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Consideration of magnetizing system aiming for light-weighting of superconducting motor

Research Project

Project/Area Number 20K04449
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21010:Power engineering-related
Research InstitutionAshikaga University

Principal Investigator

YOKOYAMA Kazuya  足利大学, 工学部, 教授 (60313558)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords超伝導バルク体 / 回転機応用 / パルス着磁 / 軟鉄ヨーク / 三次元数値解析 / 数値解析 / 超伝導バルク磁石 / 超伝導モーター
Outline of Research at the Start

超伝導バルク磁石は小型・安価な装置で,従来の永久磁石や電磁石よりも強い磁場を容易に発生できる。これをモーター等の機器に組み込む場合,試料を着磁する方法としてパルス磁化法が有効であるが,磁石を強くするためには軟鉄ヨークが必要である。大きなヨークを用いることで捕捉磁場を改善できるが,機器の重量が増大する問題がある。本研究は,高い捕捉磁場を維持しつつ,軽量化を実現することを目標として,ヨークの大きさや形状と捕捉磁場の関係を実験と数値解析により検討する。

Outline of Final Research Achievements

Aiming to apply superconducting bulk magnets to rotating machines, we study to generate a strong magnetic field by pulsed-field magnetization (PFM) and to reduce the size and weight of the device at the same time. We focused on soft-iron yokes, which were used to expose the bulk to a magnetic field at longer time, and the magnetizing properties when using the conventional disk-shaped yoke and newly fabricated ring- and cross-shaped yokes were evaluated. PFM experiments were carried out by changing the temperatures and the amplitude of applied field. The total magnetic flux per unit weight of the cross-shaped yoke was twice that of the disk-shaped one. Moreover, a three-dimensional numerical model of our bulk PFM system was created and numerical analysis was performed under the same conditions as the experiment. The numerical results reproduced the experimental results, and the magnetization process was successfully visualized.

Academic Significance and Societal Importance of the Research Achievements

脱炭素社会のニーズから,大型風力発電の導入,航空機や大型船舶の推進装置の電動化などが検討されている。これらの実用化に向けては装置の小型・軽量化が重要な課題であり,小型な装置で永久磁石や電磁石を超える強い磁場を発生できる超伝導バルク磁石は有効な選択肢の一つである。磁化方法は,回転機の電機子巻線を用いて短時間で着磁できるパルス磁化法が有効な手法であるが,試料の性能を十分引き出すことが難しい問題がある。本研究は磁化装置の一部である軟鉄ヨークの形状を変更するという簡便・安価な手法であり,実用化には有効な手法であると考えられる。また,作成した数値解析モデルを着磁方法の改善等に用いることができる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (34 results)

All 2023 2022 2021 2020 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (26 results) (of which Int'l Joint Research: 9 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] A Numerical Analysis of Pulsed-Field Magnetization Characteristics of REBCO Bulk Magnets When Using Various Soft-Iron Yokes2023

    • Author(s)
      Yokoyama K.、Oka T.
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 33 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2023.3255173

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A numerical evaluation of magnetizing characteristic of bulk magnet excited by pulsed-field magnetization with different shaped soft-iron yokes2022

    • Author(s)
      Yokoyama Kazuya、Oka Tetsuo
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 32 Issue: 6 Pages: 1-1

    • DOI

      10.1109/tasc.2022.3163675

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Influence of Soft-Iron Yoke Thickness on the Magnetizing Characteristics of a Bulk Magnet Excited by Pulsed-Field Magnetization2022

    • Author(s)
      K. Yokoyama, T. Oka
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 32 Issue: 4 Pages: 1-5

    • DOI

      10.1109/tasc.2021.3135370

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Investigation of the Magnetizing Performance of a REBCO Bulk Magnet Excited by Pulsed Field Magnetization Using Cross-Shaped Iron Yokes2021

    • Author(s)
      Yokoyama Kazuya、Oka Tetsuo
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2021.3059722

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Influence of the Shape of Soft-Iron Yoke on Trapped Field Performance of HTS Bulk2020

    • Author(s)
      Yokoyama Kazuya、Oka Tetsuo
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 30 Issue: 4 Pages: 1-5

    • DOI

      10.1109/tasc.2020.2976064

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnetizing characteristic evaluation of REBCO bulk in PFM using different yokes2020

    • Author(s)
      Yokoyama K、Oka T
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1559 Issue: 1 Pages: 012047-012047

