KIEE International Transaction on Electrical Machinery and Energy Conversion Systems

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Analysis of Cogging Torque in Interior Permanent Magnet Motor by Analytical Method

  • Kang, Gyu-Hong (Department of Electrical Engineering, Changwon National University) ;
  • Hong, Jung-Pyo (Department of Electrical Engineering, Changwon National University) ;
  • Kim, Gyu-Tak (Department of Electrical Engineering, Changwon National University)
  • Published : 2001.06.01

⟨ Previous Next ⟩

Abstract

This paper deals with magnetic field analysis and computation of cogging torque using an analytical method in Interior Permanent Magnet Motor (IPMM). The magnetic field is analyzed by solving space harmonics field analysis due to magnetizing and the cogging torque is analyzed by combining field analysis with relative permeance. In reducing cogging torque, the inferences of various design variable and magnetizing distribution are investigated. It is shown that the slot and pole ratio (the pole-arc / pole-pitch ratio) combination has a significant effect on the cogging torque and presents a optimal flux barrier shape to reduce the cogging torque. The validity of the proposed technique is confirmed with 2-D Finite Element(FE) analysis.

Keywords