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Design and Analysis of Outer Rotor Permanent-Magnet Vernier Machines with Overhang Structure for In-Wheel Direct-Drive Application

Author

Listed:
  • Dong Yu

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Xiaoyan Huang

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Lijian Wu

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Youtong Fang

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract

This paper presents a novel outer rotor permanent-magnet vernier machine (PMVM) for in-wheel direct-drive application. The overhang structures of the rotor and flux modulation pole (FMP) are introduced. The soft magnetic composite (SMC) was adopted in the FMP overhang to allow more axial flux. The 3-D finite element analysis (FEA) was carried out to prove that the proposed machine can effectively utilize the end winding space to enhance the air-gap flux density. Hence the PMVM can offer 27.3% and 14.5% higher torque density than the conventional machine with no overhang structure and the machine with only rotor overhang structure, respectively. Nevertheless, the efficiency of the proposed machine is slightly lower than the conventional ones due to the extra losses from the overhang structures.

Suggested Citation

  • Dong Yu & Xiaoyan Huang & Lijian Wu & Youtong Fang, 2019. "Design and Analysis of Outer Rotor Permanent-Magnet Vernier Machines with Overhang Structure for In-Wheel Direct-Drive Application," Energies, MDPI, vol. 12(7), pages 1-9, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:7:p:1238-:d:218792
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    References listed on IDEAS

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    1. Chenyu Gu & Wenxiang Zhao & Bufeng Zhang, 2016. "Simplified Minimum Copper Loss Remedial Control of a Five-Phase Fault-Tolerant Permanent-Magnet Vernier Machine under Short-Circuit Fault," Energies, MDPI, vol. 9(11), pages 1-15, October.
    2. Daekyu Jang & Junghwan Chang, 2017. "A Novel Design Method for the Geometric Shapes of Flux Modulation Poles in the Surface-Mounted Permanent Magnet Vernier Machines," Energies, MDPI, vol. 10(10), pages 1-16, October.
    3. Hui Yang & Heyun Lin & Zi-Qiang Zhu & Shuhua Fang & Yunkai Huang, 2016. "A Dual-Consequent-Pole Vernier Memory Machine," Energies, MDPI, vol. 9(3), pages 1-15, February.
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    Citations

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    Cited by:

    1. Phuong Thi Luu & Ji-Young Lee & Ji-Heon Lee & Byung-Chul Woo, 2019. "Design and Analysis of a Permanent Magnet Synchronous Motor Considering Axial Asymmetric Position of Rotor to Stator," Energies, MDPI, vol. 12(24), pages 1-11, December.

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