GB221061A - Improvements relating to direct current electric motors - Google Patents

Improvements relating to direct current electric motors

Info

Publication number
GB221061A
GB221061A GB1957823A GB1957823A GB221061A GB 221061 A GB221061 A GB 221061A GB 1957823 A GB1957823 A GB 1957823A GB 1957823 A GB1957823 A GB 1957823A GB 221061 A GB221061 A GB 221061A
Authority
GB
United Kingdom
Prior art keywords
motor
field
alternating current
current
speed
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
GB1957823A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1957823A priority Critical patent/GB221061A/en
Publication of GB221061A publication Critical patent/GB221061A/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
    • H02P7/2805—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 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 Direct Current Motors (AREA)

Abstract

221,061. Cooch, H. July 31, 1923. Speed-maintaining systems.-A direct-current motor is automatically controlled for constant speed by taking off alternating current from tappings or from a coupled generator, and passing the alternating current through a periodic contact device so as to produce compensatory impulses in the field or armature of the motor or in the field of an auxiliary generator connected in the motor circuit. In the arrangement shown in Fig. 1, the motor armature winding 1 is tapped so as to give alternating current to a transformer 5 the secondary of which is connected to a rated vibratory contact device 8, 9 and to a condenser 13 shunted across a resistance 10 in circuit with the motor field 2. Any departure from a set relation between the successive vibratory contacts and the alternating-current periods alters the effective value of the resistance 10, adjustments being made so that the alteration corrects the speed of the motor. The vibratory contact may be a double-pole reversing switch, or may be replaced by a rotary brush switch. Two or more motors may be simultaneously controlled so as to run synchronously.
GB1957823A 1923-07-31 1923-07-31 Improvements relating to direct current electric motors Expired GB221061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1957823A GB221061A (en) 1923-07-31 1923-07-31 Improvements relating to direct current electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1957823A GB221061A (en) 1923-07-31 1923-07-31 Improvements relating to direct current electric motors

Publications (1)

Publication Number Publication Date
GB221061A true GB221061A (en) 1924-09-04

Family

ID=10131696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1957823A Expired GB221061A (en) 1923-07-31 1923-07-31 Improvements relating to direct current electric motors

Country Status (1)

Country Link
GB (1) GB221061A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9649874B2 (en) 2013-06-06 2017-05-16 Yakov Miller Foil stamping machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9649874B2 (en) 2013-06-06 2017-05-16 Yakov Miller Foil stamping machine

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