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EP1958217B1 - Enroulement électrique et son procédé de fabrication - Google Patents

Enroulement électrique et son procédé de fabrication Download PDF

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Publication number
EP1958217B1
EP1958217B1 EP06830352A EP06830352A EP1958217B1 EP 1958217 B1 EP1958217 B1 EP 1958217B1 EP 06830352 A EP06830352 A EP 06830352A EP 06830352 A EP06830352 A EP 06830352A EP 1958217 B1 EP1958217 B1 EP 1958217B1
Authority
EP
European Patent Office
Prior art keywords
winding
insulating material
electrical winding
conductor
metallic
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.)
Not-in-force
Application number
EP06830352A
Other languages
German (de)
English (en)
Other versions
EP1958217A2 (fr
Inventor
Fritz Sorg
Mirko Windisch
Volker Wandelt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Steinert Elektromagnetbau GmbH
Siemens AG
Siemens Corp
Original Assignee
Steinert Elektromagnetbau GmbH
Siemens AG
Siemens Corp
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 Steinert Elektromagnetbau GmbH, Siemens AG, Siemens Corp filed Critical Steinert Elektromagnetbau GmbH
Priority to PL06830352T priority Critical patent/PL1958217T3/pl
Publication of EP1958217A2 publication Critical patent/EP1958217A2/fr
Application granted granted Critical
Publication of EP1958217B1 publication Critical patent/EP1958217B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2871—Pancake coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/323—Insulation between winding turns, between winding layers
    • 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
    • H01F41/12—Insulating of windings
    • H01F41/122—Insulating between turns or between winding layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • 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
    • H01F41/10—Connecting leads to windings

