Optimal design of no-load airgap flux density of permanent magnet synchronous motor

被引：0
作者：
Xu, Yinglei [1 ]
Li, Qunzhan [1 ]
Wang, Tao [1 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2009年 / 44卷 / 04期
关键词：
Asymmetric airgap; Eccentricity; Permanent magnet synchronous motor; Waveform optimization;
D O I：
10.3969/j.issn.0258-2724.2009.04.007
中图分类号：
学科分类号：
摘要：
To improve the back-EMF (electromotive force) waveform of PMSM (permanent magnet synchronous motor), the waveform of no-load airgap flux density of radial V-shaped magnet configuration of PMSM was analyzed. The eccentricity airgap was got by changing the pole shoe's shape. Asymmetric airgap was used to improve the waveform of airgap magnetic field. The waveform of the airgap magnetic field and the harmonic content were analyzed with the finite element method under the eccentricity of 15.2, 20.2, 25.6, 35.6 and 50.6 mm to obtain the eccentricity-airgap flux filed curve and the optimal eccentricity. Numerical calculation and measured results of electromagnetic field show that through the optimal design of eccentricity, the back-EMF waveform of no load is close to sinusoidal distribution and the total harmonic distortion is 0.5%, as a result, the waveform of no-load airgap flux density gets improved.
引用
收藏
页码：513 / 516+540
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