永磁同步电机(PMSM)电磁动态特性分析对电力传动系统运行与故障诊断策略研究具有重要作用。针对多相PMSM磁链的动态特性进行分析，推导了电感与转子位置关系，基于五相PMSM定子磁链的动态数学模型，采用MATLAB软件对五相PMSM在不同缺相故障下的磁链、电感特性进行建模和仿真，并对仿真结果进行了比较分析。研究结果可以为PMSM缺相故障诊断和容错控制提供一定的理论参考。

Analysis of the electromagnetic dynamic characteristics of permanent magnet synchronous motors (PMSMs) plays an important role in the research of power transmission system operation and fault diagnosis strategies. The dynamic characteristics of the flux linkage of multi-phase PMSMs are analyzed, and the relation between inductance and rotor position is deduced. Based on the dynamic mathematical model of stator flux linkage of five-phase PMSM, the modeling and simulation of flux linkage and inductance characteristics of five-phase PMSMs under different phase failures are carried out by using MATLAB software. The simulation results are compared and analyzed, and the results can provide theoretical reference for phase failure diagnosis and fault-tolerance control of PMSMs.

国家自然科学基金项目（51307047）；湖北省自然科学基金项目(2019CFC893)；湖北省技术创新专项重大项目（2016AAA051）