窦康乐,严仲明,李海涛,程志,吴锐,王豫.大功率IGBT模块串联动态均压的研究[J].电测与仪表,2012,49(4):87-91. DOU Kang-le , YAN Zhong-ming , LI Hai-tao , CHENG Zhi , WU Rui , WANG Yu.Research on Dynamic Voltage Sharing of High-power Series Connected IGBTs[J].Electrical Measurement & Instrumentation,2012,49(4):87-91.
大功率IGBT模块串联动态均压的研究
Research on Dynamic Voltage Sharing of High-power Series Connected IGBTs
The serial use of the Insulated Gate Bipolar transistor(IGBT) provides a shortcut method to improve withstand voltage capability.The dynamic voltage sharing must be resolved when IGBT as the main circuit-breaker of inductance stored energy pulse power system.In engineering applications,the uneven gate drive signals of the series IGBTs are the most important factor leading to the dynamic voltage sharing at IGBTs switching moment.This paper respectively analyzes and validates the compensation effect of load’s passive voltage sharing and grid’s initiative voltage sharing.The results show that both two methods can achieve a good effect of dynamic voltage sharing.On this basis,the series application of multiple IGBTs modules has been proposed by the means of resistance and capacitance diode.The simulation validates the feasibility of series application of three IGBTs in this way.It will do a great significance on engineering applications.
