CH149526A - Grid winding for AC machines. - Google Patents
Grid winding for AC machines.Info
- Publication number
- CH149526A CH149526A CH149526DA CH149526A CH 149526 A CH149526 A CH 149526A CH 149526D A CH149526D A CH 149526DA CH 149526 A CH149526 A CH 149526A
- Authority
- CH
- Switzerland
- Prior art keywords
- conductors
- machines
- winding
- end connections
- distances
- Prior art date
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
Description
Gitterwicklung für Wechselstrommasehinen. Bei Gitterwicklungen für Wechselstrom maschinen werden bekanntlich die einzelnen Leiter der Stirnverbindungen am ganzen Um fang gleichmässig verteilt, was zufolge der möglichst klein zu haltenden Wickelkopfaus ladung naturgemäss zu kleinen Distanzen zwischen den einzelnen Leitern führt. Dies ergibt an Stellen zwischen Leitern mit hohem Potential leicht Überbeanspruchungen der Iso lationen, welche ihrerseits zu Überschlägen Veranlassung geben. Zudem wird durch ver mehrte Isolation der Wärmedurchgang vom Leiter zur Kühlluft stark vermindert.
Um nun auch für hohe Spannungen Git terwicklungen anwenden zu können, werden erfindungsgemäss die einzelnen Leiter der Stirnverbindungen so am Umfang verteilt, dass zwischen Leitern ungleicher Phasen grössere und zwischen Leitern ein und der selben Phase kleinere Distanzen entstehen und damit auch an den Endverbindungen ähnliche Distanzverhältnisse sich ergeben.
Die Fig. 1 beiliegender, schematischen Zeichnung zeigt in Draufsicht eine beispiels- weise Anordnung der Wicklung gemäss Er findung; Fig. 2 zeigt Wicklungsstabenden der Fig. 1 in Seitenansicht.
An den Stellen a der gezeigten Wicklung sind zwischen Leitern ungleicher Phasen I, II oder III grössere, und an den Stellen b zwischen Leitern ein und derselben Phase kleinere Distanzen. Aus dieser Anordnung ergeben sich auch für die Endverbindungen f ähnliche Distanzen (c und d). Durch die an den Stellen a erzielten Abstände wird er möglicht, dass eine wirkungsvollere, kurz- schluss- und spannungssichere Abstützung der Wicklungsköpfe eingebaut werden kann als bei gleichmässiger Verteilung der Stirnver bindungen. Die Nutenteilung e bleibt wie bis anhin gleichmässig auf den Umfang verteilt.
Die Abstände zwischen den einzelnen Leitern könnten auch so verteilt sein, dass die Leiter ein und derselben Phase in zwei oder mehrere Gruppen zerlegt sind, um eben falls Distanzvergrösserungen zwischen Leitern einer Phase zu erwirken.
Grid winding for alternating current machines. In lattice windings for AC machines, the individual conductors of the end connections are known to be evenly distributed around the entire circumference, which naturally leads to small distances between the individual conductors due to the winding head charge, which must be kept as small as possible. At points between conductors with high potential, this easily results in overstressing of the insulation, which in turn gives rise to flashovers. In addition, increased insulation greatly reduces the heat transfer from the conductor to the cooling air.
In order to be able to use grid windings for high voltages, according to the invention, the individual conductors of the end connections are distributed around the circumference in such a way that greater distances arise between conductors of unequal phases and smaller distances between conductors of one and the same phase and thus similar distance relationships arise at the end connections surrender.
1 of the accompanying schematic drawing shows, in plan view, an example of an arrangement of the winding according to the invention; Fig. 2 shows the winding bar ends of Fig. 1 in side view.
At points a of the winding shown, there are greater distances between conductors of unequal phases I, II or III, and at points b between conductors of one and the same phase, smaller distances. This arrangement also results in similar distances (c and d) for the end connections f. The spacings achieved at points a make it possible for a more effective, short-circuit and voltage-proof support for the winding heads to be built in than with an even distribution of the end connections. As before, the groove pitch e remains evenly distributed over the circumference.
The distances between the individual conductors could also be distributed in such a way that the conductors of one and the same phase are divided into two or more groups in order to also increase the distance between the conductors of a phase.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH149526T | 1930-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH149526A true CH149526A (en) | 1931-09-15 |
Family
ID=4405140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH149526D CH149526A (en) | 1930-09-09 | 1930-09-09 | Grid winding for AC machines. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH149526A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0881747A3 (en) * | 1997-05-26 | 1999-01-20 | Denso Corporation | Alternator for vehicle |
-
1930
- 1930-09-09 CH CH149526D patent/CH149526A/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0881747A3 (en) * | 1997-05-26 | 1999-01-20 | Denso Corporation | Alternator for vehicle |
| US5936326A (en) * | 1997-05-26 | 1999-08-10 | Denso Corporation | Alternator for vehicle |
| US6051906A (en) * | 1997-05-26 | 2000-04-18 | Denso Corporation | Alternator for vehicle |
| US6181045B1 (en) | 1997-05-26 | 2001-01-30 | Denso Corporation | Alternator for vehicle |
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