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<p>This paper proposes the use of axial flux permanent magnet (AFPM), characterized by high power density, for application in electric vehicle (EV) drive systems. The material properties of soft magnetic materials (SMC) are crucial for power density improvement. In this paper, the magnetic properties of SMC and 1J22 materials are tested and analyzed. A dual-stator single-rotor axial flux motor with SMC-IJ22 splicing structure is designed based on the characteristics of SMC and 1J22 silicon steel. Two splicing structures are established to analyze and compare the differences between the performances. It is concluded that the hollow tooth-shoe compensation structure can reduce the iron loss on the basis of ensuring the performance. In addition, NSGA-II combined with neural network is used to accelerate the calculation. The optimized tooth-shoe structure weakens the torque pulsation. Finally the paper verifies the theoretical design of the hollow splicing structure motor through prototype experiments.</p>

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Optimized Design of Axial Flux Motor Based on SMC Tooth-Shoe Compensation Structure

  • 期刊论文

  • 发表日期：

    2025年9月26日

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  • Xiangjian Zhang,
  • Suoguo Hui,
  • Jiaqiang Li,
  • Ruilin Pei

摘要

This paper proposes the use of axial flux permanent magnet (AFPM), characterized by high power density, for application in electric vehicle (EV) drive systems. The material properties of soft magnetic materials (SMC) are crucial for power density improvement. In this paper, the magnetic properties of SMC and 1J22 materials are tested and analyzed. A dual-stator single-rotor axial flux motor with SMC-IJ22 splicing structure is designed based on the characteristics of SMC and 1J22 silicon steel. Two splicing structures are established to analyze and compare the differences between the performances. It is concluded that the hollow tooth-shoe compensation structure can reduce the iron loss on the basis of ensuring the performance. In addition, NSGA-II combined with neural network is used to accelerate the calculation. The optimized tooth-shoe structure weakens the torque pulsation. Finally the paper verifies the theoretical design of the hollow splicing structure motor through prototype experiments.