Abstract

In the practical applications, superconducting cable should be connected to the power supply by copper terminals. The lap joint between the superconducting cable and copper terminals has some significant effects on the current transfer length (CTL). Firstly, three kinds of soldering methods for an individual high temperature superconducting (HTS) tape are modeled and its CTL is calculated. Then, the distributions of electric field and current along a quasi-isotropic superconducting strand are simulated. Lastly, the CTL of a quasi-isotropic strand is measured by the distribution of electric potential along the strand. The results of simulation and experiment indicate different soldering methods have great influence on the CTL of the superconducting tape/strand.

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