YBCO高温超导体交流损耗与温升特性的数值仿真研究  

Numerical simulation research on AC loss and temperature rise characteristics of YBCO high temperature superconductor

作　　者：张荔敏[1] 刘力源[1] 朱运鹏 王刚[1] 羊新胜[1] 张勇[1] 赵勇[1,2] 

机构地区：[1]西南交通大学磁浮技术与磁浮列车教育部重点实验室超导与新能源研究开发中心,成都610031 [2]新南威尔士大学材料科学与工程学院

出　　处：《低温与超导》2015年第6期1-6,41,共7页Cryogenics and Superconductivity

基　　金：国家磁约束核聚变能研究专项基金(2011GB112001;2013GB110001);国际合作项目(2013DFA51050);国家自然科学基金(51271155;51377138);中央高校基本科研业务费资助项目(SWJTU11ZT31;2682013CX004);四川省科技计划项目(2011JY0031;2011JY0130)资助课题

摘　　要：高温超导磁体运行过程中,磁体的热稳定性是磁体能否安全运行和实用化的重要指标。在磁体热稳定性的相关研究中,超导磁体在运行过程中的交流损耗和热传导特性是两个值得研究的问题。因此,文中运用商业有限元软件Comsol构造了YBCO高温超导体的数值仿真模型,通过Comsol中的AC/DC模块和热传导模块的相互耦合,在给予不同频率和不同幅值的交变外磁场激励下,对YBCO高温超导体在运行过程中的温升特性进行实时监测和分析,并计算出其交流损耗。为避免超导体失超,保证其安全稳定运行提供一定的指导。In the process of running high temperature superconducting（ HTS） magnet,the thermal stability of magnets is one of the important indicators for its safe operation and practical application as the thermal stability related research of magnet,the ac loss and heat transfer characteristics are two problems which are to be studied worthy of studying. Therefore,using the commercial finite element software Comsol in this paper,the numerical simulation model of YBCO HTS was constructed. Through introducing AC / DC module and heat transfer module,the temperature characteristics of YBCO HTS was really- time monitored and analyzed and its AC loss was calculated in a variety of alternating magnetic field excitation and under the condition of different frequencies,which was to avoid quench and provide some reference for the stable operation of HTS.

关 键 词：高温超导体 交流损耗 热传导 

分 类 号：TM26[一般工业技术—材料科学与工程]