高温超导带材及线圈的交流损耗(英文)  

AC Losses of High Temperature Superconducting Tapes and Coils

作　　者：张国民[1] 林良真[1] 

机构地区：[1]中国科学院电工研究所,北京100080

出　　处：《中国科学院研究生院学报》2006年第5期713-719,共7页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：supported bythe National Natural Science Foundation of China (50137020)

摘　　要：将描述超导体各向异性的有效质量理论,即各向异性Ginzburg—Landau理论(G—L理论) ,与临界态模型(CS模型)相结合,建立了高温超导带材的交流损耗与临界电流的各向异性理论模型;利用不可逆应变的定义,给出了临界电流与应变的关系,并利用临界电流与应变的关系及Norris方程,导出了高温超导带材的交流损耗与应变的关系;利用所建立的交流损耗与临界电流的各向异性理论公式,建立了依据超导短样带材的特性(临界电流,交流损耗) ,计算高温超导线圈交流损耗的数值计算模型.Anisotropic theoretical models of critical current and AC loss of high superconducting （HTS） tape in both DC and AC background fields were established based on mass theory （the anisotropy Ginzburg--Landau theory） and the critical state model （CS temperature the effective model）. A formula to describe the relationship between critical current and stress/strain was proposed by using the definition of irreversible strain. The relation between AC loss and stress/strain was developed based on the critical current-strain relation and Norris＇ formula. A numerical model to calculate AC loss of HTS coil was developed from the anisotropy theory of AC loss and critical current of short sample.

关 键 词：高温超导 交流损耗 临界电流 BI2223/AG带材 

分 类 号：O511.9[理学—低温物理]