Influence of rotor magnetic circuit structure on eddy current loss of high voltage line‐start permanent magnet synchronous motor,International Transactions on Electrical Energy Systems

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Influence of rotor magnetic circuit structure on eddy current loss of high voltage line‐start permanent magnet synchronous motor
International Transactions on Electrical Energy Systems ( IF 1.9 ) Pub Date : 2020-11-15 , DOI: 10.1002/2050-7038.12700
Houbin Song ₁ , Rongxin Wang ₁ , Aimin An ₁ , Hongbo Qiu ₂

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The structure of the rotor magnetic circuit has an obvious effect on the eddy current loss of the rotor of the high voltage line start permanent magnet synchronous motor. In this paper, a 10 kV to 1000 kW high voltage line start permanent magnet synchronous motor is taken as an example. The two‐dimensional electromagnetic field model of the motor with V‐shaped permanent magnet arrangement is established by using the finite element method. The no‐load back EMF and armature current of the motor are calculated, and the correctness of the model is verified. On this basis, this paper proposes a sector permanent magnet structure, compares the difference between the air gap flux density and the rotor eddy current loss of the two magnetic circuit structures, analyzes the advantages and disadvantages of the above magnetic circuit structure on the harmonic effect of the air gap flux density of the motor. The mechanism of the influence of different magnetic circuit structures on the eddy current loss of the rotor is revealed, which provides a reference for the design of a high voltage line start permanent magnet motor.

中文翻译：

转子磁路结构对高压线路启动永磁同步电动机涡流损耗的影响

转子磁路的结构对高压线路启动永磁同步电动机转子的涡流损耗有明显影响。本文以一个10 kV至1000 kW高压线路启动永磁同步电动机为例。采用有限元方法建立了带有V形永磁体的电动机的二维电磁场模型。计算出电机的空载反电动势和电枢电流，并验证了模型的正确性。在此基础上，提出了一种扇形永磁体结构，比较了两种磁路结构的气隙磁通密度与转子涡流损耗之间的差异，分析了上述磁路结构对电动机气隙磁通密度的谐波影响的优缺点。揭示了不同磁路结构对转子涡流损耗影响的机理，为高压线路启动永磁电动机的设计提供参考。

更新日期：2021-01-12

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