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http://dx.doi.org/10.4313/JKEM.2002.15.5.460

A Study of the Characteristics on the Vacuum Interrupter with Axial Magnetic Field Type using 3 Dimension Finite Element Analysis  

하덕용 (한양대학교 공과대학 전기공학과)
강형부 (한양대학교 공과대학 전기전자공학부)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.15, no.5, 2002 , pp. 460-467 More about this Journal
Abstract
This paper deals with the distribution characteristics of the current density and axial magnetic flux density on the vacuum interrupter with axial magnetic field type using 3 dimension finite element analysis. An axial magnetic field parallel to the current flow in the arc column can improve the current breaking capacity of vacuum interrupter by affecting the arc mode. The axial magnetic flux density on the contact electrode surface is analyzed by inputting external current as a function of the transient time for sine half wave. And it also is analyzed within the gap distance of the contact electrode. The peak value of current but is decreased with the descending current on the contact electrode surface and within the gap distance of the contact electrode. The residual magnetic field is generated on the contact electrode surface and within the gap distance in the instant of zero current, which is due to the influence of eddy currents. The phase shift due to eddy currents, defined as time difference between the maximum value of current and axial magnetic field, is about 1ms in the center point of gap distance.
Keywords
Vaccum Interrupter; Axial Magnetic Field; Phase Shift; Gap Distance; Residual magnetic Field;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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