GB710415A - Improvements in or relating to electric circuits for controlling direct-current motors during the starting period - Google Patents

Improvements in or relating to electric circuits for controlling direct-current motors during the starting period

Info

Publication number
GB710415A
GB710415A GB9518/51A GB951851A GB710415A GB 710415 A GB710415 A GB 710415A GB 9518/51 A GB9518/51 A GB 9518/51A GB 951851 A GB951851 A GB 951851A GB 710415 A GB710415 A GB 710415A
Authority
GB
United Kingdom
Prior art keywords
valve
rectifier
starting period
relating
motor
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
GB9518/51A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB710415A publication Critical patent/GB710415A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

710,415. Control of D.C. motors. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 24. 1951 [April 27, 1950], No. 9518/51. Class 38(3) A direct-current motor has its armature 1 supplied through rectifier 2 and its field winding 4 through rectifier 5 which is controlled by means of high-vacuum valve 8. A grid 10 of the valve 8 is subjected to the armature voltage of the motor in opposition to a negative potential derived through resistor 18 from source 14, so that, during the starting period, the valve 8 is cut off and the rectifier 5 supplies full voltage to the winding 4 until the armature voltage reaches a predetermined value whereupon the control of the valve 8 is transferred to grid 9. The valve 8 is then controlled in accordance with the difference of potentials derived respectively from a speed-setting potentiometer 13 and the field winding 4, so allowing high speed operation of the motor with reduced field excitation.
GB9518/51A 1950-04-27 1951-04-24 Improvements in or relating to electric circuits for controlling direct-current motors during the starting period Expired GB710415A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL710415X 1950-04-27

Publications (1)

Publication Number Publication Date
GB710415A true GB710415A (en) 1954-06-09

Family

ID=19812790

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9518/51A Expired GB710415A (en) 1950-04-27 1951-04-24 Improvements in or relating to electric circuits for controlling direct-current motors during the starting period

Country Status (1)

Country Link
GB (1) GB710415A (en)

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