Title :
A Novel Cogging Torque Reduction Method for Interior-Type Permanent-Magnet Motor
Author :
Kang, Gyu-Hong ; Son, Young-Dea ; Kim, Gyu-Tak ; Hur, Jin
Author_Institution :
Res. Center, GEM-TECH Co., Ltd., Changwon
Abstract :
This paper presents a novel design method to reduce the cogging torque of interior-type permanent-magnet (PM) motor. In the design method, the optimal notches are put on the rotor pole face, which have an effect on the variation of PM shape or the residual flux density of PM. Through the space harmonic field analysis, the positions of notches are found, and the optimal shapes of notches are determined by using finite element method. The validity of the proposed method is confirmed by experiments.
Keywords :
finite element analysis; harmonic analysis; permanent magnet motors; torque; cogging torque reduction method; finite element method; interior-type permanent-magnet motor; motor design method; motor residual flux density; notch position; rotor pole face; space harmonic field analysis; Design methodology; Finite element methods; Forging; Harmonic analysis; Permanent magnet motors; Reluctance motors; Rotors; Shape; Synchronous motors; Torque; Cogging torque; finite-element (FE) method (FEM); interior-type permanent-magnet (IPM) motor; notch;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2008.2009662
