JPS57166892A - Torque detection of induction motor - Google Patents

Torque detection of induction motor

Info

Publication number
JPS57166892A
JPS57166892A JP5121581A JP5121581A JPS57166892A JP S57166892 A JPS57166892 A JP S57166892A JP 5121581 A JP5121581 A JP 5121581A JP 5121581 A JP5121581 A JP 5121581A JP S57166892 A JPS57166892 A JP S57166892A
Authority
JP
Japan
Prior art keywords
torque
command
magnetic flux
resultant
fed
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
JP5121581A
Other languages
Japanese (ja)
Inventor
Masakazu Kobata
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.)
Toyo Denki Seizo KK
Toyo Electric Manufacturing Ltd
Original Assignee
Toyo Denki Seizo KK
Toyo Electric Manufacturing 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 Toyo Denki Seizo KK, Toyo Electric Manufacturing Ltd filed Critical Toyo Denki Seizo KK
Priority to JP5121581A priority Critical patent/JPS57166892A/en
Publication of JPS57166892A publication Critical patent/JPS57166892A/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
    • 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
    • H02P27/048—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 AC supply for only the rotor circuit or only the stator circuit
    • 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
    • H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
    • H02P2207/01—Asynchronous machines
    • 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 simply and practically detect torque by a method wherein the phase difference angle between a resultant phase current and a rotary field axis is obtained and an arithmetic process is performed. CONSTITUTION:A torque command and a magnetic flux command generated from a pattern generator 13 and the output in a torque magnetic flux detector 11 are compared by substracters 14, 14' and the deviation signal is supplied to controllers 15, 15' and controlling signals are sent so that the deviation signal may be obtained in accordance with the command from the pattern generator 13. A slip frequency command is fed by supplying a torque output signal to a function generator 16 and the frequency command of an inverter frequency is fed from an adder 17. And the magnitude command of the resultant currrent in a motor 3 is obtained from a function generator 16' to generate a voltage command from the controller 15''. A rectifier 9 performing torque control, a rotary magnetic field axis operator 10, and a torque magnetic flux detector 11 are provided and a resultant current obtained by rectifiying a phase current is analysed into a component generating torque and that genrating magnetic flux to obtain the product of these two components.
JP5121581A 1981-04-07 1981-04-07 Torque detection of induction motor Pending JPS57166892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5121581A JPS57166892A (en) 1981-04-07 1981-04-07 Torque detection of induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5121581A JPS57166892A (en) 1981-04-07 1981-04-07 Torque detection of induction motor

Publications (1)

Publication Number Publication Date
JPS57166892A true JPS57166892A (en) 1982-10-14

Family

ID=12880688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5121581A Pending JPS57166892A (en) 1981-04-07 1981-04-07 Torque detection of induction motor

Country Status (1)

Country Link
JP (1) JPS57166892A (en)

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