Fault current limiter and alternating current circuit breaker
Abstract
A solid-state circuit breaker and current limiter 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.
- Inventors:
-
- Los Alamos, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 871417
- Patent Number(s):
- 5726848
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H02 - GENERATION H02H - EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- fault; current; limiter; alternating; circuit; breaker; solid-state; load; served; source; impedance; comprising; thyristor; bridge; interposed; legs; nodes; node; connected; coil; third; fourth; value; calculated; limit; flowing; therethrough; predetermined; control; means; limiting; flow; conditions; level; gating; quickly; reduce; zero; thereafter; maintain; electrically; condition; preventing; period; time; thyristor bridge; current circuit; circuit breaker; alternating current; current flow; current source; current flowing; predetermined value; control means; flowing therethrough; fault current; predetermined level; predetermined period; current limiter; solid-state circuit; fault condition; source impedance; limiter comprising; current limit; /361/
Citation Formats
Boenig, Heinrich J. Fault current limiter and alternating current circuit breaker. United States: N. p., 1998.
Web.
Boenig, Heinrich J. Fault current limiter and alternating current circuit breaker. United States.
Boenig, Heinrich J. Thu .
"Fault current limiter and alternating current circuit breaker". United States. https://www.osti.gov/servlets/purl/871417.
@article{osti_871417,
title = {Fault current limiter and alternating current circuit breaker},
author = {Boenig, Heinrich J},
abstractNote = {A solid-state circuit breaker and current limiter 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}