Definitions

  • the invention relates to an electrical winding having a metallic winding conductor which forms individual windings, wherein the metallic winding conductor has a metallic conductor and an electrically insulating material enclosing the metallic conductor. Furthermore, the invention relates to an electrical insulation of a metallic, electrical conductor and the formation of an anodized Al-band for electrical windings.
  • the electrical winding conductor When producing an electrical winding, in particular for use as a primary or secondary winding in the transformer construction, the electrical winding conductor must be electrically insulated.
  • the winding conductor is continuously wound on a carrier, wherein the single winding of the winding conductor is defined by the carrier as a single winding in the following.
  • the individual windings of the electrical winding conductor lying directly after a winding must have an electrical insulation with such an insulating effect that a voltage breakdown between the individual windings or within the winding is prevented.
  • a metallic conductor in particular aluminum strip, in conjunction with a mostly made of plastics layer insulation (Geafol technique) is known.
  • this describes the DE 40 06 697 A1 a transformer of small size, wherein the primary and secondary windings are wound around a core so that they overlap each other and at least one of the primary and secondary windings has a sheathed conductor made of insulating plastic.
  • the insulation may alternatively consist of another insulating material, such as a resin.
  • this describes the DE 69 629 318 T2 a dry-insulated transformer whose high-voltage winding contains an insulating sleeve of thermoplastic resin and whose low-voltage winding is enveloped by an electrically conductive resin.
  • conductive films can be coated with an electrically insulating oxal layer.
  • the FR 154 71 45 the electrolytic application of an aluminum oxide on an electrical conductor for thermal impregnation.
  • EP 1 033 724 A1 the sheathing of an electrical conductor by means of an inorganic material oxide.
  • the object of the present invention is therefore to provide an electrical winding which ensures sufficient insulation and nevertheless has good thermal conduction properties. Operating temperatures, line losses, conductor cross-sections and heat losses should be reduced according to the respective requirements and thus lead to smaller dimensions with lower weights and additional insulation.
  • the object is achieved by an electrical winding according to claims 1-7.
  • the metallic winding conductor has a metal dioxide layer surrounding the surface of the metallic conductor.
  • the metal oxide layer is produced by means of an electrolytic oxidation process (anodization).
  • the separate application of a metal oxide layer to the metallic conductor e.g. Gluing or soldering, possible.
  • the electrical winding according to the invention consists of a strip material with an aluminum conductor, which is coated with an aluminum oxide layer.
  • the electrically insulating material has a variable thickness as a function of the maximum required dielectric strength within the electrical winding. If the thickness of the anodized layer is insufficient for insulation, additional insulation of lesser thickness may also be introduced according to the invention, as when using a conductor material without anodized layer.
  • the combination of the insulating metal oxide layer and the overlying electrically insulating material prevents the voltage breakdown between the juxtaposed individual windings.
  • the maximum required dielectric strength varies within the electrical winding, in particular due to structural and physical, eg due to non-linear impulse voltage distribution or thermal conditions, within the winding.
  • the thickness of the electrically insulating material used is likewise adapted.
  • the thickness of the metal oxide layer on the metallic conductor is varied in such a way that an insulating property continues to exist, depending on the maximum required dielectric strength within the electrical winding.
  • the electrical winding can be provided due to a variation of the thickness of the electrically insulating material and / or the variation of the thickness of the metal oxide each a precisely tuned insulation for the electrical winding.
  • the metal oxide layer has a constant thickness on the metallic conductor and the thickness of the electrically insulating material varies depending on the maximum required dielectric strength within the electrical winding.
  • the metal oxide layer such as the anodized layer on an aluminum conductor, has good temperature properties and thus reduces the thermal stress on the electrical winding.
  • the electrically insulating material has a variable thickness and / or variable material properties.
  • the electrically insulating material is more strongly shaped and has a greater thickness and / or better material properties, such as a higher quality insulating classification.
  • an electrically insulating material such as a plastic film
  • a plastic film is chosen to be correspondingly thinner and / or reduced material properties are used.
  • These material properties of the plastic film such as the underlying insulating material class, can be varied depending on the necessary location-dependent dielectric strength.
  • the thickness of the electrically insulating material can be omitted almost to zero or even locally, so that the insulating effect between the individual windings is given at the corresponding points only due to the metal oxide layer of the electrical winding conductor.
  • the invention provides that the electrically insulating material has a constant thickness and / or constant material property, in particular with respect to their insulating material, and depending on the maximum required withstand voltage within the electrical winding, the metal oxide layer has a different thickness.
  • a constant thickness and / or material properties of the electrically insulating material a minimum insulation property for the electrical winding is predetermined.
  • the metal oxide layer is adapted in terms of its thickness.
  • condition of the metal oxide layer varies depending on the maximum required dielectric strength within the electrical winding.
  • a thin film can be run in during the winding process. If the dielectric strength at the most stressed point is still insufficient, you can let in a second or even third foil (parallel) here. As a result, only 2 materials need be used for the winding process: a) wrapping material with anodized layer of the same thickness and b) film of the same thickness. This does not require retooling operations during the winding process and allows for an efficient use of materials.
  • the purity of the anodized or applied metal oxide layer has a great influence on the insulation and thermal properties of the electrical winding.
  • impurities within the metal oxide layer lead to an influence on the insulation and thermal properties.
  • the insulation properties are influenced depending on the maximum voltage required within the electrical winding and thus implemented optimally and space-saving in the electrical winding according to the invention.
