DE311674C - - Google Patents
Info
- Publication number
- DE311674C DE311674C DENDAT311674D DE311674DA DE311674C DE 311674 C DE311674 C DE 311674C DE NDAT311674 D DENDAT311674 D DE NDAT311674D DE 311674D A DE311674D A DE 311674DA DE 311674 C DE311674 C DE 311674C
- Authority
- DE
- Germany
- Prior art keywords
- winding
- wedges
- short
- circuit
- rods
- 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.)
- Active
Links
- 238000004804 winding Methods 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
- H02K3/16—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots for auxiliary purposes, e.g. damping or commutating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Windings For Motors And Generators (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Zur Vermeidung unzulässiger Erhitzungen der umlaufenden Feldmagnete von Turbogeneratoren wird häufig eine Käfigwicklung vorgesehen. Bei den in Verwendung befindlichen Läufern aus Stahl besteht die Schwierigkeit, die Wicklung unterzubringen, da sie starke Ströme aufnehmen muß. Es ' wurde bereits vorgeschlagen, die Abschlußkeile der Nuten selbst zu einer Kurzschlußwicklung zu vereinigen. Infolge der hohen Frequenz der Kurzschlußströme, welche doppelt so groß ist wie die des Ankerstromes, tritt jedoch in diesen Keilen die Wirkung der Stromverdrängung auf, und die Keile müssen großen Querschnitt erhalten, was praktisch kaum möglich ist.To avoid impermissible heating of the rotating field magnets of turbo generators a cage winding is often provided. The steel runners in use have the difficulty of to accommodate the winding, since it must absorb strong currents. It 'already became proposed to unite the end wedges of the slots themselves into a short-circuit winding. As a result of the high frequency of the short-circuit currents, which is twice as large as that of the armature current, however, occurs in this Wedges have the effect of current displacement, and the wedges must have a large cross-section received, which is practically hardly possible.
Durch die Erfindung wird der nötige Querschnitt für die Kurzschlußwicklung geschaffen, ohne daß hierdurch der für die Feldwicklung zur Verfügung stehende Nutenraum verringert würde. Die Erfindung besteht darin, daß oberhalb der Abschlußkeile für die Wicklung, die entsprechend geringe Höhe erhalten, in Erweiterungen der Nut Kupferstäbe eingeschoben werden, welche zu einer Kurzschlußwicklung verbunden werden.The invention creates the necessary cross-section for the short-circuit winding, without thereby reducing the slot space available for the field winding would. The invention consists in that above the termination wedges for the winding that correspondingly low height obtained, inserted copper rods in extensions of the groove which are connected to a short-circuit winding.
Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung. 1 ist das Feldeisen. 2 sind die Nuten, in welchen die Feldwicklung 3 gelagert ist. 4 sind Keile, welche in' üblicher Ausführung aus Stahl oder anderem geeigneten Material hergestellt sind und die Wicklung halten. 5 sind Kupferstäbe, welche oberhalb der Keile 4 eingeschoben sind und die so breit sind, wie mit Rücksicht auf die Festigkeit der Zahnköpfe 6 irgend möglich ist. Da die Keile 4 die Wicklung 3 gegen die Wirkung der Zentrifugalkraft sichern, so brauchen die Zahnköpfe 6 nur noch eine solche Festigkeit zu besitzen, daß sie die geringen Zentrifugalkräfte der Kurzschlußstäbe 5 aufnehmen können. Infolgedessen können die Zahnköpfe 6 sehr schmal bemessen und die Kurzschlußstäbe 5 sehr breit werden, so daß sie den nötigen Querschnitt bei sehr geringer Höhe erhalten können. Der Durchmesser des Feldmagneten wird also durch die Dämpferwicklung unerheblich vergrößert. Die Kurzschlußstäbe 5 können in 'irgendeiner Weise zu einer geschlossenen Dämpferwicklung vereinigt werden.The drawing shows an embodiment of the invention. 1 is the field iron. 2 are the Grooves in which the field winding 3 is mounted. 4 are wedges, which in 'usual design are made of steel or other suitable material and hold the winding. 5 are copper rods which are above of the wedges 4 are inserted and which are as wide as with regard to the strength of the Tooth heads 6 is at all possible. Because the wedges 4, the winding 3 against the effect of centrifugal force secure, the tooth tips 6 only need to have such a strength, that they can absorb the low centrifugal forces of the short-circuit rods 5. Consequently the tooth tips 6 can be made very narrow and the short-circuit rods 5 very wide so that they can get the necessary cross-section at a very low height. Of the The diameter of the field magnet is therefore increased insignificantly by the damper winding. The short-circuit rods 5 can in 'any way to a closed damper winding be united.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE311674C true DE311674C (en) |
Family
ID=564649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT311674D Active DE311674C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE311674C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0456498A3 (en) * | 1990-05-11 | 1992-02-05 | General Electric Company | Reducing harmonic losses in dynamoelectric machine rotors |
-
0
- DE DENDAT311674D patent/DE311674C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0456498A3 (en) * | 1990-05-11 | 1992-02-05 | General Electric Company | Reducing harmonic losses in dynamoelectric machine rotors |
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