GB517438A - Improvements in and relating to electric motor control systems - Google Patents
Improvements in and relating to electric motor control systemsInfo
- Publication number
- GB517438A GB517438A GB22366/38A GB2236638A GB517438A GB 517438 A GB517438 A GB 517438A GB 22366/38 A GB22366/38 A GB 22366/38A GB 2236638 A GB2236638 A GB 2236638A GB 517438 A GB517438 A GB 517438A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- motor
- starting winding
- relating
- electric motor
- 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
- 238000004804 winding Methods 0.000 abstract 4
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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
517,438. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. July 27, 1938, No. 22366. Convention date, July 30, 1937. [Class 38 (iii)] The motor 11 is started by energizing both its windings 12, 13, and two bi-metallic strips 14, 15, in circuit therewith are heated. Both strips bend in the same direction but one more quickly than the other so that contacts 17, 18, are opened to disconnect the starting winding 13, by the time the motor reaches normal speed. The strip 15 is disconnected and returns to its normal position while the strip 14 remains connected across a portion of the starting winding. It thus receives current determined by the motor speed. If the motor stalls or slows down the energization of the strip 14 is reduced and the strip returns to reclose the starting winding circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US517438XA | 1937-07-30 | 1937-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB517438A true GB517438A (en) | 1940-01-30 |
Family
ID=21973123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22366/38A Expired GB517438A (en) | 1937-07-30 | 1938-07-27 | Improvements in and relating to electric motor control systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB517438A (en) |
-
1938
- 1938-07-27 GB GB22366/38A patent/GB517438A/en not_active Expired
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