CH357797A - Stator winding for electrical machines - Google Patents

Stator winding for electrical machines

Info

Publication number
CH357797A
CH357797A CH357797DA CH357797A CH 357797 A CH357797 A CH 357797A CH 357797D A CH357797D A CH 357797DA CH 357797 A CH357797 A CH 357797A
Authority
CH
Switzerland
Prior art keywords
stator winding
conductors
order
cooling channels
winding according
Prior art date
Application number
Other languages
German (de)
Inventor
Adolf Dipl Ing Schnetzler
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 CH357797A publication Critical patent/CH357797A/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
    • H02K3/24Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Description

  

      Statorwicklung    für elektrische Maschinen    Um die Zusatzverluste einer     Statorwicklung    ge  ring zu halten, ist es bekannt, Kunststäbe zu verwen  den. Die Kühlung kann hierbei in der Weise     erfolgen,     dass innerhalb der Nut diese Stäbe voneinander distan  ziert und im Zwischenraum Rohre angeordnet wer  den, durch die das Kühlmedium strömt. Da zwischen  dem Kühlkanal und dem Wicklungskupfer jedoch  eine verhältnismässig dicke Isolation besteht, sind die  Kühlverhältnisse nicht besonders günstig. Es wurde  deshalb auch schon vorgeschlagen, Hohlleiter zu ver  wenden, die aber grössere Zusatzverluste und eine  schwierige, teure     Herstellungsart    bedingen.  



  Bei der     erfindungsgemässen        Statorwicklung    sind  zwischen radial übereinander angeordneten Leitern  Kühlkanäle vorgesehen, und die Wicklung besteht  aus nach jeder Nut zyklisch     vertauschten        Leitern     erster Ordnung, welche innerhalb der Nut ver  schränkte Teilleiter zweiter Ordnung aufweisen. Der       Erfindungsgegenstand,    der eine Kombination an sich  bekannter Einzelmerkmale darstellt, ermöglicht eine  sehr intensive Wicklungskühlung, ohne dass eine Er  höhung der Zusatzverluste in Kauf genommen wer  den muss.  



  Die Zeichnung gibt Ausführungsbeispiele des Er  findungsgegenstandes vereinfacht wieder.  



  In     Fig.    1 werden mit 1 die Leiter erster Ordnung  bezeichnet, die ausserdem durch Kreuze kenntlich ge  macht sind. Diese Leiter von quadratischem oder an  genähert quadratischem Querschnitt werden nach  jeder Nut (hinsichtlich ihrer Lage innerhalb der Nut)  zyklisch miteinander vertauscht und bestehen aus  einer Anzahl von Teilleitern zweiter Ordnung 1', wel  che in der Nut ein oder mehrere Male um 180  ver  dreht sind. Die Kanäle 2 zwischen den Leitern erster  Ordnung werden mit Hilfe von Distanzstücken 3 ge  bildet, die beispielsweise druckfeste Isolierleisten sein  können.

   In diesem Falle ist eine unmittelbare Berüh-         rung    zwischen dem Leiterkupfer und dem     Kühlmittel     möglich, da man den obersten und untersten Teil  leiter 1' eines jeden Leiters erster Ordnung nicht zu  isolieren braucht.  



  In den     Fig.    2 und 3, in denen gleiche Teile mit  gleichen Bezugszeichen versehen sind wie in     Fig.    1,  werden die     Kühlkanäle    2 durch Metallrohre 4, 4' ge  bildet, die sich speziell für Wasserkühlung eignen und  gegenüber den Leitern isoliert     sind.     



       Fig.    4     zeigt    eine Ausführungsform, bei welcher die  Kühlkanäle innerhalb der Leiter erster Ordnung vor  gesehen sind. Man erkennt, dass bei diesem Wick  lungsaufbau die     Anzahl    der     Kühlkanäle    verringert  werden kann, da gemäss     Fig.    1 bis 3 zu drei Leitern  erster Ordnung mindestens vier Kanäle gehören, wäh  rend nach     Fig.    4 die gleiche Anzahl von Kanälen  erst bei vier Leitern vorhanden ist.  



  Bei der beschriebenen Wicklung ist es     vorteilhaft,     die Teilleiter ausserhalb der Nut in an sich     bekannter     Weise um 90  zu verdrehen, um dadurch eine Kom  pensation der     Stirnverbindungs-EMKe    zu erreichen  und die Zusatzverluste auch in den Wickelköpfen so  klein wie möglich zu halten (schweizerische Patent  schrift Nr. 144959).



      Stator winding for electrical machines In order to keep the additional losses of a stator winding ge ring, it is known to use synthetic rods. The cooling can take place here in such a way that these rods are spaced apart from one another within the groove and tubes are arranged in the space through which the cooling medium flows. However, since there is relatively thick insulation between the cooling channel and the winding copper, the cooling conditions are not particularly favorable. It has therefore already been proposed to use waveguides, but they cause greater additional losses and a difficult, expensive method of manufacture.



  In the case of the stator winding according to the invention, cooling channels are provided between conductors arranged radially one above the other, and the winding consists of first-order conductors which are cyclically interchanged after each slot and which have second-order partial conductors crossed within the slot. The subject of the invention, which is a combination of known individual features, enables very intensive winding cooling without an increase in additional losses having to be accepted.



  The drawing shows embodiments of the subject invention He simplified again.



  In Fig. 1, 1 denotes the first-order ladder, which is also made recognizable by crosses ge. These conductors of square or approximately square cross-section are cyclically interchanged after each groove (with regard to their position within the groove) and consist of a number of sub-conductors of the second order 1 ', which are rotated one or more times by 180 in the groove . The channels 2 between the first-order conductors are ge forms with the help of spacers 3, which can be pressure-resistant insulating strips, for example.

