A Finite Element - Analytical Method for Electromagnetic Field Analysis of Electric Machines with Free Rotation

Author

Chau, K. ; Zhang, Ye ; Jiang, J. ; Zhang, D.

Author_Institution

Univ. of Hong Kong, Hong Kong

fYear

2006

fDate

8-12 May 2006

Firstpage

495

Lastpage

495

Abstract

The finite element-analytical method (FEAM) is newly proposed and implemented for analysis of practical machines with free rotation. A new analytical solution of the airgap region will be derived, which can naturally couple with the FEM equations of both the stator and rotor regions. The proposed FEAM will be verified by comparing with both FEM and experimental results based on practical PM brushless DC (PMBDC) machines. The key of the proposed FEAM is to naturally couple the analytical solution with the FEM equations based on the continuity of magnetic vector potentials across their boundaries. Consequently, the modified stiffness matrix is derived.

Keywords

brushless machines; computational electromagnetics; electromagnetic fields; finite element analysis; DC PMBDC; FEAM; FEM equations; airgap region; electric machines; electromagnetic field analysis; finite element-analytical method; free rotation; magnetic vector potentials; practical PM brushless machines; rotor; stator; stiffness matrix; Circuit analysis; Couplings; Electric machines; Electromagnetic analysis; Electromagnetic fields; Equations; Finite element methods; Magnetic analysis; Magnetic circuits; Stators;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.376219

Filename

4261928