地铁列车负载故障下的辅助逆变器失效频谱特性分析

摘要

地铁列车的辅助逆变器运行多年后存在各种老化状况,辅助逆变器系统本身的输出特性变差,较易引起列车故障.针对这一现状,从频谱分析的角度入手,采用MATLAB/powergui及傅里叶分析法评估辅助逆变器的工作状态.研究了大功率负载故障引起的辅助逆变器失效以及在此情况下的输出频谱特性.仿真试验数据在上海轨道交通1号线列车大修过程中得到验证.该方法对于列车电气设备的日常检修和大修中的状态评估有着一定的参考价值.%There is a serious aging condition of auxiliary inverter after years use, such as the bad output characteristics and frequent train fault. For this reason, by using MATLAB/pow-ergui module and Fourier Transform analysis, the auxiliary inverter failures caused by high power load fault carrying on spectral characteristic are assessed. This research is important for the status assessment of routine maintenance and overhaul of train electrical equipment, and the simulation data have been verified by the overhaul of Shanghai metro Line 1.