永磁同步电机匝间短路故障建模及仿真分析

Modeling and simulation analysis of Permanent Magnet Synchronous Motors with interturn short circuit fault

永磁同步电机(PMSM)由于体积小、性能好、结构简单、输出转矩大的优点,在生活中大量应用,特别是在电动车中。电机可靠安全的运行,不但影响到产品的质量,而且还关系到人们的生命安全,对PMSM定子匝间短路故障建模及仿真分析是对故障诊断的第一步。本文在abc坐标系下建立了面装式永磁同步电机(SPMSM)定子匝间短路故障的详细数学模型,根据故障所建立的数学模型在Matlab/Simulink下搭建仿真模型以可视化故障特征,并从时频域进行了分析,为SPMSM的故障诊断提供可靠的依据。

Permanent Magnet Synchronous Motor is widely used in life,especially in electric vehicles,because of its small size,good performance,simple structure and large output torque.The reliable and safe operation of motors not only affects the quality of products,but also affects the safety of people’s lives.Modeling and simulation analysis of PMSM stator interturn short circuit fault(SISCF)is the first step of fault diagnosis.In this paper,a detailed mathematical model of SISCF of surface mounted permanent magnet synchronous motor(SPMSM)is established in abc coordinate system.According to the mathematical model established by the fault,a simulation model is built under Matlab/Simulink to visualize the fault characteristics,and analyses are made in timefrequency domain to provide reliable basis for SPMSM fault diagnosis.