JPS57132791A - Control system for induction motor - Google Patents
Control system for induction motorInfo
- Publication number
- JPS57132791A JPS57132791A JP56212285A JP21228581A JPS57132791A JP S57132791 A JPS57132791 A JP S57132791A JP 56212285 A JP56212285 A JP 56212285A JP 21228581 A JP21228581 A JP 21228581A JP S57132791 A JPS57132791 A JP S57132791A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- instructing
- high speed
- motor
- control
- 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
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
- H02P21/08—Indirect field-oriented control; Rotor flux feed-forward control
- H02P21/09—Field phase angle calculation based on rotor voltage equation by adding slip frequency and speed proportional frequency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE:To stably control an induction motor by energizing the motor having shortcircuited secondary conductor from a variable frequency power source controlled in vector in response to the instructed torque value and lowering the component correspondig to the exciting current in a high speed range. CONSTITUTION:The primary coil of a squirrel cage induction motor 10 is energized by a variable frequency power source 60. AC vector control means 100 controls the current value, phase value and frequency of the energizing AC current. Frequency instructing means 120 decides primary frequency from the rotating frequency and the instruction value of slip frequency instructing means 500. Speed controlling means 600 compares the instructing speed with the output of rotating speed detecting means 20 to instruct the amount corresponding to the desired torque. Further, function generators 210, 220 are provided in the control means 100 to set as prescribed, and polyphase AC generator 150 is operated to linearly control it. Further, instructing means 650 for generating a signal which lowers the component corresponding to the exciting current is provided in the high speed range of the motor 10, thereby preventing the unstable control system in the high speed range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56212285A JPS57132791A (en) | 1981-12-25 | 1981-12-25 | Control system for induction motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56212285A JPS57132791A (en) | 1981-12-25 | 1981-12-25 | Control system for induction motor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1036977A Division JPS5396423A (en) | 1977-02-01 | 1977-02-01 | Control system for induction motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57132791A true JPS57132791A (en) | 1982-08-17 |
JPS6310672B2 JPS6310672B2 (en) | 1988-03-08 |
Family
ID=16620063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56212285A Granted JPS57132791A (en) | 1981-12-25 | 1981-12-25 | Control system for induction motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57132791A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59162792A (en) * | 1983-03-07 | 1984-09-13 | Toshiba Mach Co Ltd | Drive control system of induction motor |
JPS60194778A (en) * | 1984-03-13 | 1985-10-03 | Meidensha Electric Mfg Co Ltd | Vector control system of induction motor |
-
1981
- 1981-12-25 JP JP56212285A patent/JPS57132791A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59162792A (en) * | 1983-03-07 | 1984-09-13 | Toshiba Mach Co Ltd | Drive control system of induction motor |
JPH0347073B2 (en) * | 1983-03-07 | 1991-07-18 | Toshiba Machine Co Ltd | |
JPS60194778A (en) * | 1984-03-13 | 1985-10-03 | Meidensha Electric Mfg Co Ltd | Vector control system of induction motor |
Also Published As
Publication number | Publication date |
---|---|
JPS6310672B2 (en) | 1988-03-08 |
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