Comparison of various methods of analysis and finite elements in 3-D magnetic field analysis

Author

Nakata, T. ; Takahashi, N. ; Fujiwara, K. ; Imai, T. ; Muramatsu, K.

Author_Institution

Dept. of Electr. Eng., Okayama Univ., Japan

Volume

27

Issue

5

fYear

1991

fDate

9/1/1991 12:00:00 AM

Firstpage

4073

Lastpage

4076

Abstract

In order to evaluate the most suitable method of analysis (A- phi or T- Omega method) and finite element (nodal or edge element) for a given problem, the features of each method and element have been investigated. The accuracy, computer storage, and CPU time of each method and element are compared for a 3-D nonlinear magnetostatic model and a 3-D eddy current model. The flux and eddy current densities calculated are compared with those measured. It is shown that the accuracy and the CPU time of the edge element are better than those of the nodal element. The A- phi method is better than T- Omega method for nonlinear problems from the viewpoint of convergence characteristics of nonlinear iterations.

Keywords

eddy currents; electrical engineering computing; finite element analysis; magnetic fields; magnetostatics; 3-D eddy current model; 3-D nonlinear magnetostatic model; 3D magnetic field analysis; A- phi method; CPU time; T- Omega method; accuracy; computer storage; convergence characteristics; eddy current density; edge element; finite element analysis; flux density; nodal element; nonlinear iterations; nonlinear problems; Convergence; Eddy currents; Equations; Finite element methods; Magnetic analysis; Magnetic fields; Magnetic flux; Magnetostatics; Saturation magnetization; Steel;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104996

Filename

104996