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Effect of Stator Slots on Electromagnetic Performance of a High-Voltage Line-Start Permanent Magnet Synchronous Motor

Author

Listed:
  • Dongming Li

    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China)

  • Guihong Feng

    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China)

  • Wei Li

    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China)

  • Bingyi Zhang

    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China)

  • Jiaxu Zhang

    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China)

Abstract

It is well known that the use of slotted stators in motors produces undesirable effects, such as magnetic flux distortion, additional losses, ripple torque, and vibration. However, a large number of studies pay more attention to stator slots and magnetic slot wedges (MSW) in asynchronous motors and permanent magnet motors, ignoring the same problems in large capacity high voltage line start permanent magnet synchronous motors (HVLSPMSM). In order to disclose the effect of the stator slot on HVLSPMSMs, the no-load air gap magnetic field distribution and stator leakage reactance are studied. Meanwhile, the differences in the starting torque, pull-in torque and pull-out torque of four slot models are compared, and the starting performance is more affected by stator slot. In practical manufacturing, the application of MSWs is the main way to change the electromagnetic performance of stator slots, so the influence of MSWs under different permeabilities on the performance of HVLSPMSMs is investigated. Finally, the effect of a stator slot on the motor starting performance and the rated performance are verified by prototypes and experimental tests, which provide a reference for the application of MSWs in HVLSPMSMs.

Suggested Citation

  • Dongming Li & Guihong Feng & Wei Li & Bingyi Zhang & Jiaxu Zhang, 2022. "Effect of Stator Slots on Electromagnetic Performance of a High-Voltage Line-Start Permanent Magnet Synchronous Motor," Energies, MDPI, vol. 15(9), pages 1-18, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:3358-:d:808771
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    References listed on IDEAS

    as
    1. Lucia Frosini & Marco Pastura, 2020. "Analysis and Design of Innovative Magnetic Wedges for High Efficiency Permanent Magnet Synchronous Machines," Energies, MDPI, vol. 13(1), pages 1-21, January.
    2. Mariusz Baranski & Wojciech Szelag & Wieslaw Lyskawinski, 2020. "Analysis of the Partial Demagnetization Process of Magnets in a Line Start Permanent Magnet Synchronous Motor," Energies, MDPI, vol. 13(21), pages 1-20, October.
    3. Zhaobin Cao & Weili Li & Jinyang Li & Xiaochen Zhang & Dong Li & Meiwei Zhang, 2017. "Research on the Temperature Field of High-Voltage High Power Line Start Permanent Magnet Synchronous Machines with Different Rotor Cage Structure," Energies, MDPI, vol. 10(11), pages 1-14, November.
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