GB225554A - Improvements in or relating to the de-excitation of electric generators - Google Patents
Improvements in or relating to the de-excitation of electric generatorsInfo
- Publication number
- GB225554A GB225554A GB28268/24A GB2826824A GB225554A GB 225554 A GB225554 A GB 225554A GB 28268/24 A GB28268/24 A GB 28268/24A GB 2826824 A GB2826824 A GB 2826824A GB 225554 A GB225554 A GB 225554A
- Authority
- GB
- United Kingdom
- Prior art keywords
- exciter
- field
- generator
- exciting
- resistance
- 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
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/12—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal
- H02P9/123—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal for demagnetising; for reducing effects of remanence
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
225,554. Siemens - Schuckertwerke Ges. Nov. 26, 1923, [Convention date]. Exciting; protective or safety devices, auxiliary.-For effecting rapid de-excitation of an electric generator, a system of connections is employed whereby the field energy of the generator is returned into the exciting-machine, there being o subsequent short-circuiting of the generator field winding. Fig. 1 shows an alternator the field winding of which is energized by a shunt-wound exciter e. Between the exciter armature and the branching-off point of the two field windings b, c there is placed a resistance r with a normallyclosed switch s arranged in parallel. When it is required to de-excite the generator quickly, the switch s is opened, and the field energy of the generator surges back into the exciting-machine which will have its polarity reversed. The resistance r in conjunction with the other resistances and inductances makes the exciting circuit capable of oscillating. The shunt regulator d may be adjusted or a separate resistance may be introduced into the field circuit of the exciter simultaneously with the opening of the switch s. The field of the exciter, demagnetized or reversed, may be re-established from a separate source of continuous current; the exciter may be permanently excited by a separate source. Specifiation 148,625 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE225554X | 1923-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB225554A true GB225554A (en) | 1926-02-25 |
Family
ID=5861582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28268/24A Expired GB225554A (en) | 1923-11-26 | 1924-11-25 | Improvements in or relating to the de-excitation of electric generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB225554A (en) |
-
1924
- 1924-11-25 GB GB28268/24A patent/GB225554A/en not_active Expired
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