高压大功率逆变电源过流保护电路的实现研究  

Research on the Implementation of Overcurrent Protection Circuit for High Voltage and High Power Inverter Power Supply

作　　者：罗光毅 李青 LUO Guangyi;LI Qing

机构地区：[1]遵义师范学院工学院,贵州遵义563006

出　　处：《电力系统装备》2024年第9期60-62,共3页Electric Power System Equipment

摘　　要：IGBT(绝缘栅双极晶体管)驱动与保护是高压大功率逆变电源设计中的重点。一般情况下,IGBT只能承受几微秒的过流时间,这就必须要有可靠的过流保护电路,确保电源运行的可靠性、稳定性。常规的过流保护电路判断IGBT是否过流主要是检测发射极、集电极电压等参数。过流信号电路在经过IGBT时会产生低电平信号。文章提出以2SD315A为核心的IGBT过流防护方案,该方案具有更强的抗干扰性能,可避免跳闸保护频繁动作,确保在IGBT过流允许时间内完成动作。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.

关 键 词：高压大功率 逆变电源 过流保护 IGBT 电路 

分 类 号：TM464[电气工程—电器]