Research on parallel current sharing design of four-quadrant power module for high-power electric locomotive
The four-quadrant IGBT power module for AC drive high-power electric locomotives usually adopts parallel legs,which may lead to current imbalance due to inconsistent parallel parameters.In this paper,the technical research on current imbalance is carried out,and the prototype trial production and verification are completed through IGBT parallel consistency screening,symmetrical DC connection and external laminated bus design.The verification results show that the current sharing performance of the parallel legs of power module is effectively improved.The parallel-leg power module optimized by the above methods can effectively improve the reliability and life of IGBT application,which is of positive significance for the stable operation of high-power electric locomotives.
high-power electric locomotivesfour-quadrant IGBTparallel current sharing
万方数据
维普
