地铁车辆辅助电源系统故障分析及对策

Analysis and Countermeasures of Auxiliary Power System Malfunction of Metro EMUs

针对地铁车辆辅助电源系统单台充电机模块接地短路,导致整车2台辅助逆变器停止工作的故障,从辅助电源系统的工作原理和控制逻辑分析原因,提出充电机断路器换型、软件优化等措施,解决故障隐患,保障列车安全稳定运行。

In response to the grounding short circuit fault of a single charger module in the auxiliary power supply system of subway vehicles,which caused the two auxiliary inverters of the entire vehicle to stop working,the reasons are analyzed from the working principle and control logic of the auxiliary power supply system.Measures such as ve⁃placing the circuit-breaker model of the charger and optimizing software are proposed to solve the hidden trouble and ensure the safe and stable operation of the train.