Deterioration of magnetic property of permendur due to laminating process for improvement of power density in permanent magnet motors

Article type: Research Article

Authors: Ako, Yuya^a | Takahashi, Yasuhito^a; | Fujiwara, Koji^a | Jikumaru, Takehiro^b

Affiliations: [a] Department of Electrical Engineering, Doshisha University, Kyoto, Japan | [b] IHI Corporation, Kanagawa, Japan

Correspondence: [*] Corresponding author: Yasuhito Takahashi, Department of Electrical Engineering, Doshisha University, Kyoto, 610-0394, Japan. E-mail: [email protected]

Abstract: This paper investigates the influence of laminating process of permendur for improvement of power density motors. A permendur has a high stress sensitivity, however the influence of manufacturing process on the magnetic properties of a permendur has not been sufficently discussed. Therefore, we discussed the influence of manufacturing process by measuring the laminated and single sheet specimen and carrying out 3D analysis of a surface permanent magnet synchronous motor (SPMSM) using the measured magnetic properties of the laminated and the single sheet specimens. As a consequence, deterioration of magnetization property by laminating process does not affect significantly motor property in motors having a wide gap.

Keywords: Permendur, laminated specimen, mechanical stress

DOI: 10.3233/JAE-191149

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 61, no. S1, pp. S97-S106, 2019