Electricity: electrical systems and devices – Safety and protection of systems and devices – Superconductor protective circuits
Patent
1995-06-15
1998-06-02
Leja, Ronald W.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Superconductor protective circuits
361 10, H02H 900
Patent
active
057610177
ABSTRACT:
A high temperature superconductor fault current limiter and a method of using same. The fault current limiter comprises a high temperature superconductor material structure at least partially encapsulated in an epoxy having thermal conductivity properties that enable the superconductor to heat rapidly during a fault condition while preventing thermal runaway. The epoxy encapsulation decreases the critical current density of the superconductor material structure and increases the rate at which resistance increases with increasing current once the critical current density is exceeded. Preferably, the epoxy has thermal expansion properties approximately equal to the thermal expansion properties of the superconductor material structure.
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Applegate David S.
Hodge James D.
Klemptner Lori J.
Illinois Superconductor Corporation
Leja Ronald W.
Rechtin Michael D.
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