A Novel Stator Dual-PM Flux-Switching Machine with Improved Utilization of High-Order Harmonics and Reduced Flux Leakage

Jiahui Huang, Weinong Fu, Shuangxia Niu, Yanding Bi

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper proposes a novel stator dual-permanent magnet flux-switching (SDPM-FS) machine with enhanced torque density compared to the conventional flux-switching permanent-magnet (FSPM) machines. The SDPM-FS machine features a unique arrangement of PMs located on the stator tooth region. A set of radially magnetized PMs is added into the dummy slots, and the side teeth on the stator are removed to enhance the 4th-order harmonic of the stator PM excited magnetomotive (MMF). The utilization of 2 pole-pair working harmonic of air-gap flux density is significantly improved while the flux leakage of spoke-type PMs is simultaneously reduced. Consequently, the phase flux linkage increases, and the no-load phase back EMF is further enlarged. In this paper, the working principle of the proposed SDPM-FS machine is analytically introduced by using a simplified magnetomotive force (MMF)-permeance model. Subsequently, a non-dominated sorting genetic algorithm II (NSGA-II) is used to conduct the global optimization. Furthermore, the performance of the proposed SDPM-FS machine is comprehensively compared with a conventional multi-tooth FSPM machine using finite element analysis (FEA). The results demonstrate that the SDPM-FSM exhibits notable enhancements in torque density and efficiency.

Original languageEnglish
Title of host publication2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5114-5118
Number of pages5
ISBN (Electronic)9798350317589
DOIs
Publication statusPublished - 14 Dec 2023
Event26th International Conference on Electrical Machines and Systems, ICEMS 2023 - Zhuhai, China
Duration: 5 Nov 20238 Nov 2023

Publication series

Name2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023

Conference

Conference26th International Conference on Electrical Machines and Systems, ICEMS 2023
Country/TerritoryChina
CityZhuhai
Period5/11/238/11/23

Keywords

  • Finite element analysis (FEA)
  • flux modulation effect
  • harmonic analysis
  • stator PM
  • torque density

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Automotive Engineering

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