基于齿槽效应的高速永磁电机转子涡流损耗解析计算  

Analytical Calculation of Rotor Eddy Current Losses in High Speed Permanent Magnet Machines Accounting for Influence of Slot Opening

作　　者：孙权贵 邓智泉[1] 张忠明 Sun Quangui;Deng Zhiquan;Zhang Zhongming(Department of Electrical Engineering,College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106 China)

机构地区：[1]南京航空航天大学自动化学院电气工程系,南京211106

出　　处：《电工技术学报》2018年第9期1994-2004,共11页Transactions of China Electrotechnical Society

基　　金：江苏省普通高校研究生科研创新计划项目(SJLX16_0099);中央高校基本科研业务费专项资金资助

摘　　要：针对齿槽效应引起的高速永磁电机转子涡流损耗,提出精确解析计算模型。该解析计算模型考虑包括槽和槽口在内的五个子域,通过在各个子域中建立、求解磁矢位方程以及借助子域间的边界条件对模型进行推导,同时考虑保护套和永磁体产生的涡流反应。基于建立的解析模型,能够计算出转子各部分的涡流损耗,并能够通过解析模型获得槽开口宽度、保护套材料和保护套厚度与转子涡流损耗之间的影响规律。将解析模型的计算结果与有限元结果进行对比,并进行实验测试,验证了转子涡流损耗解析模型的正确性。An accurate analytical model is proposed to calculate the rotor eddy current losses resulted from the slotting effect in high speed permanent magnet(PM)machines.The analytical model accounts for five subdomains including slot and slot-opening.By establishing and solving the vector potential equations in different subdomains and considering boundary conditions between subdomains,the analytical model can be derived with account of the eddy current reaction in retaining sleeve and PM.Based on the analytical model,eddy current loss in retaining sleeve and PM can be calculated.The influence of slot-opening to slot-pitch ratio,retaining sleeve materials and retaining sleeve thickness on rotor eddy current losses is investigated.Comparing with the results calculated by finite element method(FEM)and test,it validates that the analytical model is correct.

关 键 词：齿槽效应 转子涡流损耗 解析模型 涡流反应 

分 类 号：TM351[电气工程—电机]