Title :
A Novel Cogging Torque Reduction Method for Interior Type Permanent Magnet Motor
Author :
Kang, Gyu-Hong ; Son, Young-Dae ; Kim, Gyu-Tak
Author_Institution :
GEM-TECH Co., Ltd., Changwon
Abstract :
This paper presents a novel design method to reduce cogging torque of interior type permanent magnet (IPM) motor. In the design method, the optimal notches are put on the rotor pole face, which have an effect on variation of permanent magnet (PM) shape or residual flux density of PM. Through the space harmonics field analysis, the positions of notches are found and the optimal shapes of notches are determined by using finite element method (FEM). The validity of the proposed method is confirmed by experiments.
Keywords :
finite element analysis; harmonic analysis; magnetic flux; permanent magnet motors; torque; FEM; cogging torque reduction method; finite element method; flux density; harmonics field analysis; interior type permanent magnet motor; optimal notches; rotor pole face; Design methodology; Finite element methods; Forging; Harmonic analysis; Magnetic analysis; Permanent magnet motors; Permanent magnets; Rotors; Shape; Torque;
Conference_Titel :
Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1259-4
DOI :
10.1109/IAS.2007.4347776
