Magnetization modeling of a bonded magnet for performance calculation of inner-rotor type BLDC motor

Author

Jung, In-Soung ; Sung, Ha-Gyeong ; Chun, Yon-Do ; Borm, Jin-Hwan

Author_Institution

Korea Electron. Technol. Inst., KyungGi, South Korea

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2810

Lastpage

2813

Abstract

In many cases, ferrite bonded magnets used in inner-rotor type brushless DC (BLDC) motors do not have rotor core, and the magnetization directions of permanent magnets do not have only parallel or radial direction. The characteristics of magnets are different from cored type ones which have uniform magnetization direction. In this paper, the magnetization directions and intensities 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 determined magnetization. The analysis results are compared with the measured ones

Keywords

brushless DC motors; ferrite devices; finite element analysis; machine theory; magnetisation; permanent magnet motors; rotors; brushless DC motor; ferrite bonded magnet; finite element model; inner rotor; magnetization; permanent magnet; Bonding; Brushless DC motors; Brushless motors; DC motors; Ferrites; Magnetic analysis; Magnetic cores; Magnetization; Permanent magnet motors; Rotors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951314

Filename

951314