JPS57206298A - Torque detecting device for inverter driven three-phase induction motor - Google Patents

Torque detecting device for inverter driven three-phase induction motor

Info

Publication number
JPS57206298A
JPS57206298A JP56091410A JP9141081A JPS57206298A JP S57206298 A JPS57206298 A JP S57206298A JP 56091410 A JP56091410 A JP 56091410A JP 9141081 A JP9141081 A JP 9141081A JP S57206298 A JPS57206298 A JP S57206298A
Authority
JP
Japan
Prior art keywords
detector
multiplier
inverter
torque
detected
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
JP56091410A
Other languages
Japanese (ja)
Other versions
JPS6243436B2 (en
Inventor
Shotaro Murakami
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56091410A priority Critical patent/JPS57206298A/en
Publication of JPS57206298A publication Critical patent/JPS57206298A/en
Publication of JPS6243436B2 publication Critical patent/JPS6243436B2/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
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters

Abstract

PURPOSE:To obtain the torque detecting device at low cost by a method wherein a DC current detector, a rotational angle speed detector for motor and an inverter DC voltage detector are employed, and two operational amplifiers and a multiplier are combined together to the above detectors. CONSTITUTION:The induction motor 15 is driven by a converter 12 and a current type inverter device containing an inverter 14. Then, the inverter DC voltage detected by a detector 17 is passed through a spike voltage cutting circuit 18, and a DC current is detected by a detector 19, the resistance drop component caused by a stator and a rotor is subtracted using a subtracting machine 21, and the result is given to a dividing machine 24 through the intermediary of a multiplier 22. On the other hand, torque tau0 is obtained by forming an arithmetic operation applying the output of a rotating angle speed detector 16 to a dividing machine 24 through the intermediary of a multiplier 22. Accordingly, the torque can be detected by merely providing two circuits with the multiplier on the detector already installed, and the circuit for the device can be largely simplified.
JP56091410A 1981-06-11 1981-06-11 Torque detecting device for inverter driven three-phase induction motor Granted JPS57206298A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56091410A JPS57206298A (en) 1981-06-11 1981-06-11 Torque detecting device for inverter driven three-phase induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56091410A JPS57206298A (en) 1981-06-11 1981-06-11 Torque detecting device for inverter driven three-phase induction motor

Publications (2)

Publication Number Publication Date
JPS57206298A true JPS57206298A (en) 1982-12-17
JPS6243436B2 JPS6243436B2 (en) 1987-09-14

Family

ID=14025602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56091410A Granted JPS57206298A (en) 1981-06-11 1981-06-11 Torque detecting device for inverter driven three-phase induction motor

Country Status (1)

Country Link
JP (1) JPS57206298A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153495A (en) * 1983-02-21 1984-09-01 Hitachi Ltd Contoller for ac motor
JPS6028796A (en) * 1983-07-28 1985-02-13 Mitsubishi Electric Corp Controller of induction motor
JPS618640A (en) * 1984-06-22 1986-01-16 Mitsubishi Electric Corp Torque detecting device of alternating current electric motor
JP2013512647A (en) * 2009-11-26 2013-04-11 コンパニー ゼネラール デ エタブリッスマン ミシュラン Electric motor drive inverter with integrated regulator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01122530A (en) * 1987-11-06 1989-05-15 Mitsubishi Electric Corp Breaking performance deterioration predicting device for vacuum breaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153495A (en) * 1983-02-21 1984-09-01 Hitachi Ltd Contoller for ac motor
JPS6028796A (en) * 1983-07-28 1985-02-13 Mitsubishi Electric Corp Controller of induction motor
JPS618640A (en) * 1984-06-22 1986-01-16 Mitsubishi Electric Corp Torque detecting device of alternating current electric motor
JP2013512647A (en) * 2009-11-26 2013-04-11 コンパニー ゼネラール デ エタブリッスマン ミシュラン Electric motor drive inverter with integrated regulator

Also Published As

Publication number Publication date
JPS6243436B2 (en) 1987-09-14

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