EP0746860A1 - Faisceau de conducteurs torsade pour enroulement de machines et appareils electriques - Google Patents

Faisceau de conducteurs torsade pour enroulement de machines et appareils electriques

Info

Publication number
EP0746860A1
EP0746860A1 EP95909572A EP95909572A EP0746860A1 EP 0746860 A1 EP0746860 A1 EP 0746860A1 EP 95909572 A EP95909572 A EP 95909572A EP 95909572 A EP95909572 A EP 95909572A EP 0746860 A1 EP0746860 A1 EP 0746860A1
Authority
EP
European Patent Office
Prior art keywords
conductor
partial
spacers
conductors
stack
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
Application number
EP95909572A
Other languages
German (de)
English (en)
Other versions
EP0746860B1 (fr
Inventor
Paul Perger
Gernot Schnaubelt
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.)
ASTA Elektrodraht GmbH
Original Assignee
ASTA Elektrodraht GmbH
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 ASTA Elektrodraht GmbH filed Critical ASTA Elektrodraht GmbH
Publication of EP0746860A1 publication Critical patent/EP0746860A1/fr
Application granted granted Critical
Publication of EP0746860B1 publication Critical patent/EP0746860B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
    • 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
    • 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
    • H01F2027/2838—Wires using transposed wires

Definitions

  • the invention relates to a wire conductor for windings of electrical machines and devices, in particular transformers, which is composed of individual enamel-insulated partial conductors to form a rectangular cross-section, the individual conductors running obliquely on the two flat sides of the cross-section in the opposite sense and on the narrow sides of the cross-section through an offset pass from one side to the other and the superimposed partial conductors are arranged next to one another in cross-section, possibly at a distance.
  • Such stranded conductors are known.
  • the top and bottom conductors change from two adjacent stacks of individual conductors to the other stack, the individual conductors preferably being offset by half a step length.
  • a constant overall height is achieved with odd-numbered stranded conductors.
  • the insulation of the finished stranded conductors was mainly carried out using paper wrapping.
  • This twisted pair has the advantage over the conventional twisted pair that better cooling is achieved.
  • this wire conductor is not continuously wrapped with paper insulation, but has a large-mesh net tape as a covering.
  • the object of the invention is to provide a twisted pair conductor of the type cited at the outset which on the one hand avoids the above disadvantages and on the other hand takes into account the needs of the machine and device designers, and allows a higher utilization of the material while preferably reducing the overall height.
  • the twisted conductor according to the invention is characterized in that at least one spacer is arranged between two superimposed partial conductors of each partial conductor stack, the transverse channel of each partial conductor stack thus formed preferably being aligned with one another.
  • the calculator strives for a frequent subdivision of the copper cross-section and sets the step length of the wire conductor very short. This minimizes the stray field and additional losses.
  • the invention does not conflict with these requirements either.
  • the spacers are arranged at a distance from one another in a plane of the partial conductor stack.
  • several channels for the coolant passage will be provided. The cooling that can be achieved in this way is reflected in the advantages mentioned.
  • the spacers are arranged in at least two different levels of the partial conductor stack. Corresponding to the hot spots to be expected, which can be determined by calculation beforehand, the arrangement of such cooling channels is essential. According to a special embodiment of the invention, the spacers arranged in different levels of the partial conductor stack are provided one above the other. This ensures a continuous flow through the winding in the axial direction.
  • the spacers arranged in different planes of the partial conductor stack are provided offset.
  • an optimal coolant circulation is given.
  • the stranded conductor is covered with a large-mesh net tape. Since the twist conductor running off the machine is wound on a drum or a winding core, the net band prevents the spacers from falling out. In addition, the wire conductor is also better and easier to wind up.
  • the mesh band is a glass fabric bandage pre-impregnated with partially cross-linked epoxy resin. This ensures the cohesion of the conductor bundle and increases the mechanical stability of the stranded conductor after heat treatment.
  • the covering is only provided in the area of the crank or the spacers. The bulges that occur in paper insulation and that reduce the winding gap or the oil channel are thereby reliably avoided.
  • the spacers for attachment to the partial conductor are coated on at least one surface with epoxy resin or have a glass fiber fleece pre-impregnated with partially crosslinked epoxy resin. This ensures that the spacers adhere well to the conductor surface.
  • the invention is not limited to stranded conductors with partial conductors that have a rectangular cross section.
  • round wire stranded conductors or stranded conductors with laterally integrated spacers are also included.
  • FIG. 1 shows a drill conductor according to the invention in the diagram and FIG. 2 shows an elevation. 1 and 2, a stranded conductor 1 is shown, the partial conductors 2 consisting of flat wires being arranged one above the other. It is known per se that the stranded conductor consisting of flat wires consists of up to approximately 80 partial conductors.
  • the top and bottom subconductors 2 each change from the two partial conductor stacks to the other partial conductor stack, the partial conductors preferably being offset by half the step length. This deformation for the passage of the partial conductor 2 from one partial conductor stack into the other partial conductor stack is the offset 3. After the offset 3 of the partial conductors 2, they run obliquely.
  • At least one spacer 4 is arranged between two partial conductors 2 of each partial conductor stack arranged one above the other, the transverse channel 5 of each partial conductor stack formed in this way being aligned with one another.
  • the spacers 4 can be arranged in one plane or in different planes of the partial conductor stack. This results in a cooling channel 5 for a coolant passage. When using this stranded conductor in a transformer winding, a cooling channel is provided in the axial direction.
  • a sheath can be provided.
  • This wrapping can be a large-mesh glass fabric bandage pre-impregnated with partially crosslinked epoxy resin.
  • the cooling channels 5 are formed by inserting spacers 4 between the partial conductors 2.
  • Partial conductor stack introduced from one side.
  • the spacers 4 are aligned with each other, so that a good coolant passage is guaranteed.
  • the spacers 4 can be introduced with a device, which is preferably arranged after the drill head, similar to a loading device.
  • the spacers 4 consist in particular of plastic.

