Title :
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
fDate :
6/1/2007 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.893147