EP2387047A1 - Electrical conductor and method for producing an electrical coil - Google Patents

Electrical conductor and method for producing an electrical coil Download PDF

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Publication number
EP2387047A1
EP2387047A1 EP10305507A EP10305507A EP2387047A1 EP 2387047 A1 EP2387047 A1 EP 2387047A1 EP 10305507 A EP10305507 A EP 10305507A EP 10305507 A EP10305507 A EP 10305507A EP 2387047 A1 EP2387047 A1 EP 2387047A1
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EP
European Patent Office
Prior art keywords
winding
conductor
electrical
stack
producing
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.)
Granted
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EP10305507A
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German (de)
French (fr)
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EP2387047B1 (en
Inventor
Siegbert Tillner
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Essex Europe SAS
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Essex Europe SAS
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Publication date
Priority to PL10305507T priority Critical patent/PL2387047T3/en
Application filed by Essex Europe SAS filed Critical Essex Europe SAS
Priority to ES10305507T priority patent/ES2389170T3/en
Priority to EP10305507A priority patent/EP2387047B1/en
Priority to MX2012013142A priority patent/MX2012013142A/en
Priority to US13/696,708 priority patent/US9111668B2/en
Priority to BR112012028870A priority patent/BR112012028870A2/en
Priority to KR1020127032530A priority patent/KR101879755B1/en
Priority to RU2012153561/07A priority patent/RU2556086C2/en
Priority to PCT/EP2011/054416 priority patent/WO2011141213A1/en
Priority to CN201180023247.XA priority patent/CN102985984B/en
Publication of EP2387047A1 publication Critical patent/EP2387047A1/en
Application granted granted Critical
Publication of EP2387047B1 publication Critical patent/EP2387047B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
    • H01F41/066—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation
    • H01F41/068—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation in the form of strip material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/071—Winding coils of special form
    • H01F41/074—Winding flat coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing

