广州地铁A7型车辅助逆变器并网异常故障分析与处理

Analysis and Treatment of Abnormal Combined to the Gridfault of Auxiliary Inverter for Guangzhou Metro A7 Vehicle

针对广州地铁A7型车正线运行过程中出现的辅助逆变器并网异常问题,通过对列车故障现象以及系统日志文件的分析,采用反向论证法排查电路控制系统,得出并网异常故障的原因及提出地铁列车控制电路系统的相关调试建议。

Aiming at the abnormal grid connection problem of auxiliary inverter in the main line operation of Guangzhou Metro A7 car, through the analysis of train fault phenomenon and system log file, and using the reverse demonstration method to check the circuit control system, the causes of abnormal grid connection fault were obtained and the relevant debugging suggestions of metro train control circuit system were put forward.