  • the nature of the electrically insulating material varies depending on the maximum required withstand voltage within the electrical winding.
  • the electrically insulating material contains paints, plastics, in particular plastic films, and / or paper.
  • the electrically insulating material is constructed in layers.
  • the layered construction ensures that, even if microscopically small damage to a layer, for example a plastic film layer, the adjacent layers of the electrically insulating material ensure insulation of the electrical winding.
  • the variation of the material properties of the respective plastic film layer, in particular depending on the dielectric strength can be adjusted. Only with a complete damage of the electrically insulating material at one point an insulating effect of the electrically insulating material is no longer given.
  • the metal oxide layer can be built up in layers.
  • An advantageous embodiment of the electrical winding is characterized in that the surface of the metal oxide layer and of the electrically insulating material are such that no relative displacements occur between the metal oxide layer and the electrically insulating material.
  • the use of a, in particular roughened, surface ensures that a displacement of the electrically insulating material and of the conductor relative to one another is excluded during the production process and during operation, and thus a frequent and time-consuming check of the electrical winding with respect to its insulating properties is not necessary.
  • the surface of the metallic, electrical conductor is coated with a metal oxide and the metal oxide layer is at least partially enveloped by an electrically insulating material.
  • an electrically insulating material advantageously contains paints, plastics, in particular plastic film and / or paper, wherein the electrically insulating material is advantageously constructed in layers and the electrically insulating material at least partially surrounds the metal oxide layer.
  • anodized Al strip as an electrical winding with insulating material, in particular, if the value of the winding voltage is to correspond to the value of the layer voltage in the sense of a high dielectric strength of electrical windings.
  • the anodized Al tape is first wound onto a metallic winding conductor with metal oxide layer to a coil, then several coils are arranged as segments of a total winding with taps electrically connected in series and lying in the overall winding at the input and output coil with additional layers of insulating material added, which may consist of additional film layers.
  • punctual additional insulation is provided at the taps at the beginning / end of the coils or the overall winding, wherein the punctual additional insulation should also consist of a foil, paper or insulating varnish.
  • the figure Fig. 1 shows a schematic representation of the metallic winding conductor 4 according to the invention.
  • the metallic winding conductor 4 consists of a metallic aluminum conductor 1, at least one aluminum oxide layer 2 and a electrical plastic insulation film 3, which surrounds the metal oxide layer 2 or at least lies between two adjacent single windings lying one above the other. If segments are connected in series, only the final segments will receive this additional insulation, the segments in between will be carried out without additional insulation, except for the areas with taps.
  • the electrical winding conductor 4 can either be completely enclosed by a metal oxide layer 2 or, alternatively, a metal oxide layer 2 can be present only at certain points of the metallic conductor 1. In the example of FIG Fig.
  • a metal oxide layer 2 is shown on the conductor 1 as a sheath of constant thickness, which is enclosed by an electrically insulating material 3 with a variable thickness.
  • the electrically insulating material 3 can either be wrapped as an additional sheathing or as an intermediate layer around the metallic conductor 1 or alternatively only be placed at certain points on the metallic conductor 1 or on the metal oxide layer 2 of the electrical conductor 1.
  • an electrical winding 6 according to the invention is shown, wherein the metallic conductor 1, the metal oxide layer 2 and the electrically insulating material 3 are wound on a carrier 5 in the form of a plastic film.
  • the metal oxide layer 2 is arranged at least on the top and bottom of the metallic conductor 1.
  • the support 5 is preferably designed as a cylindrical body and ensures, in the context of the production process of the electrical winding, that the electrically insulating material 3 and the metallic conductor 1 are wound on the metal oxide layer 2 in each case in defined paths one above the other.
  • the winding conductor 4 thus formed is continuously wound onto the carrier 5 during the manufacturing process.
  • Axial direction exists in the present in the figure Fig.
  • the plastic film 3 is applied as an electrically insulating material as additional insulation on the respective metal oxide layer 2. In this way, depending on the maximum dielectric strength required within the electrical winding 6, a complete insulation of the electrical winding 6 is ensured and a partial reinforcement of the insulation can be achieved by metal oxide layer 2 or insulating layer 2 being reinforced at the points of highest stress loading.
  • FIG. 3, 4 and 5 schematically the formation of an Al-band as turns for electrical windings 6 to a running in segments total winding, as they can be used in a transformer.
  • the Al-band forms the metallic conductor 1 and metallic winding conductor 4 and its sheathing anodized layer the metal oxide layer 2.
  • the anodized Al-tape is applied to the removable carrier 5 (FIG. Fig. 2 ) wound into a coil 6.
  • the arrangement and electrically connected in series connection of several coils 6 as segments of the overall winding with taps 8 is in the Fig. 3 seen.
  • the coil 6 located in the overall winding at the entrance is supplemented with layers 3.1 of insulating material 3 which are additionally wrapped only at the beginning 7, the subsequent coil 6 has only layers of the anodised one Al-band as a metallic conductor 1 with metal oxide 2 on and lying in the overall winding at the output coil 6 is in turn supplemented with only at the end 7 additionally wrapped layers 3.1 of insulating material.
  • FIG. 4 Cuts after Fig. 3 through this overall winding and analog Fig. 5 Cuts through each segment with taps 8 of the total winding, from which in conjunction with Fig. 3 selective additional insulation 9 can be seen at the taps 8 at the beginning / end of the overall winding 7. If you look in FIG. 5 presents the central axis, so the taps (and thus the additional insulation) are visible only on one half of the representation.
  • the additional layers 3.1 and the punctual additional insulation 9 at the taps 8 at the beginning / end of the overall winding 7 consist of Kusntstofffolie, paper or paint and not shown terminals of the taps 8 and the connections for winding or coil beginning and winding or coil end from non-anodised A1 tape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Windings For Motors And Generators (AREA)
  • Insulated Conductors (AREA)
  • Coils Of Transformers For General Uses (AREA)

