Kagoshima University · Graduate School of Science and Engineering · 准教授

Research keywordsElectric Power Engineering・超電導工学・電力工学・SMES・REBCOテープ・超伝導モータ・交流損失測定・数値解析

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• Junya Oomura, Go Sato, Akifumi Kawagoe . The calculation and measurement of electromagnetic energy flows for investigation of critical current estimation for high-temperature supercondu2026 · 担当区分： 責任著者 記述言語： 英語 掲載種別： 研究論文（国際会議プロシーディングス） 出版者・発行元： IOP Publishing DOI： 10.1088/1757-899X/1241/1/012026 Scopus
• Kei Shiohara, M. Sato, Y. Takahashi, K. Adachi, Akifumi Kawagoe, Teruo Izumi, Masataka Iwakuma . Stacked Superconducting Cables With Coated Conductors Using New Corrugated Tubes for Electric P2025 · 記述言語： 英語 掲載種別： 研究論文（学術雑誌） 出版者・発行元： IEEE Transactions on Applied Superconductivity Fully superconducting synchronous motors are very interesting for mobile applications such as aviation, thanks to their high output power density (kW&#x002F;kg). In order to obtain a large current capacity, multi-strand parallel conductors are usually used in armature coils but parallel conductors without transposition present non-uniform current sharing. In this manuscript, current sharing properties among three REBa₂Cu₃O<italic>_y</italic> parallel tapes with&#x002F;without a transposition in three-phase armature coil conditions, were investigated experimentally and analytically. The sample coils were prepared under the three-phase arrangement of armature coils for a two-pole rotating machine, and its branch currents were evaluated by Rogowski coils by applying AC transport current in liquid nitrogen at 77 K. We demonstrated that the introduction of the transposition was also an effective way to control the current sharing in rotating magnetic fields generated by the three-phase armature coils as well as single-phase situations. In addition, the influence of other phase armature coils on the current sharing was discussed via analytical calculations. DOI： 10.1109/TASC.2025.3538574 Scopus
• Current Distribution Among Transposed Eight- and 16-Parallel REBa2Cu3Oy Wires in Single-Phase Armature Coils2024
• Goki Kawasaki, Kazuki Nakamura, Yudai Kimura, Tomohiro Inoue, Yohei Masuda, Shun Miura, Akifumi Kawagoe, Masataka Iwakuma . Experimental Evaluation of Transposed Three-Parallel Conductors to A2024 · 記述言語： 英語 掲載種別： 研究論文（学術雑誌） 出版者・発行元： IEEE Transactions on Applied Superconductivity Fully superconducting synchronous motors are very interesting for mobile applications such as aviation, thanks to their high output power density (kW&#x002F;kg). In order to obtain a large current capacity, multi-strand parallel conductors are usually used in armature coils but parallel conductors without transposition present non-uniform current sharing. In this manuscript, current sharing properties among three REBa₂Cu₃O<italic>_y</italic> parallel tapes with&#x002F;without a transposition in three-phase armature coil conditions, were investigated experimentally and analytically. The sample coils were prepared under the three-phase arrangement of armature coils for a two-pole rotating machine, and its branch currents were evaluated by Rogowski coils by applying AC transport current in liquid nitrogen at 77 K. We demonstrated that the introduction of the transposition was also an effective way to control the current sharing in rotating magnetic fields generated by the three-phase armature coils as well as single-phase situations. In addition, the influence of other phase armature coils on the current sharing was discussed via analytical calculations. DOI： 10.1109/TASC.2024.3520549 Scopus

• REBCO超伝導線材で構成する大型導体の交流通電時安定限界に関する基礎研究2025 · 資金種別： 競争的資金 配分額： 468000円 （ 直接経費： 3600000円 、 間接経費： 108000円 ）
• 自然科学研究機構 核融合科学研究所一般共同研究「間接冷却高温超伝導コイル開発に関する基礎研究」2022 · 2022年4月 - 2023年3月
• 自然科学研究機構 核融合科学研究所一般共同研究「REBCO線材を積層した大型導体の電磁特性評価 」2022 · 2022年4月 - 2024年3月
• 戦略的創造研究推進事業（先端的低炭素化技術開発）2020 · 2020年4月 - 2021年10月

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