GB205215A - Improvements in and relating to electric motor control - Google Patents

Improvements in and relating to electric motor control

Info

Publication number
GB205215A
GB205215A GB1949722A GB1949722A GB205215A GB 205215 A GB205215 A GB 205215A GB 1949722 A GB1949722 A GB 1949722A GB 1949722 A GB1949722 A GB 1949722A GB 205215 A GB205215 A GB 205215A
Authority
GB
United Kingdom
Prior art keywords
motors
speed
armatures
current
field frames
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
GB1949722A
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 GB1949722A priority Critical patent/GB205215A/en
Publication of GB205215A publication Critical patent/GB205215A/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
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors

Abstract

205,215. British Thomson-Houston Co., Ltd., and Given, R. D. July 15, 1922. Speed-maintaining systems. - In order to maintain constant but adjustable, speed ratios between motors driving different parts of papermaking or other machinery, one of the motors 1, acting as the master motor, drives a small alternator 9 supplying current to rotating wound armatures of small machines 14 driven respectively by the other motors of the group 2, 3. The magnetization of the armatures due to the current rotates in a direction opposite to that in which the armatures are driven through variable ratio pulleys 25, and is thus normally stationary with regard to rotatable field frames excited by direct current from a motor generator 12. The field frames are geared through spindles 6 to brush shifting or other speed-changing devices adapted to correct the speed of the motors.
GB1949722A 1922-07-15 1922-07-15 Improvements in and relating to electric motor control Expired GB205215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1949722A GB205215A (en) 1922-07-15 1922-07-15 Improvements in and relating to electric motor control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1949722A GB205215A (en) 1922-07-15 1922-07-15 Improvements in and relating to electric motor control

Publications (1)

Publication Number Publication Date
GB205215A true GB205215A (en) 1923-10-15

Family

ID=10130338

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1949722A Expired GB205215A (en) 1922-07-15 1922-07-15 Improvements in and relating to electric motor control

Country Status (1)

Country Link
GB (1) GB205215A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971978C (en) * 1940-06-29 1959-05-06 Siemens Ag Arrangement to achieve the same starting or stopping times of several three-phase shunt motors running at different operating speeds
DE1102885B (en) * 1956-12-17 1961-03-23 Siemens Ag Control for multi-motor drives with three-phase motors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971978C (en) * 1940-06-29 1959-05-06 Siemens Ag Arrangement to achieve the same starting or stopping times of several three-phase shunt motors running at different operating speeds
DE1102885B (en) * 1956-12-17 1961-03-23 Siemens Ag Control for multi-motor drives with three-phase motors

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