Title :
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
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;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376219
