Solid-state circuit breaker with current limiting characteristic

Details Solid-state circuit breaker with current limiting characteristic Solid-state circuit breaker with current limiting characteristic

1982-08-16

1984-12-25

Goldberg, E. A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

361 19, 323360, 323363, H02H 700, H02H 900

Patent

active

044907699

ABSTRACT:
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.

REFERENCES:
patent: 3723816 (1973-03-01), Pollard
patent: 4045823 (1977-08-01), Parton
patent: 4438474 (1984-03-01), Paice

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