Claims (12)

  1. Enroulement ( 6 ) électrique comprenant un conducteur ( 4 ) métallique d'enroulement, qui forme des enroulements individuels, le conducteur ( 4 ) métallique d'enroulement comprenant un conducteur ( 1 ) métallique et une matière ( 3 ) isolante du point du vue électrique qui entoure le conducteur ( 1 ) métallique,
    caractérisé en ce que le conducteur ( 4 ) métallique d'enroulement a une couche ( 2 ) d'oxyde métallique gainant, au moins en partie, la surface du conducteur ( 1 ) métallique, dans lequel, en fonction de la rigidité diélectrique qui est nécessaire dans l'enroulement ( 6 ) électrique, la couche ( 2 ) d'oxyde métallique a une épaisseur variable.
  2. Enroulement ( 6 ) électrique suivant la revendication 1, caractérisé en ce que, en fonction de la rigidité diélectrique maximum qui est nécessaire, la matière ( 3 ) isolante du point de vue électrique a, dans l'enroulement ( 6 ) électrique, une épaisseur variable et/ou des propriétés de matière variables.
  3. Enroulement ( 6 ) électrique suivant l'une des revendications précédentes 1 ou 2,
    caractérisé en ce que, en fonction de la rigidité diélectrique maximum qui est nécessaire, la nature de la couche ( 2 ) d'oxyde métallique varie dans l'enroulement ( 6 ) électrique.
  4. Enroulement ( 6 ) électrique suivant l'une des revendications 1 à 3,
    caractérisé en ce que la matière ( 3 ) isolante du point de vue électrique contient des vernis, des matières plastiques, notamment des feuilles de matière plastique, et/ou du papier.
  5. Enroulement ( 6 ) électrique suivant l'une des revendications 1 à 4,
    caractérisé en ce que la matière ( 3 ) isolante du point de vue électrique et/ou la couche ( 2 ) d'oxyde métallique sont formées en couches.
  6. Enroulement ( 6 ) électrique suivant l'une des revendications précédentes 1 à 5
    caractérisé en ce que, en fonction de la rigidité diélectrique maximum qui est nécessaire, la nature de la matière ( 3 ) isolante du point de vue électrique varie dans l'enroulement ( 6 ) électrique.
  7. Enroulement ( 6 ) électrique suivant l'une des revendications 1 à 6
    caractérisé en ce que la surface de la couche ( 2 ) d'oxyde métallique et de la matière ( 3 ) isolante du point de vue électrique sont telles qu'il ne se produit pas de déplacement relatif entre la couche ( 2 ) d'oxyde métallique et la matière ( 3 ) isolante du point de vue électrique.
  8. Constitution d'un ruban d'Al anodisé en enroulement ( 6 ) électrique ayant de la matière ( 3 ) isolante suivant l'une des revendications 1 à 7,
    caractérisée en ce que le ruban d'Al anodisé enroulé en une bobine ( 6 ) sur un support ( 5 ) pouvant être retiré se présente sous la forme d'un conducteur ( 4 ) métallique d'enroulement ayant une couche ( 2 ) d'oxyde métallique,
    - l'agencement et le montage en série du point de vue électrique de plusieurs bobines ( 6 ) sont constitués en segments d'un enroulement global ayant des prises ( 8 ) et
    - les bobines se trouvant à l'entrée et à la sortie dans l'enroulement global sont complétées par des couches ( 3.1 ) supplémentaires de matière ( 3 ) isolante.
  9. Constitution d'un ruban d'Al anodisé en enroulement ( 6 ) électrique ayant de la matière ( 3 ) isolante suivant la revendication 8,
    caractérisée en ce que des isolants ( 8.1, 9 ) supplémentaires ponctuels sont mis sur les prises.
  10. constitution d'un ruban d'Al anodisé en enroulement ( 6 ) électrique ayant de la matière ( 3 ) isolante suivant l'une des revendications 8 ou 9,
    caractérisée en ce que les couches ( 3.1 ) supplémentaires sont constituées sous la forme de feuilles.
  11. Constitution d'un ruban d'Al anodisé en enroulement ( 6 ) électrique ayant de la matière ( 3 ) isolante suivant l'une des revendications 9 ou 10,
    caractérisée en ce que les isolants ( 9 ) supplémentaires ponctuels sont constitués sous la forme de feuilles.
  12. Constitution d'un ruban d'Al anodisé en enroulement ( 6 ) électrique ayant de la matière ( 3 ) isolante suivant l'une des revendications 8 à 11,
    caractérisée en ce que des bornes en ruban d'Al non anodisé sont prévues sur les prises ( 8 ).
EP06830352A 2005-12-08 2006-12-05 Enroulement électrique et son procédé de fabrication Not-in-force EP1958217B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06830352T PL1958217T3 (pl) 2005-12-08 2006-12-05 Uzwojenie elektryczne i sposób jego wytwarzania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005019390U DE202005019390U1 (de) 2005-12-08 2005-12-08 Elektrische Wicklung
PCT/EP2006/069302 WO2007065887A2 (fr) 2005-12-08 2006-12-05 Enroulement electrique

