Numerical analysis of axial magnetic field acting on the arc in vacuum circuit breakers by 3-D finite element method taking into account eddy currents

Author

Kawase, Yoshihiro ; Inoue, Hiroalu ; Ota, Tomohiro ; Ito, Shokichi

Author_Institution

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

Volume

34

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

2668

Lastpage

2671

Abstract

It is necessary for the optimum design of vacuum circuit breakers with axial magnetic field electrodes to analyze the residual magnetic field between the contacts in vacuum chambers at the instant when the arc current becomes zero. The residual magnetic field is generated by the eddy currents flowing in the electrodes. In this paper, the residual magnetic field is obtained by using a 3-D finite element analysis taking into account eddy currents. It is shown that the eddy currents are greatly influenced by the configuration of the electrodes, for example the number of slits in the contacts

Keywords

eddy currents; finite element analysis; magnetic fields; vacuum circuit breakers; 3D finite element method; axial magnetic field; contact slits; eddy currents; residual magnetic field; vacuum chambers; vacuum circuit breakers; Circuit breakers; Coils; Conductivity; Electrodes; Fault currents; Ignition; Magnetic analysis; Magnetic fields; Numerical analysis; Vacuum arcs;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.717618

Filename

717618