High-temperature AC superconducting magnets for a magnetic levitation system
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United States of America Patent
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Sep 16, 1997
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N/A
app pub date -
Jul 14, 1994
filing date -
Jul 14, 1994
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Expired
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Abstract
An electromagnet for a MAGLEV system incorporates at least one superconducting coil, operating in AC mode, which surrounds a multiple-pole iron core and is constructed from a layer of epoxy-impregnated pancake coils assembled together along a common axis within a cryostat. The windings of each pancake coil may be constructed from predetermined lengths of Bi(2223) superconductor tape. The coil preferably operates at 77 K. but any temperature lying in a range of 5 K. to 80 K. may be used. Two- and six-pole/coil magnets operating in either AC or DC mode are specifically disclosed.
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