三相四开关有源电力滤波器故障诊断研究

Study on fault diagnosis of three-phase four-switch active power filters

为解决三相四开关有源电力滤波器系统中IGBT开路故障诊断问题,提出了一种基于电压检测的IGBT开路故障诊断方法。该方法只需采集一个线电压信号,再结合系统控制器已经检测出的电流和IGBT开关信号,便可快速准确地诊断出故障并能确定故障位置。该方法适用于单管和多管的开路故障诊断。仿真和实验结果验证了该方法的有效性和可靠性。

In order to solve problem of fault diagnosis of IGBT open-circuit of three-phase four-switch active power filter system,a fault diagnosis method of IGBT open-circuit based on voltage detection was put forward.This method only need to sample a line voltage signal,and combines with current and IGBT switching signals detected by system controllers,then it can quickly and accurately diagnose failure and determine the fault location.Meanwhile,the diagnosis method is suitable for IGBT open-circuit fault diagnosis of single tube and multi-tube.The simulation and experimental results verify the validity and reliability of the diagnosis method.