GB1364752A - Reducing hunting of an induction motor - Google Patents

Reducing hunting of an induction motor

Info

Publication number
GB1364752A
GB1364752A GB355772A GB355772A GB1364752A GB 1364752 A GB1364752 A GB 1364752A GB 355772 A GB355772 A GB 355772A GB 355772 A GB355772 A GB 355772A GB 1364752 A GB1364752 A GB 1364752A
Authority
GB
United Kingdom
Prior art keywords
inverter
signal
control
hunting
sensor
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.)
Expired
Application number
GB355772A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB355772A priority Critical patent/GB1364752A/en
Priority to FR7204952A priority patent/FR2172491A5/fr
Priority to DE19722208994 priority patent/DE2208994C3/en
Priority claimed from DE19722208994 external-priority patent/DE2208994C3/en
Publication of GB1364752A publication Critical patent/GB1364752A/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
    • 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)
  • Inverter Devices (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

1364752 Control of AC motors V G YATSUK and V F PETRENKO 26 Jan 1972 3557/72 Heading H2J In an arrangement for reducing hunting in an induction motor 4 supplied from a controllable frequency inverter 10, a signal proportional to the derivative of the reactive load component of the current or power is used as positive feedback and in combination with a main control signal to control the frequency of the inverter in a sluice such as to reduce the hunting. As shown, a signal from a reactive current sensor 1 or a reactive power sensor 2 is applied to a differentiating unit 3 to produce the derivative which is added in the unit 12 to the control signal. The resulting signal controls a frequency controller 5 of the inverter 10. The sensor 1 is connected to a bank 11 of feed-back diodes of the inverter 10 which may be supplied from a rectifier 6 connected to an A.C. source. The rectifier 6 may have thyristors or diodes in a bridge circuit and be controlled by a phase control unit 7.
GB355772A 1972-01-26 1972-01-26 Reducing hunting of an induction motor Expired GB1364752A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB355772A GB1364752A (en) 1972-01-26 1972-01-26 Reducing hunting of an induction motor
FR7204952A FR2172491A5 (en) 1972-01-26 1972-02-15
DE19722208994 DE2208994C3 (en) 1972-02-25 Method and arrangement for controlling the speed of an asynchronous motor connected to a frequency converter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB355772A GB1364752A (en) 1972-01-26 1972-01-26 Reducing hunting of an induction motor
FR7204952A FR2172491A5 (en) 1972-01-26 1972-02-15
DE19722208994 DE2208994C3 (en) 1972-02-25 Method and arrangement for controlling the speed of an asynchronous motor connected to a frequency converter

Publications (1)

Publication Number Publication Date
GB1364752A true GB1364752A (en) 1974-08-29

Family

ID=51396719

Family Applications (1)

Application Number Title Priority Date Filing Date
GB355772A Expired GB1364752A (en) 1972-01-26 1972-01-26 Reducing hunting of an induction motor

Country Status (2)

Country Link
FR (1) FR2172491A5 (en)
GB (1) GB1364752A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119590A (en) * 1982-04-30 1983-11-16 Mitsubishi Electric Corp Apparatus for controlling an a-c powered elevator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137489A (en) * 1977-07-21 1979-01-30 General Electric Company Feedback control for reduction of cogging torque in controlled current AC motor drives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119590A (en) * 1982-04-30 1983-11-16 Mitsubishi Electric Corp Apparatus for controlling an a-c powered elevator
US4516664A (en) * 1982-04-30 1985-05-14 Mitsubishi Denki Kabushiki Kaisha Apparatus for controlling an A-C powered elevator

Also Published As

Publication number Publication date
DE2208994A1 (en) 1973-09-06
FR2172491A5 (en) 1973-09-28
DE2208994B2 (en) 1976-03-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee