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 DIRECTORInfo
- 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
Links
- 230000001276 controlling effect Effects 0.000 title 1
- 230000001105 regulatory effect Effects 0.000 title 1
- 238000010304 firing Methods 0.000 abstract 2
- 230000003068 static effect Effects 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Multiple Motors (AREA)
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>
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3047828C2 (en) * | 1980-12-18 | 1987-01-29 | Loher Gmbh, 8399 Ruhstorf | Method for improving the control dynamics of frequency-controlled asynchronous machines |
| CA1224245A (en) * | 1984-03-02 | 1987-07-14 | Suzuo Saito | Power converter for ac load |
Family Cites Families (5)
| 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 |
-
1978
- 1978-01-27 DE DE2804050A patent/DE2804050C2/en not_active Expired
-
1979
- 1979-01-04 GB GB7900246A patent/GB2013429B/en not_active Expired
- 1979-01-08 SE SE7900168A patent/SE433154B/en not_active IP Right Cessation
- 1979-01-09 CH CH17479A patent/CH638350A5/en not_active IP Right Cessation
- 1979-01-17 AT AT0033979A patent/AT366215B/en not_active IP Right Cessation
- 1979-01-26 FR FR7902084A patent/FR2415908A1/en active Granted
- 1979-01-26 IT IT19666/79A patent/IT1109786B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE2804050C2 (en) | 1982-09-09 |
| GB2013429B (en) | 1982-03-17 |
| GB2013429A (en) | 1979-08-08 |
| FR2415908B1 (en) | 1983-03-18 |
| IT7919666A0 (en) | 1979-01-26 |
| IT1109786B (en) | 1985-12-23 |
| SE433154B (en) | 1984-05-07 |
| AT366215B (en) | 1982-03-25 |
| ATA33979A (en) | 1981-07-15 |
| DE2804050A1 (en) | 1979-08-02 |
| CH638350A5 (en) | 1983-09-15 |
| FR2415908A1 (en) | 1979-08-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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