轴向磁场永磁同步电机耦合故障特征分析  

Analysis of Coupling Fault Characteristics of Axial Flux Permanent Magnet Synchronous Motor

作　　者：兰晓阳 邓明星[1] 许小伟[1] 王亚玮 马季旻 LAN Xiaoyang;DENG Mingxing;XU Xiaowei;WANG Yawei;MA Jimin(School of Automotive and Traffic Engineering,Wuhan University of Science and Technology,Wuhan 430065,China;School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Intelligent Power System Co.,Ltd.,Wuhan 430058,China)

机构地区：[1]武汉科技大学汽车与交通工程学院,湖北武汉430065 [2]华中科技大学电气与电子工程学院,湖北武汉430074 [3]智新科技股份有限公司,湖北武汉430058

出　　处：《华北电力大学学报（自然科学版）》2024年第5期85-92,共8页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51975426);湖北省重点研发计划项目(2021BAA018).

摘　　要：轴向磁场永磁同步电机在潮湿、高温和振动的环境长时间运转,容易出现匝间短路和永磁体退磁耦合故障。为了实现对耦合故障产生的信号进行特征分析。首先从电机工作原理入手,建立了电机三维有限元模型,并通过对比实验数据和仿真结果,确定了所建电机模型和实际电机相符合。然后结合simplorer实现了有限元模型对匝间短路故障、永磁体退磁故障和耦合故障的模拟。最后,对比了不同故障状态下电机模型的电磁转矩、感应电势和故障相电流等特征量,并分析了特征量各阶次谐波含量的变化。研究结果确定了有效区分单一匝间短路故障、单一永磁体退磁故障和耦合故障的特征量分别为感应电势分数次谐波含量和故障相电流出现的周期为极对数的电流脉动,为该类电机故障特征分析提供一定的参考依据。Axial Flux permanent magnet synchronous motors operated in humid,high temperature and vibration environments for long periods of time are prone to turn-to-turn short circuits and permanent magnet demagnetization coupling faults.This paper is a feature analysis of the signals generated by coupling faults.First,we established a three-dimensional finite element model of the motor starting from the working principle of the motor,and determined that the proposed motor model is compatible with the actual motor by comparing the experimental data and simulation results.Then,we implemented simulations of turn-to-turn short-circuit faults,permanent magnet demagnetization faults and coupling faults in combination with simplorer.Finally,we compared the characteristic quantities such as electromagnetic torque,induced potential and fault phase current of the motor model under different fault states,and analyzed the variation of the harmonic content of each order of the characteristic quantities.The results identify the characteristic quantities that effectively distinguish between single turn-to-turn short-circuit fault,single permanent magnet demagnetization fault and coupling fault as the fractional harmonic content of induced potential and the current pulsation with polar logarithmic period of the fault phase current respectively,which provide some reference basis for the fault characterization of this type of motor.

关 键 词：轴向磁场永磁同步电机 特征分析 匝间短路故障 永磁体退磁故障 耦合故障 

分 类 号：TM341[电气工程—电机]