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Title: Fault current limiter and alternating current circuit breaker

Abstract

A solid-state circuit breaker and current limiter are disclosed for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time. 9 figs.

Inventors:
Issue Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
597148
Patent Number(s):
5,726,848
Application Number:
PAN: 8-646,836
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 240201; PA: EDB-98:042742; SN: 98001932737
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 10 Mar 1998
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; AC SYSTEMS; CIRCUIT BREAKERS; CURRENT LIMITERS; THYRISTORS; DESIGN; ELECTRICAL FAULTS

Citation Formats

Boenig, H.J. Fault current limiter and alternating current circuit breaker. United States: N. p., 1998. Web.
Boenig, H.J. Fault current limiter and alternating current circuit breaker. United States.
Boenig, H.J. Tue . "Fault current limiter and alternating current circuit breaker". United States.
@article{osti_597148,
title = {Fault current limiter and alternating current circuit breaker},
author = {Boenig, H.J.},
abstractNote = {A solid-state circuit breaker and current limiter are disclosed for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time. 9 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {3}
}