Cogging Torque Minimization with Rotor Tooth Shaping in Axial Flux-Switching Permanent Magnet Machine


Kim J. H. , Li Y., ÇETİN E. , Sarlioglu B.

8th Annual IEEE Energy Conversion Congress and Exposition (ECCE), Wisconsin, United States Of America, 18 - 22 September 2016 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/ecce.2016.7854924
  • City: Wisconsin
  • Country: United States Of America

Abstract

This paper proposes a rotor tooth shaping method to reduce the cogging torque of an axial flux-switching permanent magnet machine. The rotor tooth is shaped in different configurations, including constant, trapezoidal, asymmetrical, extended, and square shapes. 3-D finite element analysis is performed to compare the proposed shapes of rotor tooth. Peak-to-peak cogging torque, fundamental flux linkage, loaded torque, and the total weight of teeth are compared using various rotor tooth angles. The simulation results show that overall minimum cogging torque is achieved by the extended shape of rotor tooth.