Quench characteristics of HTS tapes with alternating currents above their critical currents

被引:15
作者
Yim, SW [1 ]
Choi, HS
Hyun, OB
Hwang, SD
Han, BS
机构
[1] Korea Elect Power Res Inst, Taejon, South Korea
[2] Chonbuk Natl Univ, Dept Elect Engn, Chonju, South Korea
关键词
HTS tapes; over-current; quench development; resistance increase; superconducting region;
D O I
10.1109/TASC.2003.812077
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this study, the dependence of quench characteristics of HTS tapes on the amplitude of current and duration time was investigated by applying alternating current (AC) that is several times over the critical currents of HTS tapes. When the applied AC(peak) was up to three times of critical current, the joule heat was not cooled down by LN2 completely. However, when the over-current reached four times, of critical current, the superconducting region began to decrease gradually and the total resistance of HTS tapes increased rapidly. Finally, we analyzed the quench development using voltage-current characteristics and. examined the influence of pitch angles on resistance increase.
引用
收藏
页码:2968 / 2971
页数:4
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