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The Research for a Structure of Current Limiter using a Phasic Similitude of Magnetic Circuit  

Ji, Geun-Yang (연세대 공대 전기전자공학과)
Min, Kyung-Il (연세대 공대 전기전자공학과)
Lee, Su-Won (성균관대 정보기술분야 밀착형 산학협력 인재양성사업단)
Jang, Bong-Hwan (연세대 공대 전기공학과)
Moon, Young-Hyun (연세대 전기전자공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.11, 2009 , pp. 2128-2135 More about this Journal
Abstract
In this paper, current limiter using a magnetic switching which is based on magnetic flux change in the case of fault is proposed. This current limiter consists of iron-core and three parts of coils. One is the primary coil connected to the power system. Another is the secondary coil wound to the opposite direction of the primary coil's winding. The other is the secondary of the secondary coil which is a movable copper plate winding and located below the secondary coil. In the normal state, the magnetic flux produced in the primary and secondary coils flows to the opposite directions each other and becomes to be canceled out. Therefore the voltages induced between the coils are zero. In the case of a fault, at the moment of a fault occurrence recognition, the switch connected to a secondary coil is opened and the secondary of the secondary coil is pulled out to the outside of the iron-core. Then, magnetic flux becomes to flow through the iron-core. Accordingly, the voltage is induced between the both ends of the primary coil and makes the current reduced. Therefore it is possible to cut off the circuit breaker easily with the proposed current limiter. This paper analyzes the current limiting effects and the detailed results are given.
Keywords
Current Limiter; Fault Current; Magnetic Switching; Circuit Breaker; Magnetic Flux; Phasic Similitude; Magnetic Circuit;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
연도 인용수 순위
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