JPS55150795A - Control device for induction motor - Google Patents
Control device for induction motorInfo
- Publication number
- JPS55150795A JPS55150795A JP5578279A JP5578279A JPS55150795A JP S55150795 A JPS55150795 A JP S55150795A JP 5578279 A JP5578279 A JP 5578279A JP 5578279 A JP5578279 A JP 5578279A JP S55150795 A JPS55150795 A JP S55150795A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- vicinity
- inputted
- control
- induction motor
- 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.)
- Granted
Links
- 230000006698 induction Effects 0.000 title abstract 3
- 230000001360 synchronised effect Effects 0.000 abstract 4
- 230000010349 pulsation Effects 0.000 abstract 2
- 230000008929 regeneration Effects 0.000 abstract 2
- 238000011069 regeneration method Methods 0.000 abstract 2
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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/024—Synchronous motors controlled by supply frequency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE:To decrease the torque pulsation in the vicinity of a synchronous speed, by controlling the phases of the voltage and current at the secondary side by the speed signal of an induction motor and by an operation status signal which commands the operation and regeneration, so that the power factor becomes approximately 1 in the vicinity of the synchronous speed. CONSTITUTION:The output signals from a position sensor 3 and a transformer 9 are inputted to a secondary-voltage phase detector 10 of an induction motor 2, and the output signals from a speed generator 4 and a speed control circuit 12 are inputted to a control-lead-angle command circuit 17. The outputs from the circuit 17 and the detector 10 are inputted to the secondary-side pulse-phase shifter 18 whose characteristics are such that the control-lead angle beta becomes large with the increase of a control signal Ecbeta in the region below the synchronous speed and S>0, and beta becomes small with the increase of Ecbeta in the region S<0; where S denotes a rotating speed as slippage. In this constitution, the phases of the voltage and current on the secondary side are controlled so that the power factor becomes approximately 1 in the vicinity of the motor and the operation status signal which commands the operation and regeneration, thereby the torque pulsation in the vicinity of the synchronous speed can be reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5578279A JPS55150795A (en) | 1979-05-09 | 1979-05-09 | Control device for induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5578279A JPS55150795A (en) | 1979-05-09 | 1979-05-09 | Control device for induction motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55150795A true JPS55150795A (en) | 1980-11-22 |
| JPS6310674B2 JPS6310674B2 (en) | 1988-03-08 |
Family
ID=13008460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5578279A Granted JPS55150795A (en) | 1979-05-09 | 1979-05-09 | Control device for induction motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55150795A (en) |
-
1979
- 1979-05-09 JP JP5578279A patent/JPS55150795A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6310674B2 (en) | 1988-03-08 |
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