The Effects of the Unequal Rotor Slot Arc on Cogging Torque for Flux Switching Permanent Magnet Machines


ÇETİN E.

El-Cezeri Journal of Science and Engineering, vol.11, no.1, pp.73-80, 2024 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 1
  • Publication Date: 2024
  • Doi Number: 10.31202/ecjse.1347168
  • Journal Name: El-Cezeri Journal of Science and Engineering
  • Journal Indexes: Scopus
  • Page Numbers: pp.73-80
  • Keywords: asymmetric rotor, cogging torque, Flux switching machines, permanent-magnet machines, rotor permeance, unequal rotor slot arc
  • Yozgat Bozok University Affiliated: Yes

Abstract

Many of electric machine researchers are studying the flux switching permanent magnet machines. The cogging torque is one of the most unwanted parameters for highly sensitive electric machine applications. In this study, the configuration of the unequal rotor slot arc (URSA) to see the effects of the asymmetry for three phase FSPM machine has been studied. The proposed asymmetry presents different arc angled rotor poles and analyzes the torque performance of them by utilizing the 2D finite element method (2D-FEM). 12 stator poles and 10 rotor poles (12s/10p) FSPM machine topology have been chosen for the design. Results proved that the unequal rotor slot arc proposition demonstrates good performance in comparison to the symmetric design. Inequalities on the rotor slots were simulated by using parametric analysis to minimize the cogging torque. The suggested design indicates a substantial reduction in cogging torque, achieving a conspicuous minimization. Consequently, the suggested use of unequal rotor slot arc for FSPM machines has reasonable outcomes.