    • DOI

      10.1088/1742-6596/1559/1/012047

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Occurrence of Flux Jumps in MgB2 Bulk Magnets during Pulse-Field Magnetization2020

    • Author(s)
      Sakai N、Oka T、Yamanaka K、Dadiel L、Oki H、Ogawa J、Fukui S、Scheiter J、H??ler W、Yokoyama K、Noudem J、Miryala M、Murakami M
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1559 Issue: 1 Pages: 012024-012024

    • DOI

      10.1088/1742-6596/1559/1/012024

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] A numerical analysis of pulsed-field magnetization characteristic of REBCO bulk magnet when using various soft-iron yokes2023

    • Author(s)
      K. Yokoyama and T. Oka
    • Organizer
      2022 Applied Superconductivity Conference (ASC2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] REBCOバルク体のJcの不均一性を考慮したパルス着磁特性の解析2023

    • Author(s)
      横山和哉,YU CONG,TENDONGAFAC REGOBERT,SHANG JIAHAO,岡 徹雄
    • Organizer
      令和5年電気学会全国大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 軟鉄ヨークの形状がバルク磁石の捕捉磁場特性に及ぼす影響2023

    • Author(s)
      GOU SHUHANG,YU CONG,TENDONGAFAC REGOBERT,SHANG JIAHAO,横山和哉
    • Organizer
      令和4年度(第13回)電気学会東京支部栃木・群馬支所合同研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 軟鉄ヨークの厚さがパルス着磁特性に及ぼす影響の数値解析による評価2023

    • Author(s)
      TENDONGAFAC REGOBERT,YU CONG,SHANG JIAHAO,GOU SHUHANG,横山和哉
    • Organizer
      令和4年度(第13回)電気学会東京支部栃木・群馬支所合同研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 細孔バルク体における軟鉄ヨークが捕捉磁場特性に及ぼす影響2023

    • Author(s)
      YU CONG,TENDONGAFAC REGOBERT,SHANG JIAHAO,GOU SHUHANG,横山和哉
    • Organizer
      令和4年度(第13回)電気学会東京支部栃木・群馬支所合同研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] バルク体の不均一性を考慮したパルス着磁の数値解析2022

    • Author(s)
      横山和哉,YU CONG,SHANG JIAHAO,岡 徹雄
    • Organizer
      2022年度秋季第104回 低温工学・超電導学会研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 細孔加工したバルク体における軟鉄ヨークが捕捉磁場特性に及ぼす影響2022

    • Author(s)
      YU CONG,SHANG JIAHAO,横山和哉,岡 徹雄
    • Organizer
      2022年度秋季第104回 低温工学・超電導学会研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 軟鉄ヨークの形状がパルス着磁特性に及ぼす影響の数値解析による評価2022

    • Author(s)
      SHANG JIAHAO,YU CONG,横山和哉,岡 徹雄
    • Organizer
      2022年度秋季第104回 低温工学・超電導学会研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 強磁場発生装置としての超電導バルク磁石におけるパルス着磁の効率化に関する検討2022

    • Author(s)
      横山和哉,YU CONG,SHANG JIAHAO,岡 徹雄
    • Organizer
      第31回MAGDAコンファレンス in 鹿児島(MAGDA2022~電磁現象及び電磁力に関するコンファレンス~
    • Related Report
      2022 Annual Research Report
  • [Presentation] REBCOバルク体のパルス着磁特性に関する数値解析2022

    • Author(s)
      横山和哉,MAHMOUD ASAAD,YU CONG,岡 徹雄
    • Organizer
      2022年度春季第103回 低温工学・超電導学会研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パルス着磁されたバルク磁石におけるクロス型ヨークの厚みが捕捉磁場に及ぼす影響2022

    • Author(s)
      YU CONG, Asaad Mahmoud, 横山和哉, 岡徹雄
    • Organizer
      令和4年電気学会全国大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 厚みの異なる軟鉄ヨークを用いた時のパルス着磁されたバルク磁石の着磁特性の数値解析2022

    • Author(s)
      Asaad Mahmoud, YU CONG, 横山和哉, 岡徹雄
    • Organizer
      令和4年電気学会全国大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 形状の異なる軟鉄ヨークを用いたバルク磁石のパルス着磁特性の数値解析2022

    • Author(s)
      横山和哉, Asaad Mahmoud, YU CONG, 岡徹雄
    • Organizer
      令和4年電気学会全国大会
    • Related Report
      2021 Research-status Report
  • [Presentation] REBCOバルク体のパルス着磁における軟鉄ヨークに厚みが捕捉磁場特性に及ぼす影響2021

