GB205215A - Improvements in and relating to electric motor control - Google Patents
Improvements in and relating to electric motor controlInfo
- 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
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.
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)
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 |
-
1922
- 1922-07-15 GB GB1949722A patent/GB205215A/en not_active Expired
Cited By (2)
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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