JPS57211990A - Torque detecting circuit for induction motor - Google Patents

Torque detecting circuit for induction motor

Info

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
Application number
JP56095395A
Other languages
Japanese (ja)
Other versions
JPS633559B2 (en
Inventor
Hidetoshi Takei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Denki Seizo KK
Toyo Electric Manufacturing Ltd
Original Assignee
Toyo Denki Seizo KK
Toyo Electric Manufacturing Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Denki Seizo KK, Toyo Electric Manufacturing Ltd filed Critical Toyo Denki Seizo KK
Priority to JP56095395A priority Critical patent/JPS57211990A/en
Publication of JPS57211990A publication Critical patent/JPS57211990A/en
Publication of JPS633559B2 publication Critical patent/JPS633559B2/ja
Granted legal-status Critical Current

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.
JP56095395A 1981-06-22 1981-06-22 Torque detecting circuit for induction motor Granted JPS57211990A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009016210A (en) * 2007-07-05 2009-01-22 Toshiba Corp Induction heating cooker

Cited By (1)

* Cited by examiner, † Cited by third party
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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