GB1153895A - Improvements relating to Static Inverter Power Supplies - Google Patents

Improvements relating to Static Inverter Power Supplies

Info

Publication number
GB1153895A
GB1153895A GB3689566A GB3689566A GB1153895A GB 1153895 A GB1153895 A GB 1153895A GB 3689566 A GB3689566 A GB 3689566A GB 3689566 A GB3689566 A GB 3689566A GB 1153895 A GB1153895 A GB 1153895A
Authority
GB
United Kingdom
Prior art keywords
inverter
rectifier
voltage
signal
circuit
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
GB3689566A
Inventor
Donald Austin Grant Pedder
Wlodzimierz Kiryluk
Lawrence John Berman
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.)
IND INSTR Ltd
Laurence Scott and Electromotors Ltd
Original Assignee
IND INSTR Ltd
Laurence Scott and Electromotors 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 IND INSTR Ltd, Laurence Scott and Electromotors Ltd filed Critical IND INSTR Ltd
Priority to GB3689566A priority Critical patent/GB1153895A/en
Publication of GB1153895A publication Critical patent/GB1153895A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/4505—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only having a rectifier with controlled elements
    • 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
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc 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
    • H02M7/155—Conversion of ac power input into dc 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
    • H02M7/162—Conversion of ac power input into dc 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 in a bridge configuration
    • H02M7/1623—Conversion of ac power input into dc 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 in a bridge configuration with control circuit
    • H02M7/1626—Conversion of ac power input into dc 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 in a bridge configuration with control circuit with automatic control of the output voltage or current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2201/00—Indexing scheme relating to controlling arrangements characterised by the converter used
    • H02P2201/03—AC-DC converter stage controlled to provide a defined DC link voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/047—V/F converter, wherein the voltage is controlled proportionally with the frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

1,153,895. Control of A.C. motors. INDUSTRIAL INSTRUMENTS Ltd., and LAURENCE, SCOTT & ELECTROMOTORS Ltd. 11 Oct., 1967 [17 Aug., 1966], No. 36895/66. Heading H2J. A power supply circuit for an A.C. motor comprises an inverter 13 and a rectifier 21, signals representing respectively the switching frequency of the inverter, and the input voltage thereto from the rectifier, being compared to obtain a control signal. This signal controls the firing angle of the rectifier so that changes in the output frequency of the inverter are matched by corresponding changes in the input to the inverter, whereby the motor operates at at a steady torque. The inverter frequency is set by oscillator 10 which drives trigger and pulse distribution circuits 22 for a pair of primary switching thyristors. A converter 12 passes a voltage signal, proportional to the frequency, to a differential amplifier 11 which receives a second input from the D.C. line to the inverter. A signal which is proportional to the difference between the inputs is fed to a coincidence comparator 14 which also receives a ramp waveform signal from generator 15 driven by pulse generator 16. An output pulse is passed to stage 17 from the comparator 14 when the ramp voltage reaches the difference voltage. Inhibit signals along lines 18, 19 ensure that output pulses from the stage 17 to a firing circuit 20 are synchronized with the A.C. input to the rectifier circuit 21. The circuit 20 controls the point at which a thyristor in the rectifier circuit is fired and, hence, the level of the output voltage from the rectifier.
GB3689566A 1966-08-17 1966-08-17 Improvements relating to Static Inverter Power Supplies Expired GB1153895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3689566A GB1153895A (en) 1966-08-17 1966-08-17 Improvements relating to Static Inverter Power Supplies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3689566A GB1153895A (en) 1966-08-17 1966-08-17 Improvements relating to Static Inverter Power Supplies

Publications (1)

Publication Number Publication Date
GB1153895A true GB1153895A (en) 1969-05-29

Family

ID=10392035

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3689566A Expired GB1153895A (en) 1966-08-17 1966-08-17 Improvements relating to Static Inverter Power Supplies

Country Status (1)

Country Link
GB (1) GB1153895A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013615A1 (en) * 1979-01-10 1980-07-23 Hitachi, Ltd. Apparatus for controlling a.c. motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013615A1 (en) * 1979-01-10 1980-07-23 Hitachi, Ltd. Apparatus for controlling a.c. motor

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