隣接磁性体を有する高温超電導線材の通電特性及び自己磁界分布

カテゴリ: 部門大会

論文No: 72

グループ名: 【B】平成18年電気学会電力・エネルギー部門大会講演論文集

発行日: 2006/09/13

タイトル(英語): The Transport Characteristics and the Self Field Distribution for High-Tc Superconductor with Neighboring Magnetic Materials

著者名: 朱鎮弘 (岡山大学),金 錫範(岡山大学),村瀬 暁(岡山大学)

著者名(英語): Jin-Hong Joo(Okayama University),SeokBeom Kim(Okayama University),Satoru Murase(Okayama University)

キーワード: 高温超電導線材|臨界電流|自己磁場|隣接する磁性体|交流通電損失|HTS tape|critical current|self field|neighboring magnetic materials|AC transport current loss

要約(日本語): Many high-Tc superconducting (HTS) tape manufactures make an effort to improve the transport characteristics of HTS tapes. When AC or DC current flows in the HTS tape, AC or DC magnetic self-fields are induced around the conductor by the current and these self-fields affect on the AC loss and the critical current like the transport characteristics of HTS tapes. The spatial distribution and magnitude of the self-field are variable due to the neighboring materials on the HTS tape. In this paper, the relation between the transport characteristics and the self field distribution of HTS tapes with paralleled ferromagnetic material (Ni tape) and/or diamagnetic material (BSCCO tape) is experimentally investigated. The self-field by the current flowing in the sample was measured with Hall sensor magnetometer which was able to detect simultaneously the both of the magnetic field components (the parallel and the perpendicular transverse magnetic fields) around the tape. The critical currents of HTS tapes with paralleled the Ni tape are slightly decreased and the transport current losses markedly increased. However, the critical currents and transport current losses of HTS tapes with paralleled BSCCO tape showed more improved performance than those of single HTS tape. We explain these results using the change of the spatial distribution and magnitude of self-field on HTS tapes by the neighboring magnetic materials.

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