A study on characteristics of rotor losses for IPMSM considering slot-pole combination

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part I

Article type: Research Article

Authors: Seo, Jang-Ho^{a; *} | Jung, Hyun-Kyo^a

Affiliations: [a] School of Electrical Engineering and computer science, Seoul National University, Shillim-dong, Kwanak-gu, Seoul 151-742, Korea

Correspondence: [*] Corresponding author. Tel.: +82 2 880 7262; Fax: +82 2 878 1452; E-mail: [email protected]

Abstract: In this paper, we investigated the effect of slot-pole combination on rotor loss in interior permanent magnet synchronous machine (IPMSM) with distributed armature windings. In order to study the characteristics of the rotor losses, two machines for high-speed operation such as electric vehicle were designed. One is fractional slot winding and the other is conventional one. Based on 2-D time-stepped finite element method (FEM) we analyzed both iron loss and eddy-current loss in the permanent magnet of the machines according to their driving conditions. From the analysis results, it was shown that rotor iron loss and eddy-current loss of PM of machine employing fractional slot-winding is definitely large at load condition.

Keywords: Distributed armature winding, electric vehicle, fractional slot per pole, iron loss, interior permanent magnet synchronous machine

DOI: 10.3233/JAE-2010-1142

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 431-438, 2010