GB1422965A - Dc motor control circuits - Google Patents

Dc motor control circuits

Info

Publication number
GB1422965A
GB1422965A GB1181172A GB1181172A GB1422965A GB 1422965 A GB1422965 A GB 1422965A GB 1181172 A GB1181172 A GB 1181172A GB 1181172 A GB1181172 A GB 1181172A GB 1422965 A GB1422965 A GB 1422965A
Authority
GB
United Kingdom
Prior art keywords
thyristor
armature
field winding
inductor
regeneration
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
GB1181172A
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.)
British Railways Board
Original Assignee
British Railways Board
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 British Railways Board filed Critical British Railways Board
Priority to GB1181172A priority Critical patent/GB1422965A/en
Publication of GB1422965A publication Critical patent/GB1422965A/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
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/281—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices the DC motor being operated in four quadrants

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

1422965 Regenerative braking of DC motors BRITISH RAILWAYS BOARD 12 June 1973 [14 March 1972] 11811/72 Heading H2J A D.C. series motor having an armature 9 and a field winding 10 is supplied from a D.C. supply 1 by a chopper circuit including a thyristor 2, the circuit also including an energy storage device comprising an inductor 4 and a capacitor 5 chargeable by means of a thyristor 3, firing of a further thyristor 6 placing the capacitor voltage across the field winding 10 and at the cathode of the thyristor 2 to commutate it, the currents in the armature 9 and field winding 10 which exist at the moment of commutation then being diverted to flow in diodes 8, 7 respectively so that the armature and field currents freewheel separately thus no commutation voltage appears at the armature terminals and no torque is developed. Regeneration is provided by a diode 12 and inductor 13, the main thyristor 2 not being used in regeneration. A switch 15 is provided to disconnect the field winding 10 if desired.
GB1181172A 1972-03-14 1972-03-14 Dc motor control circuits Expired GB1422965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1181172A GB1422965A (en) 1972-03-14 1972-03-14 Dc motor control circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1181172A GB1422965A (en) 1972-03-14 1972-03-14 Dc motor control circuits

Publications (1)

Publication Number Publication Date
GB1422965A true GB1422965A (en) 1976-01-28

Family

ID=9993132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1181172A Expired GB1422965A (en) 1972-03-14 1972-03-14 Dc motor control circuits

Country Status (1)

Country Link
GB (1) GB1422965A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

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