Variable flux permanent magnet motor utilizing centrifugal force

Issue title: Proceedings from the 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2015)

Guest editors: Fumio Kojima, Futoshi Kobayashi and Hiroyuki Nakamoto

Article type: Research Article

Authors: Morimoto, Eiki^* | Niguchi, Noboru | Hirata, Katsuhiro

Affiliations: Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, Osaka, Japan

Correspondence: [*] Corresponding author: Eiki Morimoto, Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University 2-1, Yamadaoka, Suita, Osaka, 565-0871 Japan. E-mail:eiki.morimoto@ams.eng.osaka-u.ac.jp

Abstract: This paper evaluates a permanent magnet variable flux motor that uses centrifugal forces to change its torque constant. As the rotation speed increases, the displacement angle between the separate rotors also automatically increases. The effectiveness of the motor is verified by 3-D finite element analysis and measurements on a prototype. These results show a good agreement with each other. From these, it is verified that the motor can change the characteristics automatically.

Keywords: Variable flux, permanent magnet motor, centrifugal force, finite element analysis, experiment verification

DOI: 10.3233/JAE-162065

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 52, no. 1-2, pp. 563-569, 2016