Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2282473