Publications (2)

Publication Number Publication Date
EP1958217A2 EP1958217A2 (fr) 2008-08-20
EP1958217B1 true EP1958217B1 (fr) 2012-03-14

Family

ID=36314219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06830352A Not-in-force EP1958217B1 (fr) 2005-12-08 2006-12-05 Enroulement électrique et son procédé de fabrication

Country Status (14)

Country Link
US (1) US20080309444A1 (fr)
EP (1) EP1958217B1 (fr)
JP (1) JP2009518836A (fr)
CN (1) CN101341555A (fr)
AT (1) ATE549726T1 (fr)
BR (1) BRPI0619568A2 (fr)
DE (1) DE202005019390U1 (fr)
DK (1) DK1958217T3 (fr)
ES (1) ES2383703T3 (fr)
PL (1) PL1958217T3 (fr)
PT (1) PT1958217E (fr)
RU (1) RU2008127499A (fr)
TW (1) TW200733146A (fr)
WO (1) WO2007065887A2 (fr)

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US7220917B2 (en) * 2004-12-17 2007-05-22 General Electric Company Electrical wire and method of making an electrical wire

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JP2009518836A (ja) 2009-05-07
WO2007065887A2 (fr) 2007-06-14
RU2008127499A (ru) 2010-01-20
CN101341555A (zh) 2009-01-07
US20080309444A1 (en) 2008-12-18
WO2007065887A3 (fr) 2007-08-02
ES2383703T3 (es) 2012-06-25
BRPI0619568A2 (pt) 2011-10-04
EP1958217A2 (fr) 2008-08-20
PT1958217E (pt) 2012-05-23
TW200733146A (en) 2007-09-01
DE202005019390U1 (de) 2006-04-20
ATE549726T1 (de) 2012-03-15
DK1958217T3 (da) 2012-06-11
PL1958217T3 (pl) 2012-08-31

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