基于Ansoft的Bi系高温超导磁体临界电流的仿真计算  

CALCULATION OF THE CRITICAL CURRENT IN HIGH TEMPERATURE SUPERCONDUCTING MAGNETS BY Bi2223/Ag TAPES BASED ON ANSOFT

作　　者：李海涛[1] 魏佩瑜[1] 刘万强[1] 王荣印 王钦冰[2] 张昆[2] 

机构地区：[1]山东理工大学电气与电子工程学院,山东淄博255049 [2]国网淄博供电公司,山东淄博255000

出　　处：《低温物理学报》2016年第1期52-58,共7页Low Temperature Physical Letters

基　　金：国家自然科学基金(批准号:51407112)资助的课题~~

摘　　要：本文基于Bi2223/Ag超导带材的临界电流特性,探讨了高温超导磁体临界电流的计算方法,使用有限元电磁仿真软件Ansoft Maxwell建立了双饼线圈和小型超导磁体的模型,给出了磁场按方向分解后各分量的分布情况和找出各分量磁场的最大值的方法,利用各分量磁场最大值确定超导磁体的励磁直线,再依据超导磁体的励磁线和临界电流与各磁场分量的关系曲线确定其临界电流,并以实际双饼线圈和小型超导磁体对计算结果进行了验证,较小的误差证明了该计算方法的可行性.The calculation method of the critical current in high-temperature superconducting magnets was studied based on the critical current characteristics of Bi2223/Ag superconducting tapes. Models of a double pancake coil and a small superconducting magnet coil were established by using Ansoft Maxwell. This paper divides the magnetic field of the magnet into two fields by the axial and radial direction and finds the maximum value for each field. With these maximum values, two excitation lines could be determined, which combining the anisotropy of the Bi2223/Ag critical current, the calculation of the HTS magnets critical current could be made. This paper verified the calculation results with actual double pancake coils and a small superconducting magnet. The small errors proved the feasibility of the calculation method.

关 键 词：BI2223/AG 高温超导磁体 临界电流 ANSOFT 

分 类 号：O511.3[一般工业技术—材料科学与工程]