Magnetic field analysis of polar anisotropic ferrite bonded magnet to outer rotor type brushless dc motor considering magnetizing process

Author

Lee, Su-Jin ; Lee, Jeong-Jong ; Hong, Jung-Pyo ; Song, Byoung-Young ; Park, Jong-Won

Author_Institution

Dept. of Automotive Eng., Hanyang Univ., Seoul, South Korea

fYear

2010

fDate

9-12 May 2010

Firstpage

1

Lastpage

1

Abstract

In this paper, we propose an analytical method of polar anisotropic ferrite bonded magnet to outer rotor type brushless dc motor considering magnetizing process. The characteristics of polar anisotropic magnets are different from cored type ones which have uniform magnetization direction. Consequently, the magnetization directions of ferrite bonded magnet are analyzed by finite element analysis for magnetization procedure. Additionally, the overhang effect of the magnet is calculated by using 3-D FEA. The validity of the analysis method is verified by comparing the analyzed results with measured ones.

Keywords

brushless DC motors; ferrites; finite element analysis; magnetic anisotropy; magnetic fields; permanent magnet motors; rotors; 3D FEA; brushless DC motor; finite element analysis; magnetic field analysis; magnetizing process; overhang effect; polar anisotropic ferrite bonded magnet; rotor; uniform magnetization direction; Anisotropic magnetoresistance; Bonding; Brushless DC motors; Ferrites; Magnetic analysis; Magnetic anisotropy; Magnetic fields; Magnetization; Perpendicular magnetic anisotropy; Rotors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Field Computation (CEFC), 2010 14th Biennial IEEE Conference on

Conference_Location

Chicago, IL

Print_ISBN

978-1-4244-7059-4

Type

conf

DOI

10.1109/CEFC.2010.5481769

Filename

5481769