Magnetic characteristic analysis of dual-rotor machines

Issue title: Proceedings of the twelfth International Symposium on Interdisciplinary Electromagnetic, Mechanic and Biomedical Problems, ISEM Bad Gastein

Article type: Research Article

Authors: Ikariga, Atsushi^{a; *} | Shimoji, Hiroyasu^a | Enokizono, Masato^a | Mauchi, Toru^b

Affiliations: [a] Faculty of Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan | [b] Akashi Electric Machinery Co., Ltd, 1688-2, Onizu, Onga, Fukuoka 811-4341, Japan

Correspondence: [*] Corresponding author. Tel./Fax: +81 97 554 7823; E-mail: ikariga@cc.oita-u.ac.jp

Abstract: This paper presents a dual-rotor electrical machine, designed with grain-oriented electrical steel sheets and Nd-Fe-B permanent magnets. In order to achieve high performance within limited volume, we have tried to increase the magnetic loading by using rare earth permanent magnets in the dual-rotor construction. The use of grain-oriented electrical steel sheets is preferred instead of usual non-oriented sheets in order to let flow high magnetic flux through the core material, avoiding the magnetic saturation. The two-dimensional vector magnetic properties in the dual-rotor core model are analyzed by using the finite element method with the E&SS modeling. The calculated results are compared with measured results on the prototype machine for verification of the designing.

Keywords: Dual-rotor, rare earth permanent magnet, grain-oriented electrical steel sheet, vector magnetic property, finite element method, E&SS modeling

DOI: 10.3233/JAE-2007-835

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 25, no. 1-4, pp. 173-177, 2007