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GB767173A - Improvements in and relating to synchronized speed control of d.c. motors - Google Patents

Improvements in and relating to synchronized speed control of d.c. motors

Info

Publication number
GB767173A
GB767173A GB2459852A GB2459852A GB767173A GB 767173 A GB767173 A GB 767173A GB 2459852 A GB2459852 A GB 2459852A GB 2459852 A GB2459852 A GB 2459852A GB 767173 A GB767173 A GB 767173A
Authority
GB
United Kingdom
Prior art keywords
speed control
frequency
motors
relating
demodulator
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
GB2459852A
Inventor
Leslie Carter Ludbrook
Peter Norman Prior
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 Thomson Houston Co Ltd
Original Assignee
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB2459852A priority Critical patent/GB767173A/en
Publication of GB767173A publication Critical patent/GB767173A/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
    • H02P7/26—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 discharge tubes
    • H02P7/265—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 discharge tubes 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)
  • Control Of Eletrric Generators (AREA)

Abstract

767,173. Automate speed control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 28, 1953 [Oct. 1, 1953], No. 24598/52. Drawings to Specification. Class 38 (4). In an automatic speed control system such as that described in Specifications 767,171 and 767,172, a D.C. motor is fed through a gridcontrolled rectifier, controlled by a demodulator and frequency-responsive network fed from a tacho-alternator. According to the present invention, this prior system is used as a coarse speed control, and in addition the speed is normally locked to a reference frequency which is injected into the circuit, either in series with the output of the frequency-responsive network or by a further winding on the demodulator transformer (Fig. 3, not shown).
GB2459852A 1953-10-01 1953-10-01 Improvements in and relating to synchronized speed control of d.c. motors Expired GB767173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2459852A GB767173A (en) 1953-10-01 1953-10-01 Improvements in and relating to synchronized speed control of d.c. motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2459852A GB767173A (en) 1953-10-01 1953-10-01 Improvements in and relating to synchronized speed control of d.c. motors

Publications (1)

Publication Number Publication Date
GB767173A true GB767173A (en) 1957-01-30

Family

ID=10214175

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2459852A Expired GB767173A (en) 1953-10-01 1953-10-01 Improvements in and relating to synchronized speed control of d.c. motors

Country Status (1)

Country Link
GB (1) GB767173A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097332A (en) * 1959-01-08 1963-07-09 Minnesota Mining & Mfg Speed control and regulating circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097332A (en) * 1959-01-08 1963-07-09 Minnesota Mining & Mfg Speed control and regulating circuits

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