JPS5755781A - Speed control of induction motor - Google Patents
Speed control of induction motorInfo
- Publication number
- JPS5755781A JPS5755781A JP55129834A JP12983480A JPS5755781A JP S5755781 A JPS5755781 A JP S5755781A JP 55129834 A JP55129834 A JP 55129834A JP 12983480 A JP12983480 A JP 12983480A JP S5755781 A JPS5755781 A JP S5755781A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- vector
- invertor
- compared
- difference
- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/06—Rotor flux based control involving the use of rotor position or rotor speed sensors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE:To perform static vector control by a method wherein the phase of a secondary interlink flux vector is compared with that of an exciting current instruction vector of an invertor and a speed signal is obtained through a PLL control which is performed so as to make the phase difference between the two vectors zero. CONSTITUTION:A secondary interlink flux vector phi2 of an induction motor 1 is obtained by a vector computor 2 and the phase of an exciting component phi1 of an invertor 4 is compared with the phase of phi2 so as to make the former coincide with the latter and a frequency component f1 of the phase deviation is given to an oscillator OSC. And the difference fN between f1 and an output signal f2 which is obtained by putting an output current I2 into a limitter amplifier Sf is compared with a speed instruction NS as a speed signal and the output current I2 corresponding to the difference is obtained. The output I2 is vector-integrated with phi1 so that the excitation of the invertor 4 is controlled by a two-phase/three-phase converter. Thus the motor 1 is vector-controlled by a static detection without using a tachometer- generator or a searching coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55129834A JPS5755781A (en) | 1980-09-17 | 1980-09-17 | Speed control of induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55129834A JPS5755781A (en) | 1980-09-17 | 1980-09-17 | Speed control of induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5755781A true JPS5755781A (en) | 1982-04-02 |
Family
ID=15019374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55129834A Pending JPS5755781A (en) | 1980-09-17 | 1980-09-17 | Speed control of induction motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5755781A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0105511A2 (en) | 1982-10-04 | 1984-04-18 | Hitachi, Ltd. | Control method for induction motors |
| JPS59117479A (en) * | 1982-12-21 | 1984-07-06 | Fanuc Ltd | Speed detecting system for servo motor |
| JPS6188776A (en) * | 1984-10-03 | 1986-05-07 | Nippon Steel Corp | Roll drive monitor |
| JPS6225888A (en) * | 1985-07-25 | 1987-02-03 | Mitsubishi Electric Corp | Controller for induction motor |
| JPS6369491A (en) * | 1986-09-11 | 1988-03-29 | Fuji Electric Co Ltd | Variable speed controller for induction motor |
-
1980
- 1980-09-17 JP JP55129834A patent/JPS5755781A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0105511A2 (en) | 1982-10-04 | 1984-04-18 | Hitachi, Ltd. | Control method for induction motors |
| JPS59117479A (en) * | 1982-12-21 | 1984-07-06 | Fanuc Ltd | Speed detecting system for servo motor |
| JPH0145319B2 (en) * | 1982-12-21 | 1989-10-03 | Fanuc Ltd | |
| JPS6188776A (en) * | 1984-10-03 | 1986-05-07 | Nippon Steel Corp | Roll drive monitor |
| JPS6225888A (en) * | 1985-07-25 | 1987-02-03 | Mitsubishi Electric Corp | Controller for induction motor |
| JPS6369491A (en) * | 1986-09-11 | 1988-03-29 | Fuji Electric Co Ltd | Variable speed controller for induction motor |
| JPH0771400B2 (en) * | 1986-09-11 | 1995-07-31 | 富士電機株式会社 | Variable speed controller for induction motor |
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