GB519629A - Improvements in or relating to dynamo-electric generators - Google Patents
Improvements in or relating to dynamo-electric generatorsInfo
- Publication number
- GB519629A GB519629A GB27608/38A GB2760838A GB519629A GB 519629 A GB519629 A GB 519629A GB 27608/38 A GB27608/38 A GB 27608/38A GB 2760838 A GB2760838 A GB 2760838A GB 519629 A GB519629 A GB 519629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- generator
- winding
- current
- windings
- supplied
- 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
- H02P9/126—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 preventing pole reversal
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arc Welding Control (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
519,629. Supply systems for welding arcs; exciting dynamos. WESTINGHOUSE ELECTRIC & MANUFACTURING CO. Sept. 22, 1938, No. 27608. Convention date, Sept. 23, 1937. [Classes 35 and 38 (iv)] In order to prevent undersired reversals of polarity in a welding generator and to permit of reversal when required means are provided for providing a comparatively small constant current to the generator windings, the direction of which can be reversed by a switch when required, so that afer a stoppage of current it is restarted in the desired direction. The invention is described with respect to a cross-field generator with short - circuited ,brushes 21, 22, and series field-winding 16 and commutator winding 14. The Figure shows such a generator provided with an auxiliary winding 47 which is supplied with current through a transformer 40 connected to tappings on the field-windings of a motor 33 driving the generator. The current is rectified by a rectifier 44 and its direction controlled by a switch 10. The winding 47 may be dispensed with and the current supplied direct to the windings 14, 16. In a modification, the winding 47 is connected across a resistance in series with the fieldwinding of a motor driving the generator. In a further modification, the generator is driven by an internalcombustion engine and the winding 47 supplied from the ignition-battery.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US519629XA | 1937-09-23 | 1937-09-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB519629A true GB519629A (en) | 1940-04-02 |
Family
ID=21974491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27608/38A Expired GB519629A (en) | 1937-09-23 | 1938-09-22 | Improvements in or relating to dynamo-electric generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB519629A (en) |
-
1938
- 1938-09-22 GB GB27608/38A patent/GB519629A/en not_active Expired
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