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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
Application number
Other languages
German (de)
Inventor
Oerlikon Maschinenfabrik
Original Assignee
Oerlikon Maschf
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oerlikon Maschf filed Critical Oerlikon Maschf
Publication of CH149526A publication Critical patent/CH149526A/en

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12Windings 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)

PATENTANSPRUCH: Gitterwicklung für Wechselstrommaschi nen, gekennzeichnet durch eine derartige Ver teilung der Leiter für die Stirnverbindungen, dasszwischenLeitern ungleicherPhasen grössere und zwischen Leitern ein und derselben Phase kleinere Distanzen entstehen und damit auch an den Endverbindungen ähnliche Distanz verhältnisse sich ergeben. UNTERANSPRUCH: Gitterwicklung nach Patentanspruch, da durch gekennzeichnet, dass die Leiter ein und derselben Phase in mindestens zwei Gruppen zerlegt sind, um ebenfalls Distanzvergrösse rungen zwischen Leitern einer Phase zu er wirken. PATENT CLAIM: Lattice winding for AC machines, characterized by such a distribution of the conductors for the end connections that larger distances arise between conductors of unequal phases and smaller distances between conductors of one and the same phase and thus similar distance relationships result at the end connections. SUBCLAIM: Lattice winding according to claim, characterized in that the conductors of one and the same phase are divided into at least two groups in order to also increase the distance between conductors of a phase.
CH149526D 1930-09-09 1930-09-09 Grid winding for AC machines. CH149526A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0881747A3 (en) * 1997-05-26 1999-01-20 Denso Corporation Alternator for vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
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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