AC magnetic power loss of rare-earth permanent magnets

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

Article type: Research Article

Authors: Maeda, Yoshitaka^{a; *} | Nakahata, Yasushi^a | Todaka, Takashi^a | Enokizono, Masato^a

Affiliations: [a] Faculty of Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan

Correspondence: [*] Corresponding author. Tel./Fax: +81 97 554 7843; E-mail: ymaeda@mag.eee.oita-u.ac.jp

Abstract: This paper presents a.c. magnetic power loss values measured on rare-earth permanent magnets. Magnetized permanent magnets are used for the investigation, and the effects of magnetization direction on magnetic power loss are examined. The result shows that the magnetic power loss, when the external magnetic field is parallel to the remanent magnetization direction, is larger than that when the external magnetic field is perpendicular to the remanent magnetization direction.

Keywords: Rare-earth permanent magnet, a.c. magnetic properties, eddy-current loss, hysteresis loss, three-dimensional magnetic field analysis

DOI: 10.3233/JAE-2007-775

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 25, no. 1-4, pp. 231-235, 2007