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System and method for quench and over-current protection of superconductor

United States Patent

May 31, 2005
View the Complete Patent at the US Patent & Trademark Office
A system and method for protecting a superconductor. The system may comprise a current sensor operable to detect a current flowing through the superconductor. The system may comprise a coolant temperature sensor operable to detect the temperature of a cryogenic coolant used to cool the superconductor to a superconductive state. The control circuit is operable to estimate the superconductor temperature based on the current flow and the coolant temperature. The system may also be operable to compare the estimated superconductor temperature to at least one threshold temperature and to initiate a corrective action when the superconductor temperature exceeds the at least one threshold temperature.
Huang; Xianrui (Clifton Park, NY), Laskaris; Evangelos Trifon (Schenectady, NY), Sivasubramaniam; Kiruba Haran (Clifton Park, NY), Bray; James William (Niskayuna, NY), Ryan; David Thomas (Niskayuna, NY), Fogarty; James Michael (Schenectady, NY), Steinbach; Albert Eugene (Schenectady, NY)
General Electric Company (Niskayuna, NY)
10/ 882,024
June 30, 2004
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT This invention was made with Government support under contract number DE-FC36-02GO11100 awarded by U.S. Dept. of Energy. The Government has certain rights in the invention.