GB731809A - Improvements relating to electric motor control systems of the ward leonard type - Google Patents

Improvements relating to electric motor control systems of the ward leonard type

Info

Publication number
GB731809A
GB731809A GB2753751A GB2753751A GB731809A GB 731809 A GB731809 A GB 731809A GB 2753751 A GB2753751 A GB 2753751A GB 2753751 A GB2753751 A GB 2753751A GB 731809 A GB731809 A GB 731809A
Authority
GB
United Kingdom
Prior art keywords
generator
amplifiers
motor
amplifier
winding
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
GB2753751A
Inventor
Norman Simpson Wells
Hilton Law
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.)
English Electric Co Ltd
Original Assignee
English 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB2753751A priority Critical patent/GB731809A/en
Publication of GB731809A publication Critical patent/GB731809A/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)
  • Stopping Of Electric Motors (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

731,809. Automatic current control systems. ENGLISH ELECTRIC CO., Ltd. Feb. 23, 1953 [Nov. 23,1951], No. 27637/51. Class 38 (4). [Also in Group XXXVH] The current passing between the generator and motor of a Ward-Leonard set, in which the motor may be regeneratively braked, is limited by controlling the excitation of the generator in accordance with the output of a pair of selfsaturating magnetic amplifiers. The amplifiers 6, 16. are connected via oppositely poled rectifiers 7, 17 across a shunt 3 which may be the commutating pole winding of either the generator 1 or the motor 2 of the Ward- Leonard set. The control winding of amplifier 6 is energized under normal motoring conditions ; that of amplifier 17 when the motor 2 is acting as a generator for regenerative braking. The amplifiers control windings 4, 14 of a further self-saturating magnetic amplifier 9 which controls the energization of the field 1a of the generator 1. A further field winding 1b opposes and annuls the field set up by winding 1a due to the standing value of output current of amplifier 9. The amplifiers 6, 17 are so biased that they normally operate below the first knee of their characteristic and if the current in their control windings exceeds a predetermined maximum they saturate heavily and by reducing or increasing respectively the excitation of the machine 1 limit the current flowing under generating or braking conditions. In a modification, rectifiers 7, 17 are omitted. Specification 630,124 is referred to.
GB2753751A 1951-11-23 1951-11-23 Improvements relating to electric motor control systems of the ward leonard type Expired GB731809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2753751A GB731809A (en) 1951-11-23 1951-11-23 Improvements relating to electric motor control systems of the ward leonard type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2753751A GB731809A (en) 1951-11-23 1951-11-23 Improvements relating to electric motor control systems of the ward leonard type

Publications (1)

Publication Number Publication Date
GB731809A true GB731809A (en) 1955-06-15

Family

ID=10261188

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2753751A Expired GB731809A (en) 1951-11-23 1951-11-23 Improvements relating to electric motor control systems of the ward leonard type

Country Status (1)

Country Link
GB (1) GB731809A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1122616B (en) * 1955-07-18 1962-01-25 Hagenuk Neufeldt Kuhnke Gmbh Control arrangement for a direct current motor fed by an electric generator
US3089991A (en) * 1960-04-22 1963-05-14 Westinghouse Electric Corp Control of series motors
DE1176252B (en) * 1956-06-21 1964-08-20 Licentia Gmbh Arrangement for current limitation with the help of a magnetic amplifier in a control device
US3166700A (en) * 1960-07-11 1965-01-19 Clark Controller Co Generator fed motor control with current limit circuitry

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1122616B (en) * 1955-07-18 1962-01-25 Hagenuk Neufeldt Kuhnke Gmbh Control arrangement for a direct current motor fed by an electric generator
DE1176252B (en) * 1956-06-21 1964-08-20 Licentia Gmbh Arrangement for current limitation with the help of a magnetic amplifier in a control device
US3089991A (en) * 1960-04-22 1963-05-14 Westinghouse Electric Corp Control of series motors
US3166700A (en) * 1960-07-11 1965-01-19 Clark Controller Co Generator fed motor control with current limit circuitry

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