JPS563589A - Control method for variable voltage and variable frequency inverter - Google Patents

Control method for variable voltage and variable frequency inverter

Info

Publication number
JPS563589A
JPS563589A JP7685779A JP7685779A JPS563589A JP S563589 A JPS563589 A JP S563589A JP 7685779 A JP7685779 A JP 7685779A JP 7685779 A JP7685779 A JP 7685779A JP S563589 A JPS563589 A JP S563589A
Authority
JP
Japan
Prior art keywords
signal
frequency
speed command
feed back
command
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.)
Pending
Application number
JP7685779A
Other languages
Japanese (ja)
Inventor
Shinichi Ogawa
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 JP7685779A priority Critical patent/JPS563589A/en
Publication of JPS563589A publication Critical patent/JPS563589A/en
Pending 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
    • H02P23/20—Controlling the acceleration or deceleration

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Ac Motors In General (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To obtain a signal to effectively accelerate an induction motor by passing a signal with a fixed acceleration factor through a function generator which corresponds to necessary acceleration wherein the signal is obtained from the deviation signal of a speed command and a frequency command feed back signal passed through a comparator and an integrator. CONSTITUTION:A speed command signal 1 is compared with the feed back signal of a frequency signal and the magnitude is judged by a comparator 2. As a result, if the frequency signal does not meet the speed command, the frequency is tried to raise with a fixed time constant by an integrator 3. However, the frequency is converted into predetermined acceleration characteristics by a function generator 4. This signal becomes a frequency command signal and is converted into the gate pulse trains of a corresponding frequency through a voltage control frequency oscillator 5 and a ring counter 6. The gate pulse trains are applied to the gate of an inverter 7 to raise the frequency applied to an induction motor 8. Meanwhile, the signal is also fed back to the speed command through a feed back gain 9 to judge whether the signal has been accelerated up to a predetermined frequency.
JP7685779A 1979-06-20 1979-06-20 Control method for variable voltage and variable frequency inverter Pending JPS563589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7685779A JPS563589A (en) 1979-06-20 1979-06-20 Control method for variable voltage and variable frequency inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7685779A JPS563589A (en) 1979-06-20 1979-06-20 Control method for variable voltage and variable frequency inverter

Publications (1)

Publication Number Publication Date
JPS563589A true JPS563589A (en) 1981-01-14

Family

ID=13617315

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7685779A Pending JPS563589A (en) 1979-06-20 1979-06-20 Control method for variable voltage and variable frequency inverter

Country Status (1)

Country Link
JP (1) JPS563589A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812583A (en) * 1981-07-15 1983-01-24 Tsurumi Seisakusho:Kk Starting system of induction motor utilizing solar battery
JPS5812584A (en) * 1981-07-15 1983-01-24 Tsurumi Seisakusho:Kk Starting device of induction motor utilizing solar battery
JPS60241781A (en) * 1984-04-13 1985-11-30 Mitsubishi Electric Corp Controller for variable speed pump
JPS6212398A (en) * 1985-07-05 1987-01-21 Mitsubishi Electric Corp Controller for inverter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812583A (en) * 1981-07-15 1983-01-24 Tsurumi Seisakusho:Kk Starting system of induction motor utilizing solar battery
JPS5812584A (en) * 1981-07-15 1983-01-24 Tsurumi Seisakusho:Kk Starting device of induction motor utilizing solar battery
JPS60241781A (en) * 1984-04-13 1985-11-30 Mitsubishi Electric Corp Controller for variable speed pump
JPS6212398A (en) * 1985-07-05 1987-01-21 Mitsubishi Electric Corp Controller for inverter

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