Research on the Implementation of Overcurrent Protection Circuit for High Voltage and High Power Inverter Power Supply
The driving and protection of IGBT(Insulated Gate Bipolar Transistor)are the key points in the design of high-voltage and high-power inverter power supplies.In general,IGBTs can only withstand a few microseconds of overcurrent time,which requires a reliable overcurrent protection circuit to ensure the reliability and stability of power supply operation.The conventional overcurrent protection circuit mainly detects parameters such as emitter voltage and collector current to determine whether IGBT is overcurrent.The overcurrent signal circuit will generate a low-level signal when passing through the IGBT.This article proposes an IGBT overcurrent protection scheme with 2SD315A as the core,which has stronger anti-interference performance,avoids frequent tripping protection actions,and ensures that the action is completed within the allowable time of IGBT overcurrent.
high voltage and high powerinverter power supplyovercurrent protectionIGBTcircuit
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