   In this case, direct contact between the copper conductor and the coolant is possible, since the top and bottom part of conductor 1 'of each first-order conductor does not need to be insulated.



  In Figs. 2 and 3, in which the same parts are provided with the same reference numerals as in Fig. 1, the cooling channels 2 are formed by metal pipes 4, 4 'ge, which are especially suitable for water cooling and are insulated from the conductors.



       Fig. 4 shows an embodiment in which the cooling channels are seen within the first order conductor. It can be seen that with this winding structure, the number of cooling channels can be reduced since, according to FIGS. 1 to 3, at least four channels belong to three first-order conductors, while according to FIG. 4 the same number of channels is only present with four conductors .



  With the winding described, it is advantageous to twist the sub-conductors outside the slot in a known manner by 90 in order to compensate for the end connection EMFs and to keep the additional losses as small as possible in the winding heads (Swiss patent document No. 144959).

 

Claims (1)

PATENTANSPRUCH Statorwicklung für elektrische Maschinen, bei der zwischen radial übereinander angeordneten Leitern Kühlkanäle vorgesehen sind und die aus nach jeder Nut zyklisch vertauschten Leitern erster Ordnung besteht, welche innerhalb der Nut verschränkte Teilleiter zwei ter Ordnung aufweisen. UNTERANSPRüCHE 1. Statorwicklung nach Patentanspruch, dadurch gekennzeichnet, dass die Kühlkanäle zwischen den Leitern erster Ordnung mit Hilfe von Distanzstücken gebildet sind. PATENT CLAIM Stator winding for electrical machines in which cooling channels are provided between conductors arranged radially one above the other and which consists of first-order conductors which are cyclically interchanged after each slot and which have subconductors of the second order interlaced within the slot. SUBClaims 1. Stator winding according to claim, characterized in that the cooling channels are formed between the conductors of the first order with the aid of spacers. 2. Statorwicklung nach Patentanspruch, dadurch gekennzeichnet, dass die Kühlkanäle unter Zuhilfe- nahme druckfester Isolierleisten ausgebildet sind. 3. Statorwicklung nach Patentanspruch, dadurch gekennzeichnet, dass zwischen den Leitern Metall rohre angeordnet sind, durch welche das Kühlmittel fliesst. 4. Statorwicklung nach Patentanspruch, dadurch gekennzeichnet, dass die Kühlkanäle innerhalb der Leiter erster Ordnung vorgesehen sind. 2. Stator winding according to claim, characterized in that the cooling channels are formed with the aid of pressure-resistant insulating strips. 3. Stator winding according to claim, characterized in that metal pipes are arranged between the conductors, through which the coolant flows. 4. stator winding according to claim, characterized in that the cooling channels are provided within the first order conductor. 5. Statorwicklung nach Patentanspruch, dadurch gekennzeichnet, dass die Teilleiter ausserhalb der Nut zur Kompensation der Stirnverbindungs-EMKe ver dreht sind. 5. Stator winding according to claim, characterized in that the sub-conductors are rotated outside the groove to compensate for the end connection EMFs.
CH357797D 1958-03-01 1958-03-01 Stator winding for electrical machines CH357797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH357797T 1958-03-01

Publications (1)

Publication Number Publication Date
CH357797A true CH357797A (en) 1961-10-31

Family

ID=4511689

Family Applications (1)

Application Number Title Priority Date Filing Date
CH357797D CH357797A (en) 1958-03-01 1958-03-01 Stator winding for electrical machines

Country Status (1)

Country Link
CH (1) CH357797A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10244202A1 (en) * 2002-09-23 2004-03-25 Alstom (Switzerland) Ltd. Electrical machine with stator with cooled winding rods, has distancing arrangement for winding rods consisting of axial tubular distance elements whose internal volumes form cooling medium channels
WO2016023710A1 (en) * 2014-08-14 2016-02-18 Wobben Properties Gmbh Synchronous generator, in particular four-pole synchronous ring generator of a gearless wind turbine, and wind turbine having said synchronous generator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10244202A1 (en) * 2002-09-23 2004-03-25 Alstom (Switzerland) Ltd. Electrical machine with stator with cooled winding rods, has distancing arrangement for winding rods consisting of axial tubular distance elements whose internal volumes form cooling medium channels
WO2016023710A1 (en) * 2014-08-14 2016-02-18 Wobben Properties Gmbh Synchronous generator, in particular four-pole synchronous ring generator of a gearless wind turbine, and wind turbine having said synchronous generator
DE102014216148A1 (en) * 2014-08-14 2016-02-18 Wobben Properties Gmbh Synchronous generator, in particular multi-pole synchronous ring generator of a gearless wind turbine, and wind turbine with selbigem
DE102014216148A8 (en) * 2014-08-14 2016-12-22 Wobben Properties Gmbh Synchronous generator, in particular multi-pole synchronous ring generator of a gearless wind turbine, and wind turbine with selbigem
CN106663977A (en) * 2014-08-14 2017-05-10 乌本产权有限公司 Synchronous generator, in particular four-pole synchronous ring generator of a gearless wind turbine, and wind turbine having said synchronous generator
US10236737B2 (en) 2014-08-14 2019-03-19 Wobben Properties Gmbh Synchronous generator, in particular multipole synchronous annular generator of a direct-drive wind turbine, and wind turbine having the same
CN106663977B (en) * 2014-08-14 2019-09-03 乌本产权有限公司 The synchronous ring generator of the synchronous generator of the wind energy plant of no transmission device, especially multipole and the wind energy plant with it

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