GB518476A - Improvements in and relating to rheostatic braking systems for electric motors - Google Patents
Improvements in and relating to rheostatic braking systems for electric motorsInfo
- Publication number
- GB518476A GB518476A GB2131638A GB2131638A GB518476A GB 518476 A GB518476 A GB 518476A GB 2131638 A GB2131638 A GB 2131638A GB 2131638 A GB2131638 A GB 2131638A GB 518476 A GB518476 A GB 518476A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- electric motors
- braking systems
- rheostatic braking
- braking
- 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
- 230000005284 excitation Effects 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
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
- H02P3/18—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 an AC motor
- H02P3/24—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 an AC motor by applying DC to the motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
518,476. Electric braking of A.C. motors. ENGLISH ELECTRIC CO., Ltd., AYRES, W. E. M., and RICHES. A. J. July 18, 1938, No. 21316. [Class 38 (iii)] In a rheostatic braking system for an A.C. motor shown as a three-phase induction motor, the D.C. excitation of the disconnected stator la, which may come from a separate generator 3 is raised automatically as the speed of the rotor 1b is reduced in order to keep up the potential across its slip-rings and thus make the braking effect dependent on the amount of resistance which may be manually cut out of the rheostat 2. In a modification D.C. excitat:on is supplied from the mains through a fullwave rectifier and no exciter is used. Other modifications using auxiliary excitation are described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2131638A GB518476A (en) | 1938-07-18 | 1938-07-18 | Improvements in and relating to rheostatic braking systems for electric motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2131638A GB518476A (en) | 1938-07-18 | 1938-07-18 | Improvements in and relating to rheostatic braking systems for electric motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB518476A true GB518476A (en) | 1940-02-28 |
Family
ID=10160811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2131638A Expired GB518476A (en) | 1938-07-18 | 1938-07-18 | Improvements in and relating to rheostatic braking systems for electric motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB518476A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2534423A (en) * | 1944-07-22 | 1950-12-19 | Cutler Hammer Inc | Braking system for induction motors |
| US2746000A (en) * | 1954-06-28 | 1956-05-15 | Vickers Electrical Co Ltd | Control of alternating current electric motor equipment |
-
1938
- 1938-07-18 GB GB2131638A patent/GB518476A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2534423A (en) * | 1944-07-22 | 1950-12-19 | Cutler Hammer Inc | Braking system for induction motors |
| US2746000A (en) * | 1954-06-28 | 1956-05-15 | Vickers Electrical Co Ltd | Control of alternating current electric motor equipment |
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