GB858553A - Improvements in and relating to rectifier circuits - Google Patents

Improvements in and relating to rectifier circuits

Info

Publication number
GB858553A
GB858553A GB3469857A GB3469857A GB858553A GB 858553 A GB858553 A GB 858553A GB 3469857 A GB3469857 A GB 3469857A GB 3469857 A GB3469857 A GB 3469857A GB 858553 A GB858553 A GB 858553A
Authority
GB
United Kingdom
Prior art keywords
point
transistors
load
transistor
current
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
GB3469857A
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
Priority to BE572659D priority Critical patent/BE572659A/xx
Application filed by Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB3469857A priority patent/GB858553A/en
Priority to FR778139A priority patent/FR1216357A/en
Publication of GB858553A publication Critical patent/GB858553A/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
    • 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
    • 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
    • H02M7/21—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 triode or transistor type requiring continuous application of a control signal
    • H02M7/217—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)

Abstract

858,553. Rectifying. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd., and EASTOP, R. H. Nov. 7, 1958 [Nov. 7, 1957], No. 34698/57. Class 38 (2). A polyphase bridge rectifying circuit for supplying a controllable unidirectional current to a load includes two groups of three transistors, those in one group 11 having their collectors connected through a common point 6 to one end of load 20, and those in the other group 14 having either their collectors or emitters, depending on conductivity type, connected through common point 7 to the other end of the load. Each supply line 1 is connected through the primary winding of a current transformer 17 to one of the rectifiers in each group. Each transformer has two secondaries which are connected between the bases and collectors of transistors 11 and 14 respectively, the phasing being such that the transistors are switched synchronously to supply unidirectional current to the load. The secondary windings associated with transistors 11 are connected to a common point 5 which is connected through switch 26 to point 6. Lines 1 are bridged by diodes 23 having a star-point 4 connected through current limiting resistor 22 to point 5. Switch 26 may be a singlepole synchronous switch or may comprise a transistor 27 (Fig. 1b) driven by current pulse generator 31 so that the transistor has alternately high and low impedance between its collector and emitter, which are connected to points 6 and 5 respectively. When transistor 27 is conducting the groups of transistors 11 and 14 will act as simple diodes and unidirectional current will pass through load 20. When transistor 27 is substantially non- conducting no load current flows since the bases of transistors 11 are connected to point 4 which must always be the most positive point in the circuit so that the transistors are blocked. In a modification the point 4 is held at a highpositive potential by connecting a D.C. bias supply between point 4 and the neutral point of the supply system.
GB3469857A 1957-11-07 1957-11-07 Improvements in and relating to rectifier circuits Expired GB858553A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE572659D BE572659A (en) 1957-11-07
GB3469857A GB858553A (en) 1957-11-07 1957-11-07 Improvements in and relating to rectifier circuits
FR778139A FR1216357A (en) 1957-11-07 1958-11-03 Electrical circuit for supplying a load with unidirectional current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3469857A GB858553A (en) 1957-11-07 1957-11-07 Improvements in and relating to rectifier circuits

Publications (1)

Publication Number Publication Date
GB858553A true GB858553A (en) 1961-01-11

Family

ID=10368849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3469857A Expired GB858553A (en) 1957-11-07 1957-11-07 Improvements in and relating to rectifier circuits

Country Status (3)

Country Link
BE (1) BE572659A (en)
FR (1) FR1216357A (en)
GB (1) GB858553A (en)

Also Published As

Publication number Publication date
FR1216357A (en) 1960-04-25
BE572659A (en)

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