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arXiv · cond-mat/0312190

Thermal Instability and Current-Voltage Scaling in Superconducting Fault Current Limiters

Bernhard Zeimetz·K Tadinada·D E Eves·T A Coombs·J E Evetts·A M Campbell
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Abstract

We have developed a computer model for the simulation of resistive superconducting fault current limiters in three dimensions. The program calculates the electromagnetic and thermal response of a superconductor to a time-dependent overload voltage, with different possible cooling conditions for the surfaces, and locally variable superconducting and thermal properties. We find that the cryogen boil-off parameters critically influence the stability of a limiter. The recovery time after a fault increases strongly with thickness. Above a critical thickness, the temperature is unstable even for a small applied AC voltage. The maximum voltage and maximum current during a short fault are correlated by a simple exponential law.

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Bernhard Zeimetz, K Tadinada, D E Eves, T A Coombs, J E Evetts, A M Campbell. 2003-12-08. Thermal Instability and Current-Voltage Scaling in Superconducting Fault Current Limiters. https://doi.org/10.1088/0953-2048%2F17%2F4%2F016

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