DC01型电动列车辅助逆变器起动失效分析及其解决措施

Analysis and Improvement for the Auxiliary Inverter Starting Failure

经试验分析,辅助逆变器起动失效是由蓄电池电压过低、控制电源电流的冲击及相关干扰等因素综合造成的。对该故障,可通过防止干扰引起的误触发、改变保护动作设定值、增设逆变器起动专用DC/DC升压变换器等措施予以解决。

As the test shows, the starting failure of auxiliary inverter is caused by the low storage battery voltage, the impact of the power control battery and other related factors, This paper discusses the mechanism of DC metro train failure, holds that some improvement measures, such as interference prevention, the change of the designed protection value, an increase in the number of inverter and DC/DC booster,shall be taken.