FEM analysis of current limiting characteristics of a superconducting thin film current limiting device by the current vector potential method
FEM analysis of current limiting characteristics of a superconducting thin film current limiting device by the current vector potential method
复制标题
电流矢量势法对超导薄膜限流装置限流特性的有限元分析
DOI：
10.1109/tasc.2003.812972
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发表时间：
2003
影响因子：
1.8
通讯作者：
H. Ohsaki
中科院分区：
文献类型：
--
作者：
S. Sugita;H. Ohsaki
对电阻式超导限流器进行了数值分析。采用基于薄板近似的电流矢势有限元法，研究了单个超导限流器的限流特性和电流不平衡现象。通过求解电磁场、电路和热场的三维耦合问题，考虑了输运电流和温度的依赖性。采用基于幂律的E-J关系来描述超导体的电磁特性。这种分析方法使我们能够计算不仅限流特性，而且电流密度，磁通密度，在超导薄膜中的任何一点在任何时间的发热。
Numerical analysis of a resistive superconducting fault current limiter (SFCL) using superconducting thin film has been performed. The finite element method (FEM) based on the current vector potential with the thin plate approximation was used to study current limiting characteristics and current imbalance phenomenon of a single SFCL device. Transport current and temperature dependence were also taken into account by solving a three-dimensional coupled problem of electromagnetic field, an electric circuit and thermal field. An E-J relation based on the power law was adopted for modeling the electromagnetic property of superconductor. This analysis method enables us to calculate not only current limiting characteristics but also current density, flux density, and heat generation at any point in the superconducting thin film at any time.