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A Novel Dual-Permanent-Magnet-Excited Machine with Flux Strengthening Effect for Low-Speed Large-Torque Applications

Author

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  • Yujun Shi

    (Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
    Shenzhen Key Laboratory of Electric Direct Drive Technology, Shenzhen 518055, China)

  • Linni Jian

    (Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
    Shenzhen Key Laboratory of Electric Direct Drive Technology, Shenzhen 518055, China)

Abstract

This paper proposes a novel dual-permanent-magnet-excited (DPME) machine. It employs two sets of permanent magnets (PMs). One is on the rotor, the other is on the stator with PM arrays. When compared with the existing DPME machines, not all of the PMs are located in the slots formed by the iron teeth. Specifically, the radially magnetized PMs in the arrays are located under the short iron teeth, while the tangentially magnetized PMs are located in the slots formed by the long stator iron teeth and the radially magnetized PMs. Each long stator iron tooth is sandwiched by two tangentially magnetized PMs with opposite directions, thus resulting in the flux strengthening effect. The simulation analysis indicates that the proposed machine can offer large back EMF with low THD and large torque density with low torque ripple when compared with Machine I from a literature. Meanwhile, by comparison, the proposed machine has great potential in improving the power factor and efficiency.

Suggested Citation

  • Yujun Shi & Linni Jian, 2018. "A Novel Dual-Permanent-Magnet-Excited Machine with Flux Strengthening Effect for Low-Speed Large-Torque Applications," Energies, MDPI, vol. 11(1), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:1:p:153-:d:125917
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    References listed on IDEAS

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    Cited by:

    1. Xiaodong Zhang & Xing Zhao & Shuangxia Niu, 2019. "A Novel Dual-Structure Parallel Hybrid Excitation Machine for Electric Vehicle Propulsion," Energies, MDPI, vol. 12(3), pages 1-11, January.
    2. Wenjie Wu & Liang Xu & Bin Liu, 2022. "Design, Analysis, and Optimization of Permanent Magnet Vernier Machines Considering Rotor Losses," Energies, MDPI, vol. 15(4), pages 1-15, February.
    3. Mei Kang & Liang Xu & Jinghua Ji & Xuhui Zhu, 2022. "Design and Analysis of a High Torque Density Hybrid Permanent Magnet Excited Vernier Machine," Energies, MDPI, vol. 15(5), pages 1-16, February.
    4. Yunyun Chen & Yu Ding & Jiahong Zhuang & Xiaoyong Zhu, 2018. "Multi-Objective Optimization Design and Multi-Physics Analysis a Double-Stator Permanent-Magnet Doubly Salient Machine," Energies, MDPI, vol. 11(8), pages 1-15, August.
    5. Guobin Peng & Jin Wei & Yujun Shi & Ziyun Shao & Linni Jian, 2018. "A Novel Transverse Flux Permanent Magnet Disk Wind Power Generator with H-Shaped Stator Cores," Energies, MDPI, vol. 11(4), pages 1-19, March.
    6. Liang Xu & Wenxiang Zhao & Guohai Liu, 2019. "Improved SVPWM Fault-Tolerant Control Strategy for Five-Phase Permanent-Magnet Motor," Energies, MDPI, vol. 12(24), pages 1-15, December.

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