Definitions

  • the invention relates to a method for producing an electrical winding for an electrical device in which the winding is embedded in a liquid serving for cooling, with which first a conductor is made, in which a plurality of insulated electrical conductors having a rectangular cross section with their flat sides abutting one another in at least one stack, around which the wrapping material consisting of insulating material is wound, and with which the conductor is subsequently formed into a one-part winding, and onto an electrical conductor ( DE 197 27 758 A1 ).
  • a conductor which can be used for such a winding is, for example, a twisted conductor which is used in windings for transformers in which oil is contained as coolant.
  • Such a twisting ladder consists of two stacks of flat, insulated individual electrical conductors, which are twisted in their course by constant exchange of space from one stack to the other.
  • To be such a conductor according to the above-mentioned DE 197 27 758 A1 several layers of paper wrapped as insulation. Between the turns of a winding made of such a conductor, a gap for the passage of the coolant, which is adjusted by spacers remains.
  • the invention has the object of developing the initially described method so that a sufficient cooling of a coil produced with the corresponding conductor is ensured in the long term.
  • the wrapping material used in this method can be designed, for example, as a band or fabric or cord. It consists of a plastic with impressed shape memory, which is stretched in the way of prefabrication and held in the extended state by cooling or "frozen" is. Such a single-layer or multi-layered winding material is returned to its original length when heat is applied thanks to its shape memory. It will be shorter then.
  • a lengthened according to the invention winding material can be wrapped in a conventional technique to the stack of individual conductors, so the conductor, so that it surrounds the same sufficiently strong.
  • the wrapping with the wrapping material corresponds in strength about the usual wrapping with other materials, so that the conductor has sufficient flexibility for its further processing.
  • the conductor thus wound can therefore also be processed in conventional technology into a winding whose windings are separated by a gap. After completion of the winding, the same is heated to a predetermined minimum temperature. For this purpose, it can be introduced into a drying oven, for example, for expelling residual moisture and for baking lacquer, if such is applied to the individual conductors as insulation and for solidification. By taking place in this heat, the wrapping material is in the direction of its original length, to which it wants to go back, shorter, so that it lays with increased force to the conductor. The set between the turns of the winding gap is thus maintained in the long term in its entire clear width, so that the cooling of the winding is constantly ensured during their operation.
  • Plastics with impressed shape memory for example, from the EP 2 103 637 A2 out. These are essentially polymers and / or oligomers with a wide variety of base materials.
  • band is used in the following for the sake of simplicity.
  • the conductor according to the invention consists in the simplest embodiment of a stack of flat, insulated electrical conductors with approximately rectangular cross-section, which lie with their flat sides together.
  • the conductor is a twisted conductor with two adjacent stacks of individual conductors, as it is in Fig. 1 is shown.
  • the individual conductors can for example be insulated with a so-called baked enamel, which is activated when heat is applied and causes the individual conductors in the respective stack to cake.
  • the in Fig. 1 shown Drilleiter 1 - hereinafter called "conductor 1" - consists of two adjacent stacks of flat, insulated electrical conductors 2 with approximately rectangular cross-section, which lie with their flat sides on each other.
  • the individual conductors 2 are preferably made of copper. They are insulated with an insulating varnish, in particular a baked enamel.
  • a constantly repeating change of the individual conductors 2 is made from one stack to the other over its entire length.
  • the individual conductors 2 by means of a suitable tool on Fig. 1 resulting points 3 cranked, in each case an overhead and a lower lying individual conductor. This happens continuously.
  • Regular change of the individual conductors 2 in the cross section of the conductor 1 also leads to lower eddy current losses.
  • a tape 4 wound as insulation which consists of a plastic with impressed shape memory. It is wrapped around the conductor 1 with an ordinary strength in an extended state, in which it is brought by stretching and “freezing". It may be wrapped around the conductor in an overlapping or impact manner, but also with gaps between the individual turns.
  • the conductor 1 is continuously manufactured in a large length, quasi "endless”. It can be wound onto a coil or directly to a winding for an electrical device, in particular a transformer, further processed. For such further processing, the conductor 1 may optionally be transported with the coil to another production site and there again unwound from the spool.
  • an electrical winding W For the production of an electrical winding W, the conductor 1 according to Fig. 2 wound on a mechanically stable core 5 with a predetermined diameter, with a gap or a gap between its turns, which can be adjusted by the attachment of spacers.
  • the finished winding W is heated to a predetermined temperature before use in an electrical device, in which the band 4 shrinks in its longitudinal direction or becomes shorter and lays around the conductor 1 with increased strength.
  • the winding W can be introduced, for example, in a drying oven 6, in which it is heated, for example, to expel residual moisture and / or to activate a mounted on the individual conductors 2 baking enamel.

Abstract

The method involves embedding a winding in a fluid to produce a conductor (1) i.e. three-core cord, where the fluid cools the winding. Insulated individual electrical conductors (2) with rectangular cross-section are arranged in a stack and are made of copper, and the conductor is wound with a strip- and/or strand-shaped winding material e.g. band (4), cord and netting, for producing common insulation, where the winding material is formed from plastic with embossed shape memory. The produced winding is heated at temperature during which the winding material is shorter in a winding direction. An independent claim is also included for an electrical conductor for producing an electrical winding for an electrical device.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung einer elektrischen Wicklung für ein elektrisches Gerät, in welchem die Wicklung in eine der Kühlung dienende Flüssigkeit eingebettet ist, mit welchem zunächst ein Leiter hergestellt wird, in dem eine Vielzahl von isolierten elektrischen Einzelleitern mit rechteckigem Querschnitt mit ihren Flachseiten aneinander liegend in mindestens einem Stapel angeordnet wird, um den zur Erzeugung einer gemeinsamen Isolierung aus Isoliermaterial bestehendes Wickelmaterial herumgewickelt wird, und mit welchem anschließend der Leiter zu einer einteiligen Wicklung geformt wird sowie auf einen elektrischen Leiter ( DE 197 27 758 A1 ).The invention relates to a method for producing an electrical winding for an electrical device in which the winding is embedded in a liquid serving for cooling, with which first a conductor is made, in which a plurality of insulated electrical conductors having a rectangular cross section with their flat sides abutting one another in at least one stack, around which the wrapping material consisting of insulating material is wound, and with which the conductor is subsequently formed into a one-part winding, and onto an electrical conductor ( DE 197 27 758 A1 ).

