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Design and Analysis of Coreless Axial Flux Permanent Magnet Machine with Novel Composite Structure Coils

Author

Listed:
  • Xiaoyuan Wang

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

  • Tianyuan Li

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

  • Xiaohong Cui

    (Suzhou Noah E-Bike Co., Ltd., Suzhou 215000, China)

  • Xiaoxiao Zhao

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

Abstract

In this paper, a type of novel composite structure coil applied in the coreless stator is proposed and studied to improve the output performance and efficiency of the axial flux permanent magnet (AFPM) machine. In which the effective conductor is changed to be wedge-shaped by the rolling technology so that the turns of coils and filling factor can be further increased, and the ends are kept in the cylinder with a larger diameter to reduce the DC copper loss. Meanwhile, the air region between the double rotors of the machine is also modified to be wedge-shaped, which fully matches the proposed coils and shortens the air gap length. The advantages of performance can be verified by the three-dimensional (3D) finite element analysis (FEA) and analytical method so that the output characteristics of no-load and load can be improved, and the DC copper loss and eddy current loss of coils can be reduced. The coreless AFPM machine finally performs a high efficiency of 95.34% according to these valuable optimizations.

Suggested Citation

  • Xiaoyuan Wang & Tianyuan Li & Xiaohong Cui & Xiaoxiao Zhao, 2022. "Design and Analysis of Coreless Axial Flux Permanent Magnet Machine with Novel Composite Structure Coils," Energies, MDPI, vol. 15(14), pages 1-14, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:5162-:d:864115
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    References listed on IDEAS

    as
    1. Xiaoyuan Wang & Huaidong Lu & Xiang Li, 2018. "Winding Design and Analysis for a Disc-Type Permanent-Magnet Synchronous Motor with a PCB Stator," Energies, MDPI, vol. 11(12), pages 1-15, December.
    2. Ji-Young Lee & Ji-Heon Lee & Tung Khanh Nguyen, 2021. "Axial-Flux Permanent-Magnet Generator Design for Hybrid Electric Propulsion Drone Applications," Energies, MDPI, vol. 14(24), pages 1-14, December.
    3. Changchuang Huang & Baoquan Kou & Xiaokun Zhao & Xu Niu & Lu Zhang, 2022. "Multi-Objective Optimization Design of a Stator Coreless Multidisc Axial Flux Permanent Magnet Motor," Energies, MDPI, vol. 15(13), pages 1-13, June.
    4. Wenqiang Wang & Shaoqi Zhou & Hongju Mi & Yadong Wen & Hua Liu & Guoping Zhang & Jianyong Guo, 2019. "Sensitivity Analysis and Optimal Design of a Stator Coreless Axial Flux Permanent Magnet Synchronous Generator," Sustainability, MDPI, vol. 11(5), pages 1-18, March.
    5. Omid Shariati & Ali Behnamfar & Ben Potter, 2022. "An Integrated Elitist Approach to the Design of Axial Flux Permanent Magnet Synchronous Wind Generators (AFPMWG)," Energies, MDPI, vol. 15(9), pages 1-17, April.
    6. Dong-Youn Shin & Min-Jae Jung & Kang-Been Lee & Ki-Doek Lee & Won-Ho Kim, 2022. "A Study on the Improvement of Torque Density of an Axial Slot-Less Flux Permanent Magnet Synchronous Motor for Collaborative Robot," Energies, MDPI, vol. 15(9), pages 1-14, May.
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