Landscapes

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

Abstract

L'invention concerne un faisceau de conducteurs torsadé conforme aux spécifications imposées par les constructeurs de machines et appareils, et permettant une exploitation plus efficace des matériaux par une réduction de la hauteur de l'équipement. Ledit faisceau de conducteurs torsadé (1) est constitué de conducteurs élémentaires plats (2) superposés. Il est connu en soi que le faisceau de conducteurs plats présente jusqu'à environ 80 conducteurs élémentaires. Dans le faisceau selon l'invention, au moins une pièce d'espacement (4) est prévue entre deux conducteurs élémentaires superposés (2) de chaque pile de conducteurs, le canal transversal (5) ainsi formé étant au même niveau que chaque pile de conducteurs. Les éléments d'espacement (4) peuvent être placés dans un ou plusieurs plans dans la pile de conducteurs élémentaires. Un canal de refroidissement (5) dans lequel un agent de refroidissement circule est ainsi formé. Lorsque ce faisceau de conducteurs torsadé est utilisé dans un enroulement de transformateur, un canal de refroidissement est prévu dans le sens axial. Le faisceau selon l'invention permet d'assurer un meilleur refroidissement dans le sens axial et d'augmenter la densité de courant de sorte que le volume de cuivre nécessaire pour l'enroulement soit réduit.
EP95909572A 1994-02-25 1995-02-23 Faisceau de conducteurs torsade pour enroulement de machines et appareils electriques Expired - Lifetime EP0746860B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0039894A AT403972B (de) 1994-02-25 1994-02-25 Drilleiter für wicklungen elektrischer maschinen und geräte
AT398/94 1994-02-25
PCT/AT1995/000038 WO1995023420A1 (fr) 1994-02-25 1995-02-23 Faisceau de conducteurs torsade pour enroulement de machines et appareils electriques

Publications (2)

Publication Number Publication Date
EP0746860A1 true EP0746860A1 (fr) 1996-12-11
EP0746860B1 EP0746860B1 (fr) 1998-04-22

Family

ID=3489559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95909572A Expired - Lifetime EP0746860B1 (fr) 1994-02-25 1995-02-23 Faisceau de conducteurs torsade pour enroulement de machines et appareils electriques

Country Status (4)

Country Link
EP (1) EP0746860B1 (fr)
AT (1) AT403972B (fr)
DE (1) DE59501990D1 (fr)
WO (1) WO1995023420A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7205875B2 (en) * 2003-06-26 2007-04-17 Eaton Power Quality Corporation Hybrid air/magnetic core inductor
CN1581380A (zh) * 2003-08-11 2005-02-16 尼克桑斯公司 玻璃纤维丝网状带换位导线及其制造和使用方法
EP3839987B1 (fr) * 2019-12-18 2024-04-17 Hitachi Energy Ltd Procédé et structure de conducteur pour fabriquer un enroulement électrique d'un appareil à induction électromagnétique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283280A (en) * 1964-12-22 1966-11-01 Westinghouse Electric Corp Transposition for electrical conductors
GB1242402A (en) * 1967-11-07 1971-08-11 Bruce Peebles Ind Ltd Cable for an electrical winding
DE2151961A1 (de) * 1971-10-19 1973-04-26 Ceag Dominit Ag Aus parallel gewickelten flachdraehten aufgebaute wicklung, insbesondere transformatorenwicklung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9523420A1 *

Also Published As

Publication number Publication date
ATA39894A (de) 1997-11-15
WO1995023420A1 (fr) 1995-08-31
AT403972B (de) 1998-07-27
DE59501990D1 (de) 1998-05-28
EP0746860B1 (fr) 1998-04-22

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