GB665793A - Direct current generators - Google Patents
Direct current generatorsInfo
- Publication number
- GB665793A GB665793A GB22715/49A GB2271549A GB665793A GB 665793 A GB665793 A GB 665793A GB 22715/49 A GB22715/49 A GB 22715/49A GB 2271549 A GB2271549 A GB 2271549A GB 665793 A GB665793 A GB 665793A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- winding
- condensers
- alternator
- excited
- 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
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/66—Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedances or switches
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
Abstract
665,793. Exciting dynamo-electric machines. ZANNONI, L. Sept. 1, 1949 [Sept. 3, 1948], No. 22715/49. Class 35. In an armaturereaction excited D.C. generator, the primary axis is excited by field coils 1, whilst the secondary armaturereaction excited axis is energized by polyphase armature currents of suitable phase flowing between tapping-points on the armature winding and an external circuit. In the form shown, the polyphase tappings on the armature winding 2 are connected through slip-rings 6, 7, 8 to condensers 9, 10, 11 which induce resonance currents in the armature winding, thus creating a secondary axis flux in quadrature with the primary flux produced by the exciting field coils 1. The load current from the brushes 4, 5 is passed through compensating windings in the usual way. In a modification, the effective value of the condensers may be varied by means of a variable-ratio transformer. The resonance may be modified by making the circuit slightly capacitative so that the leading current pro. duced assists the primary excitation. In a further modified form, the exciting winding 1 is dispensed with and the armature is supplied with polyphase current through condensers by an alternator on the same shaft, either directly through slip-rings or, if it is desired to use a reduced size of alternator, by energizing the armature winding by an inductively-coupled winding fed by connections along the rotor shaft to the alternator.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT665793X | 1948-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB665793A true GB665793A (en) | 1952-01-30 |
Family
ID=11298553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22715/49A Expired GB665793A (en) | 1948-09-03 | 1949-09-01 | Direct current generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB665793A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1616741A1 (en) * | 2003-04-18 | 2006-01-18 | Ultra Motor Company Limited | Electric motor |
-
1949
- 1949-09-01 GB GB22715/49A patent/GB665793A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1616741A1 (en) * | 2003-04-18 | 2006-01-18 | Ultra Motor Company Limited | Electric motor |
| EP1616741A4 (en) * | 2003-04-18 | 2007-06-27 | Ultra Motor Company Ltd | Electric motor |
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