GB1148439A - Improvements in d.c. to a.c. inverters - Google Patents

Improvements in d.c. to a.c. inverters

Info

Publication number
GB1148439A
GB1148439A GB4140966A GB4140966A GB1148439A GB 1148439 A GB1148439 A GB 1148439A GB 4140966 A GB4140966 A GB 4140966A GB 4140966 A GB4140966 A GB 4140966A GB 1148439 A GB1148439 A GB 1148439A
Authority
GB
United Kingdom
Prior art keywords
circuit
output
control
pulse
stable
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
GB4140966A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 claimed from AU64308/65A external-priority patent/AU401786B2/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB1148439A publication Critical patent/GB1148439A/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
    • H02M7/525—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 automatic control of output waveform or frequency

Landscapes

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

Abstract

1,148,439. Automatic voltage control. STANDARD TELEPHONES & CABLES Ltd. Sept.16, 1966 [Sept. 21, 1965], No. 41409/66. Heading G3R. [Also in Division H2] In a bridge type inverter the A. C. output is used to control the overlap but not the duration of the conductive periods of the arms of the bridge so as to control the A. C. output. The bridge shown comprises four S. C. Rs connected by tapped commutating inductors and diodes connected to windings of the output transformer to prevent the potential at the ends of the transformer windings from swinging beyond the supply potentials. The control circuit includes an oscillator 7, each pulse from which sets a bi-stable circuit 9. This removes a diode clamp from a timing circuit 6 which, after the time delay, produces a pulse which resets bi-stable circuit 9. Negative output pulse transitions from circuit 9 change over a bi-stable circuit 13 and the output of this circuit correspondingly changes over a further bi-stable circuit 13 at the next input to its trigger terminal T. The outputs from the bi-stables 12, 13 control gates 15-18 which pass H. F firing signals to the S. C. Rs as described in Specification 1, 097, 891. The delay produced by the circuit 6 and thus the period during which conductor of opposite arms coincides is controlled by comparing at 4 the output from the inverter switch reference voltage from a Zener diode 3 and controlling the timing circuit accordingly.
GB4140966A 1965-09-21 1966-09-16 Improvements in d.c. to a.c. inverters Expired GB1148439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU64308/65A AU401786B2 (en) 1965-09-21 Improvements ind. c. toa. c. inverters

Publications (1)

Publication Number Publication Date
GB1148439A true GB1148439A (en) 1969-04-10

Family

ID=3749014

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4140966A Expired GB1148439A (en) 1965-09-21 1966-09-16 Improvements in d.c. to a.c. inverters

Country Status (3)

Country Link
BE (1) BE687170A (en)
GB (1) GB1148439A (en)
NL (1) NL6613292A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670235A (en) * 1970-09-25 1972-06-13 Borg Warner Motor control system with compensation for low-frequency variations in motor energizing voltage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670235A (en) * 1970-09-25 1972-06-13 Borg Warner Motor control system with compensation for low-frequency variations in motor energizing voltage

Also Published As

Publication number Publication date
NL6613292A (en) 1967-03-22
BE687170A (en) 1967-03-21

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