GB1071667A - Improvements in and relating to static switching apparatus - Google Patents

Improvements in and relating to static switching apparatus

Info

Publication number
GB1071667A
GB1071667A GB4264063A GB4264063A GB1071667A GB 1071667 A GB1071667 A GB 1071667A GB 4264063 A GB4264063 A GB 4264063A GB 4264063 A GB4264063 A GB 4264063A GB 1071667 A GB1071667 A GB 1071667A
Authority
GB
United Kingdom
Prior art keywords
thyristor
commutating
load
current
supply
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
GB4264063A
Inventor
William Henry Woodward
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.)
Lancashire Dynamo Electronic Products Ltd
Original Assignee
Lancashire Dynamo Electronic Products 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 Lancashire Dynamo Electronic Products Ltd filed Critical Lancashire Dynamo Electronic Products Ltd
Priority to GB4264063A priority Critical patent/GB1071667A/en
Publication of GB1071667A publication Critical patent/GB1071667A/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
    • H02M7/5157—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 wherein the extinguishing of every commutation element will be obtained by means of a commutation inductance, by starting another main commutation element in series with the first

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

1,071,667. Thyristor switching circuits. LANCASHIRE DYNAMO ELECTRONIC PRODUCTS Ltd. Jan. 29, 1965 [Oct. 29, 1963; Feb. 5, 1964], Nos. 42640/63 and 4927/64. Heading H3T. [Also in Division H2] A load 1 is connected to either of two supply terminals by thyristors TH 1' TH 2 controlled by a commutating circuit L 2 , L 2 , C 2 . The saturable transformer T 1 has its primary in series with the commutating capacitor C 2 and its secondary connected through a diode bridge rectifier D 3 , D 4 , D 5' D 6 to the supply so that some of the energy absorbed in the commutating circuit is returned to the supply. The saturable choke L 1 in series with the load 1 limits the current in a thyristor which has just been fired during the interval when that thyristor would carry both the load current and the commutating current. The load current may be A.C. (if the two thyristors conduct for equal periods) or D.C. (if one thyristor conducts for a greater period than the other, so that the circuit becomes a D.C. chopper). An alternative connection of transformer T 1 and choke L 1 is disclosed (Fig. 3, not shown).
GB4264063A 1963-10-29 1963-10-29 Improvements in and relating to static switching apparatus Expired GB1071667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4264063A GB1071667A (en) 1963-10-29 1963-10-29 Improvements in and relating to static switching apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4264063A GB1071667A (en) 1963-10-29 1963-10-29 Improvements in and relating to static switching apparatus

Publications (1)

Publication Number Publication Date
GB1071667A true GB1071667A (en) 1967-06-14

Family

ID=10425326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4264063A Expired GB1071667A (en) 1963-10-29 1963-10-29 Improvements in and relating to static switching apparatus

Country Status (1)

Country Link
GB (1) GB1071667A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2834512A1 (en) * 1977-08-10 1979-02-15 Hitachi Ltd CONVERTER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2834512A1 (en) * 1977-08-10 1979-02-15 Hitachi Ltd CONVERTER

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