GB180754A - Improvements relating to direct-current electric motors - Google Patents

Improvements relating to direct-current electric motors

Info

Publication number
GB180754A
GB180754A GB677021A GB677021A GB180754A GB 180754 A GB180754 A GB 180754A GB 677021 A GB677021 A GB 677021A GB 677021 A GB677021 A GB 677021A GB 180754 A GB180754 A GB 180754A
Authority
GB
United Kingdom
Prior art keywords
field
motor
winding
direct
electric motors
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
GB677021A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB677021A priority Critical patent/GB180754A/en
Publication of GB180754A publication Critical patent/GB180754A/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
    • H02P7/298—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 controlling armature and field supplies
    • H02P7/2985—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 controlling armature and field supplies whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
    • 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
    • H02P7/285—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 controlling armature supply only
    • H02P7/288—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 controlling armature supply only using variable impedance
    • H02P7/2885—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 controlling armature supply only using variable impedance whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

180,754. Butler, R. J., and Metropolitan-Vickers Electrical Co., Ltd. March 1, 1921. Exciting. - In a continuous - current compound-wound motor, such as a variable - speed rolling-mill motor, the rate of increase of field flux upon increase of load is reduced by means of an exciter operating with. an unsaturated field and driven at a speed proportional to that of the motor and itself excited in accordance with variations of the main current of the motor. In the arrangement shown in Fig. 1, the exciter armature 7 is connected to a third field winding 11 on the motor which acts in opposition to the series winding 3. In a modification, the armature 7 is connected in opposition in the shunt field-winding circuit. The field winding 8 may be connected across a resistance 10 in the series field circuit. Specification 4795/06 is referred to.
GB677021A 1921-03-01 1921-03-01 Improvements relating to direct-current electric motors Expired GB180754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB677021A GB180754A (en) 1921-03-01 1921-03-01 Improvements relating to direct-current electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB677021A GB180754A (en) 1921-03-01 1921-03-01 Improvements relating to direct-current electric motors

Publications (1)

Publication Number Publication Date
GB180754A true GB180754A (en) 1922-06-01

Family

ID=9820425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB677021A Expired GB180754A (en) 1921-03-01 1921-03-01 Improvements relating to direct-current electric motors

Country Status (1)

Country Link
GB (1) GB180754A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501528A (en) * 1944-01-25 1950-03-21 Gen Electric Electrical system
US2691752A (en) * 1951-06-21 1954-10-12 Westinghouse Electric Corp Overload protection in ward leonard drive system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501528A (en) * 1944-01-25 1950-03-21 Gen Electric Electrical system
US2691752A (en) * 1951-06-21 1954-10-12 Westinghouse Electric Corp Overload protection in ward leonard drive system

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