Quench Protection Characteristics of HTS Coil Impregnated With Ionic-Liquid

被引：0
作者：
Tanaka, S. [1 ]
Nakahara, T. [1 ]
Hosono, M. [1 ]
Nakamura, K. [1 ]
Takao, T. [1 ]
Tsukamoto, O. [2 ]
机构：
[1] Sophia Univ, Tokyo 1028554, Japan
[2] Yokohama Natl Univ, Yokohama 2408501, Japan
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2025年 / 35卷 / 05期
关键词：
Coils; Yttrium barium copper oxide; Protection; Glass; Windings; Temperature; Insulation; Cryogenics; Magnetic liquids; Epoxy resins; Ionic-liquid; impregnation material; quench protection; YBCO tapes;
D O I：
10.1109/TASC.2025.3537077
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
HTS coils are commonly impregnated with epoxy resin to make the coil windings mechanically solid and improve thermal conductivity among the winding layers. The authors are investigating the applicability of an ionic-liquid as an alternative to epoxy resin for impregnation material in HTS coils. An ionic-liquid is in a liquid state at room temperature and in a glass state at cryogenic temperatures that securely fixes the HTS coil tapes. The ionic-liquid in the glass state has higher thermal conductivity than epoxy resin. An ionic-liquid-impregnated coil damaged during operation at cryogenic temperatures can thus be repaired by warming it to room temperature, removing the damaged part of the tapes, and splicing with new tapes. In this study, the quench protection characteristics of ionic-liquid-impregnated coils wound with electrically insulated HTS tapes are experimentally investigated using small-scale test coils that are impregnated with ionic-liquid, wound with YBCO tapes, and insulated with Kapton tape.
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页数：4
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