Ein für eine derartige Wicklung einsetzbarer Leiter ist beispielsweise ein Drilleiter, der in Wicklungen für Transformatoren verwendet wird, in welchen Öl als Kühlmittel enthalten ist. Ein solcher Drilleiter besteht aus zwei Stapeln von flachen, isolierten elektrischen Einzelleitern, die in ihrem Verlauf durch ständigen Platztausch von einem Stapel in den anderen verdrillt sind. Um einen solchen Leiter werden entsprechend der eingangs erwähnten DE 197 27 758 A1 mehrere Lagen aus Papier als Isolierung herumgewickelt. Zwischen den Windungen einer aus einem solchen Leiter hergestellten Wicklung verbleibt ein Spalt zum Durchtritt des Kühlmittels, der durch Abstandshalter eingestellt wird. Beim Herstellen der Wicklung und auch beim Betrieb derselben kann es geschehen, daß die Papierlagen sich lockern und aufbauschen, so daß der Spalt zwischen den Windungen zumindest teilweise zugesetzt wird. Die Kühlung der Wicklung wird dadurch wesentlich verschlechtert.A conductor which can be used for such a winding is, for example, a twisted conductor which is used in windings for transformers in which oil is contained as coolant. Such a twisting ladder consists of two stacks of flat, insulated individual electrical conductors, which are twisted in their course by constant exchange of space from one stack to the other. To be such a conductor according to the above-mentioned DE 197 27 758 A1 several layers of paper wrapped as insulation. Between the turns of a winding made of such a conductor, a gap for the passage of the coolant, which is adjusted by spacers remains. When making the winding and also during the operation of the same, it may happen that the paper layers loosen and bulge, so that the gap between the turns is at least partially added. The cooling of the winding is thereby significantly deteriorated.

Der Erfindung liegt die Aufgabe zugrunde, das eingangs geschilderte Verfahren so weiterzubilden, daß eine ausreichende Kühlung einer mit dem entsprechenden Leiter hergestellten Wicklung auf Dauer gewährleistet ist.The invention has the object of developing the initially described method so that a sufficient cooling of a coil produced with the corresponding conductor is ensured in the long term.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst,

  • daß der Leiter mit einem band- bzw. strangförmigen Wickelmaterial aus einem Kunststoff mit eingeprägtem Formgedächtnis umgewickelt wird, das eine durch Strecken erzeugte, gegenüber seiner Ursprungslänge größere Länge hat und bei Wärmezufuhr kürzer wird, und
  • daß die fertige Wicklung auf eine Temperatur erwärmt wird, bei welcher das Wickelmaterial in Wickelrichtung kürzer wird.
This object is achieved according to the invention characterized
  • that the conductor is wrapped with a ribbon-shaped winding material made of a plastic with impressed shape memory, which has a generated by stretching, compared to its original length greater length and is shorter when heat is applied, and
  • that the finished winding is heated to a temperature at which the winding material is shorter in the winding direction.

