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<p>As a kind of stator-permanent magnet machine, flux reversal machines (FRMs) exhibit simple structure and easy thermal dissipation compared to rotor-permanent magnet machines. In order to increase torque density and efficiency, a flux-concentrated flux reversal machine (FC-FRM) with V-shaped consequent poles is proposed and further studied in this paper. Moreover, the operating principle of the FC-FRM is analyzed through the magnetomotive force (MMF)-permeance model. And the main working harmonics contributing to back electromagnetic force (EMF) is derived and validated using finite element analysis (FEA). Then, FC-FRM performances under different slot-pole combinations are investigated. In addition, the multi-objective optimization is carried out by evolutionary algorithm. Furthermore, under the same permanent magnet volume and copper loss, the FC-FRM is compared with the conventional structure. The results show that the FC-FRM exhibits higher torque density, power factor, and efficiency. Finally, a prototype of FC-FRM is constructed and experiments are conducted.</p>

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Design and analysis of a flux-concentrated flux reversal machine with consequent poles

  • 期刊论文

  • 发表日期：

    2025年6月11日

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  • Yuting Zheng,
  • Yong Jin,
  • Huayue Xu,
  • Zihui Wang

摘要

As a kind of stator-permanent magnet machine, flux reversal machines (FRMs) exhibit simple structure and easy thermal dissipation compared to rotor-permanent magnet machines. In order to increase torque density and efficiency, a flux-concentrated flux reversal machine (FC-FRM) with V-shaped consequent poles is proposed and further studied in this paper. Moreover, the operating principle of the FC-FRM is analyzed through the magnetomotive force (MMF)-permeance model. And the main working harmonics contributing to back electromagnetic force (EMF) is derived and validated using finite element analysis (FEA). Then, FC-FRM performances under different slot-pole combinations are investigated. In addition, the multi-objective optimization is carried out by evolutionary algorithm. Furthermore, under the same permanent magnet volume and copper loss, the FC-FRM is compared with the conventional structure. The results show that the FC-FRM exhibits higher torque density, power factor, and efficiency. Finally, a prototype of FC-FRM is constructed and experiments are conducted.