永磁同步电动机的非对称涡流损耗和温度分布

IF 4.2 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Industry Applications Pub Date : 2025-01-21 DOI:10.1109/TIA.2025.3532582

Yinzhao Zheng;Dawei Liang;Z. Q. Zhu;Jun Yan;Yanjian Zhou;Hailong Liu;Hai Xu

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引用次数: 0

摘要

本文首次研究了具有不同槽数/极数组合的表面贴装永磁同步电机（SPMSM）的非对称永磁涡流损耗和温度分布机理。利用基于有限元分析（FEA）的谐波恢复方法，评估和量化了电枢反应空间谐波对具有不同极数的 12 槽 SPMSM 的永磁涡流损耗和温度分布的贡献。结果表明，对于具有不同插槽/极数组合的 SPMSM，电枢反应空间谐波对大部分 PM 损耗都有影响。仅在电枢反作用力或永磁磁场作用下，永磁损耗在圆周方向上的平均分布与中心线对称，而电枢反作用力和永磁磁场之间的相互作用则导致永磁损耗的非对称分布。此外，当转子磁极数增加时，永磁磁极的最大损耗密度会从圆周中心向边缘移动。因此，通过三维热有限元法计算了永磁局部热点温度，结果显示了与损耗密度分布相同的趋势。最后，制造了两个原型，并进行了相应的电磁和热测试，以验证有限元模拟的有效性。

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Asymmetric PM Eddy Current Loss and Temperature Distributions of SPMSMs

This paper investigates the mechanism of asymmetric permanent magnet (PM) eddy current loss and temperature distributions of surface-mounted PM synchronous machines (SPMSMs) with different slot/pole number combinations for the first time. A finite element analysis (FEA) based harmonic restoration method is utilized to evaluate and quantify contributions of individual armature reaction spatial harmonics to PM eddy current loss and temperature distributions for 12-slot SPMSMs with different pole numbers. It shows that there is one dominant armature reaction spatial harmonic contributing to the majority of PM loss for each SPMSM with different slot/pole number combinations. The average PM loss distribution is symmetrical to the center line in circumferential direction with armature reaction or PM magnetic field only, while the interaction between the armature reaction and PM field causes the asymmetric PM loss distribution. Besides, the maximum loss density in one PM pole tends to move from the circumferential center to the edge when the rotor pole number increases. Consequently, the resultant PM local hotspot temperature has been calculated through 3-D thermal finite element method, which shows the same trend as loss density distribution. Finally, two prototypes are manufactured, and the corresponding electromagnetic and thermal tests are carried out to verify the validity of the FEA simulation.

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来源期刊

IEEE Transactions on Industry Applications 工程技术-工程：电子与电气

CiteScore

9.90

自引率

9.10%

发文量

747

审稿时长

3.3 months

期刊介绍： The scope of the IEEE Transactions on Industry Applications includes all scope items of the IEEE Industry Applications Society, that is, the advancement of the theory and practice of electrical and electronic engineering in the development, design, manufacture, and application of electrical systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; industry leadership in energy conservation and environmental, health, and safety issues; the creation of voluntary engineering standards and recommended practices; and the professional development of its membership.