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Title: Optically triggered high voltage switch network and method for switching a high voltage

Abstract

An optically triggered solid state switch and method for switching a high voltage electrical current. A plurality of solid state switches (350) are connected in series for controlling electrical current flow between a compensation capacitor (112) and ground in a reactive power compensator (50, 50') that monitors the voltage and current flowing through each of three distribution lines (52a, 52b and 52c), which are supplying three-phase power to one or more inductive loads. An optical transmitter (100) controlled by the reactive power compensation system produces light pulses that are conveyed over optical fibers (102) to a switch driver (110') that includes a plurality of series connected optical triger circuits (288). Each of the optical trigger circuits controls a pair of the solid state switches and includes a plurality of series connected resistors (294, 326, 330, and 334) that equalize or balance the potential across the plurality of trigger circuits. The trigger circuits are connected to one of the distribution lines through a trigger capacitor (340). In each switch driver, the light signals activate a phototransistor (300) so that an electrical current flows from one of the energy reservoir capacitors through a pulse transformer (306) in the trigger circuit, producing gatemore » signals that turn on the pair of serially connected solid state switches (350).

Inventors:
 [1];  [2];  [3]
+ Show Inventor Affiliations
  1. Renton, WA
  2. Everett, WA
  3. Mountlake Terrace, WA
Issue Date:
Research Org.:
Univ. of Washington, Seattle, WA (United States)
OSTI Identifier:
868639
Patent Number(s):
5180963
Application Number:
07/697,673
Assignee:
Board of Regents of University of Washington (Seattle, WA)
Patent Classifications (CPCs):
G - PHYSICS G05 - CONTROLLING G05F - SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
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DOE Contract Number:  
AI79-87BP65584
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
optically; triggered; voltage; switch; network; method; switching; solid; electrical; current; plurality; switches; 350; connected; series; controlling; flow; compensation; capacitor; 112; ground; reactive; power; compensator; 50; monitors; flowing; distribution; lines; 52a; 52b; 52c; supplying; three-phase; inductive; loads; optical; transmitter; 100; controlled; produces; light; pulses; conveyed; fibers; 102; driver; 110; triger; circuits; 288; trigger; controls; pair; resistors; 294; 326; 330; 334; equalize; balance; potential; 340; signals; activate; phototransistor; 300; flows; energy; reservoir; capacitors; pulse; transformer; 306; circuit; producing; gate; serially; pulse transformer; trigger circuit; power compensator; inductive load; voltage electrical; series connected; reactive power; serially connected; light pulses; optical fibers; optical fiber; current flow; electrical current; current flowing; current flows; light pulse; light signal; light signals; optically triggered; optical transmitter; distribution lines; connected solid; inductive loads; phase power; voltage electric; voltage switch; power compensation; distribution line; /323/327/

Citation Formats

El-Sharkawi, Mohamed A, Andexler, George, and Silberkleit, Lee I. Optically triggered high voltage switch network and method for switching a high voltage. United States: N. p., 1993. Web.
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El-Sharkawi, Mohamed A, Andexler, George, & Silberkleit, Lee I. Optically triggered high voltage switch network and method for switching a high voltage. United States.
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El-Sharkawi, Mohamed A, Andexler, George, and Silberkleit, Lee I. Tue . "Optically triggered high voltage switch network and method for switching a high voltage". United States. https://www.osti.gov/servlets/purl/868639.
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@article{osti_868639,
title = {Optically triggered high voltage switch network and method for switching a high voltage},
author = {El-Sharkawi, Mohamed A and Andexler, George and Silberkleit, Lee I},
abstractNote = {An optically triggered solid state switch and method for switching a high voltage electrical current. A plurality of solid state switches (350) are connected in series for controlling electrical current flow between a compensation capacitor (112) and ground in a reactive power compensator (50, 50') that monitors the voltage and current flowing through each of three distribution lines (52a, 52b and 52c), which are supplying three-phase power to one or more inductive loads. An optical transmitter (100) controlled by the reactive power compensation system produces light pulses that are conveyed over optical fibers (102) to a switch driver (110') that includes a plurality of series connected optical triger circuits (288). Each of the optical trigger circuits controls a pair of the solid state switches and includes a plurality of series connected resistors (294, 326, 330, and 334) that equalize or balance the potential across the plurality of trigger circuits. The trigger circuits are connected to one of the distribution lines through a trigger capacitor (340). In each switch driver, the light signals activate a phototransistor (300) so that an electrical current flows from one of the energy reservoir capacitors through a pulse transformer (306) in the trigger circuit, producing gate signals that turn on the pair of serially connected solid state switches (350).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}
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