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 with a metallic winding conductor which forms individual windings, the metallic winding conductor having a metallic conductor and an electrically insulating material enclosing the metallic conductor. Furthermore, the invention relates to electrical insulation of a metallic, electrical conductor and the formation of an anodized Al strip for electrical windings.
• an electrical winding in particular for use as a primary - or secondary Wick ⁇ lung in transformer - ter is electrically isolate the electrical Wicklungslei ⁇ .
• the winding conductor is continuously wound on a carrier, in the following the single winding of the winding conductor around the carrier is defined as a single winding.
• the individual windings of the electrical winding conductor lying immediately after a winding must have electrical insulation with such an insulation effect that a voltage breakdown between the individual windings or within the winding is prevented.
• the use of a metallic conductor, in particular aluminum tape, in conjunction with a layer insulation (Geafol technique), which is usually made of plastics, is known, particularly for use in the medium and high voltage range.
• DE 40 06 697 A1 describes a transformer of small size, the primary and secondary windings being wound around a core in such a way that they overlap one another and at least one of the primary and secondary windings has a sheathed conductor made of insulating plastic.
• the isolation can also be prepared from a ren On the other insulation material such as a resin, hen best ⁇ .
• DE 69 629 318 T2 describes a dry-insulated transformer whose high-voltage winding contains an insulating sleeve made of thermoplastic resin and whose low-voltage winding is encased by an electrically conductive resin.
• the task of the present development is therefore to provide an electrical winding which ensures adequate insulation and nevertheless has good thermal conductivity properties.
• the object is achieved in that the me ⁇ -metallic winding conductor has a metalli ⁇ the surface of the conductor's enveloping metal oxide layer.
• the metal oxide layer is produced by means of an electrolytical oxidation process (Eloxation).
• Eloxation electrolytical oxidation process
• the electrical winding according to the invention preferably 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 depending on the maximum required dielectric strength within the electrical winding. Reaches the thickness of the anodized layer to insulate not exclude a conductor Mate ⁇ according to the invention can also additional insulation of reduced thickness are introduced, as when using rials without anodic coating.
• the combination of the insulating metal oxide layer and the electrically insulating material above prevents the voltage breakdown between the individual windings lying next to each other.
• the purpose maximum required dielectric strength varies ⁇ but within the electrical winding, in particular due to structural and physical, for example due to non linea ⁇ rer surge voltage distribution or thermal conditions within the winding.
• maximum required surfaces within the electrical winding is also the thickness of the electrically insulating material verwen- Deten adjusted.
• the greater the required maximum dielectric strength in a certain region of the electrical winding the greater the thickness of the insulation, for example the thickness and / or the material properties, in particular the insulation class. se, of the electrically insulating material, in the respective segment of the electrical winding. This allows the size of the electrical winding to be reduced and, at the same time, the electrical insulating material to be used in a more targeted and therefore more cost-effective manner.
• the thickness of the metal oxide layer on the metallic conductors in the manner is varied in that, depending on the maximum REQUIRED ⁇ chen withstand voltage, an insulation property is further added within the electrical winding.
• an insulation property is further added within the electrical winding.
• thermal conditions within the electrical winding of the thickness of the electrically insulating material and / or the variation of the thickness of the metal oxide can thus be due to a variation in each case a fine-tuned isolation for the ready ⁇ provide electrical winding.
• the metal oxide layer on the metallic conductor has a constant thickness 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 case ⁇ play the anodized layer on an aluminum conductor has good temperature properties, and therefore reduces the thermal load 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 insulation material classification.
• an electrically insulating material such as a plastic film, correspondingly thinner selected and / or reduced Materialei ⁇ be used properties.
• the thickness of the electrically insulating material are almost to zero Bezie ⁇ hung cases even omitted entirely locally, so that the insulation effect between the individual windings on the corresponding points only, due to the metal oxide layer of the electrical winding conductor is given.
• the invention provides that the elekt ⁇ driven insulating material has a constant thickness and / or kon ⁇ stante material property, in particular with respect to their iso ⁇ lierstofftex, comprising and depending on the maximum required dielectric strength 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 minimal insulation property is specified for the electrical winding.
• the thickness of the metal oxide layer is adjusted depending on the maximum required dielectric strength within the electrical winding.
• the maximum he ⁇ ford variable dielectric strength within the electrical winding the nature of the metal oxide layer varies in dependency.
• a thin film is run in during the winding process. If the dielectric strength at the most stressed point is still not sufficient, a second or even third film (parallel) can be run in here. In this way, need be used for the winding process only 2 Materials: a) Wi ⁇ ckelmaterial same with anodized coating thickness and b) the film of the same thickness. This does not require retooling during the winding process and allows an effective Mate ⁇ rialfoli of the materials.
• the purity of the anodized or carried on ⁇ metal has a large influence on the insulation and thermal properties of the electrical winding.
• Impurities in the metal oxide layer affect the insulation and heat properties.
• Appropriate through targeted use of output and oxidation products to produce the metal oxide and corresponding manufacturing methods are opinion within the electrical winding affects the insulating properties, depending on the maximum required dielectric strength, making it ideal for space-saving in the OF INVENTION ⁇ to the invention implemented electrical winding.
• the maximum required voltage ⁇ varies depending strength within the electrical winding, the contractual quality of the electrically insulating material.
• the electrically insulating material layers placed ⁇ builds.
• the layer-by-layer structure ensures that in the event of damage to a layer, even a microscopic one, 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 can be adapted, in particular depending on the dielectric strength. Only if the electrically insulating material is completely damaged at one point is there no longer an insulating effect of the electrically insulating material.
• 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 the electrically insulating material are so ⁇ beschaf fen that no relative displacements talloxidtik between the metal contact and the electrically insulating material on ⁇ . , In particular roughened by use of a, surface is ensured, is that during the manufacturing ⁇ process and during operation, a displacement of the e lectric insulating material and the conductor relative to-each other out, and thus a frequent and time- ⁇ expensive follow-up of the electric Winding is not necessary with regard to its insulation properties.
• the electrically insulating mate rial ⁇ advantageously contains paints, plastics, insbeson ⁇ particular plastic film and / or paper, wherein the electrically insulating material is advantageously listed in layers is built and the electrically insulating material at least partially surrounds the metal oxide layer.
• an anodized aluminum tape as an electrical winding with insulating material, in particular if the value of the winding voltage should correspond to the value of the layer voltage in the sense of a high breakdown protection of electrical windings.
• the anodized Al strip as the metallic winding conductor with Me ⁇ is first on the removable support talloxid für wound into a coil, then several ⁇ re coils as segments of a total winding with taps electrically connected in series arranged and tikwicklung in the Ge ⁇ at the entrance and coils located at the exit are supplemented with additional layers of insulating material, which may consist of additional layers of foil.
• Punctual additional insulation is provided on the taps at the beginning / end of the coils or the overall winding, whereby the punctual additional insulation should also consist of a film, paper or insulating varnish.
• FIG. 1 shows a schematic representation of the structure of an electrical winding conductor according to the invention
• Fig. 2 is a schematic representation of a single ⁇ winding the electrical winding according to the invention during the winding process; 3 shows a schematically merged representation of configurations of an AI tape as coils (6.1) for electrical windings (6) to form an overall winding in segments; Fig. 4 sections of Figure 3 through the overall winding.
• FIG. 5 sections of Fig. 3 through a segment with taps (8) of the overall winding.
• 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 an ner electrical plastic insulation film 3, the metal oxide layer ⁇ 2 encloses or at least between two disclosed Benach ⁇ superposed individual windings is located. If segments are connected in series, only the final segments receive this additional insulation, the segments in between are designed 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 only be present at certain points on the metallic conductor 1. In the example shown in FIG.
• a metal oxide layer 2 is shown on the conductor 1 as a sheath with a constant thickness, which is enclosed by an electrically insulating material 3 with a variable thickness.
• the electrically insulating material 3 can either be wrapped around the metallic conductor 1 as an additional sheathing or as an intermediate layer, or alternatively it can only be placed on the metallic conductor 1 or on the metal oxide layer 2 of the electrical conductor 1 (at certain points.
• FIG. 2 shows an electrical winding 6 according to the invention, the metallic conductor 1, the metal oxide layer 2 and the electrically insulating material 3 being wound onto 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 carrier 5 is preferably formed as a cylindrical body and ensures, in the course of the manufacturing process of the electrical winding, that the electrically insulating material 3 and the metallic conductor 1 with the metal oxide layer 2 are each wound one above the other in defined paths.
• the winding conductor 4 thus formed is continuously wound onto the carrier 5 during the manufacturing process.
• Axial direction in the present example shown in FIG. 2 there is only one insulation effect with respect to the metal oxide layer 2 in the axial direction.
• FIGS. 3, 4 and 5 shows schematically the Ausbil ⁇ dung of an AI belt as windings for electric 6.1 Wick ⁇ lungs 6 to an application in segments total winding as it may be used in a transformer.
• FIG. 3 for the sake of clarity alone, the configurations of the Al tape are shown schematically merged as windings 6 to form the overall winding carried out in segments.
• the Al band forms the metallic conductor 1 and the metallic winding conductor 4 and its sheathing anodized layer forms the metal oxide layer 2.
• the anodized Al band is wound on the removable carrier 5 (FIG. 2) to form a coil 6.
• FIG. 3 The arrangement and electrically connected connection of several coils 6 as segments of the overall winding with taps 8 can be seen in FIG. 3.
• the coil 6 lying in the overall winding at the entrance is supplemented with layers 3.1 of insulating material 3 which are additionally wound only at the beginning 7, the subsequent coil 6 only has layers of the e- anodized AI tape as a metallic conductor 1 with a metal oxide layer 2 and the coil 6 lying in the overall winding at the output is in turn supplemented with layers 3.1 of insulating material 3 additionally wound at the other end 7 thereof.
• FIG. 4 show sections according to Fig. 3 se ⁇ by the total coil and analogous to FIG. 5 sections, each by one segment with taps 8, the overall winding from which selective in connection with FIG. 3 additional insulations 9 on the
• the additional layers 3.1 and the punctual additional insulation 9 on the taps 8 at the beginning / end of the overall winding 7 consist of plastic film, paper or lacquer and the connections of the taps 8, not shown, and the connections for winding or coil start and winding or End of coil made of non-anodized AI tape.

Landscapes

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

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=36314219

Family Applications (1)

Country Status (14)

Families Citing this family (9)

Family Cites Families (27)

• 2005
  • 2005-12-08 DE DE202005019390U patent/DE202005019390U1/de not_active Expired - Lifetime
• 2006
  • 2006-12-05 RU RU2008127499/09A patent/RU2008127499A/ru not_active Application Discontinuation
  • 2006-12-05 DK DK06830352.8T patent/DK1958217T3/da active
  • 2006-12-05 PL PL06830352T patent/PL1958217T3/pl unknown
  • 2006-12-05 BR BRPI0619568-7A patent/BRPI0619568A2/pt not_active IP Right Cessation
  • 2006-12-05 ES ES06830352T patent/ES2383703T3/es active Active
  • 2006-12-05 EP EP06830352A patent/EP1958217B1/fr active Active
  • 2006-12-05 CN CNA200680046383XA patent/CN101341555A/zh active Pending
  • 2006-12-05 US US12/096,696 patent/US20080309444A1/en not_active Abandoned
  • 2006-12-05 PT PT06830352T patent/PT1958217E/pt unknown
  • 2006-12-05 AT AT06830352T patent/ATE549726T1/de active
  • 2006-12-05 WO PCT/EP2006/069302 patent/WO2007065887A2/fr active Application Filing
  • 2006-12-05 JP JP2008543815A patent/JP2009518836A/ja active Pending
  • 2006-12-06 TW TW095145328A patent/TW200733146A/zh unknown

Non-Patent Citations (1)

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