GB1298597A - Force commutation circuits for controlled rectifiers - Google Patents

Force commutation circuits for controlled rectifiers

Info

Publication number
GB1298597A
GB1298597A GB1245070A GB1245070A GB1298597A GB 1298597 A GB1298597 A GB 1298597A GB 1245070 A GB1245070 A GB 1245070A GB 1245070 A GB1245070 A GB 1245070A GB 1298597 A GB1298597 A GB 1298597A
Authority
GB
United Kingdom
Prior art keywords
commutating
main
controlled rectifiers
thyristor
capacitor
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
GB1245070A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1298597A publication Critical patent/GB1298597A/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
    • H02M1/06—Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/125—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/135—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/505—Conversion of dc power input into ac 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
    • H02M7/515—Conversion of dc power input into ac 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
    • H02M7/5152—Conversion of dc power input into ac 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 with separate extinguishing means
    • H02M7/5155—Conversion of dc power input into ac 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 with separate extinguishing means wherein each commutation element has its own extinguishing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Rectifiers (AREA)
  • Dc-Dc Converters (AREA)
  • Power Conversion In General (AREA)
  • Thyristor Switches And Gates (AREA)

Abstract

1298597 Commutating thyristors WESTINGHOUSE ELECTRIC CORP 16 March 1970 [3 April 1969] 12450/70 Heading H2F A circuit for controlling the output of a D.C. Source E comprises a pair of main controlled rectifiers Sp1, Sp2 connected to respective poles of source E, a pair of commutating controlled rectifiers Sc1 Sc2 and a pair of uni-directionally conductive devices D1, D2 connected in a bridge such that the main controlled rectifiers Spl, Sp2 form opposite arms whilst the remaining arms are formed by the commutating controlled rectifiers Sc1 Sc2 and the uni-directionally conductive devices D1, D2 respectively. A commutating capacitor C is connected across the bridge and is arranged to be charged alternatively with opposite polarities, the respective polarities being appropriate for the alternate commutation of the main controlled rectifiers Sp1 Sp2. Fig. 4 shows a circuit for periodically interrupting the D.C. supply B+, B- to a threephase inverter for commutation purposes. Assuming capacitor C is charged with the polarity shown, the main thyristor Sp1 may be turned off by triggering commutation thyristor Sc1 which discharges capacitor C via diode D1 in the reverse direction through Sp1. Capacitor C then charges in the reverse direction through diode D1 and the inverter after which the supply to line B + is interrupted. After retriggering the main thyristor Sp1, any of the main inverting thyristors Sa1...Sc2 from which their gating signals have been removed will no longer be conductive. The next commutating operation is achieved by triggering commutating thyristor Sc2 which turns off main thyristor Sp2 in a similar manner. Appropriate ones of feedback thyristors SA1<SP>1</SP>...SC2<SP>1</SP> should be turned on during commutation so as to provide for reactive current. Fig. 3 (not shown) relates to a D.C. chopper in which the main thyristor is bypassed by a bridge of four thyristors shunted by a commutating capacitor.
GB1245070A 1969-04-03 1970-03-16 Force commutation circuits for controlled rectifiers Expired GB1298597A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81307469A 1969-04-03 1969-04-03

Publications (1)

Publication Number Publication Date
GB1298597A true GB1298597A (en) 1972-12-06

Family

ID=25211389

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1245070A Expired GB1298597A (en) 1969-04-03 1970-03-16 Force commutation circuits for controlled rectifiers

Country Status (6)

Country Link
JP (1) JPS4926762B1 (en)
AT (1) AT312102B (en)
CH (1) CH518645A (en)
DE (1) DE2014273A1 (en)
FR (1) FR2041130B1 (en)
GB (1) GB1298597A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144359U (en) * 1975-05-13 1976-11-19
AT376531B (en) * 1976-11-11 1984-11-26 Siemens Ag Oesterreich SELF-GUIDED MULTI-PULSE RECTIFIER
DE19945263A1 (en) * 1999-09-21 2001-03-29 Moser Elektrogeraete Gmbh Drive arrangement for generating linear oscillatory movement from rotary motion, e.g. for hair cutter blade, has motor with motor shaft with bend(s) or kink(s) in shaft for producing movement of eccentric element

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1153450B (en) * 1962-09-27 1963-08-29 Licentia Gmbh Process for equal voltage distribution in series connected, controllable semiconductor elements
CH419325A (en) * 1965-02-23 1966-08-31 Etter Marcel Inverter

Also Published As

Publication number Publication date
FR2041130A1 (en) 1971-01-29
CH518645A (en) 1972-01-31
FR2041130B1 (en) 1974-07-12
DE2014273A1 (en) 1970-10-15
JPS4926762B1 (en) 1974-07-11
AT312102B (en) 1973-12-27

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees