Design of IPMSM Rotor Shape for Magnet Eddy-Current Loss Reduction

Author

Se Young Oh ; Su-Yeon Cho ; Jung-Ho Han ; Ho Joon Lee ; Gwang-Hyeon Ryu ; Dongwoo Kang ; Ju Lee

Author_Institution

Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea

Volume

50

Issue

2

fYear

2014

fDate

Feb. 2014

Firstpage

841

Lastpage

844

Abstract

In this paper, an interior permanent magnet (PM) synchronous motor (IPMSM) with concentrated windings was designed for railway traction applications. This IPMSM was analyzed using a 2-D FEM. The results showed that the designed IPMSM has a significant PM eddy-current loss. For more accurate calculation, a 3-D FEM analysis was carried out. Further, the PM eddy-current loss was reduced without critical torque reduction by changing the position of the magnets at the rotor. Finally, frequency analysis of air-gap magnetic flux density waveforms was carried out to investigate the effect of magnet placement on the eddy-current loss.

Keywords

air gaps; design engineering; eddy current losses; finite element analysis; magnetic flux; permanent magnet motors; rotors; synchronous motors; 2D FEM; 3D FEM analysis; IPMSM rotor shape design; air-gap magnetic flux density waveforms; concentrated windings; frequency analysis; interior permanent magnet synchronous motor; magnet eddy-current loss reduction; magnet placement; magnet position change; Finite element analysis; Magnetic analysis; Magnetic losses; Permanent magnet motors; Solid modeling; Torque; Windings; Concentrated windings; interior permanent magnet synchronous motor (IPMSM); magnet eddy-current loss; railway; traction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2282473

Filename

6749033