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

Abstract

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

CLC Number:

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

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