GB875379A - Improvements in or relating to control arrangements for slip-ring induction motors - Google Patents

Improvements in or relating to control arrangements for slip-ring induction motors

Info

Publication number
GB875379A
GB875379A GB2798758A GB2798758A GB875379A GB 875379 A GB875379 A GB 875379A GB 2798758 A GB2798758 A GB 2798758A GB 2798758 A GB2798758 A GB 2798758A GB 875379 A GB875379 A GB 875379A
Authority
GB
United Kingdom
Prior art keywords
motor
tapping
slip
relating
rectifier
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
GB2798758A
Inventor
Erich Siegfried Friedlander
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2798758A priority Critical patent/GB875379A/en
Publication of GB875379A publication Critical patent/GB875379A/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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/24—Variable impedance in stator or rotor circuit
    • H02P25/26—Variable impedance in stator or rotor circuit with arrangements for controlling secondary impedance

Landscapes

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

Abstract

875,379. Control of motors. GENERAL ELECTRIC CO. Ltd. Aug. 28, 1959 [Sept. 1, 1958], No. 27987/58. Class 38 (3). The rotor winding of an induction motor 1 is connected through transformer 4 and rectifier 5 to the armature of a D.C. motor 7 which is coupled directly to the induction motor. Initially, tapping 14 is in the position shown and moves automatically to higher tapping- points as the speed increases. Variable excitation for field winding 9 of the D.C. motor is provided by potentiometer 10, movement of tapping 13 allowing the field current to be varied continuously and reversibly. Full speed operation is reached by overcoming the voltagedrop in the rectifier by reversing the back- E.M.F. of the motor 7. The induction motor may then be operated as a synchronous motor. In an alternative arrangement the D.C. motor drives a generator for feeding power back to the A.C. supply. Specification 868,763 is referred to.
GB2798758A 1958-09-01 1958-09-01 Improvements in or relating to control arrangements for slip-ring induction motors Expired GB875379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2798758A GB875379A (en) 1958-09-01 1958-09-01 Improvements in or relating to control arrangements for slip-ring induction motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2798758A GB875379A (en) 1958-09-01 1958-09-01 Improvements in or relating to control arrangements for slip-ring induction motors

Publications (1)

Publication Number Publication Date
GB875379A true GB875379A (en) 1961-08-16

Family

ID=10268466

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2798758A Expired GB875379A (en) 1958-09-01 1958-09-01 Improvements in or relating to control arrangements for slip-ring induction motors

Country Status (1)

Country Link
GB (1) GB875379A (en)

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