Effect of Multi-size Magnetic Powder Gradation on Magnetic Properties of Novel Composite Magnetic Materials for HSPMSM

Jinyu Yao, Yue Zhang, Huijun Wang, Fengge Zhang, Chris Gerada

Research output: Journal PublicationArticlepeer-review

Abstract

The ordinary high-speed permanent magnet synchronous machines (HSPMSM) have the problems of high rotor temperature rise. In order to solve these problems, a novel composite rotor HSPMSM (NCR-HSPMSM) is proposed in this paper. The novel composite rotor includes a shaft, sintered permanent magnet, novel composite magnetic materials and carbon fiber sleeve. The novel composite magnetic materials are composed of magnetic powder, epoxy and carbon fiber. The rotor eddy current loss is caused by high-frequency harmonics. Utilize the low conductivity characteristics of novel composite magnetic materials, the rotor eddy current loss can be effectively reduced. In addition, the magnetic properties of novel composite magnetic materials are improved by multi-size magnetic powder gradation. The proposed sandwich packing model of the novel magnetic materials is used to determine the minimum magnetic powder size ratio. And the effect of multi-size magnetic powder gradation on magnetic properties of novel composite magnetic materials is analyzed by particle flow code (PFC) simulation software, and the electromagnetic analysis of NCR-HSPMSM is carried out by the finite element method (FEM). Finally, the accuracy of the packing model is verified by the experimental results.

Original languageEnglish
JournalIEEE Transactions on Transportation Electrification
DOIs
Publication statusAccepted/In press - 2022
Externally publishedYes

Keywords

  • carbon fiber
  • Composite materials
  • high speed
  • Magnetic analysis
  • Magnetic domains
  • Magnetic films
  • magnetic powder
  • Magnetic properties
  • permanent magnet synchronous machine
  • Permanent magnets
  • Powders
  • Rotors

ASJC Scopus subject areas

  • Automotive Engineering
  • Transportation
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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