High-speed superconducting persistent switch
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United States of America Patent
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Nov 13, 2001
Grant Date -
N/A
app pub date -
Oct 7, 1999
filing date -
Apr 11, 1997
priority date (Note) -
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Abstract
A superconducting magnetic energy storage system, including a superconducting persistent switch, is disclosed. The system includes a superconducting magnet connected in parallel with the persistent switch, both contained within a cryostat that is maintained at superconducting temperatures. Leads extending from the parallel connection of the magnet and switch are coupled to a power conditioning system, which in turn is coupled to a system load for which the system provides backup power. The disclosed persistent switch is fabricated as a wire having multiple superconducting strands within, and directly in contact with, an electrically conductive but non-superconducting stabilizer material. The persistent switch is normalized into a resistive state, to apply the stored energy to the load, by applying a rapid rise title current to the wire.
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