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Influence of Stator MMF Harmonics on the Utilization of Reluctance Torque in Six-Phase PMA-SynRM with FSCW

Author

Listed:
  • Luming Cheng

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

  • Yi Sui

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

  • Ping Zheng

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

  • Zuosheng Yin

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

  • Chuanze Wang

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

Abstract

Although fractional-slot concentrated winding (FSCW) offers many significant advantages, such as short end-turn windings, high slot filling factor, and low cogging torque, it is frequently limited by excessive stator magnetomotive force (MMF) harmonics which will induce high eddy losses in the permanent magnets (PMs). What is more, in the literature, it can be observed that the reluctance torque of the salient-pole machine with FSCW is usually much lower than that obtained with integral slot winding. To explore the underlying reason why the reluctance torque in a salient machine with FSCW significantly decreases, a new six-phase FSCW with 24 slots and 10 poles, which can significantly reduce the undesirable stator MMF harmonics, is obtained by using the concept of stator shifting. Then, two permanent-magnet-assisted synchronous reluctance machines (PMA-SynRMs) with the proposed winding layout and conventional asymmetric 12-slot/10-pole six-phase winding layout are designed and simulated by the finite-element method (FEM). The reluctance torque, total torque, and d / q -axis inductances with different current phase angles are also compared under different loaded conditions. The results show that a reduction in stator MMF harmonics can indeed lead to a significant enhancement in reluctance torque under heavy loaded conditions, while the dominance will diminish under light loaded conditions.

Suggested Citation

  • Luming Cheng & Yi Sui & Ping Zheng & Zuosheng Yin & Chuanze Wang, 2018. "Influence of Stator MMF Harmonics on the Utilization of Reluctance Torque in Six-Phase PMA-SynRM with FSCW," Energies, MDPI, vol. 11(1), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:1:p:108-:d:125324
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    References listed on IDEAS

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    1. Ping Zheng & Fan Wu & Yu Lei & Yi Sui & Bin Yu, 2013. "Investigation of a Novel 24-Slot/14-Pole Six-Phase Fault-Tolerant Modular Permanent-Magnet In-Wheel Motor for Electric Vehicles," Energies, MDPI, vol. 6(10), pages 1-23, September.
    2. Ping Zheng & Fan Wu & Yi Sui & Pengfei Wang & Yu Lei & Haipeng Wang, 2012. "Harmonic Analysis and Fault-Tolerant Capability of a Semi-12-Phase Permanent-Magnet Synchronous Machine Used for EVs," Energies, MDPI, vol. 5(9), pages 1-22, September.
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    Cited by:

    1. Ziqiang Zhu & Shensheng Wang & Bo Shao & Luocheng Yan & Peilin Xu & Yuan Ren, 2021. "Advances in Dual-Three-Phase Permanent Magnet Synchronous Machines and Control Techniques," Energies, MDPI, vol. 14(22), pages 1-46, November.
    2. Hoyun Won & Yang-Ki Hong & Minyeong Choi & Jonathan Platt & Briana Bryant & Seungdeog Choi & Shuhui Li & Hwan-Sik Yoon & Timothy A. Haskew & Jongkook Lee & Taegyu Lee & Tae-Won Lim, 2022. "Novel Design of Six-Phase Spoke-Type Ferrite Permanent Magnet Motor for Electric Truck Application," Energies, MDPI, vol. 15(6), pages 1-21, March.
    3. Armin Dietz & Antonino Oscar Di Tommaso & Fabrizio Marignetti & Rosario Miceli & Claudio Nevoloso, 2020. "Enhanced Flexible Algorithm for the Optimization of Slot Filling Factors in Electrical Machines," Energies, MDPI, vol. 13(5), pages 1-21, February.

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