GB666723A - Improvements in or relating to field excitation arrangements for electric alternators - Google Patents
Improvements in or relating to field excitation arrangements for electric alternatorsInfo
- Publication number
- GB666723A GB666723A GB795349A GB795349A GB666723A GB 666723 A GB666723 A GB 666723A GB 795349 A GB795349 A GB 795349A GB 795349 A GB795349 A GB 795349A GB 666723 A GB666723 A GB 666723A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alternator
- exciting
- rectifier
- main
- excitation
- 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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/34—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
666,723. Alternators. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. S. March 22, 1950 [March 23, 1949], No. 7953/49. Class 35. An excitation arrangement for an alternator includes an exciting alternator and a rectifier to feed D.C. to the main alternator excitation and a second rectifier to excite through a Boucherot circuit the exciting alternator from current supplied either by the main alternator or by the exciting alternator itself. The Figure shows a main alternator 10 supplied with D.C. excitation current from an exciting alternator 12 via a rectifier 17, both machines being mounted on the same shaft. The D.C. excitation current for the exciting alternator 12 is fed from the output lines 27, 28 of the main alternator 10 via the transformers 26, 30, 23 and rectifier 21. A condenser 25 is inserted in the circuit of the primary winding 24 of the transformer 23. The capacitance of this condenser and the inductance of the winding 24 are so selected as to provide a Boucherot circuit resonating at the frequency of the main alternator current. In a modification the excitation of the exciting alternator 12 is derived through a Boucherot circuit supplied with A.C. from the exciting alternator itself. In another arrangement, the rectifier supplying excitation current to the main alternator 10 is grid controlled and is controlled by a phase shift network regulated according to the voltage, current and optionally power factor of the main alternator 10. In all the above arrangements the Boucherot circuit may include a saturable reactor or transformer provided with further winding(s) for control purposes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB795349A GB666723A (en) | 1949-03-23 | 1949-03-23 | Improvements in or relating to field excitation arrangements for electric alternators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB795349A GB666723A (en) | 1949-03-23 | 1949-03-23 | Improvements in or relating to field excitation arrangements for electric alternators |
Publications (1)
Publication Number | Publication Date |
---|---|
GB666723A true GB666723A (en) | 1952-02-20 |
Family
ID=9842957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB795349A Expired GB666723A (en) | 1949-03-23 | 1949-03-23 | Improvements in or relating to field excitation arrangements for electric alternators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB666723A (en) |
-
1949
- 1949-03-23 GB GB795349A patent/GB666723A/en not_active Expired
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