GB369638A - Improvements in synchronous induction dynamo-electric machines - Google Patents
Improvements in synchronous induction dynamo-electric machinesInfo
- Publication number
- GB369638A GB369638A GB3873730A GB3873730A GB369638A GB 369638 A GB369638 A GB 369638A GB 3873730 A GB3873730 A GB 3873730A GB 3873730 A GB3873730 A GB 3873730A GB 369638 A GB369638 A GB 369638A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- commutator
- current
- secondary winding
- field
- 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
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/28—Asynchronous induction motors having compensating winding for improving phase angle
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc Machiner (AREA)
Abstract
369,638. Dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and GIBBS, W. J., 44, Grosvenor Road, Rugby. Dec. 23, 1930, No. 38737. [Class 35.] Exciting.-An alternating current machine has a commutator winding 3 inductively related to a primary winding 1 and bothinductively related and conductively connected to a secondary winding 7, 8, 9, all windings having the same number of poles and the secondary winding being so connected to polyphase brush-gear 4, 5, 6 on the commutator that the phase rotation of the E.M.F.s' injected in the secondary winding is opposite to that of the E.M.F.'s induced therein; the ratio of commutator winding M.M.F. to secondary winding M.M.F. is designed to be so low (e.g. about 2 per cent) that the machine will start as an uncompensated induction motor and accelerate into synchronism without any change of connections. At synchronous speed the secondary winding acts as a field winding supplied with continuous current from the commutator, and the field current and power factor may be controlled by means of an adjustable resistance inserted in the portion of the field winding which carries the full current. In a modification, a fixed resistance 11 is connected in one branch 9 of the field winding so that by moving the brushes the current in this branch can be varied between zero and full current with consequent variation in the effect of the resistance. Both ends of the secondary phase may be connected to commutator brushes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3873730A GB369638A (en) | 1930-12-23 | 1930-12-23 | Improvements in synchronous induction dynamo-electric machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3873730A GB369638A (en) | 1930-12-23 | 1930-12-23 | Improvements in synchronous induction dynamo-electric machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB369638A true GB369638A (en) | 1932-03-23 |
Family
ID=10405379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3873730A Expired GB369638A (en) | 1930-12-23 | 1930-12-23 | Improvements in synchronous induction dynamo-electric machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB369638A (en) |
-
1930
- 1930-12-23 GB GB3873730A patent/GB369638A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB369638A (en) | Improvements in synchronous induction dynamo-electric machines | |
| SU15012A1 (en) | Induction motor | |
| US1742957A (en) | Alternating-current dynamo-electric machine | |
| GB498366A (en) | Electric generators for simultaneously producing direct currents of different voltages | |
| GB337097A (en) | Alternating current synchronous motors | |
| GB390195A (en) | Improvements in and relating to electric motors | |
| US1643327A (en) | Alternating-current motor | |
| GB210936A (en) | Improvements in induction-starting synchronous motors | |
| GB647681A (en) | Improvements in and relating to dynamo electric machines | |
| GB323498A (en) | Improvements in or relating to dynamo-electric machines | |
| GB234841A (en) | Improvements in and relating to dynamo electric machines | |
| GB417137A (en) | Improvements in dynamo-electric machines | |
| GB239571A (en) | Improvements in alternating current electric machinery | |
| GB466719A (en) | Improvements in and relating to dynamo electric machines | |
| GB495386A (en) | Improvements in regulating means for cascade-connected commutator and induction machines | |
| GB739580A (en) | Improvements in or relating to single-phase alternating current motors | |
| GB384991A (en) | Method of and means for driving knitting and like machines | |
| GB422553A (en) | Improvements in and relating to electric motor control systems | |
| GB392299A (en) | Improvements in and relating to dynamo electric machines | |
| GB232968A (en) | Improvements in and relating to alternating current dynamo electric machines | |
| GB301848A (en) | Improvements in or relating to alternating current dynamo electric machines | |
| GB378975A (en) | Improvements in or relating to electric motors | |
| GB320901A (en) | Improvement in alternating current motors | |
| GB387024A (en) | Improvements in or relating to electric motors | |
| GB606385A (en) | Improvements in and relating to dynamo electric machines |