3-D finite element analysis of repulsion forces on contact systems in low voltage circuit breakers

Author

Ito, Shokichi ; Kawase, Yoshihiro ; Mori, Hiroyuki

Author_Institution

Dpet. of Electron., Fukuoka Inst. of Technol., Japan

Volume

32

Issue

3

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

1677

Lastpage

1680

Abstract

Low voltage circuit breakers which interrupt fault currents rapidly are widely used in power distribution systems. It is necessary, for the optimum design of circuit breakers, to analyze electromagnetic forces on the contact systems equipped with arc rupturing parts. In this paper, the forces generated by currents and flux densities are obtained by using the 3-D finite element method taking into account current constriction and variations in arc diameter. It is shown that the 3-D analysis is capable of evaluating new designs of LV circuit breaker contact systems

Keywords

circuit breakers; circuit-breaking arcs; distribution networks; electrical contacts; electromagnetic forces; finite element analysis; magnetic flux; power system protection; 3-D finite element analysis; arc diameter variations; arc rupturing parts; contact systems; current constriction; electromagnetic forces; fault current interruption; flux densities; low voltage circuit breakers; power distribution systems; repulsion forces; Circuit analysis; Circuit breakers; Conductivity; Conductors; Electromagnetic analysis; Electromagnetic forces; Equations; Fault currents; Finite element methods; Low voltage; Power distribution; Torque;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.497578

Filename

497578