GB1295667A - - Google Patents

Info

Publication number
GB1295667A
GB1295667A GB3249769A GB1295667DA GB1295667A GB 1295667 A GB1295667 A GB 1295667A GB 3249769 A GB3249769 A GB 3249769A GB 1295667D A GB1295667D A GB 1295667DA GB 1295667 A GB1295667 A GB 1295667A
Authority
GB
United Kingdom
Prior art keywords
inverter
voltage
shift register
windings
bridge
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
GB3249769A
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 filed Critical
Publication of GB1295667A publication Critical patent/GB1295667A/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
    • H02M7/53—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 triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters 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
    • H02M7/42—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
    • H02M7/53—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 triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • H02M7/53875—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

1295667 Inverting PLESSEY CO Ltd 9 June 1970 [27 June 1969] 32497/69 Heading H2F A polyphase inverter comprises a plurality of controlled switching means A1, A2, B1, B2, C1, C2 operable sequentially so as to connect a plurality of windings PR, PB, PY to a D.C. supply such that, according to the states of the switching means, each winding has a first or second portion of the voltage of the D.C. supply or none of said voltage applied across it and including a shift register for activating the switching means in the appropriate order so as to produce stepped sine waves across the windings. A pair of such polyphase inverters each producing a stepped sine wave may be connected together and provided with means for varying their relative phase so as to control the output voltage of the combination. Fig. 6 shows the combination of a pair of three-phase inverters each using a bridge of six transistors or thyristors (represented by switches A1...C2; Aa1... Ca2), the first-bridge feeding primary windings PR, PB, PY of an output transformer whilst the second bridge feeds primary windings PaR, PaB, PaY. The main converting elements of the first inverter are controlled in specified order by means of bi-stable circuits (Fig. 4, not shown) driven by a twelve-stage shift register 54 (Fig. 5), a further shift register 54a drives bi-stable circuits controlling the main converting elements of the second inverter. The shift registers 54, 54a are driven by pulses on line 56 after reduction in frequency by counters 66, 68. The combined output voltage is adjustable by delaying the phase of the second inverter by means of a device 72 controlled by a voltage 54 which determines the reset time of details 68 and 54a.
GB3249769A 1969-06-27 1969-06-27 Expired GB1295667A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3249769 1969-06-27

Publications (1)

Publication Number Publication Date
GB1295667A true GB1295667A (en) 1972-11-08

Family

ID=10339512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3249769A Expired GB1295667A (en) 1969-06-27 1969-06-27

Country Status (4)

Country Link
US (1) US3638097A (en)
DE (1) DE2025589A1 (en)
FR (1) FR2049213A1 (en)
GB (1) GB1295667A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5272619A (en) * 1991-10-08 1993-12-21 Mcqueen Clarence W Invertor systems utilizing inductive or capacitive reactance

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905882A (en) * 1957-08-20 1959-09-22 Licentia Gmbh Converter
NL278413A (en) * 1961-05-15
FR1343999A (en) * 1963-01-03 1963-11-22 Licentia Gmbh Power transmission assembly
US3373338A (en) * 1967-02-02 1968-03-12 Gen Electric Power conversion system with magnetically forced voltage sharing for the switching devices

Also Published As

Publication number Publication date
US3638097A (en) 1972-01-25
FR2049213A1 (en) 1971-03-26
DE2025589A1 (en) 1971-01-07

Similar Documents

Publication Publication Date Title
GB1504313A (en) Inverter controlling device
GB1268265A (en) Power converter circuits
GB1222291A (en) Static frequency converter with voltage control
GB1352881A (en) Cycloconverters
GB997706A (en) Inverter
GB998912A (en) Speed control of a polyphase electric motor
GB1108571A (en) Inverter systems
ES473793A1 (en) Static controlled AC motor drive having plug reversal capability
US3287622A (en) Static frequency converter for producing a constant output frequency from a variablefrequency input
US3222587A (en) Alternating current converting circuit
GB1214800A (en) A circuit for producing a pulse train of variable phase angle synchronous with an a.c. signal
GB1329764A (en) Electrical converter station for high voltage
US4357655A (en) Three-phase inverter
GB1344534A (en) Polyphase power converter circuits
GB1313603A (en) Polyphase reference waveform generator
US4220989A (en) Polyphase variable frequency inverter with output voltage control
US3982170A (en) Variable speed, constant frequency induction generator system
GB1295667A (en)
GB952626A (en) A frequency control system
GB1370495A (en) Power switching means
GB1395743A (en) Conversion systems
US3350621A (en) Independently controlled rectifier bridge converter
GB1091530A (en) Electric motor control apparatus
GB1441811A (en) Inverters
US3889174A (en) Apparatus for generating three-phase sinusoidal voltages

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees