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Design of IPMSM Rotor Shape for Magnet Eddy-Current Loss Reduction
- Authors
- Oh, Se Young; Cho, Su-Yeon; Han, Jung-Ho; Lee, Ho Joon; Ryu, Gwang-Hyeon; Kang, Dongwoo; Lee, Ju
- Issue Date
- Feb-2014
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Concentrated windings; interior permanent magnet synchronous motor (IPMSM); magnet eddy-current loss; railway; traction
- Citation
- IEEE TRANSACTIONS ON MAGNETICS, v.50, no.2, pp.1 - 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON MAGNETICS
- Volume
- 50
- Number
- 2
- Start Page
- 1
- End Page
- 4
- ISSN
- 0018-9464
- 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.
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