Analytical and experimental investigation of electrical characteristics of a metallic insulation GdBCO coil
- Authors
- Yang, D. G.; Choi, Y. H.; Kim, Y. G.; Song, J. B.; Lee, H. G.
- Issue Date
- 3월-2016
- Publisher
- AMER INST PHYSICS
- Citation
- REVIEW OF SCIENTIFIC INSTRUMENTS, v.87, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- REVIEW OF SCIENTIFIC INSTRUMENTS
- Volume
- 87
- Number
- 3
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/89421
- DOI
- 10.1063/1.4942911
- ISSN
- 0034-6748
- Abstract
- This paper presents results, experimental and analytical, of the electrical characteristics of GdBCO single-pancake coils co-wound with a brass tape as metallic insulation (MI coil). The GdBCO pancakes were subjected to sudden discharge, charge-discharge, and over-current tests. The sudden discharge and charge-discharge test results of the MI coil demonstrated that MI coils can be charged and discharged significantly faster than non-insulated coils that are wound only with GdBCO tape. In over-current tests at 150 A (1.25I(c)), the MI coil exhibited better electrical behavior, i.e., self-protecting features, than its counterpart co-wound with Kapton tape, an insulator. Moreover, the experimental and analytical results are in agreement, validating the use of a concise equivalent parallel-RL circuit model for the MI coil to characterize its electrical behavior. Overall, the MI winding technique is highly promising to help build compact, mechanically robust, and self-protecting magnets composed of REBCO pancake coils. With no organic material in the winding, MI REBCO pancakes will be immune to neutron radiation damage, making the MI winding technique a viable option for fusion reactors, such as for toroidal field, poroidal field magnets, and central solenoid. (C) 2016 AIP Publishing LLC.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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