Electromagnetic analysis of high speed brushless DC motor according to PM structure

Author

Seok-Myeong Jang ; Jae-Hoon Jeong ; Hyung-Il Park ; Ji-Hwan Choi ; So-Young Sung

Author_Institution

Dept. of Electr. Eng., Chungnam Nat. Univ., Daejeon, South Korea

fYear

2012

fDate

9-12 Oct. 2012

Firstpage

884

Lastpage

886

Abstract

This paper deals with the ellipse permanent magnet machines for the minimization of torque ripple based on electromagnetic field theory. On the basis of a magnetic vector potential and a two dimensional (2-D) polar system, analytical solutions for flux density due to permanent magnet (PM) and current are obtained. In particular, the analytical solutions for mathematical expressions of magnets with different circumferential thicknesses can be solved introducing improved magnetization modeling techniques. The analytical results are validated extensively be nonlinear finite element solutions, a reduction of torque ripple can be achieved.

Keywords

brushless DC motors; electromagnetic field theory; finite element analysis; minimisation; permanent magnet machines; 2-D polar system; PM structure; circumferential thicknesses; electromagnetic analysis; electromagnetic field theory; ellipse permanent magnet machines; flux density; high speed brushless DC motor; magnetic vector potential; magnetization modeling techniques; nonlinear finite element solutions; torque ripple; two dimensional polar system; Magnetic analysis; Stators;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference (VPPC), 2012 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4673-0953-0

Type

conf

DOI

10.1109/VPPC.2012.6422704

Filename

6422704