Analytical and experimental investigation of electrical characteristics of a metallic insulation GdBCO coil

D. G. Yang, Y. H. Choi, Y. G. Kim, J. B. Song, Haigun Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

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 (1.25Ic), 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.

Original languageEnglish
Article number034701
JournalReview of Scientific Instruments
Volume87
Issue number3
DOIs
Publication statusPublished - 2016 Mar 1

Fingerprint

insulation
Tapes
Insulation
coils
Magnets
Solenoids
Fusion reactors
Radiation damage
Brass
tapes
Neutrons
RL circuits
magnets
Networks (circuits)
Kapton (trademark)
fusion reactors
brasses
solenoids
organic materials
radiation damage

ASJC Scopus subject areas

  • Instrumentation

Cite this

Analytical and experimental investigation of electrical characteristics of a metallic insulation GdBCO coil. / Yang, D. G.; Choi, Y. H.; Kim, Y. G.; Song, J. B.; Lee, Haigun.

In: Review of Scientific Instruments, Vol. 87, No. 3, 034701, 01.03.2016.

Research output: Contribution to journalArticle

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