一种带有中点变压器的中压直流与中压交流铁路牵引供电集成模块化变换器

This work presents a half bridge (HB) submodules (SMs) based modular multilevel converter (MMC) topology intended to integrate MVdc grid with a single phase MVac grid for railway traction power supply. The topology uses reduced arms/chain-links (two arms) of conventional HB-MMC and a mid-point transformer at the ac side to employ galvanic isolation needed for this application. Further, by utilizin...