Interface technology of conductor/coil to achieve next generation ultra-compact superconducting coil systems

• Project/Area Number: 25289070
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Chiba University
• Principal Investigator: Nakagome Hideki 千葉大学, 工学(系)研究科(研究院), 教授 (20375611)
• Co-Investigator(Renkei-kenkyūsha): MAEDA Hideaki 理化学研究所, ライフサイエンス技術基盤研究センター, 施設長 (40392120)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000); Fiscal Year 2015: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2014: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2013: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
• Keywords: 高温超伝導コイル / 特性劣化 / 遮蔽電流 / 熱暴走 / 遮蔽電流磁場 / 結合電流 / 超伝導特性の劣化

Outline of Final Research Achievements

The REBCO coated conductor has a potential to realize a superconducting devices with very high current density and energy density at 20 K class temperature and expected to be used for various devices such as power applications. The conductor, however, shows problems when it is used as a coil; typical one is degradation of superconducting performance. In this study, three important problems and solutions for them were studied for achieving basic technology for REBCO coated conductor coil applications.

Research Products

• [Journal Article] A Long Charging Delay for a No-Insulation REBCO Layer-Wound Coil and its Influence on Operation with Outer LTS coils (2016)
  • Author(s): K. Yanagisawa, S. Iguchi, Y. Xu, J. Li, A. Saito, H. Nakagome, T. Takao, S. Matsumoto, M. Hamada, and Y. Yanagisawa
  • Journal Title: IEEE Transaction on Applied Superconductivity Volume: in press Pages: 1-1
  • DOI: 10.1109/tasc.2016.2515540
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Reduction of Screening Current-Induced Magnetic Field of REBCO Coils by the Use of Multi-Filamentary Tapes (2014)
  • Author(s): Y. Yanagisawa, Y. Xu, X. Jin, H. Nakagome, and H. Maeda
  • Journal Title: IEEE Transaction on Applied Superconductivity Volume: 25 Issue: 3 Pages: 6603705-6603705
  • DOI: 10.1109/tasc.2014.2377492
  • Peer Reviewed
• [Journal Article] Basic mechanism of self-healing from thermal runaway for uninsulated REBCO pancake coils (2014)
  • Author(s): Y. Yanagisawa, K. Sato, K. Yanagisawa, H. Nakagome, X Jin, M. Takahashi, H. Maeda
  • Journal Title: Physica C Volume: 499 Pages: 40-44
  • DOI: 10.1016/j.physc.2014.02.002
  • Peer Reviewed
• [Journal Article] An ultra-thin polyimide insulation coating on REBCO conductors by electrodeposition produces a maximum overall current density for REBCO coils (2013)
  • Author(s): Y. Yanagisawa, K. Sato, T. Matsuda, T. Nagato, H. Kamibayashi, H. Nakagome, X. Jin, M. Takahashi, H. Maeda
  • Journal Title: Physica C Volume: 495 Pages: 15-18
  • DOI: 10.1016/j.physc.2013.07.009
  • Peer Reviewed
• [Presentation] 高フープ応力耐性と低遮蔽電流性を両立するHTSコイル技術に向けて（１） ～スクライブタイプのREBCO線材を用いたコイルに生じる遮蔽電流～ (2015)
  • Author(s): 上野 健志、梶田 健太朗、高尾 智明、松田 徹郎、岡村 哲至、濱田 衞、柳澤 吉紀、前田 秀明 、中込秀樹
  • Organizer: 低温工学・超電導学会
  • Place of Presentation: 姫路
  • Year and Date: 2015-12-02
• [Presentation] Basic mechanism of self-healing from thermal runaway for uninsulated REBCO coils (2014)
