3D modeling of electromagnets fed by alternating voltage sources

Author

Dreher, Thomas ; Meunier, Gé;rard

Author_Institution

Lab. d´´Electrotech. de Grenoble, ENSIEG, St. Martin d´´Heres, France

Volume

29

Issue

2

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

1341

Lastpage

1344

Abstract

A method allowing 3D simulation of AC voltage driven electromagnets is described. Since the harmonic current in the exciting coil depends on the air gap width, the electromotive force in the windings has to be taken into account. A computation method based on the finite element method was developed in order to obtain the static attractive force characteristics of AC electromagnets used for circuit breakers. This method is based on nodal finite elements and loop equations of the electric circuit. Both magnetic field and electric circuit equations are solved simultaneously in the frequency domain. Computation results are compared with measurements on a 32-A contractor/circuit breaker

Keywords

circuit breakers; electromagnets; finite element analysis; 32 A; 3D modeling; AC voltage driven; air gap width; alternating voltage sources; circuit breakers; contractor/circuit breaker; electric circuit; electromagnets; electromotive force; exciting coil; finite element method; frequency domain; harmonic current; loop equations; magnetic field; static attractive force characteristics; windings; Circuit breakers; Coils; Computational modeling; Electromagnetic modeling; Electromagnets; Equations; Finite element methods; Magnetic circuits; Magnetic field measurement; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.250646

Filename

250646