Das bei diesem Verfahren eingesetzte Wickelmaterial kann beispielsweise als Band oder Gewebe oder Schnur ausgeführt sein. Es besteht aus einem Kunststoff mit eingeprägtem Formgedächtnis, das im Wege der Vorfertigung gedehnt und in dem dadurch verlängerten Zustand durch Abkühlung gehalten bzw. "eingefroren" ist. Ein solches einlagig oder mehrlagig ausgeführtes Wickelmaterial geht bei Wärmezufuhr dank seines Formgedächtnisses auf seine ursprüngliche Länge zurück. Es wird dann also kürzer. Ein entsprechend der Erfindung verlängertes Wickelmaterial kann in herkömmlicher Technik um den Stapel aus Einzelleitern, also den Leiter, herumgewickelt werden, so daß es denselben ausreichend fest umgibt. Die Umwicklung mit dem Wickelmaterial entspricht in der Festigkeit etwa der üblichen Umwicklung mit anderen Materialien, so daß der Leiter eine für seine Weiterverarbeitung ausreichende Biegbarkeit hat. Der so umwickelte Leiter kann daher ebenfalls in herkömmlicher Technik zu einer Wicklung verarbeitet werden, deren Windungen durch einen Spalt getrennt sind. Nach Fertigstellung der Wicklung wird dieselbe auf eine vorgegebene Mindesttemperatur erwärmt. Dazu kann sie beispielsweise zum Austreiben von Restfeuchtigkeit und zum Verbacken von Lack, wenn ein solcher als Isolierung und zur Verfestigung auf die Einzelleiter aufgetragen ist, in einen Trockenofen eingebracht werden. Durch die dabei stattfindende Wärmezufuhr wird das Wickelmaterial in Richtung seiner ursprünglichen Länge, auf die es zurückgehen will, kürzer, so daß es sich mit erhöhter Kraft um den Leiter legt. Der zwischen den Windungen der Wicklung eingestellte Spalt bleibt dadurch auf Dauer in seiner ganzen lichten Weite erhalten, so daß die Kühlung der Wicklung während ihres Betriebs ständig sichergestellt ist.The wrapping material used in this method can be designed, for example, as a band or fabric or cord. It consists of a plastic with impressed shape memory, which is stretched in the way of prefabrication and held in the extended state by cooling or "frozen" is. Such a single-layer or multi-layered winding material is returned to its original length when heat is applied thanks to its shape memory. It will be shorter then. A lengthened according to the invention winding material can be wrapped in a conventional technique to the stack of individual conductors, so the conductor, so that it surrounds the same sufficiently strong. The wrapping with the wrapping material corresponds in strength about the usual wrapping with other materials, so that the conductor has sufficient flexibility for its further processing. The conductor thus wound can therefore also be processed in conventional technology into a winding whose windings are separated by a gap. After completion of the winding, the same is heated to a predetermined minimum temperature. For this purpose, it can be introduced into a drying oven, for example, for expelling residual moisture and for baking lacquer, if such is applied to the individual conductors as insulation and for solidification. By taking place in this heat, the wrapping material is in the direction of its original length, to which it wants to go back, shorter, so that it lays with increased force to the conductor. The set between the turns of the winding gap is thus maintained in the long term in its entire clear width, so that the cooling of the winding is constantly ensured during their operation.

Kunststoffe mit eingeprägtem Formgedächtnis im Sinne der Erfindung gehen beispielsweise aus der EP 2 103 637 A2 hervor. Es handelt sich dabei im wesentlichen um Polymere und/oder Oligomere mit unterschiedlichsten Basismaterialien.Plastics with impressed shape memory according to the invention, for example, from the EP 2 103 637 A2 out. These are essentially polymers and / or oligomers with a wide variety of base materials.

Das Verfahren nach der Erfindung und ein damit hergestellter Leiter werden anhand der Zeichnungen als Ausführungsbeispiel erläutert.The method of the invention and a conductor made therewith will be explained with reference to the drawings as an exemplary embodiment.

Es zeigen:

  • Fig. 1 einen Abschnitt eines Leiters nach der Erfindung.
  • Fig. 2 schematisch eine Anordnung zur Durchführung des Verfahrens nach der Erfindung.
Show it:
  • Fig. 1 a section of a conductor according to the invention.
  • Fig. 2 schematically an arrangement for carrying out the method according to the invention.

Statt des Wortes "Wickelmaterial" wird im folgenden der Einfachheit halber das Wort "Band" verwendet.Instead of the word "wrapping material", the term "band" is used in the following for the sake of simplicity.

Der Leiter nach der Erfindung besteht in einfachster Ausführungsform aus einem Stapel von flachen, isolierten elektrischen Einzelleitern mit etwa rechteckigem Querschnitt, die mit ihren Flachseiten aneinander liegen. In bevorzugter Ausführungsform ist der Leiter ein Drilleiter mit zwei nebeneinander liegenden Stapeln von Einzelleitern, so wie er in Fig. 1 dargestellt ist. Die Einzelleiter können beispielsweise mit einem sogenannten Backlack isoliert sein, der bei Wärmezufuhr aktiviert wird und ein Verbacken der Einzelleiter im jeweiligen Stapel bewirkt.The conductor according to the invention consists in the simplest embodiment of a stack of flat, insulated electrical conductors with approximately rectangular cross-section, which lie with their flat sides together. In a preferred embodiment, the conductor is a twisted conductor with two adjacent stacks of individual conductors, as it is in Fig. 1 is shown. The individual conductors can for example be insulated with a so-called baked enamel, which is activated when heat is applied and causes the individual conductors in the respective stack to cake.

