电压源激励下表贴式永磁同步电机退磁故障建模与分析  

Modeling and Analysis of Demagnetization Fault in Surface Mounted Permanent Magnet Synchronous Motors with Voltage Source Excitation

作　　者：史涔溦[1,2] 彭琳 张振 史婷娜 Shi Cenwei;Peng Lin;Zhang Zhen;Shi Tingna(College of Electrical Engineering Zhejiang University,Hangzhou 310027 China;Zhejiang University Advanced Electrical Equipment Innovation Center,Hangzhou 311107 China)

机构地区：[1]浙江大学电气工程学院,杭州310027 [2]浙江大学先进电气装备创新中心,杭州311107

出　　处：《电工技术学报》2025年第8期2430-2440,共11页Transactions of China Electrotechnical Society

基　　金：国家重点研发计划(2022YFB2502603);浙江省自然科学基金(LQ22E070008)资助项目。

摘　　要：永磁同步电机退磁故障会降低电机的输出性能和负载能力,严重影响电机的使用寿命。建立准确的故障电机解析模型,进行快速电磁性能分析,获得故障情况下的电流、转矩等运行数据,有利于对退磁故障进行早期预测和诊断。该文针对永磁同步电机局部退磁故障,引入一个表示退磁区域空间角度的参数,推导了剩余磁化强度径向分量和切向分量的傅里叶系数,从而建立了永磁体局部退磁情况下的电机解析模型。在此基础上,针对实际应用中控制系统的电路接口,提出一种以磁链作为中间变量、由电压源逆变器驱动的解析模型,并将该模型应用到矢量控制系统中实现联合仿真,计算了电机的定子磁链、电流和转矩,经Ansys/Simplorer时步有限元模型和实验验证了该模型的准确性和有效性。相较于时步有限元法,该文提出的解析模型-控制电路联合仿真大幅缩短了计算时间,提高了运算效率。The demagnetization fault of permanent magnet synchronous motors(PMSM)reduces output performance and load capacity,seriously affecting the motor’s service life.Establishing an accurate fault motor analytical model,conducting rapid electromagnetic performance analysis,and obtaining operational data such as current and torque under fault conditions are beneficial for early prediction and diagnosis of demagnetization faults.A parameter D is introduced for the partial demagnetization fault of the surface-mounted PMSM prototype,representing the spatial angle of the demagnetized region,defined as the ratio of the spatial angle occupied by the demagnetized region to that of one pole arc.The radial and tangential component equations of the residual magnetization Fourier coefficients as a function of parameter D are derived,which reflect the influence of the spatial angle of the demagnetized region on the magnitude and the waveform of the residual magnetization.An analytical model of PMSM under partial demagnetization is established.In addition,regarding the control system’s circuit interface in practical applications,an analytical model of demagnetization faults in a PMSM driven by a voltage source inverter with magnetic flux linkage as the intermediate variable is established.This model is applied to the vector control circuit.Thus,a co-simulation model combining the analytical model and the control circuit is created.The load performance of the prototype is calculated under normal conditions and partial demagnetization using the co-simulation model.Compared with the simulation results from the Ansys/Simplorer time-stepping finite element method and the measured results from the prototype on the experimental platform,the conclusions are as follows.(1)The proposed partial demagnetization analytical model reflects the influence of the demagnetized region on the magnitude and the waveform of the residual magnetization.This model is more consistent with actual conditions than the method of equating partial demagnetizati

关 键 词：永磁同步电机 退磁故障 解析建模 

分 类 号：TM351[电气工程—电机]