JPS6098893A - Controller for induction motor - Google Patents

Controller for induction motor

Info

Publication number
JPS6098893A
JPS6098893A JP58204953A JP20495383A JPS6098893A JP S6098893 A JPS6098893 A JP S6098893A JP 58204953 A JP58204953 A JP 58204953A JP 20495383 A JP20495383 A JP 20495383A JP S6098893 A JPS6098893 A JP S6098893A
Authority
JP
Japan
Prior art keywords
signal
load torque
inputted
torque
frequency
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
JP58204953A
Other languages
Japanese (ja)
Other versions
JPH0683591B2 (en
Inventor
Koji Ohashi
Satoshi Honma
Satoshi Ibori
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP58204953A priority Critical patent/JPH0683591B2/en
Publication of JPS6098893A publication Critical patent/JPS6098893A/en
Publication of JPH0683591B2 publication Critical patent/JPH0683591B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04Arrangements 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
    • H02P27/06Arrangements 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 prevent the impossibility in the acceleration and the stalling of an induction motor by always detecting a load torque, and controlling a motor at the rotating speed determined by the load torque when the load torque becomes a value larger than the torque corresponding to the speed command. CONSTITUTION:A calculator 6 calculates (T1/TL)<1/2> by a load torque signal TL and a rated torque signal T1, and a multiplier 7 calculates a frequency limit signal FX* by a rated frequency signal F1. A limiter 8 operates to compare a frequency command signal f* inputted from a control signal generator 5 with a frequency limit signal FX* inputted from the multiplier 7, to output the signal f* as it is as the signal F* when the signal F* is not inputted and in case of the signal FX* > the signal f*, and to output the signal FX* as the signal F* in a range of the signal FX* < the signal f*.
JP58204953A 1983-11-02 1983-11-02 Induction motor controller Expired - Lifetime JPH0683591B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58204953A JPH0683591B2 (en) 1983-11-02 1983-11-02 Induction motor controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58204953A JPH0683591B2 (en) 1983-11-02 1983-11-02 Induction motor controller

Publications (2)

Publication Number Publication Date
JPS6098893A true JPS6098893A (en) 1985-06-01
JPH0683591B2 JPH0683591B2 (en) 1994-10-19

Family

ID=16499047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58204953A Expired - Lifetime JPH0683591B2 (en) 1983-11-02 1983-11-02 Induction motor controller

Country Status (1)

Country Link
JP (1) JPH0683591B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10079556B2 (en) 2015-01-30 2018-09-18 Mitsubishi Electric Corporation Inverter device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5059719A (en) * 1973-09-25 1975-05-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5059719A (en) * 1973-09-25 1975-05-23

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10079556B2 (en) 2015-01-30 2018-09-18 Mitsubishi Electric Corporation Inverter device

Also Published As

Publication number Publication date
JPH0683591B2 (en) 1994-10-19

Similar Documents

Publication Publication Date Title
JPS60183990A (en) Speed controller of elevator
JPS5959099A (en) Controller for generator of vehicle
JPS6098893A (en) Controller for induction motor
JPS5537873A (en) Controller for dc motor
JPS6176089A (en) Vector controller for induction motor
JPH01218389A (en) Speed controller for motor
JPS56150987A (en) Controller for speed of wound-rotor induction motor
JPS60197183A (en) Speed controller of induction motor
JPS6299677A (en) Operation control system for variable speed pumping-up power generating system
JPH01259777A (en) Controller for motor
JPS5622590A (en) Controller for induction motor
JPH0393486A (en) Motor controller
JPS6281998A (en) Excitation control system
JPS5615186A (en) Controller for motor
JPH0370490A (en) Variable-speed induction motor
JPS5526063A (en) Water wheel speed governor
JPS6098107A (en) Turbine output control method
JPS6135189A (en) Controlling method of ac motor
JPS5698384A (en) Speed control system for motor
JPH01117684A (en) Controlling method for induction motor
JPS63147986A (en) Vibration reducing device for rotary compressor
JPS55147990A (en) Motor speed control system
JPS60216776A (en) Controller for drive motor
JPS6074986A (en) Controlling method of voltage type inverter device
JPS552377A (en) Speed control unit for motor