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

Patent · Mon Dec 24 23:00:00 EST 1984

OSTI ID:5780703

Boenig, H J

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 cycles 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.

• Assignee: The United States of America as represented by the United States Department of Energy
• Patent Number(s): US 4490769
• OSTI ID: 5780703
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
AC SYSTEMS
ALTERNATING CURRENT
CIRCUIT BREAKERS
CURRENT LIMITERS
CURRENTS
DC SYSTEMS
DESIGN
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
POWER SYSTEMS
PULSE CIRCUITS
SEMICONDUCTOR DEVICES
SUPERCONDUCTING COILS
THYRISTORS
TRIGGER CIRCUITS