Large-Scale Magnetic Field Analysis of Laminated Core by Using the Hybrid Finite Element and Boundary Element Method Combined with the Fast Multipole Method

Author

Takahashi, Yasuhito ; Wakao, Shinji ; Fujiwara, Koji ; Fujino, Seiji

Author_Institution

Dept. of Electr. Eng. & Bioscience, Waseda Univ., Tokyo

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2971

Lastpage

2973

Abstract

This paper shows a large-scale and highly accurate nonlinear magnetostatic field analysis of laminated iron core by using the hybrid finite element and boundary element (FE-BE) method. The hybrid FE-BE method is fairly effective to directly deal with the microstructure because no mesh division is required for the free space. In order to obtain the drastic reduction of the computational costs and stabilize the convergence characteristic of the Newton-Raphson method, the fast multipole method and the line search are introduced. Some numerical results that verify the effectiveness of the developed method are also presented

Keywords

ferromagnetic materials; finite element analysis; iron; laminates; Fe; Newton-Raphson method; boundary element method; fast multipole method; highly accurate nonlinear magnetostatic field analysis; hybrid finite element; laminated core; laminated iron core; large-scale magnetic field analysis; microstructure; Boundary element methods; Computational efficiency; Finite element methods; Iron; Large-scale systems; Magnetic analysis; Magnetic cores; Magnetic fields; Magnetostatics; Microstructure; Fast multipole method; hybrid finite element and boundary element (FE–BE) method; laminated iron core; line search;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.893147

Filename

4202985