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JPS56141798A - Controlling device of induction motor - Google Patents

Controlling device of induction motor

Info

Publication number
JPS56141798A
JPS56141798A JP4533380A JP4533380A JPS56141798A JP S56141798 A JPS56141798 A JP S56141798A JP 4533380 A JP4533380 A JP 4533380A JP 4533380 A JP4533380 A JP 4533380A JP S56141798 A JPS56141798 A JP S56141798A
Authority
JP
Japan
Prior art keywords
induction motor
phase
circuit
output
voltage
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
JP4533380A
Other languages
Japanese (ja)
Other versions
JPS6120236B2 (en
Inventor
Chihiro Okatsuchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4533380A priority Critical patent/JPS56141798A/en
Publication of JPS56141798A publication Critical patent/JPS56141798A/en
Publication of JPS6120236B2 publication Critical patent/JPS6120236B2/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
    • H02P27/08—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 with pulse width modulation
    • 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
    • H02P27/047—V/F converter, wherein the voltage is controlled proportionally with the frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To keep a current of the induction motor at lowest and improve a synthetic efficiency by a method wherein a power-factor angle of the induction motor is controlled so as to be kept at around 45 deg.. CONSTITUTION:An electric power from a DC power source 10 is PWM-controlled by an inverter circuit 11 and supplied to the induction motor 12 as an alternating current for a variable voltage, and a variable frequency. A frequency reference fR is frequency-converted by a V/F converter 14 and inputted to a driving circuit 17 through a counter 15 and a distributor 16. The frequency reference fR is compared with an output of a triangular wave oscillator 20 in a comparator 19 through a function generator 18 and fed to the driving circuit 17 through a PWM control circuit 21. A phase difference detector 24 supply an output of a logic circuit 25 detecting a voltage phase angle 45 deg. from the counter circuit 15, a phase signal S1' of a U-phase voltage and an output VPH changing in the polarity at a point shifting by a load power-factor angle 45 deg. from a current phase of a load current from a polarity detector 23 to an output control circuit 28 to make it control a voltage reference VR.
JP4533380A 1980-04-07 1980-04-07 Controlling device of induction motor Granted JPS56141798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4533380A JPS56141798A (en) 1980-04-07 1980-04-07 Controlling device of induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4533380A JPS56141798A (en) 1980-04-07 1980-04-07 Controlling device of induction motor

Publications (2)

Publication Number Publication Date
JPS56141798A true JPS56141798A (en) 1981-11-05
JPS6120236B2 JPS6120236B2 (en) 1986-05-21

Family

ID=12716376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4533380A Granted JPS56141798A (en) 1980-04-07 1980-04-07 Controlling device of induction motor

Country Status (1)

Country Link
JP (1) JPS56141798A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144597A (en) * 1982-02-23 1983-08-27 Asahi Chem Ind Co Ltd Power factor controller
JPS6022496A (en) * 1983-07-15 1985-02-04 Mayekawa Mfg Co Ltd High efficiency operating speed control system for ac motor
JPS60117698U (en) * 1984-01-19 1985-08-08 東洋電機製造株式会社 Electric motor speed control device
JPS60197190A (en) * 1984-03-19 1985-10-05 Hitachi Ltd Controller of ac motor
JPS6450793A (en) * 1987-08-19 1989-02-27 Mitsubishi Electric Corp Inverter
EP1657808A3 (en) * 2004-11-11 2013-02-20 Vacon Oyj Frequency converter overvoltage protection
CN105720894A (en) * 2016-04-21 2016-06-29 哈尔滨理工大学 Motor controller for suppressing electromotor harmonic and harmonic suppression method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144597A (en) * 1982-02-23 1983-08-27 Asahi Chem Ind Co Ltd Power factor controller
JPS6022496A (en) * 1983-07-15 1985-02-04 Mayekawa Mfg Co Ltd High efficiency operating speed control system for ac motor
JPS60117698U (en) * 1984-01-19 1985-08-08 東洋電機製造株式会社 Electric motor speed control device
JPS60197190A (en) * 1984-03-19 1985-10-05 Hitachi Ltd Controller of ac motor
JPS6450793A (en) * 1987-08-19 1989-02-27 Mitsubishi Electric Corp Inverter
EP1657808A3 (en) * 2004-11-11 2013-02-20 Vacon Oyj Frequency converter overvoltage protection
CN105720894A (en) * 2016-04-21 2016-06-29 哈尔滨理工大学 Motor controller for suppressing electromotor harmonic and harmonic suppression method

Also Published As

Publication number Publication date
JPS6120236B2 (en) 1986-05-21

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