Evaluation of efficiency and temperature rise of permanent magnet synchronous motor depending on magnetic properties

Issue title: Proceedings from the 16th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2013)

Guest editors: Xavier Maldague and Toshiyuki Takagi

Article type: Research Article

Authors: Iwasaki, Norihisa^{a; *} | Kitamura, Masashi^a | Enomoto, Yuji^a

Affiliations: [a] Hitachi Research Laboratory, Hitachi, Ltd. Hitachi-shi, Ibaraki-ken, Japan | Université Laval, Canada | Tohoku University, Japan

Correspondence: [*] Corresponding author: Norihisa Iwasaki, Hitachi Research Laboratory, Hitachi, Ltd. 1-1 omika-cho, 7-chome, Hitachi-shi, Ibaraki-ken 319-1292, Japan. Tel.: +81 294 52 5111; Fax: +81 294 52 7647; E-mail: [email protected]

Abstract: This paper reports a utility of the design method that conducts thermo-magnetic coupling analysis by using a heat equivalent circuit and describes evaluation results of relationship between losses and temperature rise based on magnetic properties. We manufactured and tested prototype motors that were designed with thermo-magnetic coupling analysis and found that reduction of copper loss become of particular importance in order to reduce temperature rise, and total losses of motors.

Keywords: Permanent magnet motor, efficiency, temperature rise, magnetic properties, losses

DOI: 10.3233/JAE-141906

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 45, no. 1-4, pp. 779-786, 2014