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Characteristics of critical current of high-Tc superconducting magnets wound with various tensions

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7 Author(s)
Min Cheol Ahn ; Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea ; Min Chul Kim ; Duck Kweon Bae ; Seungje Lee
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High-Tc superconducting fault current limiters (SFCLs) with a DC reactor limit fault currents using the inductance of the DC reactor. Therefore, manufacture of the DC reactor is very important in developing this type of SFCL. The DC reactor makes use of high-Tc superconducting (HTS) magnets. Because high-Tc superconducting wires are rectangular tape and contain ceramic compounds, the winding method and the tension control of the HTS magnet are different from those of normal conductor magnets. In this research, we design and manufacture a winding machine for HTS magnets. We fabricate four HTS magnets wound with various tension. Characteristics of the fabricated magnets are observed through measurements of critical currents. This paper suggests an optimal winding method of HTS magnets.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:13 ,  Issue: 2 )