Thermal Instability and Current-Voltage Scaling in Superconducting Fault Current Limiters
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.
Keywords
Cite
@article{arxiv.cond-mat/0312190,
title = {Thermal Instability and Current-Voltage Scaling in Superconducting Fault Current Limiters},
author = {Bernhard Zeimetz and K Tadinada and D E Eves and T A Coombs and J E Evetts and A M Campbell},
journal= {arXiv preprint arXiv:cond-mat/0312190},
year = {2009}
}
Comments
submitted to Superconductor Science and Technology (Dec 2003)