Finite element analysis of an anisotropic ferrite bonded magnet for BLDC motor design

Author

Hong-Soon Chang ; Soo-Hyun Baek

Author_Institution

Dept. of Electr. Eng., Dongguk Univ.

Volume

2

fYear

2001

fDate

37104

Firstpage

1170

Abstract

In many cases, ferrite bonded magnets used in inner-rotor type small brushless DC (BLDC) motors do not have rotor core, and the magnetization directions of permanent magnets do not have only parallel or radial direction. In this paper, the magnetization directions of a ferrite bonded magnet are analyzed by finite element analysis for magnetization procedure. The characteristics of an inner-rotor type BLDC motor are analyzed by using the analyzed magnetization model. In the analysis, the overhang effect of the magnet is calculated by using 3-D FEM. The validity of the analysis method is verified by comparing the analyzed results with measured ones

Keywords

brushless DC motors; ferrite devices; finite element analysis; machine theory; magnetisation; permanent magnet motors; permanent magnets; small electric machines; 3D FEM; anisotropic ferrite bonded magnets; bonded magnet; finite element analysis; inner-rotor type small brushless DC motors; magnetization directions; overhang effect; Anisotropic magnetoresistance; Bonding; Brushless DC motors; DC motors; Ferrites; Finite element methods; Magnetic analysis; Magnetic anisotropy; Magnetization; Perpendicular magnetic anisotropy;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on

Conference_Location

Shenyang

Print_ISBN

7-5062-5115-9

Type

conf

DOI

10.1109/ICEMS.2001.971888

Filename

971888