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圆截面复合超导体中的电流分布以及超导体和金属层间存在的电流转移对实用超导体的稳定性有很大影响.本文采用一种二维模型对电流在圆截面复合超导体的分布及电流转移作了分析,得到了电流转移长度和接触电阻的关系,同时分析了在直流时圆截面复合超导体的损耗.结果表明,接触电阻越大,电流转移长度越长,这对于超导体在实际中运行的热稳定性和可靠性有重要的参考价值.
The current distribution in the circular cross-section composite superconductor and the current transfer between the superconductor and the metal layer have a great influence on the stability of the practical superconductor.In this paper, a two-dimensional model was used to analyze the current distribution in the cross-section composite superconductor and the current transfer The relationship between the length of the current transfer and the contact resistance is obtained and the loss of the circular cross-section composite superconductor is analyzed at the same time.The results show that the larger the contact resistance is, the longer the current transfer length is, which is more important for the thermal stability of the superconductor in practical operation Sexual and reliability have important reference value.