考虑偏心影响的不同槽极配合外转子永磁同步电机电磁噪声对比分析

doi:10.19784/j.cnki.issn1672-0172.2025.03.006

家电科技 ›› 2025, Vol. 0 ›› Issue (3): 40-46.doi: 10.19784/j.cnki.issn1672-0172.2025.03.006

考虑偏心影响的不同槽极配合外转子永磁同步电机电磁噪声对比分析

张树荣¹, 王强¹, 窦本和¹, 杨成涛¹, 王亚玮², 袁禹杰²

1.小米武汉科技有限公司湖北武汉 430075;
2.华中科技大学湖北武汉 430074

发布日期:2025-08-19
通讯作者: 袁禹杰,E-mail：yujieyuan@hust.edu.cn。
作者简介:张树荣,硕士学位。研究方向：洗衣机设计开发。地址：武汉东湖新技术开发区九峰一路66号1层006号（自贸区武汉片区）小米武汉科技有限公司。E-mail：zhangshurong@xiaomi.com。

Comparative analysis of electromagnetic noise of external rotor permanent magnet synchronous motors with different slot-pole combinations considering eccentricity effect

ZHANG Shurong¹, WANG Qiang¹, DOU Benhe¹, YANG Chengtao¹, WANG Yawei², YUAN Yujie²

1. Xiaomi Wuhan Technology Co., Ltd. Wuhan 430075;
2. Huazhong University of Science and Technology Wuhan 430074

Published:2025-08-19

摘要/Abstract

摘要： 针对洗衣机用直驱外转子永磁同步电机在脱水工况下的电磁噪声问题,研究了不同槽极配合（包括36槽40极、36槽42极、36槽48极）下的电磁噪声性能,尤其关注偏心故障对于电机电磁噪声性能的影响。首先基于麦克斯韦应力张量法提取了电机的径向电磁力波,并采用二维傅里叶分解对电机各阶次径向力波进行对比分析。其次,采用模态计算与模态叠加法对不同槽极配合电机产生的电磁噪声进行提取分析。最终研究表明,在无偏心故障下,电机主谐波绕组系数越小,谐波含量越少,其电磁噪声越低,但效率也会随之降低;发生偏心故障时,电机槽极数最小公倍数越大,其偏心下径向力波增幅越弱,抗偏心能力越强。

关键词: 直驱外转子永磁同步电机, 偏心故障, 电磁噪声, 槽极配合

Abstract: Investigates the electromagnetic noise performance of different slot-pole combinations (including 36-slot/40-pole, 36-slot/42-pole, and 36-slot/48-pole) in direct-drive outer-rotor permanent magnet synchronous motors (PMSMs) under dehydration conditions, with a particular focus on the impact of eccentricity faults on electromagnetic noise. The radial electromagnetic force waves are analyzed using the Maxwell stress tensor method and 2D Fourier decomposition. Additionally, modal analysis and modal superposition are employed to evaluate the characteristics of electromagnetic noise. The results indicate that under healthy (non-eccentric) conditions, a lower fundamental winding factor corresponds to reduced harmonic content, leading to lower electromagnetic noise and efficiency. Under eccentricity faults, the slot-pole combination with the most significant least common multiple (LCM) demonstrates the best eccentricity tolerance.

Key words: Direct-drive outer rotor permanent magnet synchronous motor, Eccentricity fault, Electromagnetic noise, Slot-pole combination

中图分类号:

张树荣, 王强, 窦本和, 杨成涛, 王亚玮, 袁禹杰. 考虑偏心影响的不同槽极配合外转子永磁同步电机电磁噪声对比分析[J]. 家电科技, 2025, 0(3): 40-46.

ZHANG Shurong, WANG Qiang, DOU Benhe, YANG Chengtao, WANG Yawei, YUAN Yujie. Comparative analysis of electromagnetic noise of external rotor permanent magnet synchronous motors with different slot-pole combinations considering eccentricity effect[J]. Journal of Appliance Science & Technology, 2025, 0(3): 40-46.

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考虑偏心影响的不同槽极配合外转子永磁同步电机电磁噪声对比分析

Comparative analysis of electromagnetic noise of external rotor permanent magnet synchronous motors with different slot-pole combinations considering eccentricity effect

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