GB1055855A - Improvements in and relating to electric converters - Google Patents

Improvements in and relating to electric converters

Info

Publication number
GB1055855A
GB1055855A GB2189465D GB2189465D GB1055855A GB 1055855 A GB1055855 A GB 1055855A GB 2189465 D GB2189465 D GB 2189465D GB 2189465 D GB2189465 D GB 2189465D GB 1055855 A GB1055855 A GB 1055855A
Authority
GB
United Kingdom
Prior art keywords
rectifier
capacitor
rectifiers
fired
commutation
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
GB2189465D
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.)
Societe Generale de Constructions Electriques et Mecaniques
Cegelec SA
Original Assignee
Societe Generale de Constructions Electriques et Mecaniques
Cegelec SA
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 Societe Generale de Constructions Electriques et Mecaniques , Cegelec SA filed Critical Societe Generale de Constructions Electriques et Mecaniques
Publication of GB1055855A publication Critical patent/GB1055855A/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
    • H02M7/42—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)
  • Rectifiers (AREA)

Abstract

1,055,855. Converting. SOCIETE GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES (ALSTHOM). May 24, 1965 [May 22, 1964], No. 21894/65. Heading H2F. A polyphase bridge inverter of controlled rectifiers 1 ... 6, incorporates shut-off circuitry comprising a series combination of capacitor 20, inductor 21 and auxiliary back-to-back controlled rectifiers (24 ... 29) for each phase. In the embodiment of Fig. 1 each main rectifier fires for 120 degrees and a separate D.C. supply 34, 35, is provided for charging the capacitor 20. At commutation from rectifier 1 to rectifier 2, the rectifiers 2, 22 and 26 are fired and the capacitor (charged as shown) discharges along the dotted path shutting off rectifier 1. The capacitor becomes reversely charged due to the resonant L.C. circuit 20, 21, and the lost voltage due to dissipated energy is made up from the source 34, 35, by firing rectifiers 30 and 33. The capacitor 20 is now correctly charged to shut off the thyristor 6 at the next commutation when thyristors 4, 23 and 27 are fired. Reverse diodes 14. . . 19 are provided to pass excess shut-off current. In a different embodiment (Fig. 4, not shown) the separate charging circuit (30 ... 35) is dispensed with and chokes are included in the bridge arms. In this embodiment, conduction is for 180 degrees, so that when the auxiliary rectifiers are fired to switch off rectifier 1, its associated rectifier 4 is also fired. This completes a circuit 22, 20, 21 and 4 for reversely changing the capacitor from the main D.C. supply. The chokes aid commutation by providing additional blocking voltage on the shutting off rectifier, and limit short-circuit current through the series connection of rectifiers 1 and 4 occurring at commutation.
GB2189465D 1964-05-22 1965-05-24 Improvements in and relating to electric converters Expired GB1055855A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2507A FR1404651A (en) 1964-05-22 1964-05-22 Static current converter

Publications (1)

Publication Number Publication Date
GB1055855A true GB1055855A (en) 1967-01-18

Family

ID=8568689

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2189465D Expired GB1055855A (en) 1964-05-22 1965-05-24 Improvements in and relating to electric converters

Country Status (2)

Country Link
FR (1) FR1404651A (en)
GB (1) GB1055855A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544879A (en) * 1969-03-11 1970-12-01 Gen Motors Corp Commutating circuit for an inverter having controlled rectifiers
US3676763A (en) * 1970-02-19 1972-07-11 Siemens Ag A self-commutating direct-to-alternating current inverter
US3702962A (en) * 1971-01-07 1972-11-14 Bosch Gmbh Robert Ac to dc rectifier circuit with rapid turn-off in case of overcurrent through the load circuit
US3763417A (en) * 1971-08-26 1973-10-02 Gen Motors Corp Shut-off arrangement for power controlled rectifiers in a dc to ac inverter
DE2627634A1 (en) * 1976-06-19 1977-12-22 Bbc Brown Boveri & Cie Self controlled invertor system - has extinguishing capacitor whose charging half-wave is initiated by ignition of auxiliary diode

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132813B1 (en) * 1970-11-14 1976-09-16

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544879A (en) * 1969-03-11 1970-12-01 Gen Motors Corp Commutating circuit for an inverter having controlled rectifiers
US3676763A (en) * 1970-02-19 1972-07-11 Siemens Ag A self-commutating direct-to-alternating current inverter
US3702962A (en) * 1971-01-07 1972-11-14 Bosch Gmbh Robert Ac to dc rectifier circuit with rapid turn-off in case of overcurrent through the load circuit
US3763417A (en) * 1971-08-26 1973-10-02 Gen Motors Corp Shut-off arrangement for power controlled rectifiers in a dc to ac inverter
DE2627634A1 (en) * 1976-06-19 1977-12-22 Bbc Brown Boveri & Cie Self controlled invertor system - has extinguishing capacitor whose charging half-wave is initiated by ignition of auxiliary diode

Also Published As

Publication number Publication date
FR1404651A (en) 1965-07-02

Similar Documents

Publication Publication Date Title
GB1047916A (en) An electric inverter
GB947832A (en) Inverter
US3109976A (en) Phase and frequency converter device
GB1264538A (en)
SU1003777A3 (en) Ac-dc voltage converter
GB1055855A (en) Improvements in and relating to electric converters
US2293296A (en) Arrangement for the sparkless interruption of currents
GB1012025A (en) An inverter for producing an alternating current in a load from a direct current power supply
US3601683A (en) Energy recovery circuit for inverters
US3331011A (en) Inverter control means
US4019117A (en) Circuit arrangement for an inverter
GB1455985A (en) Direct current chopper arrangements
US3422338A (en) Reversible current converter for selective direction of current flow through d.c. load and including choke coil with unidirectional current flow
US3825813A (en) Multi-phase thyristor inverter circuit
US3343068A (en) Static inverter system
US3469170A (en) Firing circuit for semiconductive controlled rectifiers
US2320224A (en) Rectifier circuit
SU543156A1 (en) Thyristor Switch
SU511658A1 (en) Stand alone voltage inverter
SU609175A1 (en) Storage battery charging/discharging device
US4218731A (en) Inverter comprising at least two controllable load thyristors
SU404167A1 (en) THREE PHASE CONVERTER
SU99555A1 (en) AC-to-AC converter of another frequency or DC to AC
SU519832A1 (en) Artificial switching rectifier
ES299246A3 (en) Improvements in semiconductor rectifying installations