GB1314366A - Control circuits for power transmission systems - Google Patents

Control circuits for power transmission systems

Info

Publication number
GB1314366A
GB1314366A GB1314366DA GB1314366A GB 1314366 A GB1314366 A GB 1314366A GB 1314366D A GB1314366D A GB 1314366DA GB 1314366 A GB1314366 A GB 1314366A
Authority
GB
United Kingdom
Prior art keywords
converters
firing
control
spacing
power transmission
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.)
Expired
Application number
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.)
English Electric Co Ltd
Original Assignee
English Electric Co Ltd
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 English Electric Co Ltd filed Critical English Electric Co Ltd
Publication of GB1314366A publication Critical patent/GB1314366A/en
Expired 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/081—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters wherein the phase of the control voltage is adjustable with reference to the AC source
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/162—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration
    • H02M7/1623—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration with control circuit
    • H02M7/1626—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration with control circuit with automatic control of the output voltage or current
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

1314366 Controlling converters ENGLISH ELECTRIC CO Ltd 5 Aug 1971 [5 Aug 1970] 37797/70 Heading H2F [Also in Division H3] In a power transmission system comprising a number of converters fired in sequence from a firing circuit, means are provided to generate a control signal which adjusts the timing of the firing pulses so as to minimize any deviation of the firing sequence from a predetermined spacing. In a converter system in which a number of A.C.-D.C. converters (1, 2, Fig. 1, not shown) are connected to the same polyphase supply, the spacing between the firing pulses for the two converters are maintained at a predetermined value by the control circuit of Fig. 5. The two pulse trains applied at terminals 14, 15 alternately set and reset bistable 30, 31 to produce a pulse train with a mark/space ratio dependent on the spacing between the input pulse trains. This is then fed to integrator 61 to produce a first control voltage on line 16, and a second, inverted control voltage on line 17, the two control voltages being used to control the timing of the firing pulse generators: (8, 9) associated with the two converters (1, 2).
GB1314366D 1970-08-05 1970-08-05 Control circuits for power transmission systems Expired GB1314366A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3779770 1970-08-05

Publications (1)

Publication Number Publication Date
GB1314366A true GB1314366A (en) 1973-04-18

Family

ID=10399070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1314366D Expired GB1314366A (en) 1970-08-05 1970-08-05 Control circuits for power transmission systems

Country Status (1)

Country Link
GB (1) GB1314366A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166611A (en) * 1984-10-12 1986-05-08 Schrack Elektronik Ag Circuit for detecting asynchronism in alternating-voltage signals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166611A (en) * 1984-10-12 1986-05-08 Schrack Elektronik Ag Circuit for detecting asynchronism in alternating-voltage signals
GB2166611B (en) * 1984-10-12 1989-03-01 Schrack Elektronik Ag Circuit arrangement for detecting deviations of the synchronism of at least two alternating-voltage signals

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee