What question did this study set out to answer?

This research aims to reduce cogging torque harmonics in permanent magnet synchronous machines (PMSMs) caused by nonideal airgap permeance.

May 17, 2026IET Electric Power ApplicationsOpen Access

Pole Number Selection Criterion for Cogging Torque Reduction of PMSMs Induced by Nonideal Airgap Permeance Harmonics

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Authors

DWDuo WuSoutheast University CZChao ZhangSoutheast University JDJinwen DuSoutheast University

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Implication

Randomized trial explores cogging torque reduction in permanent magnet synchronous machines, suggesting a new design criterion for optimal performance.

Key Points

This research aims to reduce cogging torque harmonics in permanent magnet synchronous machines (PMSMs) caused by nonideal airgap permeance.
Investigated the generation mechanism of cogging torque harmonics in PMSMs.
Proposed an optimal pole number selection criterion to minimize harmonics.
Verified the effectiveness through finite element simulation and experimental setups.
A smaller pole number resulted in lower amplitudes of cogging torque harmonics.
Three rotors (p=10, 14, 16) assembled with a 12-slot stator showed varying cogging torque levels that validated the method.

Cite This Study

Wu et al. (2026) studied this question.

synapsesocial.com/papers/6a095b5d7880e6d24efe1222 https://doi.org/10.1049/elp2.70190

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Implication

Randomized trial explores cogging torque reduction in permanent magnet synchronous machines, suggesting a new design criterion for optimal performance.

Pole Number Selection Criterion for Cogging Torque Reduction of PMSMs Induced by Nonideal Airgap Permeance Harmonics

Discussion

Member takes

Implication

Key Points

Cite This Study

Pole Number Selection Criterion for Cogging Torque Reduction of PMSMs Induced by Nonideal Airgap Permeance Harmonics

Discussion

Member takes

Implication

Key Points

Cite This Study

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