高压SVG中IGBT串联均压电路分析

摘要

The series operating of insulated gate bipolar transistor (IGBT) can significantly expand the capacity of IGBT, but also bring pressure imbalances.To eliminate the over-voltage in process of IGBT Pressure, we use a auxiliary circuit Pressure whose control is easy and structure is simple,and explain its working principle in detail.The analysis shows that this auxiliary circuit Pressure can significantly reduce the over-voltage of IGBT and has some reference value on the project.%绝缘栅型双极晶体管(IGBT)的串联运行可以显著扩充IGBT的容量,但同时也带来了均压失衡的问题.为了消除IGBT均压过程中的过电压,本文采用了一种控制容易,结构简单的均压辅助电路,并对其工作原理进行了详细的说明.通过分析表明,这种均压辅助电路可以显著的降低IGBT上产生的过电压,在工程上具有一定的参考意义.