频器IGBT驱动控制装置,其特征在于,所述驱动异常电平信号为低电平信号,所述驱动正常电平信号为高电平信号,所述***保持电平信号为低电平信号。
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CN111245206A (zh) * | 2020-04-10 | 2020-06-05 | 青岛中加特电气股份有限公司 | 变频器igbt驱动控制方法和控制装置 |
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AU2020441878B2 (en) | 2023-07-06 |
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