SE8008422L - SPEED CONTROL DEVICE - Google Patents
SPEED CONTROL DEVICEInfo
- Publication number
- SE8008422L SE8008422L SE8008422A SE8008422A SE8008422L SE 8008422 L SE8008422 L SE 8008422L SE 8008422 A SE8008422 A SE 8008422A SE 8008422 A SE8008422 A SE 8008422A SE 8008422 L SE8008422 L SE 8008422L
- Authority
- SE
- Sweden
- Prior art keywords
- motor
- current
- supply
- actual time
- control device
- Prior art date
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
- H02P27/02—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using supply voltage with constant frequency and variable amplitude
- H02P27/026—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using supply voltage with constant frequency and variable amplitude whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
- Motor And Converter Starters (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Direct Current Motors (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
A speed controller for an alternating current motor comprising electronic switching means for starting and stopping the supply of current to the motor to control the motor speed, the controller comprising means for determining, during each revolution of the motor, the actual time taken for the rotor of the motor to rotate through an angle which is a sub-multiple of 2 pi , means for comparing the actual time with a predetermined reference time, and means for starting the supply of current to the motor when the actual time exceeds the reference time and for maintaining the supply of current until the actual time falls below the reference time.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0773479A AT369934B (en) | 1979-12-06 | 1979-12-06 | BINARY SPEED CONTROL DEVICE FOR AC MOTORS BY MOTOR CURRENT TWO-POINT OPERATION |
Publications (1)
Publication Number | Publication Date |
---|---|
SE8008422L true SE8008422L (en) | 1981-06-07 |
Family
ID=3598960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8008422A SE8008422L (en) | 1979-12-06 | 1980-12-01 | SPEED CONTROL DEVICE |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT369934B (en) |
DE (1) | DE3004456A1 (en) |
ES (1) | ES8201781A1 (en) |
FR (1) | FR2471697A1 (en) |
GB (1) | GB2065337B (en) |
SE (1) | SE8008422L (en) |
ZA (1) | ZA807524B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2004090A6 (en) * | 1987-02-13 | 1988-12-01 | Remco Sa | Control unit for regulation of washing machine motors |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES392242A1 (en) * | 1971-06-15 | 1973-11-16 | Ind De Relojeria S A | System for regulating rotary speed of a shaft |
GB1544199A (en) * | 1976-02-27 | 1979-04-11 | Strathearn Audio Ltd | Speed control system |
-
1979
- 1979-12-06 AT AT0773479A patent/AT369934B/en not_active IP Right Cessation
-
1980
- 1980-02-07 DE DE19803004456 patent/DE3004456A1/en not_active Ceased
- 1980-11-26 GB GB8037951A patent/GB2065337B/en not_active Expired
- 1980-12-01 SE SE8008422A patent/SE8008422L/en not_active Application Discontinuation
- 1980-12-02 ZA ZA00807524A patent/ZA807524B/en unknown
- 1980-12-05 FR FR8025926A patent/FR2471697A1/en active Granted
- 1980-12-05 ES ES497484A patent/ES8201781A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AT369934B (en) | 1983-02-10 |
GB2065337A (en) | 1981-06-24 |
ZA807524B (en) | 1981-12-30 |
DE3004456A1 (en) | 1981-06-11 |
ES497484A0 (en) | 1981-12-16 |
GB2065337B (en) | 1983-09-28 |
FR2471697B1 (en) | 1985-03-22 |
ATA773479A (en) | 1982-06-15 |
ES8201781A1 (en) | 1981-12-16 |
FR2471697A1 (en) | 1981-06-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8008422-1 |