JPS57211990A - Torque detecting circuit for induction motor - Google Patents
Torque detecting circuit for induction motorInfo
- Publication number
- JPS57211990A JPS57211990A JP56095395A JP9539581A JPS57211990A JP S57211990 A JPS57211990 A JP S57211990A JP 56095395 A JP56095395 A JP 56095395A JP 9539581 A JP9539581 A JP 9539581A JP S57211990 A JPS57211990 A JP S57211990A
- Authority
- JP
- Japan
- Prior art keywords
- command
- motor
- signal
- torque
- detecting 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.)
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/0077—Characterised by the use of a particular software algorithm
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE:To precisely detect the torque of an induction motor in a stationary power converter for driving the motor by performing a torque calculation with sinusoidal and cosine values corresponding to the voltage phase angle of the motor, thereby carrying out a slip compensation. CONSTITUTION:A torque detecting circuit 7 has a memory 7e, a microcomputer 7f, latch circuits 7g-7h, D/A converters 7a-7d, addition subtractors 7i-7j and a multiplier 7k. The effective and reactive components of a current detecting circuit 5 of an induction motor 3 are applied to the input of the circuit 7, signal data 700 such as a torque command 401, an inverter frequency command 451 is applied to the computer 7f, which thus outputs a torque detection signal 701. A comparator 41 receives the command 401 and the signal 701 and produces an effective current command 421, a comparator 43 receives a signal 501 and produces a slip command signal 441, and an adder receives a rotating speed signal 801 and produces a command 451. In this manner, effective feedback value can be obtained, thereby regulating the motor 3 and precisely driving the motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56095395A JPS57211990A (en) | 1981-06-22 | 1981-06-22 | Torque detecting circuit for induction motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56095395A JPS57211990A (en) | 1981-06-22 | 1981-06-22 | Torque detecting circuit for induction motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57211990A true JPS57211990A (en) | 1982-12-25 |
JPS633559B2 JPS633559B2 (en) | 1988-01-25 |
Family
ID=14136458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56095395A Granted JPS57211990A (en) | 1981-06-22 | 1981-06-22 | Torque detecting circuit for induction motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57211990A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009016210A (en) * | 2007-07-05 | 2009-01-22 | Toshiba Corp | Induction heating cooker |
-
1981
- 1981-06-22 JP JP56095395A patent/JPS57211990A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009016210A (en) * | 2007-07-05 | 2009-01-22 | Toshiba Corp | Induction heating cooker |
Also Published As
Publication number | Publication date |
---|---|
JPS633559B2 (en) | 1988-01-25 |
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