GB517676A - Improvements in and relating to electric control systems for dynamo-electric synchronous machines - Google Patents
Improvements in and relating to electric control systems for dynamo-electric synchronous machinesInfo
- Publication number
- GB517676A GB517676A GB22963/38A GB2296338A GB517676A GB 517676 A GB517676 A GB 517676A GB 22963/38 A GB22963/38 A GB 22963/38A GB 2296338 A GB2296338 A GB 2296338A GB 517676 A GB517676 A GB 517676A
- Authority
- GB
- United Kingdom
- Prior art keywords
- field
- armature
- pulsations
- relay
- armature current
- 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
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
- H02J3/42—Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
517,676. Control of AC. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 3, 1938. No. 22963. Convention date, Aug. 5, 1937. [Class 38 (iii)] The excitation of a sychronous machine is controlled in response to the armature current pulsations produced by weakly exciting the field winding while the machine is operating at subsynchronous speeds. A motor 1 is run up to speed with its armature connected to the supply and its field 4 connected in a closed circuit with resistance 7 and a relay 15 responds at a predetermined speed, in response to the pulsations produced in the armature current by the relative movement between the field poles and the rotating armature field to control a relay 24 and effect full excitation of the motor field 4. The field is weakly excited during the starting period through resistance 11 so that different armature current pulsations are produced by a field pole of one polarity passing like and unlike poles of the rotating armature field, and the relay 15 responds, at a predetermined speed, to the pulsations of armature current, when a predetermined magnetic angular relationship exists between the motor field poles and the rotating armature field.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US517676XA | 1937-08-05 | 1937-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB517676A true GB517676A (en) | 1940-02-06 |
Family
ID=21973267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22963/38A Expired GB517676A (en) | 1937-08-05 | 1938-08-03 | Improvements in and relating to electric control systems for dynamo-electric synchronous machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB517676A (en) |
-
1938
- 1938-08-03 GB GB22963/38A patent/GB517676A/en not_active Expired
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