CA2164819A1 - Soft Switching Circuitry - Google Patents

Soft Switching Circuitry

Info

Publication number
CA2164819A1
CA2164819A1 CA2164819A CA2164819A CA2164819A1 CA 2164819 A1 CA2164819 A1 CA 2164819A1 CA 2164819 A CA2164819 A CA 2164819A CA 2164819 A CA2164819 A CA 2164819A CA 2164819 A1 CA2164819 A1 CA 2164819A1
Authority
CA
Canada
Prior art keywords
voltage
switching circuitry
circuit
soft switching
solid state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2164819A
Other languages
French (fr)
Other versions
CA2164819C (en
Inventor
David Leslie Lloyd Peach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southpower Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2164819A1 publication Critical patent/CA2164819A1/en
Application granted granted Critical
Publication of CA2164819C publication Critical patent/CA2164819C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/625—Regulating voltage or current wherein it is irrelevant whether the variable actually regulated is ac or dc
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
    • H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/40—Controlling the intensity of light discontinuously
    • H05B41/42—Controlling the intensity of light discontinuously in two steps only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)
  • Ac-Ac Conversion (AREA)
  • Amplifiers (AREA)
  • Noise Elimination (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

Switching circuitry for use with an autotransfortner for the smooth transition of voltage output from a circuit of either d.c. or a.c., between a higher and a lower voltage. The circuit includes at least one, preferably two, variable resistors (13) comprising a first solid state switch (10), an inductor (11) and a resistor (12), in which the variable resistor (13) is connected to the conductance side of the switch and wherein the circuit is connected to the voltage ouput of an autotransformer. If the solid state switch used are FETs the variable resistor (13) is placed within a bridge rectifier (D2-D5). Transition time for movement of the voltage between two levels is approximately one second.
CA002164819A 1993-06-17 1994-06-14 Soft switching circuitry Expired - Fee Related CA2164819C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ247913 1993-06-17
NZ247913A NZ247913A (en) 1993-06-17 1993-06-17 Softly switched voltage output circuit with autotransformer

Publications (2)

Publication Number Publication Date
CA2164819A1 true CA2164819A1 (en) 1995-01-05
CA2164819C CA2164819C (en) 1998-11-10

Family

ID=19924387

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002164819A Expired - Fee Related CA2164819C (en) 1993-06-17 1994-06-14 Soft switching circuitry

Country Status (10)

Country Link
EP (1) EP0704144A4 (en)
AU (1) AU673612B2 (en)
CA (1) CA2164819C (en)
FI (1) FI956017A (en)
IL (1) IL109986A (en)
IN (1) IN184266B (en)
NO (1) NO955012D0 (en)
NZ (1) NZ247913A (en)
WO (1) WO1995001084A1 (en)
ZA (1) ZA944282B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20040371A1 (en) 2004-07-21 2004-10-21 Seko Italia S P A DRIVING DEVICE FOR AN ELECTROMAGNET, IN PARTICULAR FOR THE OPERATION OF PUMPS.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283234A (en) * 1964-01-10 1966-11-01 Gen Electric Control for reversible motor with instantaneous current limit
US3921035A (en) * 1974-01-15 1975-11-18 Esquire Inc Solid state switching circuit
US4201938A (en) * 1978-10-02 1980-05-06 Siemens-Allis, Inc. Voltage regulator which eliminates arcing during tap changes
CH650888A5 (en) * 1980-03-25 1985-08-15 Rudolf Muehling Power changeover device for gas-discharge lamps
US4513224A (en) * 1982-09-22 1985-04-23 Pacific Power Control, Inc. Fluorescent-lighting-system voltage controller
US4701645A (en) * 1985-01-24 1987-10-20 Cox & Company, Inc. Switching circuit with low conducted electromagnetic interference characteristics
US4736268A (en) * 1986-12-18 1988-04-05 Westinghouse Electric Corp. High frequency AC solid state switch
US5047694A (en) * 1989-06-30 1991-09-10 Hubbell Incorporated Lamp starting circuit
GB2242587B (en) * 1990-02-01 1994-05-25 Mole Valley Systems Ltd Power control circuit for reactive loads

Also Published As

Publication number Publication date
IL109986A (en) 1999-04-11
AU673612B2 (en) 1996-11-14
IL109986A0 (en) 1994-10-07
WO1995001084A1 (en) 1995-01-05
FI956017A0 (en) 1995-12-14
NO955012L (en) 1995-12-11
FI956017A (en) 1995-12-14
ZA944282B (en) 1995-02-10
AU7009794A (en) 1995-01-17
IN184266B (en) 2000-07-22
EP0704144A4 (en) 1996-12-04
NZ247913A (en) 1996-07-26
EP0704144A1 (en) 1996-04-03
NO955012D0 (en) 1995-12-11
CA2164819C (en) 1998-11-10

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed