Numerical modelization of transient current in relay

Author

Legros, W. ; Nicolet, A. ; Paganini, M.

Author_Institution

Inst. Montefiore, Liege Univ., Belgium

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3593

Lastpage

3595

Abstract

The authors describe the application of software for magnetic-field computation to the evaluation of transient current in the coil of a relay. The AZIMUT software package is used to compute the induced current in the coil and the electromagnetic force acting on the mobile part of the relay. This force is introduced in a simple mechanical equation to determine the change of position of the mobile part. The software has been modified to take into account the electromotive force induced by the movement. Some of the difficulties met in coupling the mechanical and electrical problems are discussed. The current measured in a relay fed with a voltage step is then compared to a computed curve. The shapes of the curves are similar. Several reasons for the differences between them are suggested

Keywords

coils; electrical engineering computing; magnetic fields; relays; software packages; AZIMUT software package; coil; electromagnetic force; electromotive force; induced current; magnetic-field computation; mechanical equation; relay; transient current; voltage step; Application software; Coils; Current measurement; Electromagnetic forces; Electromagnetic transients; Equations; Mobile computing; Numerical models; Relays; Software packages;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42374

Filename

42374