    • Author(s)
      横山和哉,岡徹雄
    • Organizer
      2021年度春季低温工学・超電導学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Influence of Soft-iron Yoke Thickness on the Magnetizing Characteristics of a Bulk Magnet Excited by Pulsed-field Magnetization2021

    • Author(s)
      Kazuya Yokoyama, Tetsuo
    • Organizer
      15th European Conference on Applied Superconductivity
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical evaluation of magnetizing characteristics of REBCO bulk magnet excited by pulsed-field magnetization with various soft-iron yokes2021

    • Author(s)
      Yokoyama Kazuya, Oka Tetsuo
    • Organizer
      12th International Workshop on Processing and Applications of Superconducting Bulk Materials
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] A numerical evaluation of magnetizing characteristic of bulk magnet excited by pulsed-field magnetization with different shaped soft-iron yokes2021

    • Author(s)
      Yokoyama Kazuya, Oka Tetsuo
    • Organizer
      27th International Conference on Magnet Technology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Magnetizing performance evaluation of bulk magnet activated by pulsed-field magnetization when using different soft-iron yokes2021

    • Author(s)
      Asaad Mahmoud, YU CONG, Yokoyama Kazuya, Oka Tetsuo
    • Organizer
      34th International Symposium on Superconductivity
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] パルス着磁における軟鉄ヨークとバルク磁石の捕捉磁場の関係2021

    • Author(s)
      YU CONG, Asaad Mahmoud, 横山和哉, 岡徹雄
    • Organizer
      第102回低温工学・超電導学会
    • Related Report
      2021 Research-status Report
  • [Presentation] パルス着磁されたHTSバルク磁石におけるヨークの大きさが着磁特性に及ぼす影響2021

    • Author(s)
      横山和哉,岡徹雄
    • Organizer
      令和3年電気学会全国大会
    • Related Report
      2020 Research-status Report
  • [Presentation] クロス型軟鉄ヨークを用いたREBCOバルク体のパルス着磁特性の評価2020

    • Author(s)
      横山和哉,岡徹雄
    • Organizer
      第99回春季低温工学・超電導学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Investigation of the magnetizing performance of a REBCO bulk magnet excited by pulsed field magnet-ization using cross-shaped iron yokes2020

    • Author(s)
      K. Yokoyama and T. Oka
    • Organizer
      Applied Superconductivity Conference 2020 (ASC2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Comparative Study of the Effect of Nano Activated Charcoal and Diamond on the Performance of MgB2 Bulk Superconductor2020

    • Author(s)
      J. Longji Dadiel, Pavan K. N Sugali, Naomichi Sakai, Hiraku Ogino, Taichiro Nishio, Kazuya Yokoyama, Tetsuo Oka, Masato Murakami
    • Organizer
      33rd International Symposium on Superconductivity (ISS2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Shielding Effect on Flux Trapping in Pulsed-Field Magnetizing for Mg-B Bulk Magnet2020

    • Author(s)
      Tetsuo Oka, Kengo Yamanaka, Kimiaki Sudo, Longji Dadiel, Jun Ogawa, Kazuya Yokoyama, Walfgang Häßler, Jacques Noudem, Kévin Berger, Naomichi Sakai, Miryala Muralidhar, Masato Murakami
    • Organizer
      33rd International Symposium on Superconductivity (ISS2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Trapped magnetic field characteristics of MgB2 bulk with different additive contents and MgB2 bulk with different types of additives by pulse magnetization2020

    • Author(s)
      Tetsuo Oka, Kengo Yamanaka, Masateru Sudo, DANIEL Longji, DORGE Remi, Kazuya Yokoyama, SCHEITER Juliana, Jun Ogawa, Satoshi Fukui, BERGER Kevin, BADICA Petre, NOUDEM Jacques
    • Organizer
      33rd International Symposium on Superconductivity (ISS2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] クロス型ヨークの大きさがバルク磁石の捕捉磁場特性に及ぼす影響2020

    • Author(s)
      横山和哉,岡徹雄
    • Organizer
      第100回春季低温工学・超電導学会
    • Related Report
      2020 Research-status Report
  • [Remarks] 足利大学工学部電気電子分野応用超伝導研究室

    • URL

      https://www2.ashitech.ac.jp/elec/yokoyama/

    • Related Report
      2022 Annual Research Report 2021 Research-status Report 2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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