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
• • 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
  • H01F27/00—Details of transformers or inductances, in general
  • H01F27/28—Coils; Windings; Conductive connections
  • H01F27/32—Insulating of coils, windings, or parts thereof
• • 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
  • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
• • 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
  • H01F27/327—Encapsulating or impregnating
• • 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
  • H01F41/061—Winding flat conductive wires or sheets
  • H01F41/063—Winding flat conductive wires or sheets with insulation
• • 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
  • 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
  • H01F41/125—Other insulating structures; Insulating between coil and core, between different winding sections, around the coil
• • 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
  • H01F41/127—Encapsulating or impregnating

Definitions

• the invention relates to a winding arrangement having a number of winding sections arranged one behind the other in the axial direction, which are electrically connected to one another to form a series connection, and holding means for holding the winding sections at a distance from one another.
• the Wick ⁇ lung assembly 1 is composed of vertically stacked winding sections 2a, 2b, ..., 2n, said Wicklungsab ⁇ sections 2a, 2b, ..., 2n are electrically connected to each other, so that forming a series circuit is.
• the winding sections 2a ... 2n are wound on top of each other
• each winding section 2a ... 2n is increased by winding the winding layers in the radial direction.
• Such winding sections are commonly referred to in practice as disk windings 2a, 2n.
• the disc windings 2a to stack 2n above the other at a certain distance from each other which must be maintained due to the required withstand voltage of the winding arrangement are holding blocks 3 are provided, the disc windings 2a are introduced, 2n as holding means Zvi ⁇ rule.
• Such a block-shaped holding means has the disadvantage that it is the insulation between the disc windings
• FIG. 2 schematically shows the winding arrangement 1 according to FIG. 1, wherein it is embedded in a fixed winding insulation 4 made of a winding insulating material.
• the Wicklungsan ⁇ proper 1 forms a high-voltage winding, the right side is shown in section le- diglich from. It is he ⁇ recognizable that surrounds the high-voltage winding a low-voltage winding 5, which in turn encloses a leg 6 of an iron core.
• the undervoltage winding 5 and the winding arrangement 1 forming a high-voltage winding are part of a transformer, which is illustrated schematically in FIG. 2 as state of the art.
• the object of the invention is to provide a winding arrangement of the type mentioned, which has a high voltage strength and in which the winding sections are arranged at a small distance from each other.
• the invention achieves this object in that the Haltemit ⁇ tel comprise at least one retaining element which extends into at least two adjacently arranged winding sections, wherein said retaining member is fixedly connected to the winding sections into which it extends.
• a holding element is provided which extends into the winding sections and is connected to this sur fa ⁇ chig.
• block-shaped holding elements are avoided, which could bridge a later applied by potting insulation between the winding sections.
• a flat pressing a foil insulation is excluded.
• the holding elements can mutually insulated electrical conductors of the winding layers are placed in winding the winding sections Zvi ⁇ rule.
• each winding section having Wenig ⁇ least one holding element is connected.
• the entire winding arrangement is connected to one another exclusively via the holding elements according to the invention.
• each retaining element is formed as a flat insert strip.
• a flat insert strip can be easily inserted between the winding layers during winding of the winding sections.
• the insertion strip extends, for example, only in two juxtaposed winding sections. Deviate ⁇ accordingly thereof of the insert strip is as long designed such that it integrally extends through all the coil portions of the series circuit therethrough.
• a flat insertion strip has the advantage that it rests against the winding sections over a large area, into which the insertion strip extends.
• each winding section has winding layers wound over one another, the winding layers being insulated from one another and having an electrical conductor.
• the electrical conductor is, for example, a band-shaped ⁇ flat metal conductor, said insulating films are wrapped between the metal conductors that provide not ⁇ manoeuvrable electrical insulation between the electrical LEI tern. Deviating from this, the electrical conductor has an insulating lacquer.
• each retaining element extends between mutually gewekelte winding layers and is firmly connected to at least one of these winding layer.
• each retaining element is firmly connected to two winding layers between which it extends.
• the holding elements are arranged in pairs and extend with a radial spacing between the winding sections. In other words, the two holding elements of a pair extend in the radial direction next to one another as a double holder.
• winding layers are at least partially firmly connected to each other for further stabilization of a winding section.
• the compound of the winding layers together is advantageously carried out by a cured resin.
• This resin can, for example, be introduced between the winding layers .
• the resin may also be incorporated as a component of a prepreg, with the resin in the B-
• the prepreg then has adhesive properties at room temperature, so that the winding layers are already linked together during winding. By preheating the entire winding assembly hardens the prepreg, so that then a stable connection between the
• prepreg is used herein for a fibrous structure which is impregnated with an incompletely cured resin.
• each support member is formed from a resin-impregnated glass fiber fabric and epoxy resin in particular ge ⁇ .
• the coefficient of thermal expansion of the holding element is adapted to the expansion coefficient of the later resin insulation for the entire winding arrangement.
