Study on Electromagnetic Performance of Skewed Permanent Magnet Axial Flux Permanent Magnet Synchronous Motor

IF 1.6 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrical Engineering & Technology Pub Date : 2024-08-17 DOI:10.1007/s42835-024-01987-5

Junhong Wang, Zengjin Xu, Zuoxia Xing, Yang Liu, Wei Ji

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Abstract

Axial flux motors have more advantages than radial flux motors in terms of volume, torque to inertia ratio, efficiency and power density. However, when using axial flux permanent magnet synchronous motor (AFPMSM) as hub motor for electric vehicles, their torque ripples it is a thorny problem that affects its development. It is a common method to reduce the torque ripple by weakening the cogging torque. This paper studies the impact of permanent magnet deflection on motor torque ripple, efficiency and other aspects in the absence of cogging torque, that is, no stator core. Finite element simulation results show that the permanent magnet deflection of 10° is the optimal deflection angle. Currently, the electromagnetic torque pulsation is smallest, the radial air gap magnetic density waveform is closest to the sine wave, the magnetic induction intensity is the largest, and the efficiency is highest. This research result provides an effective method for reducing torque ripple of in-wheel motors.

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倾斜永磁轴向磁通永磁同步电机电磁性能研究

与径向磁通电机相比，轴向磁通电机在体积、转矩惯性比、效率和功率密度等方面具有更多优势。然而，当使用轴向磁通永磁同步电机（AFPMSM）作为电动汽车的轮毂电机时，其转矩纹波是影响其发展的一个棘手问题。通过削弱齿槽转矩来减小转矩纹波是一种常用的方法。本文研究了在无齿槽转矩（即无定子铁芯）情况下，永磁体偏转对电机转矩纹波、效率等方面的影响。有限元仿真结果表明，永磁体偏转 10° 是最佳偏转角。目前，电磁转矩脉动最小，径向气隙磁密波形最接近正弦波，磁感应强度最大，效率最高。这一研究成果为减小轮内电机的转矩纹波提供了有效方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Electrical Engineering & Technology ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

4.00

自引率

15.80%

发文量

321

审稿时长

3.8 months

期刊介绍： ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies. The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.