Shaping of the Air Gap in a V-Typed IPMSM for Compressed-Air System Applications

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Abstract
The shaping of the air-gap of a V-typed fractional slot concentrated windings interior permanent magnet synchronous machines (IPMSM) is investigated for compressed-air systems (CAS) applications in this paper. The harmonics of no-load air-gap density, average torque, torque ripple, and iron losses are studied by the finite element analysis (FEA). The results show that the air-gap shaping of V-typed IPMSM can be effectively used to reduce the torque ripple and stator core loss. It is because that the low order harmonics of air-gap flux density can be reduced with the little decrease of the average torque. The proposed air-gap shaping methods have the advantages of simple design and simple manufacture. A V-typed IPMSM with air-gap shaping is prototyped to verify the correctness of the analysis results.
Funding Information
  • National Natral Science Foundation of China (51807090)
  • Aeronautical Science Foundation of China (2018ZC09002, 20182852)
  • China Postdoctoral Science Foundation (2019M661827)
  • Natural Science Foundation of Jiangsu Province (BK20180428)

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