GB995771A - Improvements relating to electrical power control or switching circuits - Google Patents

Improvements relating to electrical power control or switching circuits

Info

Publication number
GB995771A
GB995771A GB2733862A GB2733862A GB995771A GB 995771 A GB995771 A GB 995771A GB 2733862 A GB2733862 A GB 2733862A GB 2733862 A GB2733862 A GB 2733862A GB 995771 A GB995771 A GB 995771A
Authority
GB
United Kingdom
Prior art keywords
rectifier
circuit
inductance
transformer
load
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
GB2733862A
Inventor
Kenneth Gordon King
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal 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 Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB2733862A priority Critical patent/GB995771A/en
Priority to DE19631438664 priority patent/DE1438664A1/en
Publication of GB995771A publication Critical patent/GB995771A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/32—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices
    • G05F1/34—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices
    • G05F1/38—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/725—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents

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)
  • Ac-Ac Conversion (AREA)

Abstract

995,771. Control and switching systems. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. July 15, 1963 [July 17, 1962], No. 27338/62. Heading H2H. [Also in Division H3] The Specification describes a number of circuits for controlling the power supply to an A.C. load, the common feature of each circuit being a parallel arrangement of a saturable inductance and a controlled rectifier. In Fig. 1 these elements comprise a transformer 7 and a semi-conductor rectifier 5, this circuit acting as a switching system to supply or disconnect a load 8 according to whether the rectifier 5 is continuously non-conducting or conducting. The circuit acts as a regulating system by applying triggering pulses to the rectifier 5 at appropriate instants. When used as a switching system the current limiting inductance 3 is replaced by a capacitor, and rectifier 5 is controlled by a circuit, Fig. 2 (not shown), in such a way as to avoid excessive peak currents at closure. Rectifier 5 may be connected across part or all of the secondary winding 6, and the primary winding 4 may be connected to the A.C. supply through a series-parallel arrangement of a capacitor and inductor, Figs. 3 and 4 (not shown), and may be centre-tapped. Fig. 5 (not shown). Other modifications mentioned are:- (1) Connecting the rectifier across part or all of a secondary winding separate from that supplying the load; (2) Combining the transformer and inductance in a single unit having a high leakage reactance, Fig. 6 (not shown); (3) Replacing the saturable transformer by a saturable inductor; (4) Connecting a current-limiting inductance in series with the rectifier to limit surges when using the circuit as a regulating system.
GB2733862A 1962-07-17 1962-07-17 Improvements relating to electrical power control or switching circuits Expired GB995771A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2733862A GB995771A (en) 1962-07-17 1962-07-17 Improvements relating to electrical power control or switching circuits
DE19631438664 DE1438664A1 (en) 1962-07-17 1963-07-13 Device for controlling electrical energy or switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2733862A GB995771A (en) 1962-07-17 1962-07-17 Improvements relating to electrical power control or switching circuits

Publications (1)

Publication Number Publication Date
GB995771A true GB995771A (en) 1965-06-23

Family

ID=10257956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2733862A Expired GB995771A (en) 1962-07-17 1962-07-17 Improvements relating to electrical power control or switching circuits

Country Status (2)

Country Link
DE (1) DE1438664A1 (en)
GB (1) GB995771A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205008A (en) * 1987-05-20 1988-11-23 Tsai Yu Ching AC-CD Converters
GB2238190A (en) * 1989-10-27 1991-05-22 Gec Alsthom Ltd Electrical energy store for operating a circuit breaker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58112110A (en) * 1981-12-25 1983-07-04 Fanuc Ltd Stabilized power supply device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205008A (en) * 1987-05-20 1988-11-23 Tsai Yu Ching AC-CD Converters
GB2238190A (en) * 1989-10-27 1991-05-22 Gec Alsthom Ltd Electrical energy store for operating a circuit breaker

Also Published As

Publication number Publication date
DE1438664A1 (en) 1969-04-17

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