Development of an innovative quick-shutdown and protection method as a key technology for high-temperature superconducting magnets

2019 Fiscal Year Final Research Report

• Project/Area Number: 18K18864
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 21:Electrical and electronic engineering and related fields
• Research Institution: Kyushu University
• Principal Investigator: Higashikawa Kohei 九州大学, システム情報科学研究院, 准教授 (40599651)
• Project Period (FY): 2018-06-29 – 2020-03-31
• Keywords: 高温超伝導コイル / 保護

Outline of Final Research Achievements

Superconducting technology have been realizing high-field electro-magnet applications which cannot be realized by other technologies. Recent progress in developing high-temperature superconducting (HTS) wires is now expected to enhance their performance dramatically compared with the case by conventional low-temperature superconducting (LTS) wires. On the other hand, protection for HTS magnet coils has been recognized as a significant issue to be established for practical use. In this project, protection operation of a HTS coil was successfully demonstrated based on an innovative method.

Free Research Field

超伝導工学

Academic Significance and Societal Importance of the Research Achievements

本研究による成果は、高温超伝導マグネット応用においてボトルネックとなっていた過電流による巻線の焼損と過電圧による巻線の焼損の双方を回避するものであり、同応用における従来の設計制約を取り払い、同応用の拡大・展開に大きく資するものである。具体的には、高温超伝導線材において焼損を防ぐために付加されている銅などの厚い安定化層が不要になり、実効的な電流密度の大幅な向上による応用機器の小型化や線材使用量の低減が期待される。