Characteristics of new interior permanent magnet motor using flared-shape arrangement of ferrite magnets

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: Yoon, Keun-Young^a | Lee, Jin-Hee^b | Kwon, Byung-Il^{b; *}

Affiliations: [a] Department of Mechatronics Engineering, Hanyang University, Ansan, Korea | [b] Department of Electronic Systems Engineering, Hanyang University, Ansan, Korea

Correspondence: [*] Corresponding author: Byung-Il Kwon, 3rd Engineering building, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Korea. E-mail:bikwon@hanyang.ac.kr

Abstract: This paper proposes a new design of interior permanent magnet (IPM) type brushless DC (BLDC) motor using low-price ferrite magnet which has the similar characteristics as the IPM type BLDC motor that uses expensive NdFeB magnet. In order to replace the NdFeB magnet, the proposed design adopts the structure of the C-shape permanent magnets which are arranged as the flared shape. The characteristics of the proposed IPM motor are compared with the NdFeB IPM motor through the finite element analysis (FEA). It is demonstrated that proposed model satisfied with the characteristics of the NdFeB IPM motor.

Keywords: IPM BLDC, permanent magnet, ferrite magnet, flared-shape arrangement, flared, c-type magnet, nodal force, torque ripple, concentrated winding, compressor

DOI: 10.3233/JAE-162059

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 52, no. 1-2, pp. 591-597, 2016