Reversible operation of a high current superconductor switch based on the quench of high-resistance second generation high temperature superconducting wire is demonstrated. The quench is induced by a burst of an ac field generated by an inductively coupled radio-frequency coil. The switch makes a superconducting-to-normal transition within 5 ms and also has a rapid recovery to the superconducting state. The device has potential applications as an active current limiter or as a storage switch for superconducting magnetic energy storage systems. Operation in a full flux penetration/flow regime can effectively minimize the detrimental effects of the intrinsic conductor non-uniformity.
Received 14 May 2013Accepted 29 June 2013Published online 16 July 2013
This manuscript has been authored by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Research at Brookhaven National Laboratory was supported by the Advanced Research Project Agency-Energy (ARPA-E) GRIDS program, managed by Mark A. Johnson, Award No. DE-AR0000141. The authors wish to thank Ivo K. Dimitrov and Arnold Moodenbaugh for valuable comments and suggestions.