Quench behavior of YBa2Cu3O7 coated conductor with AC transport current

被引：18

作者：

Zhang, Guo Min ^{[1
]}

Knoll, David J. ^{[1
]}

Nguyen, Doan N. ^{[1
,2
]}

Sastry, Pamidi V. P. S. S. ^{[1
]}

Wang, Xiaorong ^{[1
,3
,4
]}

Schwartz, Justin ^{[1
,5
]}

机构：

[1] Florida State Univ, Ctr Adv Power Syst, Tallahassee, FL 32310 USA

[2] Florida State Univ, Dept Phys, Tallahassee, FL 32310 USA

[3] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[4] Florida State Univ, FAMU, Coll Engn, Dept Elect Engn, Tallahassee, FL 32310 USA

[5] Florida State Univ, FAMU, Coll Engn, Dept Mech Engn, Tallahassee, FL 32310 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2007年 / 17卷 / 04期

关键词：

alternating current (ac) quench; AC losses; minimum quench energy (MQE); normal zone propagation velocity; YBa2Cu3O7; tape;

D O I：

10.1109/TASC.2007.910162

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：

Alternating current (ac) loss and quench behavior measurements were performed on a YBa2Cu3Ox, coated conductor at 45 K. The minimum quench energies (MQEs) and the quench propagation velocities were measured as a function of transport current and frequency. AC losses were measured at the corresponding temperature and frequencies to quantify the internal thermal load during ac quench measurements. It was found that the direct current (dc) and ac quench behavior are similar, but that the MQE for de experiments is higher than the corresponding ac cases. This difference is not seen in the normal zone propagation velocity data, indicating that the difference in MQE is minimal if the ac losses are included in the energy calculation. The ac experiments show that the MQE and propagation velocity varies weakly with frequency.

引用

页码：3874 / 3879

页数：6

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