Numerical analysis of dynamic characteristics of electromagnets using 3-D finite element method with edge elements

Author

Kawase, Yoshihiro ; Miyatani, Osamu ; Yamaguchi, Tadashi ; Ito, Shokichi

Author_Institution

Dept. of Electron. & Comput. Eng., Gifu Univ., Japan

Volume

30

Issue

5

fYear

1994

fDate

9/1/1994 12:00:00 AM

Firstpage

3248

Lastpage

3251

Abstract

This paper describes a new method for the accurate computation of the dynamic behavior of DC and AC electromagnets, such as used in contactors, relays and other electromagnetic devices. The method is based on the 3-D finite element method with edge elements taking into account the nonlinearity of the cores and the eddy current. For the dynamic analysis, it is necessary to change the 3-D meshes automatically. The analyzed model couples electrical, magnetic and mechanical systems of the electromagnets. Our method makes it possible to predict dynamic characteristics for the optimizing design of electromagnets. The validity of the new method is confirmed by experiments

Keywords

eddy currents; electromagnets; finite element analysis; magnetic cores; mesh generation; 3-D finite element method; 3-D meshes; AC electromagnets; DC electromagnets; contactors; core nonlinearity; design optimization; dynamic characteristics; eddy current; edge elements; electrical systems; electromagnetic devices; magnetic systems; mechanical systems; numerical analysis; relays; Contactors; Eddy currents; Electromagnetic analysis; Electromagnetic devices; Electromagnets; Finite element methods; Magnetic analysis; Magnetic cores; Numerical analysis; Relays;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.312630

Filename

312630