JPS55160990A - Control system for induction motor - Google Patents

Control system for induction motor

Info

Publication number
JPS55160990A
JPS55160990A JP6770079A JP6770079A JPS55160990A JP S55160990 A JPS55160990 A JP S55160990A JP 6770079 A JP6770079 A JP 6770079A JP 6770079 A JP6770079 A JP 6770079A JP S55160990 A JPS55160990 A JP S55160990A
Authority
JP
Japan
Prior art keywords
detected
value
current
secondary current
primary
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
JP6770079A
Other languages
Japanese (ja)
Other versions
JPS6031194B2 (en
Inventor
Seiji Nakazawa
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing 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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP54067700A priority Critical patent/JPS6031194B2/en
Publication of JPS55160990A publication Critical patent/JPS55160990A/en
Publication of JPS6031194B2 publication Critical patent/JPS6031194B2/en
Expired 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
    • 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
    • H02P27/045—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 whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value

Landscapes

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

Abstract

PURPOSE:To dispense with detection of revolution speed, by using a primary voltage frequency signal instead of the detected revolution speed value of an induction motor. CONSTITUTION:The output voltage of a power inverter 3 is detected by a meter transformer 20. The detected value is applied to a slip angular frequency calculation circuit 21 together with the frequency signal of the primary voltage and the primary current value detected by a current transformer 17'. The difference between a primary voltage frequency signal and a set value is amplified by an amplifier 6 to provide set values for the secondary current and the slip frequency. In the secondary current control loop, the secondary current is calculated by the secondary current calculation circuit 24 to control a power rectifier 1 through a phase regulator 18 to equalize the primary current to a set value. In the slip angular frequency control loop, the time-differentiated value of a power factor angle is calculated by a circuit 30 to control the power inverter 3 through a distributor 11. As a result, the speed of revolution does not need to be detected. Therefore, the constitution is simplified.
JP54067700A 1979-05-30 1979-05-30 Control method of induction motor Expired JPS6031194B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54067700A JPS6031194B2 (en) 1979-05-30 1979-05-30 Control method of induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54067700A JPS6031194B2 (en) 1979-05-30 1979-05-30 Control method of induction motor

Publications (2)

Publication Number Publication Date
JPS55160990A true JPS55160990A (en) 1980-12-15
JPS6031194B2 JPS6031194B2 (en) 1985-07-20

Family

ID=13352485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54067700A Expired JPS6031194B2 (en) 1979-05-30 1979-05-30 Control method of induction motor

Country Status (1)

Country Link
JP (1) JPS6031194B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176488A (en) * 1984-02-21 1985-09-10 Mitsubishi Electric Corp Speed controller of induction motor
JPS60176487A (en) * 1984-02-21 1985-09-10 Mitsubishi Electric Corp Speed controller of induction motor
JPS61106091A (en) * 1984-10-25 1986-05-24 Yaskawa Electric Mfg Co Ltd Slip frequency calculator of induction motor and rotation controller of induction motor using the same
JPS6237089A (en) * 1985-08-06 1987-02-18 Yaskawa Electric Mfg Co Ltd Detecting method of secondary current of induction motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176488A (en) * 1984-02-21 1985-09-10 Mitsubishi Electric Corp Speed controller of induction motor
JPS60176487A (en) * 1984-02-21 1985-09-10 Mitsubishi Electric Corp Speed controller of induction motor
JPS61106091A (en) * 1984-10-25 1986-05-24 Yaskawa Electric Mfg Co Ltd Slip frequency calculator of induction motor and rotation controller of induction motor using the same
JPH0572195B2 (en) * 1984-10-25 1993-10-08 Yaskawa Electric Corp
JPS6237089A (en) * 1985-08-06 1987-02-18 Yaskawa Electric Mfg Co Ltd Detecting method of secondary current of induction motor

Also Published As

Publication number Publication date
JPS6031194B2 (en) 1985-07-20

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