Der in Fig. 1 dargestellte Drilleiter 1 - im folgenden weiter kurz "Leiter 1" genannt - besteht aus zwei nebeneinander liegenden Stapeln von flachen, isolierten elektrischen Einzelleitern 2 mit etwa rechteckigem Querschnitt, die mit ihren Flachseiten aufeinander liegen. Die Einzelleiter 2 bestehen vorzugsweise aus Kupfer. Sie sind mit einem Isolierlack isoliert, insbesondere einem Backlack. Um beim Einsatz des Leiters 1 in einer Wicklung den Einfluß der Stromverdrängung möglichst gering zu halten, wird auf der ganzen Länge desselben ein sich ständig wiederholender Wechsel der Einzelleiter 2 von einem Stapel zum anderen vorgenommen. Zu diesem Zweck werden die Einzelleiter 2 mittels eines geeigneten Werkzeugs an aus Fig. 1 hervorgehenden Stellen 3 gekröpft, und zwar jeweils ein oben liegender und ein unten liegender Einzelleiter. Das geschieht kontinuierlich. Der damit durchgeführte regelmäßige Wechsel der Einzelleiter 2 im Querschnitt des Leiters 1 führt auch zu geringeren Wirbelstromverlusten.The in Fig. 1 shown Drilleiter 1 - hereinafter called "conductor 1" - consists of two adjacent stacks of flat, insulated electrical conductors 2 with approximately rectangular cross-section, which lie with their flat sides on each other. The individual conductors 2 are preferably made of copper. They are insulated with an insulating varnish, in particular a baked enamel. In order to keep the influence of the current displacement as small as possible when using the conductor 1 in a winding, a constantly repeating change of the individual conductors 2 is made from one stack to the other over its entire length. For this purpose, the individual conductors 2 by means of a suitable tool on Fig. 1 resulting points 3 cranked, in each case an overhead and a lower lying individual conductor. This happens continuously. The carried out with it Regular change of the individual conductors 2 in the cross section of the conductor 1 also leads to lower eddy current losses.

Um den Leiter 1 ist als Isolierung ein Band 4 herumgewickelt, das aus einem Kunststoff mit eingeprägtem Formgedächtnis besteht. Es wird in verlängertem Zustand, in welchen es durch Dehnung und "Einfrieren" gebracht ist, mit üblicher Festigkeit um den Leiter 1 herumgewickelt. Dabei kann es überlappend oder auf Stoß um den Leiter herumgewickelt sein, aber auch mit Lücken zwischen den einzelnen Windungen.To the conductor 1 is a tape 4 wound as insulation, which consists of a plastic with impressed shape memory. It is wrapped around the conductor 1 with an ordinary strength in an extended state, in which it is brought by stretching and "freezing". It may be wrapped around the conductor in an overlapping or impact manner, but also with gaps between the individual turns.

Der Leiter 1 wird kontinuierlich in großer Länge, quasi "endlos" gefertigt. Er kann dabei auf eine Spule aufgewickelt oder auch direkt zu einer Wicklung für ein elektrisches Gerät, insbesondere einen Transformator, weiterverarbeitet werden. Für eine solche Weiterverarbeitung kann der Leiter 1 gegebenenfalls mit der Spule zu einer anderen Fertigungsstätte transportiert und dort wieder von der Spule abgewickelt werden.The conductor 1 is continuously manufactured in a large length, quasi "endless". It can be wound onto a coil or directly to a winding for an electrical device, in particular a transformer, further processed. For such further processing, the conductor 1 may optionally be transported with the coil to another production site and there again unwound from the spool.

