多磁极式永磁电机的故障机理与损耗分析  

Failure Mechanism and Loss Analysis for Multi-magnetic-pole Permanent Magnet Motors

作　　者：范辉[1] 陈艳羚[2] 谢卫[2] 汤天浩[2] Fan Hui;Chen Yanling;Xie Wei;Tang Tianhao(Shanghai Electrical Machinery Institute,Shanghai 201306,China;Shanghai Maritime University,Shanghai 201306,China)

机构地区：[1]上海电机学院,上海201306 [2]上海海事大学,上海201306

出　　处：《电气自动化》2018年第2期22-24,共3页Electrical Automation

基　　金：国家自然基金项目(61503242)资助

摘　　要：永磁体退磁是永磁电机的特有的常见故障,从故障机理的角度去分析其故障产生的原因,并使用Maxwell对电机进行损耗仿真,考虑改变电机尺寸参数,包括定子槽宽、气隙长度和永磁体宽度等因数对永磁体涡流损耗的变化情况,分析尺寸对永磁体涡流损耗的改变趋势,可通过降低损耗,提高效率,降低永磁体的温度,以防永磁体不可逆失磁。Demagnetization of permanent magnets is a specific common failure of the permanent magnet motor.Its failure causes were analyzed from the point of view of failure mechanism,and motor loss simulation was made by using Maxwell.Influence of motor dimension parameters(including stator slot width,air gap length and permanent magnet width)upon the eddy current loss of the permanent magnet was analyzed.Irreversible demagnetization of the permanent magnet could be prevented through loss decrease,efficiency improvement and decrease of the temperature of the permanent magnet.

关 键 词：永磁电机 故障机理 损耗分析 MAXWELL ANSYS仿真 

分 类 号：TM351[电气工程—电机] TM743