  • Author(s): Y. Yanagisawa, K. Sato, K. Yanagisawa, H. Nakagome, H. Maeda
  • Organizer: Applied Superconductivity Conference (ASC) 2014
  • Place of Presentation: Charlotte, NC, USA
  • Year and Date: 2014-08-10 – 2014-08-15
• [Presentation] Effect of cooling condition and local Joule heating on the self-healing behavior from thermal runaway for uninsulated REBCO pancake coils (2014)
  • Author(s): K. Yanagisawa, Y. Yanagisawa, K. Sato, H. Nakagome, H. Maeda
  • Organizer: Applied Superconductivity Conference (ASC) 2014
  • Place of Presentation: Charlotte, NC, USA
  • Year and Date: 2014-08-10 – 2014-08-15
• [Presentation] Reduction of screening current-induced magnetic field of REBCO coils by the use of multi-filamentary conductors (2014)
  • Author(s): Y. Xu, Y. Yanagisawa, X. Jin, H. Nakagome, H. Maeda
  • Organizer: Applied Superconductivity Conference (ASC) 2014
  • Place of Presentation: Charlotte, NC, USA
  • Year and Date: 2014-08-10 – 2014-08-15
• [Presentation] Reduction of screening current-induced magnetic field for REBCO coils by the use of multi-filamentary conductors (2014)
  • Author(s): Y. Xu, Y. Yanagisawa, X. Jin, H. Nakagome, and H. Maeda
  • Organizer: 25th International Cryogenic Engineering Conference & International Cryogenic Materials Conference 2014
  • Place of Presentation: Enschede, The Netherlands
  • Year and Date: 2014-07-07 – 2014-07-11
• [Presentation] Self-healing effect from thermal runaway for non-inuslated ReBCO coils (2014)
  • Author(s): K. Yanagisawa, M. Nawa, Y. Yanagisawa, K. Sato, H. Nakagome, and H. Maeda
  • Organizer: 25th International Cryogenic Engineering Conference & International Cryogenic Materials Conference 2014
  • Place of Presentation: Enschede, The Netherlands
  • Year and Date: 2014-07-07 – 2014-07-11
• [Presentation] Ultra-thin 5μm thick polyimide coating on REBCO-coated conductors to enhance coil current density (2013)
  • Author(s): K. Sato, Y. Yanagisawa, H. Nakagome, T. Nagato, H. Kamibayashi, T. Matsuda, M. Takahashi, and H. Maeda
  • Organizer: 23rd International Conference on Magnet Technology
  • Place of Presentation: 米国・ボストン
• [Presentation] 非絶縁REBCOパンケーキコイルにおける熱暴走からの自律的な回復メカニズムの解明 (2013)
  • Author(s): 柳澤 吉紀、佐藤 耕太、柳澤 杏子、中込 秀樹、金 新哲、高橋 雅人、前田 秀明
  • Organizer: 第88回2013年度秋季低温工学・超電導学会
  • Place of Presentation: 名古屋
• [Presentation] 非絶縁REBCOパンケーキコイルにおける電流分布モード転移 - コイル冷却条件が電流分布モード転移に与える影響 (2013)
  • Author(s): 柳澤杏子、佐藤耕太,、柳澤吉紀、中込秀樹、金新哲、高橋雅人、前田秀明
  • Organizer: 第88回2013年度秋季低温工学・超電導学会
  • Place of Presentation: 名古屋
• [Presentation] スクライビングREBCO線材で巻いたダブルパンケーキコイルにおける遮蔽電流磁場 (2013)
  • Author(s): 許一、柳澤吉紀、金新哲、中込秀樹、前田 秀明
  • Organizer: 第88回2013年度秋季低温工学・超電導学会
  • Place of Presentation: 名古屋
• [Presentation] スクライビングREBCO線材を使用したダブルパンケーキコイルにおける遮蔽電流磁場の低減効果 (2013)
  • Author(s): 許一、中込秀樹、柳澤吉紀、金新哲、前田秀明
  • Organizer: 第4回超電導材料若手研究交流会
  • Place of Presentation: 東京
• [Presentation] 非絶縁REBCOパンケーキコイルにおける電流分布モード転移による熱暴走からの自律的な回復メカニズム (2013)
  • Author(s): 佐藤耕太、柳澤杏子、中込秀樹、柳澤吉紀、前田秀明
  • Organizer: 第4回超電導材料若手研究交流会
  • Place of Presentation: 東京