Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Design and analysis of mechanical flux-weakening device of axial flux permanent magnet machines

  • Wang, Shaopeng (State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Electrical Engineering, Hebei University of Technology) ;
  • Lu, Jiawei (Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd.) ;
  • Li, Bin (State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Electrical Engineering, Hebei University of Technology) ;
  • Liu, Chengcheng (State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Electrical Engineering, Hebei University of Technology) ;
  • Wang, Youhua (State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Electrical Engineering, Hebei University of Technology) ;
  • Lei, Gang (School of Electrical and Data Engineering, University of Technology) ;
  • Guo, Youguang (School of Electrical and Data Engineering, University of Technology) ;
  • Zhu, Jianguo (School of Electrical and Information Engineering, University of Sydney)
  • Received : 2021.10.08
  • Accepted : 2022.01.17
  • Published : 2022.04.20
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Abstract

Due to the low inductance of an axial flux permanent magnet machine (AFPMM), the constant power speed regulation range is small. A new mechanical flux-weakening method for single-rotor single-stator AFPMMs is proposed in this paper. By installing a mechanical flux-weakening device on one side of the stator and rotating it certain angle, the speed regulation of the flux-weakening can be realized. The device is simple in structure, easy to operate, and can be operated in the process of machine operation. The validity of the device is verified by applying it to a machine. Finite-element software is used to calculate and analyze the performances of two machines with the device.

Keywords

Acknowledgement

This study was funded by Chengcheng Liu (Grant no. E2019202220), and Youhua Wang (Grant no. 51877065).

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