GB396174A - Improvements relating to equipments for the control of direct current electric motors - Google Patents
Improvements relating to equipments for the control of direct current electric motorsInfo
- Publication number
- GB396174A GB396174A GB1160732A GB1160732A GB396174A GB 396174 A GB396174 A GB 396174A GB 1160732 A GB1160732 A GB 1160732A GB 1160732 A GB1160732 A GB 1160732A GB 396174 A GB396174 A GB 396174A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motors
- series
- shunt
- reduction
- parallel
- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
396,174. Control of D.C. motors. RAMSDEN, H. K., 26, Ashlands, Ashton-on- Mersev, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. April 22, 1932, No. 11607. Drawings to Specification. [Class 38 (iii).] In a traction system in which the shunt fields of compound-wound motors are weakened for high speed and strengthened for low speed, both for motoring and regenerative braking in series and in parallel, the change from maximum to minimum shunt field excitation, when the motor connections are about to be changed from parallel to series during regenerative braking, is effected in at least two steps, the motors remaining in parallel after the first reduction in field strength has taken place. Simultaneously with the first reduction in field strength a resistance may be introduced in series with the motor armatures. More than two stages of reduction may be used and when the motors are finally connected in series with their shunt fields fully reduced during regenerative braking, the shunt fields are again increased. The sequence of changes during motoring is the reverse of that during braking. Numerical examples of the shunt field currents are given in the Specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1160732A GB396174A (en) | 1932-04-22 | 1932-04-22 | Improvements relating to equipments for the control of direct current electric motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1160732A GB396174A (en) | 1932-04-22 | 1932-04-22 | Improvements relating to equipments for the control of direct current electric motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB396174A true GB396174A (en) | 1933-08-03 |
Family
ID=9989343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1160732A Expired GB396174A (en) | 1932-04-22 | 1932-04-22 | Improvements relating to equipments for the control of direct current electric motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB396174A (en) |
-
1932
- 1932-04-22 GB GB1160732A patent/GB396174A/en not_active Expired
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