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<p>Aiming at the problems of low torque utilization and high cost of permanent magnet (PM) materials in conventional interior permanent magnet synchronous motor, a novel asymmetric IPMSM topology with high torque and low cost is proposed. By adjusting the PM and introducing an L-shaped flux barrier, the structure utilizes the magnetic field shifting effect to significantly enhance the torque output. Under the benchmark of reducing the use of PMs by 5%, three asymmetric structures are proposed and their output torques are compared. The performance of the L-shaped flux barrier is analyzed. The global parameters are optimized based on the multi-objective evolutionary algorithm, and the performance is verified by finite element simulation. The results show that compared with the conventional symmetrical structure, the maximum output torque of the asymmetric topology is increased by 5.79%, the volume of the PM is reduced by 5.05%, and the peak efficiency is increased from 96.85 to 97.40%, which is increased by 0.55%. The design improves the overall performance of the motor while reducing the cost, and has a good application prospect in various fields.</p>

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Analysis and Optimization of Electromagnetic Characteristics of Asymmetric V-Shaped Interior Permanent Magnet Synchronous Motor

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • Zhihong Wu,
  • Dongxiong Wang,
  • Yanxin Zhao,
  • Ju Zhang,
  • Xianju Yuan,
  • Baohua Wang

摘要

Aiming at the problems of low torque utilization and high cost of permanent magnet (PM) materials in conventional interior permanent magnet synchronous motor, a novel asymmetric IPMSM topology with high torque and low cost is proposed. By adjusting the PM and introducing an L-shaped flux barrier, the structure utilizes the magnetic field shifting effect to significantly enhance the torque output. Under the benchmark of reducing the use of PMs by 5%, three asymmetric structures are proposed and their output torques are compared. The performance of the L-shaped flux barrier is analyzed. The global parameters are optimized based on the multi-objective evolutionary algorithm, and the performance is verified by finite element simulation. The results show that compared with the conventional symmetrical structure, the maximum output torque of the asymmetric topology is increased by 5.79%, the volume of the PM is reduced by 5.05%, and the peak efficiency is increased from 96.85 to 97.40%, which is increased by 0.55%. The design improves the overall performance of the motor while reducing the cost, and has a good application prospect in various fields.