A New Anisotropic Bonded NdFeB Permanent Magnet and Its Application to a Small DC Motor

Author

Kim, Hyo Jun ; Koh, Chang Seop ; Shin, Pan Seok

Author_Institution

R&D Center, JAHWA Electron. Co. Ltd., Buki, South Korea

Volume

46

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

2314

Lastpage

2317

Abstract

This paper reports the method of preparing 4-pole-oriented anisotropic bonded NdFeB magnet and presents an application to a small size dc motor. The influence on the magnet performance in terms of alignment magnetic field intensity, powder filling density, and the temperature of compression mold tools are investigated. The design and optimization of the magnet and motor were done with the aid of electromagnetic field analysis based on the finite element method. Experimental results with a designed dc motor adopting the developed anisotropic bonded NdFeB magnet show 50% reduction of weight and volume.

Keywords

DC motors; boron alloys; finite element analysis; iron alloys; magnetic anisotropy; neodymium alloys; permanent magnet motors; permanent magnets; 4-pole-oriented anisotropic bonded NdFeB magnet; DC motor; NdFeB; electromagnetic field analysis; finite element method; magnetic field intensity; powder filling density; Anisotropic magnetoresistance; Bonding; Compression molding; DC motors; Filling; Magnetic anisotropy; Magnetic fields; Perpendicular magnetic anisotropy; Powders; Temperature; Anisotropic bonded magnet; direct current motor; dynamic hydrogenation decomposition desorption recombination (d-HDDR); permanent magnet; polar anisotropic; powder alignment;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2010.2040598

Filename

5467622