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Guidelines of basic coil design and cooling process of a REBCO coil for suppressing deterioration of current carrying characteristics in cooling process.

Research Project

Project/Area Number 26289070
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Power engineering/Power conversion/Electric machinery
Research InstitutionTohoku University

Principal Investigator

TSUDA Makoto  東北大学, 工学(系)研究科(研究院), 教授 (10267411)

Co-Investigator(Kenkyū-buntansha) 宮城 大輔  東北大学, 工学(系)研究科(研究院), 准教授 (10346413)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2014: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Keywords超電導コイル / 冷却 / 応力 / 剥離 / 熱応力 / 超電コイル
Outline of Final Research Achievements

A pre-cooling process is very important to suppress the deterioration of the current carrying characteristics of a REBCO coil caused by the transient thermal stress generated in the LN2 cooling process. We investigated the suitable pre-cooling temperature for suppressing the transient thermal stress within the coil. The suitable temperature was around 90 K and the temperature was obtained at the height of about 10 mm from the LN2 surface. Selection of the suitable coil material was also important to suppress the transient thermal stress. The deterioration of the current carrying characteristics greatly depends on not only the peeling stress in the cooling process applied to the superconducting layer of the REBCO tape but also the connecting method between the coil end and the current lead. Therefore, we should design, manufacture, and cool the REBCO coil in consideration of the above deterioration factors to suppress the quench and the fire damage of the coil.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (7 results)

All 2016 2015

All Presentation (7 results)

  • [Presentation] Y系超電導コイル浸漬冷却時の過渡熱応力低減に関する基礎研究2016

    • Author(s)
      加藤雅大
    • Organizer
      電気関係学会東北支部連合大会
    • Place of Presentation
      東北工業大学(宮城県仙台市)
    • Year and Date
      2016-08-30
    • Related Report
      2016 Annual Research Report
  • [Presentation] Y系超電導コイル冷却時の過渡熱応力に関する基礎研究2016

    • Author(s)
      加藤雄大
    • Organizer
      平成28年電気学会全国大会
    • Place of Presentation
      東北大学(仙台)
    • Year and Date
      2016-03-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] 熱的測定法を用いた伝導冷却型Y系超電導コイルの交流損失評価2016

    • Author(s)
      櫻井周平
    • Organizer
      平成28年電気学会全国大会
    • Place of Presentation
      東北大学(仙台)
    • Year and Date
      2016-03-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] オーバーシュート法を適用したReBCOコイルにおける遮蔽電流磁場と磁場変動率の関係2016

    • Author(s)
      三浦英明
    • Organizer
      平成28年電気学会全国大会
    • Place of Presentation
      東北大学(仙台)
    • Year and Date
      2016-03-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] ReBCOテープ線の短尺試料における遮蔽電流磁場の減衰特性評価2015

    • Author(s)
      三浦英明
    • Organizer
      2015年度秋季低温工学・超電導学会
    • Place of Presentation
      姫路商工会議所(姫路)
    • Year and Date
      2015-12-02
    • Related Report
      2015 Annual Research Report
  • [Presentation] ReBCOコイルの励磁方法が遮蔽電流磁場の減衰特性に与える影響2015

    • Author(s)
      高野玲央
    • Organizer
      2015年度秋季低温工学・超電導学会
    • Place of Presentation
      姫路商工会議所(姫路)
    • Year and Date
      2015-12-02
    • Related Report
      2015 Annual Research Report
  • [Presentation] 伝導冷却型高温超電導コイルにおける交流損失評価法の基礎検討2015

    • Author(s)
      福島規至
    • Organizer
      2015年度秋季低温工学・超電導学会
    • Place of Presentation
      姫路商工会議所(姫路)
    • Year and Date
      2015-12-02
    • Related Report
      2015 Annual Research Report

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Published: 2014-04-04   Modified: 2018-03-22  

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