• each support member is bonded to the Wicklungsab ⁇ cut into which it extends. The Ver ⁇ sticking of the holding elements with the winding sections takes place again by a preferably not fully Once cured prepreg. By introducing heat, the prepreg hardens, so that the connection between the holding member and respective winding sections is reinforced.
• each winding section is a disk-shaped disk winding.
• Disc windings are annular.
• the winding layers of a disk winding extend exclusively in a common horizontal layer or layer. When winding each winding layer increases the disk winding exclusively in the axial direction.
• the winding portions are formed for example by a a ⁇ Zigen conductor that is wound throughout.
• a winding insulation which consists of a solid Wicklungsisolierstoff.
• Such a solid winding ⁇ insulation material is, for example, a well-known in the art epoxy resin.
• Such a solid state insulated winding assembly is also referred to as cast resin winding.
• a foot member is foundeds- least provided which is connected with one of the winding ⁇ portions and adapted to support the entire coil assembly.
• each foot element expediently has a predominantlyisolierabites, which consists of an electrically insulating solid insulating material.
• the end region of the foot element is placed on a component, wherein the researchingisolierabites provides the necessary electrical Iso ⁇ lation.
• the winding sections are at Be ⁇ drive at a high voltage potential.
• the foot element allows a standing potting the series-connected winding sections and thus forming a strong thick inner wall of the fixed winding insulation. In this way, the winding arrangement according to the invention can be subjected to equal dimensioning for higher voltages.
• the invention also relates to a method for producing a winding arrangement, in which winding sections are wound, the winding layers of mutually insulated electrical conductors, at least one holding element is introduced during winding between the winding layers, so that it extends between at least two winding sections, the winding arrangement standing with poured an insulating material and is heated to cure the insulating material.
• the winding assembly is preheated after the introduction of the holding elements, so that they each Hal ⁇ teelement connects with the winding sections, in which it extends.
• preheating the winding arrangement not only each holding element can be connected to the respective winding sections.
• FIG. 2 is a schematic section through a cast-resin transformer with a winding arrangement according to FIG. 1 after casting;
• Figure 3 shows an embodiment of the winding arrangement according to the invention after the casting and
• Figure 4 illustrate an embodiment of the method according to the invention schematically.
• Figures 1 and 2 show a winding arrangement 1 according to the prior art before or after the casting and have already been described above.
• FIG. 3 shows schematically an embodiment with a section through a transformer 7 according to the invention with a leg 6 of an iron core and an undervoltage winding 5 and an embodiment of the inventive ⁇ Shen winding assembly 8, which serves as a high-voltage winding.
• holding means 9a and 9b extend between the disc windings 2a, 2b, 2n.
• the holding means 9a and 9b are each formed as a flat insertion strip and each extend in one piece through all the disk windings 2a, 2b, 2n of the winding arrangement 8.
• the winding layers 10 of each winding section 2a, 2b, 2n can be seen in FIG.
• the coil layers 10 are in the example shown in Figure 3 exemplary embodiment of an inner side, which faces to 6 ⁇ the leg is wrapped in the radial direction 11 to the outside.
• each winding section 2a,..., 2n increases from the inside to the outside.
• the holding means 9a and 9b extend between the winding layers and are fixedly connected thereto, so that the winding sections 2a, ..., 2n are held by the holding means 9a and 9b at a distance from each other. For this reason, it is possible to cast the winding insulation without a Wick ⁇ ment carrier free-standing in liquid form with the winding sections 2a, 2b, 2n and then fully harden by heating the winding insulation.
• a winding assembly 8 is provided, which is inexpensive, wherein the winding insulator 4 a can have freely selectable inner wall thickness of 1 mm to 50 mm.
• the winding layers 10 extend in a ring-shaped manner in a horizontal layer, so that the winding sections 2a,..., 2n form so-called disk windings.
• the disk windings 2a,..., 2n are circumferentially closed, with the leg 6 extending together with the undervoltage winding 5 inside each disk winding.
• FIG. 4 shows the wrapping of a holding element 9a in the winding sections 2a,..., 2n.
• a ⁇ me-on-metal strip conductor 12 is wound, for example, of aluminum, together with an insulating film 13 on an already wound winding layer 10th
• the insert strip 9a is first inserted as a holding means.
• the Einlestrerei ⁇ fen 9a consists of a glass fiber prepreg.
• the prepreg of the insertion strip 9a is not fully cured.
• the holding element 9a wrapped in this way is, after the holding element 9b has been wrapped in a later winding position, preheated, so that a firm connection is established between the respective winding sections or disk windings 2a,... 2n and the prepregs 9a, 9b.
• the winding carrier can be removed, wherein the holding elements 9a and 9b the disk windings 2a, ..., 2n - without winding insulation 4 - keep at a distance to each other.
• the holding elements 9a and 9b the disk windings 2a, ..., 2n - without winding insulation 4 - keep at a distance to each other.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Insulating Of Coils (AREA)
• Coils Of Transformers For General Uses (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=57680235

Family Applications (1)

Country Status (7)

Family Cites Families (9)

• 2016
  • 2016-01-15 DE DE102016200461.1A patent/DE102016200461A1/de not_active Ceased
  • 2016-12-15 BR BR112018014220-4A patent/BR112018014220A2/pt not_active IP Right Cessation
  • 2016-12-15 EP EP16819495.9A patent/EP3378075A1/de not_active Withdrawn
  • 2016-12-15 CN CN201680079551.9A patent/CN108496230A/zh active Pending
  • 2016-12-15 RU RU2018122215A patent/RU2698472C1/ru active
  • 2016-12-15 WO PCT/EP2016/081125 patent/WO2017121570A1/de active Application Filing
  • 2016-12-15 US US16/069,992 patent/US20190035532A1/en not_active Abandoned

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