Electric Motor Design and Analysis
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Abstract
Abstract
To meet the demanding performance requirements of electric vehicle (EV) traction motors, this paper proposes a novel combined-pole permanent magnet synchronous motor (PMSM) with magnetic barriers. The flux paths are investigated to compute air-gap magnetic flux density distributions under different main magnetic circuits, followed by Fourier decomposition. Analytical expressions for air-gap flux density, output torque, and cogging torque are derived, identifying key rotor structural parameters and their variation ranges. With optimization objectives including air-gap flux distortion rate, cogging torque, output torque, and torque ripple, a hierarchical multi-objective optimization strategy based on comprehensive sensitivity analysis is proposed. High-sensitivity parameters—tangential parameters (PM) width/thickness and V-shaped PM width/angle—are optimized via evolutionary algorithms. Results demonstrate increased output torque (6.64%) and reduced cogging torque (29.7%).
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@article{Hu2026Optimized,
title = {Optimized design and analysis of a novel combined-pole PMSM with magnetic barriers for electric vehicles},
author = {Wenjing Hu and Geng Huihui and Jiao Wenjie and Yixin Liu and Wang Junfeng and Yu Qi and Zhou Xin},
journal = {International Journal of Applied Electromagnetics and Mechanics},
year = {2026},
doi = {10.1177/13835416261490471},
url = {https://doi.org/10.1177/13835416261490471}
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