SE7900168L - PROCEDURE FOR CONTROLLING AND REGULATING AN ASYNCHRON MACHINE FEED THROUGH AN INTERMEDIATE DIRECTOR - Google Patents

PROCEDURE FOR CONTROLLING AND REGULATING AN ASYNCHRON MACHINE FEED THROUGH AN INTERMEDIATE DIRECTOR

Info

Publication number
SE7900168L
SE7900168L SE7900168A SE7900168A SE7900168L SE 7900168 L SE7900168 L SE 7900168L SE 7900168 A SE7900168 A SE 7900168A SE 7900168 A SE7900168 A SE 7900168A SE 7900168 L SE7900168 L SE 7900168L
Authority
SE
Sweden
Prior art keywords
voltage
motor
pulses
frequency
members
Prior art date
Application number
SE7900168A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE433154B (en
Inventor
U Putz
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of SE7900168L publication Critical patent/SE7900168L/en
Publication of SE433154B publication Critical patent/SE433154B/en

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
    • 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

Abstract

An asynchronous motor 4 is supplied by a static frequency changer 1, 2, 3 whose inverter 3 is controlled, over an upper frequency range, by pulses derived from the motor voltage and, over a lower frequency range when a sufficiently high voltage is not available, by external pulses. The latter are derived from the desired value voltage of potentiometer 5 feeding voltage/frequency converter 18 controlling inverter 3 through one position of a changeover switch 22. Firing unit 12 controls the inverter through the other switch position in accordance with pulses derived by members 13-16. Controller 19 receives the pulse trains from members 12, 18 and controls unit 12 to reduce to a minimum the phase difference between the pulse trains. Stage 21 responds to this condition and to trigger stages 20, 23 operable when the motor voltage and frequency exceed preset values, to change over switch 22 and ensure smooth transition from external to motor pulsed operation. Signals from members 8, 17 are compared with the potentiometer voltage to produce control signals for controllers 6, 7, whose outputs are summed to determine the phase of pulses from firing unit 10 for rectifier 1 and from unit 12. Further control is provided by signals from current sensor 11 and optionally from torque controller 25 if the motor is operated at a constant voltage/frequency ratio. <IMAGE>
SE7900168A 1978-01-27 1979-01-08 PROCEDURE FOR CONTROL AND REGULATION OF AN ASYNCHRONIC MACHINE SE433154B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2804050A DE2804050C2 (en) 1978-01-27 1978-01-27 Arrangement for controlling and regulating an asynchronous machine fed by an intermediate circuit converter

Publications (2)

Publication Number Publication Date
SE7900168L true SE7900168L (en) 1979-07-28
SE433154B SE433154B (en) 1984-05-07

Family

ID=6030788

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7900168A SE433154B (en) 1978-01-27 1979-01-08 PROCEDURE FOR CONTROL AND REGULATION OF AN ASYNCHRONIC MACHINE

Country Status (7)

Country Link
AT (1) AT366215B (en)
CH (1) CH638350A5 (en)
DE (1) DE2804050C2 (en)
FR (1) FR2415908A1 (en)
GB (1) GB2013429B (en)
IT (1) IT1109786B (en)
SE (1) SE433154B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047828A1 (en) * 1980-12-18 1982-07-01 Loher Gmbh, 8399 Ruhstorf ARRANGEMENTS FOR IMPROVING THE CONTROL DYNAMICS OF FREQUENCY-CONTROLLED ASYNCHRONOUS MACHINES WITH CURRENT INTERCONNECTORS AS A SOURCE
CA1224245A (en) * 1984-03-02 1987-07-14 Suzuo Saito Power converter for ac load

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236640B (en) * 1961-08-08 1967-03-16 Vet Karl Franz Schinckel Dr Speed-controlled electromotive drive with a converter motor built like a synchronous motor
FR1423464A (en) * 1965-01-29 1966-01-03 Licentia Gmbh Circuitry for frequency control of a mutator
DE1588745C3 (en) * 1967-08-04 1973-09-27 Siemens Ag, 1000 Berlin U. 8000 Muenchen Method for operating a converter to control the speed and direction of rotation of an induction machine
JPS5231320A (en) * 1975-09-05 1977-03-09 Hitachi Ltd Driving appliance for inductin motor
FR2357100A1 (en) * 1976-07-02 1978-01-27 Alsthom Cgee Control of async. motor - uses thyristor rectifier bridge and thyristor oscillator receiving variable frequency three-phase supply

Also Published As

Publication number Publication date
ATA33979A (en) 1981-07-15
GB2013429B (en) 1982-03-17
SE433154B (en) 1984-05-07
DE2804050C2 (en) 1982-09-09
DE2804050A1 (en) 1979-08-02
FR2415908A1 (en) 1979-08-24
CH638350A5 (en) 1983-09-15
FR2415908B1 (en) 1983-03-18
GB2013429A (en) 1979-08-08
AT366215B (en) 1982-03-25
IT7919666A0 (en) 1979-01-26
IT1109786B (en) 1985-12-23

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