JPS57196887A - Controller for induction motor - Google Patents

Controller for induction motor

Info

Publication number
JPS57196887A
JPS57196887A JP56080052A JP8005281A JPS57196887A JP S57196887 A JPS57196887 A JP S57196887A JP 56080052 A JP56080052 A JP 56080052A JP 8005281 A JP8005281 A JP 8005281A JP S57196887 A JPS57196887 A JP S57196887A
Authority
JP
Japan
Prior art keywords
slip frequency
component
power factor
current
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.)
Pending
Application number
JP56080052A
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 JP56080052A priority Critical patent/JPS57196887A/en
Publication of JPS57196887A publication Critical patent/JPS57196887A/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
    • H02P23/08—Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency

Landscapes

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

Abstract

PURPOSE:To perform the control of a high speed current by applying the output of slip frequency compensating means for calculating the slip frequency of a transient state time by the power factor angle change of the primary current of a motor further as a slip frequency correcting signal. CONSTITUTION:A slip frequency compensating circuit 16 has a coordinates converter 16a which converts a secondary current I2 and an exciting current component I0 into equal phase component Icos and an orthogonal component Isin delayed by pi/2 from the component Icos via a voltage, arithmetic units 16b, for calculating and detecting the power factor angle, and a differentiator 16c for differentiating the output of the unit 16b and producing a slip frequency compensation signal omegaSB upon change of the power factor. The signal omegaSB is applied to an angular frequency omega* produced by a command from an adder 8', and a frequency command f* is produced by an adder 17.
JP56080052A 1981-05-28 1981-05-28 Controller for induction motor Pending JPS57196887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56080052A JPS57196887A (en) 1981-05-28 1981-05-28 Controller for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56080052A JPS57196887A (en) 1981-05-28 1981-05-28 Controller for induction motor

Publications (1)

Publication Number Publication Date
JPS57196887A true JPS57196887A (en) 1982-12-02

Family

ID=13707462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56080052A Pending JPS57196887A (en) 1981-05-28 1981-05-28 Controller for induction motor

Country Status (1)

Country Link
JP (1) JPS57196887A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106537164A (en) * 2013-12-30 2017-03-22 Abb瑞士股份有限公司 Method and system for detecting rotor fault

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106537164A (en) * 2013-12-30 2017-03-22 Abb瑞士股份有限公司 Method and system for detecting rotor fault
CN106537164B (en) * 2013-12-30 2019-03-08 Abb瑞士股份有限公司 For detecting the method and system of rotor fault
US10353004B2 (en) 2013-12-30 2019-07-16 Abb Schweiz Ag Method and system for detecting rotor fault using triaxial magnetic field sensor

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