Bi2223/Ag和YBCO高温超导带材在交流过电流冲击下的失超及恢复特性研究  

Quench and recovery characteristics in Bi2223/Ag and YBCO HTS tapes at AC over-current

作　　者：杨晓乐[1,2,3] 李晓航[1,2] 张正臣[1,2,3] 周义刚[1,2,3] 杜晓纪[1,2,3] 叶立阳[1,2,3] 韩磊[1,2,3] 

机构地区：[1]中国科学院应用超导重点实验室,北京100190 [2]中国科学院电工研究所,北京100190 [3]中国科学院研究生院,北京100190

出　　处：《低温与超导》2009年第2期25-31,共7页Cryogenics and Superconductivity

基　　金：国家自然科学基金项目(50777063)支持

摘　　要：采用交流冲击实验装置测量了在不同交流过电流、持续交流工作电流及冲击时间情况下,不同散热条件下Bi2223/Ag和YBCO高温超导带材的电压、电流和温度随时间变化曲线,分析了冲击期间和冲击后带材各参数变化及失超恢复时间与散热条件和冲击参数的关系。研究结果表明:带材在交流过电流冲击下的失超和恢复过程主要取决于冲击能量和冲击过后带材内发热与散热的竞争效应。The voltage, current and temperature of Bi2223/Ag and YBCO tapes were measured and analyzed under different cooling conditions at AC over- current with various amplitude, duration time and different working currents. The correlation between the conditions of pulse and parameters of tapes during and after the pulse was analyzed. The results show that the quench recovery depends on the energy of the over - current, the work current and the eompetition of the cooling and heating in the tape.

关 键 词：Bi2223/Ag超导带材 YBCO超导带材 过流冲击 失超 恢复 

分 类 号：TM26[一般工业技术—材料科学与工程] TQ325.12[电气工程—电工理论与新技术]