Zur Herstellung einer elektrischen Wicklung W wird der Leiter 1 gemäß Fig. 2 auf einen mechanisch stabilen Kern 5 mit vorgegebenem Durchmesser aufgewickelt, und zwar mit einer Lücke bzw. einem Spalt zwischen seinen Windungen, die bzw. der durch Anbringung von Abstandshaltern eingestellt werden kann. Die fertige Wicklung W wird vor ihrem Einsatz in einem elektrischen Gerät auf eine vorgegebene Temperatur erwärmt, bei welcher das Band 4 in seiner Längsrichtung schrumpft bzw. kürzer wird und sich mit erhöhter Festigkeit um den Leiter 1 legt. Dazu kann die Wicklung W beispielsweise in einen Trockenofen 6 eingebracht werden, in welchem sie beispielsweise zum Austreiben von Restfeuchtigkeit und/oder zur Aktivierung eines auf den Einzelleitern 2 angebrachten Backlacks erwärmt wird.For the production of an electrical winding W, the conductor 1 according to Fig. 2 wound on a mechanically stable core 5 with a predetermined diameter, with a gap or a gap between its turns, which can be adjusted by the attachment of spacers. The finished winding W is heated to a predetermined temperature before use in an electrical device, in which the band 4 shrinks in its longitudinal direction or becomes shorter and lays around the conductor 1 with increased strength. For this purpose, the winding W can be introduced, for example, in a drying oven 6, in which it is heated, for example, to expel residual moisture and / or to activate a mounted on the individual conductors 2 baking enamel.

Claims (3)

Verfahren zur Herstellung einer elektrischen Wicklung für ein elektrisches Gerät, in welchem die Wicklung in eine der Kühlung dienende Flüssigkeit eingebettet ist, mit welchem zunächst ein Leiter hergestellt wird, in dem eine Vielzahl von isolierten elektrischen Einzelleitern mit rechteckigem Querschnitt mit ihren Flachseiten aneinander liegend in mindestens einem Stapel angeordnet wird, um den zur Erzeugung einer gemeinsamen Isolierung aus Isoliermaterial bestehendes Wickelmaterial herumgewickelt wird, und mit welchem anschließend der Leiter zu einer einteiligen Wicklung geformt wird, dadurch gekennzeichnet, - daß der Leiter (1) mit einem band- bzw. strangförmigen Wickelmaterial aus einem Kunststoff mit eingeprägtem Formgedächtnis umgewickelt wird, das eine durch Strecken erzeugte, gegenüber seiner Ursprungslänge größere Länge hat und bei Wärmezufuhr kürzer wird, und - daß die fertige Wicklung (W) auf eine Temperatur erwärmt wird, bei welcher das Wickelmaterial in Wickelrichtung kürzer wird. A process for producing an electric winding for an electrical appliance, in which the winding is embedded in a liquid serving for cooling, with which first a conductor is produced, in which a plurality of insulated electrical conductors with rectangular cross-section with their flat sides contiguous in at least a stack is placed around which the wrapping material for forming a common insulation of insulating material is wound, and with which subsequently the conductor is formed into a one-part winding, characterized - That the conductor (1) is wrapped with a ribbon or strand-like wrapping material made of a plastic with embossed shape memory, which has a length produced by stretching, compared to its original length has greater length and becomes shorter when heat, and - That the finished winding (W) is heated to a temperature at which the winding material is shorter in the winding direction. Elektrischer Leiter zur Herstellung einer Wicklung für ein elektrisches Gerät, in welchem die Wicklung in eine der Kühlung dienende Flüssigkeit eingebettet ist, welcher aus einer Vielzahl von isolierten elektrischen Einzelleitern mit rechteckigem Querschnitt besteht, die mit ihren Flachseiten aneinander liegend in mindestens einem Stapel angeordnet und von einer gemeinsamen Isolierung umgeben sind, welche aus einem um den Stapel herumgewickelten Wickelmaterial aus Isoliermaterial besteht, dadurch gekennzeichnet, daß das Wickelmaterial aus einem Kunststoff mit eingeprägtem Formgedächtnis besteht, das beim Umwickeln des Stapels aus Einzelleitern (2) eine durch Strecken erzeugte, gegenüber seiner Ursprungslänge größere Länge hat und bei Wärmezufuhr in Wickelrichtung kürzer wird.Electrical conductor for producing a winding for an electrical appliance, in which the winding is embedded in a liquid serving for cooling, which consists of a plurality of insulated electrical conductors with a rectangular cross section, which lie with their flat sides contiguous in at least one stack and of surrounded by a common insulation, which consists of a wound around the stack wrapping material of insulating material, characterized in that the wrapping material consists of a plastic with impressed shape memory, which when wrapping the stack of individual conductors (2) generated by stretching, compared to its original length has greater length and shorter in heat supply in the winding direction. Leiter nach Anspruch 2, dadurch gekennzeichnet, daß er als Drilleiter mit zwei nebeneinander liegenden Stapeln von Einzelleitern (2) ausgeführt ist.Ladder according to Claim 2, characterized in that it is designed as a twisted ladder with two adjacent stacks of individual conductors (2).
EP10305507A 2010-05-12 2010-05-12 Electrical conductor and method for producing an electrical coil Active EP2387047B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
ES10305507T ES2389170T3 (en) 2010-05-12 2010-05-12 Procedure for the manufacture of an electric winding and electric conductor
EP10305507A EP2387047B1 (en) 2010-05-12 2010-05-12 Electrical conductor and method for producing an electrical coil
PL10305507T PL2387047T3 (en) 2010-05-12 2010-05-12 Electrical conductor and method for producing an electrical coil
US13/696,708 US9111668B2 (en) 2010-05-12 2011-03-23 Method for production of an electrical winding, and electrical conductor
BR112012028870A BR112012028870A2 (en) 2010-05-12 2011-03-23 process to produce an electrical winding and an electrical conductor
KR1020127032530A KR101879755B1 (en) 2010-05-12 2011-03-23 Method for production of an electrical winding, and electrical conductor
MX2012013142A MX2012013142A (en) 2010-05-12 2011-03-23 Method for production of an electrical winding, and electrical conductor.
RU2012153561/07A RU2556086C2 (en) 2010-05-12 2011-03-23 Method and device for manufacture of current winding and electric conductor
PCT/EP2011/054416 WO2011141213A1 (en) 2010-05-12 2011-03-23 Method for production of an electrical winding, and electrical conductor
CN201180023247.XA CN102985984B (en) 2010-05-12 2011-03-23 Manufacture method and the electric conductor of electricity winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10305507A EP2387047B1 (en) 2010-05-12 2010-05-12 Electrical conductor and method for producing an electrical coil

