GB946627A - Improvements in or relating to arrangements for controlling the speed of direct current electric motors - Google Patents

Improvements in or relating to arrangements for controlling the speed of direct current electric motors

Info

Publication number
GB946627A
GB946627A GB42126/61A GB4212661A GB946627A GB 946627 A GB946627 A GB 946627A GB 42126/61 A GB42126/61 A GB 42126/61A GB 4212661 A GB4212661 A GB 4212661A GB 946627 A GB946627 A GB 946627A
Authority
GB
United Kingdom
Prior art keywords
rectifiers
regulator
firing
diodes
control
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
GB42126/61A
Inventor
Leonard William Eales
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB42126/61A priority Critical patent/GB946627A/en
Publication of GB946627A publication Critical patent/GB946627A/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
    • H02P7/285—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
    • H02P7/292—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 static converters, e.g. AC to DC
    • H02P7/293—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 static converters, e.g. AC to DC using phase control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

946,627. Rectifying; control of D.C. motors. GENERAL ELECTRIC CO. Ltd. Oct. 17, 1962 [Nov. 24, 1961], No. 42126/61. Headings H2F and H2J. A D.C. motor 1 is controlled over a highspeed range by an A.C. regulator 2 associated with a bridge rectifier comprising both diodes 3-8 and silicon controlled rectifiers 9-11, the latter being free-firing over this range. When the regulator 2 is adjusted to its minimum value, a unit 12 becomes effective to set the firing angles of rectifiers 9-11 for control over a lower range of speeds. If a high voltage is applied to the rectifiers 9-11 when they are under the control of unit 12, Zener diodes 13- 15 break down to cause the silicon controlled rectifiers to beome free-firing. Diodes 16-18 prevent the development of high peak inverse voltages across the rectifiers 9-11. The regulator 2 may be an induction regulator or other variable transformer.
GB42126/61A 1961-11-24 1961-11-24 Improvements in or relating to arrangements for controlling the speed of direct current electric motors Expired GB946627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB42126/61A GB946627A (en) 1961-11-24 1961-11-24 Improvements in or relating to arrangements for controlling the speed of direct current electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB42126/61A GB946627A (en) 1961-11-24 1961-11-24 Improvements in or relating to arrangements for controlling the speed of direct current electric motors

Publications (1)

Publication Number Publication Date
GB946627A true GB946627A (en) 1964-01-15

Family

ID=10422971

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42126/61A Expired GB946627A (en) 1961-11-24 1961-11-24 Improvements in or relating to arrangements for controlling the speed of direct current electric motors

Country Status (1)

Country Link
GB (1) GB946627A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398405A1 (en) * 1977-07-20 1979-02-16 Rotaprint Gmbh CONTINUOUSLY ADJUSTABLE ELECTRIC MOTOR DRIVE DEVICE FOR PRINTING, DUPLICATION AND SIMILAR MACHINES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398405A1 (en) * 1977-07-20 1979-02-16 Rotaprint Gmbh CONTINUOUSLY ADJUSTABLE ELECTRIC MOTOR DRIVE DEVICE FOR PRINTING, DUPLICATION AND SIMILAR MACHINES

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