2014年11月
Experimental and numerical investigation of screening currents induced in a Bi-2223/Ag double pancake coil for space applications
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
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- 巻
- 27
- 号
- 11
- 開始ページ
- 115005
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1088/0953-2048/27/11/115005
- 出版者・発行元
- IOP PUBLISHING LTD
We modelled the screening currents (I-s) induced in high-temperature superconducting (HTS) coils to develop a method for the characterization and design of HTS magnets for space applications. The analysis made use of so-called percolation depinning and flux creep models to describe the current density versus the electric field in HTS tapes. We compared the model results with the experimental data obtained from a Bi-2223/Ag double pancake coil. The experimental residual magnetization due to the I-s in the Bi-2223/Ag coil can be effectively modelled, assuming an equivalent loop length of approximately 9 mm for the I-s in the coil. The values calculated from the method quantitatively agreed with the results for various experimental conditions. We also successfully modelled the hysteresis of the magnetization due to the I-s. These results demonstrate the validity of our model for the I-s, which considers the effects of flux creep and smaller I-s loops in the multi-filamentary Bi-2223/Ag tape.
- リンク情報
- ID情報
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- DOI : 10.1088/0953-2048/27/11/115005
- ISSN : 0953-2048
- eISSN : 1361-6668
- Web of Science ID : WOS:000346196100006