JPS55157993A - Speed control system for induction motor - Google Patents
Speed control system for induction motorInfo
- Publication number
- JPS55157993A JPS55157993A JP6651279A JP6651279A JPS55157993A JP S55157993 A JPS55157993 A JP S55157993A JP 6651279 A JP6651279 A JP 6651279A JP 6651279 A JP6651279 A JP 6651279A JP S55157993 A JPS55157993 A JP S55157993A
- Authority
- JP
- Japan
- Prior art keywords
- induction motor
- circuit
- power
- thinning out
- switching 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.)
- Pending
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 Ac Motors In General (AREA)
Abstract
PURPOSE:To minimize a loss to occur on an induction motor and also to improve operation efficiency by thinning out voltage of an AC power by given number by stages according to input power of the induction motor. CONSTITUTION:Number of revolutions of an induction motor 5 is detected by a speed generator 6, and a switching circuit 9 to control power voltage waves through thinning out is added to a circuit to control automatically thyristors 7, 8 through controlling a phase control angle of an ignition circuit 3 according to a deviation with output of a speed setting circuit 1. With a detection value of a power detection circuit 16 as control input, a switching circuit 9 controls the ignition circuit 3 according to a section in which the detection value corresponds to a set point in the switching circuit, and applies power voltage waves to the induction motor 5 through thinning out every other wave and then at every two waves from the full wave. Thus, a plural characteristic is given to the motor, the input power is saved to minimize a loss to occur, and further operation efficiency can be improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6651279A JPS55157993A (en) | 1979-05-29 | 1979-05-29 | Speed control system for induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6651279A JPS55157993A (en) | 1979-05-29 | 1979-05-29 | Speed control system for induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55157993A true JPS55157993A (en) | 1980-12-09 |
Family
ID=13317965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6651279A Pending JPS55157993A (en) | 1979-05-29 | 1979-05-29 | Speed control system for induction motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55157993A (en) |
-
1979
- 1979-05-29 JP JP6651279A patent/JPS55157993A/en active Pending
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