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사병렬 초전도코일의 전류분류 측정을 위한 Rogowski 코일의 제작 및 특성 실험
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  • 사병렬 초전도코일의 전류분류 측정을 위한 Rogowski 코일의 제작 및 특성 실험
저자명
조대호,양성은,김민재,안민철,박동근,배덕권,석복렬,고태국,Cho. Dae-Ho,Yang. S.E.,Kim. M.J.,Ahn. M.C.,Park. D.K.,Bae. D.K.,Seok. B.Y.,Ko. T.K.
간행물명
한국초전도·저온공학회논문지
권/호정보
2007년|9권 3호|pp.37-40 (4 pages)
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한국초전도저온공학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

Large critical current is one of the prerequisites for the design of superconducting electrical equipments with large power capacity. To enlarge the critical current. multiple parallel connection is inevitable. In multiple parallel superconducting coils. the difference in normal resistance of each shunt leads to unequal current distribution. which may yield burnout. Therefore. uniform current distribution is required for a stable operation of multiple parallel superconducting coils. In this paper, Rogowski coils were fabricated to measure each shunt current of a 4-parallel superconducting coil. Four Rogowski coils were installed at the copper bars, which are used as current leads in superconducting coils. As a result, linearity of the Rogowski coils was ascertained and coefficients of each coil, the ratio of voltage and current, were derived. The coefficients were compared with theoretically calculated values. Based on the coefficients, each shunt current was calculated in a 4-parallel superconducting coil, where uniform current. distribution was confirmed. This paper verified the feasibility of the fabricated Rogowski coils as well as operational stability of the 4-parallel superconducting coil in 77K.