摘要
高温超导材料的实际应用中其装置两端的电压保持恒定,而现有的研究都是建立在恒流的基础上。基于此,通过建立恒压下Bi2223/Ag高温超导带材的一维失超传播模型,用数值模拟方法研究了Bi2223/Ag高温超导带在恒压作用下的失超传播行为。通过计算给出了Bi2223/Ag带材在恒压下的最小失超能(MQE)、失超传播速度(NZPV)及其变化规律,同时对恒流和恒压两种条件下的失超行为进行了对比,发现恒压下的最小失超能明显小于恒流下的最小失超能,同时恒压下的失超传播比恒流更慢。
Under many situations of engineering application of HTS tapes, the tapes are subjected to constant voltages, but most of our study of HTS tapes are under constant currents. Therefore, quench behavior of Bi2223/Ag tape under constant voltage were studied in this paper. A numerical model of Bi2223/Ag tapes under constant voltages was presented in this paper, based on which the quench behavior of Bi2223/Ag tapes was investigated through numerical simulations. The numerical result of the minimum quench energy （MQE） and normal zone propagation velocity （NZPV） were obtained and we presented the comparison between constant voltages and constant currents. The results indicate that the MQE calculated at constant voltages is less than the MQE calculated at constant currents and the quench propagation at constant voltages are slow than the quench propagation at constantcurrents.
出处
《低温与超导》
CAS
北大核心
2015年第5期44-48,共5页
Cryogenics and Superconductivity
关键词
高温超导带材
恒压
最小失超能
失超传播速度
HTS tapes, Constant voltage, Minimum quench energy（MQE） , Normal zone propagation velocity（NZPV）
