2008年6月
Performance improvement of YBCO coil for high-field HTS-SMES based on homogenized distribution of magnetically-mechanically influenced critical current
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
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- 巻
- 18
- 号
- 2
- 開始ページ
- 758
- 終了ページ
- 761
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1109/TASC.2008.921890
- 出版者・発行元
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Generally speaking for a HTS coil, perpendicular magnetic field to conductor's broad surface should be suppressed as small as possible in relation to the magnetic anisotropy. This is a reason why toroidal coil with relatively many elementary coils is expected for HTS-SMES. On the other hand, from the point of view of the homogenization of critical current distribution in the coil, perpendicular field and parallel field should be balanced corresponding to the ratio of the magnetic anisotropy. This means that a certain level of the perpendicular field is effective to reduce local heat generation in the coil. Furthermore, this concept is especially reasonable for a high-field coil with usual winding method (flat-wise winding) because the perpendicular field does not induce hoop stress which decreases the critical current. In this paper, we show these findings through an optimal design of a MOCVD-YBCO toroidal coil for 2 GJ class SMES taking account of magnetically and mechanically influenced J - E characteristics.
- リンク情報
- ID情報
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- DOI : 10.1109/TASC.2008.921890
- ISSN : 1051-8223
- Web of Science ID : WOS:000256625700162