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EP2387047A1 true EP2387047A1 (en) 2011-11-16
EP2387047B1 EP2387047B1 (en) 2012-06-06

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KR (1) KR101879755B1 (en)
CN (1) CN102985984B (en)
BR (1) BR112012028870A2 (en)
ES (1) ES2389170T3 (en)
MX (1) MX2012013142A (en)
PL (1) PL2387047T3 (en)
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US20170033631A1 (en) * 2015-07-29 2017-02-02 Siemens Energy, Inc. Method for roebel transposition of form wound conductors of electrical machines such as generators and motors
DE102016200457A1 (en) * 2016-01-15 2017-07-20 Siemens Aktiengesellschaft Winding arrangement with foot for standing casting

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DE2108343A1 (en) * 1971-02-22 1972-09-07 Transformatoren Union Ag Twisted conductors for windings of transformers and process for its manufacture
DE2363981A1 (en) * 1973-12-21 1975-07-03 Transformatoren Union Ag Spiral conductor for transformer or choke - has bandage wrapper shrunk before and during curing of binding agent
US4321426A (en) * 1978-06-09 1982-03-23 General Electric Company Bonded transposed transformer winding cable strands having improved short circuit withstand
DE19727758A1 (en) * 1997-04-17 1998-10-22 Alsthom Cge Alcatel Multiple parallel conductor for windings of electrical devices and machines
EP0917164A2 (en) * 1997-11-12 1999-05-19 Alcatel Multiple parallel conductor for windings of electric devices and machines
EP2103637A2 (en) * 2008-03-20 2009-09-23 GT Elektrotechnische Produkte GmbH Shape memory polymer and method for its production

Also Published As

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RU2556086C2 (en) 2015-07-10
PL2387047T3 (en) 2012-12-31
ES2389170T3 (en) 2012-10-23
US9111668B2 (en) 2015-08-18
KR101879755B1 (en) 2018-07-18
KR20130111222A (en) 2013-10-10
MX2012013142A (en) 2013-02-11
CN102985984A (en) 2013-03-20
EP2387047B1 (en) 2012-06-06
RU2012153561A (en) 2014-06-20
US20130199819A1 (en) 2013-08-08
WO2011141213A1 (en) 2011-11-17
BR112012028870A2 (en) 2016-07-26
CN102985984B (en) 2016-08-03

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