基于续电流的开关磁阻电机变换器故障诊断

摘要

Based on the analysis of the freewheeling current while several classical failures occur in the power converters in the switched reluctance motor(SRM) drive system,the simulation model of the system is established and a new kind of power converter is designed.Simulation and experimental results verify the effectiveness and practicability of the method.Compared with traditional plan of checking three phase electrical signal,this method has the advantage of simple structure and the great ability to confirm the failed component quickly and credibly.%基于对开关磁阻电机(SRM)驱动系统中的功率变换器典型故障时续电流逻辑状态分析,搭建了SRM的仿真模型,设计一款新型的功率变换器拓扑结构,实现了典型故障的在线诊断.仿真和实验验证了该方法的有效性和实用性.相比传统的三相电信号检测方案,该方法结构精简,可实现快速、可靠故障定位的优点.