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Solid-state circuit breaker with current-limiting characteristic using a superconducting coil

Patent ·
OSTI ID:6175671

A thyristor bridge interposes an ac source and a load. A series connected DC source and superconducting coil within the bridge biases the thyristors thereof so as to permit bidirectional ac current flow therethrough under normal operating conditions. Upon a fault condition a control circuit triggers the thyristors so as to reduce ac current flow therethrough to zero in less than two eyeles and to open the bridge thereafter. Upon a temporary overload condition the control circuit triggers the thyristors so as to limit ac current flow therethrough to an acceptable level.

DOE Contract Number:
W-7405-ENG-36
Assignee:
ERA-08-035760; EDB-83-121046
Patent Number(s):
None
Application Number:
ON: DE83013168
OSTI ID:
6175671
Country of Publication:
United States
Language:
English

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Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
CIRCUIT BREAKERS
ELECTRICAL EQUIPMENT
ELECTRICAL FAULTS
ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
POWER SYSTEMS
SEMICONDUCTOR DEVICES
SPECIFICATIONS
SUPERCONDUCTING COILS
THYRISTORS