GB378265A - Improvements in or relating to electric motor controllers - Google Patents

Improvements in or relating to electric motor controllers

Info

Publication number
GB378265A
GB378265A GB29763/31A GB2976331A GB378265A GB 378265 A GB378265 A GB 378265A GB 29763/31 A GB29763/31 A GB 29763/31A GB 2976331 A GB2976331 A GB 2976331A GB 378265 A GB378265 A GB 378265A
Authority
GB
United Kingdom
Prior art keywords
switch
winding
motor
current
impedance
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
GB29763/31A
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.)
Cutler Hammer Europe Ltd
Original Assignee
Igranic Electric Co 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 Igranic Electric Co Ltd filed Critical Igranic Electric Co Ltd
Publication of GB378265A publication Critical patent/GB378265A/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
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
    • H02P1/20—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor by progressive reduction of resistance in series with armature winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stopping Of Electric Motors (AREA)
  • Motor And Converter Starters (AREA)

Abstract

378,265. Master control of D.C. motors. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London.- (Assignees of Kuhn, C. W.; c/o Cutler- Hammer, Inc., 12th Street, Milwaukee, Wisconsin, U.S.A.) Oct 27, 1931, No. 29763. Convention date, Oct. 27, 1930. [Class 38 (iii).] Armature control. -Closure of switch 3 causes switch 1 to close, its winding being supplied through impedance r in parallel with armature A and winding 2a. As the motor accelerates, the current in winding 2a decreases, reverses, and increases in the opposite direction to a value sufficient to close switch 2 and exclude starting resistance R. Opening of switch 3 causes opening of switch 1 and closing down of the motor with gradual decrease of current in winding 2a to zero. It can be arranged that if switch 3 is reclosed before the motor has slowed down sufficiently, the switch 1 is not reclosed as its winding can only receive current through the impedance r. When however the motor has slowed down sufficiently the current in winding 2a can reverse and augment that through the impedance r to effect reclosure of switch 1.
GB29763/31A 1930-10-27 1931-10-27 Improvements in or relating to electric motor controllers Expired GB378265A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US378265XA 1930-10-27 1930-10-27

Publications (1)

Publication Number Publication Date
GB378265A true GB378265A (en) 1932-08-11

Family

ID=21896571

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29763/31A Expired GB378265A (en) 1930-10-27 1931-10-27 Improvements in or relating to electric motor controllers

Country Status (1)

Country Link
GB (1) GB378265A (en)

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