GB203772A - Improvements in and relating to the control of dynamo electric machines - Google Patents

Improvements in and relating to the control of dynamo electric machines

Info

Publication number
GB203772A
GB203772A GB1627722A GB1627722A GB203772A GB 203772 A GB203772 A GB 203772A GB 1627722 A GB1627722 A GB 1627722A GB 1627722 A GB1627722 A GB 1627722A GB 203772 A GB203772 A GB 203772A
Authority
GB
United Kingdom
Prior art keywords
generator
speed
motor
shaft
exciter
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
GB1627722A
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.)
HUGH WILLIAM CONWAY LIDDIARD
British Thomson Houston Co Ltd
Original Assignee
HUGH WILLIAM CONWAY LIDDIARD
British Thomson Houston 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 HUGH WILLIAM CONWAY LIDDIARD, British Thomson Houston Co Ltd filed Critical HUGH WILLIAM CONWAY LIDDIARD
Priority to GB1627722A priority Critical patent/GB203772A/en
Publication of GB203772A publication Critical patent/GB203772A/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
    • H02P7/34—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 Ward-Leonard arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

203,772. British Thomson-Houston Co., Ltd., Given, R. D., and Liddiard, H. W. C. June 12, 1922. Constant speed control systems.-The speed of an electric motor 2 fed by a controllable generator 1 is automatically maintained constant, irrespective of the speed at which the generator is driven, by arranging four exciter machines 3, 4, 5, 6, all of which are coupled to the shaft of the generator 1, so that 5 and 6 differentially excite 4, which excites the motor 2, and 4 and 5 differentially excite 3, which excite the generator 1, the characteristics of the machines being chosen so that a change in the speed of the generator shaft gives rise to a change of opposite sign in the differential excitations, thereby keeping approximately constant voltage applied to the armature and field of the motor 2. To change the motor speed as required, controlling means 8 are inserted in the field circuit of the exciter 3. A flywheel 7 is placed on the generator shaft, and an alternating current motor 9, automatically connected to mains 13 by a relay 12, is used to check the speed of the shaft when the motor 2 regenerates. In a simpler modification, the machine 4 is directly connected to the field of the generator 1, without employing the exciter 3, and the position of the controlling means 8 is correspondingly altered. The invention is intended for rolling- mill and winding motors.
GB1627722A 1922-06-12 1922-06-12 Improvements in and relating to the control of dynamo electric machines Expired GB203772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1627722A GB203772A (en) 1922-06-12 1922-06-12 Improvements in and relating to the control of dynamo electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1627722A GB203772A (en) 1922-06-12 1922-06-12 Improvements in and relating to the control of dynamo electric machines

Publications (1)

Publication Number Publication Date
GB203772A true GB203772A (en) 1923-09-12

Family

ID=10074412

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1627722A Expired GB203772A (en) 1922-06-12 1922-06-12 Improvements in and relating to the control of dynamo electric machines

Country Status (1)

Country Link
GB (1) GB203772A (en)

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