GB1245183A - Speed control device for electric motors - Google Patents

Speed control device for electric motors

Info

Publication number
GB1245183A
GB1245183A GB02580/69A GB1258069A GB1245183A GB 1245183 A GB1245183 A GB 1245183A GB 02580/69 A GB02580/69 A GB 02580/69A GB 1258069 A GB1258069 A GB 1258069A GB 1245183 A GB1245183 A GB 1245183A
Authority
GB
United Kingdom
Prior art keywords
speed
amplifier
chopper
speed control
march
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
GB02580/69A
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.)
ABB Goerz AG
Original Assignee
Goerz Electro GmbH
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 Goerz Electro GmbH filed Critical Goerz Electro GmbH
Publication of GB1245183A publication Critical patent/GB1245183A/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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/22—Controlling the speed digitally using a reference oscillator, a speed proportional pulse rate feedback and a digital comparator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

1,245,183. Automatic speed control. GOERZ ELECTRO G.m.b.H. March 10, 1969 [March 11, 1968], No. 12580/69. Heading G3R. For regulating the speed of an electric motor a device 4 generates a square wave signal, of frequency proportional to the speed, which is applied to a D.C. amplifier 6 of the kind comprising a chopper, an A. C. amplifier, and a synchronous rectifier, the output of the amplifier being used to control the supply to the motor. Effectively the frequency and phase of the speed signal from contacts 4 is compared to those of the chopper supply 11 and a direct voltage is produced which is indicative of the error whenever the phase of the speed signal differs from a predetermined relationship with that of the chopper. The speed signals may be produced by a photo-cell or light dependent resistor in known manner.
GB02580/69A 1968-03-11 1969-03-10 Speed control device for electric motors Expired GB1245183A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT236768A AT283517B (en) 1968-03-11 1968-03-11 Pulse speed control device of an electric motor

Publications (1)

Publication Number Publication Date
GB1245183A true GB1245183A (en) 1971-09-08

Family

ID=3533039

Family Applications (1)

Application Number Title Priority Date Filing Date
GB02580/69A Expired GB1245183A (en) 1968-03-11 1969-03-10 Speed control device for electric motors

Country Status (3)

Country Link
AT (1) AT283517B (en)
DE (1) DE1910919A1 (en)
GB (1) GB1245183A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062225A (en) * 1976-08-23 1977-12-13 Nl Industries, Inc. Rotational viscometer and plastometer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062225A (en) * 1976-08-23 1977-12-13 Nl Industries, Inc. Rotational viscometer and plastometer

Also Published As

Publication number Publication date
DE1910919A1 (en) 1969-10-16
AT283517B (en) 1970-08-10

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