EP1315182B1 - Enroulement pour un transformateur ou une bobine - Google Patents

Enroulement pour un transformateur ou une bobine Download PDF

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Publication number
EP1315182B1
EP1315182B1 EP02024176A EP02024176A EP1315182B1 EP 1315182 B1 EP1315182 B1 EP 1315182B1 EP 02024176 A EP02024176 A EP 02024176A EP 02024176 A EP02024176 A EP 02024176A EP 1315182 B1 EP1315182 B1 EP 1315182B1
Authority
EP
European Patent Office
Prior art keywords
winding
layer
insulating material
electrical conductor
angle
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.)
Expired - Lifetime
Application number
EP02024176A
Other languages
German (de)
English (en)
Other versions
EP1315182A3 (fr
EP1315182A2 (fr
Inventor
Roland Hoffmann
Otto Meinolf
Benjamin Dipl.-Ing. Weber
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.)
ABB Technology AG
Original Assignee
ABB T&D Technology AG
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 ABB T&D Technology AG filed Critical ABB T&D Technology AG
Publication of EP1315182A2 publication Critical patent/EP1315182A2/fr
Publication of EP1315182A3 publication Critical patent/EP1315182A3/fr
Application granted granted Critical
Publication of EP1315182B1 publication Critical patent/EP1315182B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • 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
    • H01F27/2847—Sheets; Strips
    • 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
    • Y10T29/4902—Electromagnet, transformer or inductor

Definitions

  • the invention relates to a winding for a transformer or a coil with a band-shaped electrical conductor and with at least one band-shaped insulating material layer which is applied to the electrical conductor or laid as a band material on the conductor, which, namely the electrical conductor and the at least one band-shaped insulating material layer are wound into turns around a winding core along a winding axis.
  • the individual turns of the winding have a predetermined winding angle with respect to the winding axis of the winding core.
  • a plurality of axially adjacent turns form a layer and there are at least two radially adjacent layers of turns.
  • windings for transformers or coils from a power size of 5 kVA
  • the windings are usually wrapped closely adjacent to each other in the axial direction and thus formed a layer of turns.
  • several layers are joined radially together and form a multilayer transformer or a multilayer coil.
  • the winding direction of the electrical conductor of a layer must reverse at its axial end.
  • the reversal can take place at comparatively narrow widths of the electrical conductor in that the winding angle is changed continuously at the axial end of the respective layer to a value of 90 ° and finally, for. B. is transferred after a further half turn in the desired direction of winding.
  • the invention is characterized by a first layer of turns which is radially adjacent to a second layer which is producible by changing the winding direction by folding the electrical conductor and the at least one band-shaped insulating material layer, and that the total angle formed by the folding between the longitudinal direction of the band-shaped insulating material of the first layer and the corresponding direction of the second layer corresponds to twice the winding angle.
  • An essential advantage of the invention is that the change in the winding direction of the electrical conductor to produce a radially adjacent further layer, not as usual by slowly changing the winding direction, ie continuously, but by folding the electrical conductor. With folding here is a folding of the electrical conductor to one
  • the change in direction of the winding direction is discontinuous, without that in the lateral regions of the band-shaped electrical conductor such stresses in the longitudinal direction can occur, as they have occurred over a comparatively long longitudinal section of the electrical conductor so far. But this is also a wave formation and the tendency to buckling or warping avoided. This advantage is achievable in principle with each band-shaped conductor.
  • more than one insulating layer are wound together with the electrical conductor to windings, they can be arranged both on a broad side of the electrical conductor, as well as on the two broad sides.
  • the angle is designated as the characteristic winding angle, which is selected in dependence on the bandwidth of the electrical conductor and the diameter of the winding of the relevant layer so that it is ensured that the individual turns are arranged parallel to each other during the winding process and such unwanted mechanical stresses are avoided in the longitudinal direction of the electrical conductor safely.
  • a further advantageous embodiment of the winding according to the invention is characterized in that between the first layer and the second layer, an insulating layer is interposed. Also in this case, according to the invention, a wave or crack formation is favorably avoided and moreover achieves the advantage that between the individual layers voltage flashovers are avoided and also the surge voltage resistance of the layers is increased.
  • the winding is developed according to the invention, when the fold is arranged at one axial end of a layer.
  • the folding of the electrical conductor at each axial point is possible, for example, to produce radially adjacent layers, but which should have different axial lengths or two separate axially adjacent layers produce, which are arranged radially adjacent to another layer. Frequently, however, two adjacent layers should have the same axial length.
  • the fold can be arranged at the axial end of a layer. As a result, an optimal active axial length of a layer is achieved.
  • Fig. 1 is a two-layer winding of a transformer shown in fragmentary form.
  • the winding is wound around a winding core 10 having a winding axis 12.
  • the winding is formed from a band-shaped electrical conductor 14 which is coated with a band-shaped insulating material 16.
  • the band-shaped insulating material 16 may also consist of a band-shaped film.
  • the first layer 18 of turns should be designated that layer which is wound directly around the winding core 10. Between the first layer 18 and the winding core 10, an insulating layer 20 is arranged. The strip-shaped insulating material 16 is arranged on the side facing away from the insulating layer 20 of the electrical conductor 14. The individual turns of the first layer 18 are inclined by a certain angle 22 relative to the winding axis 12. Besides, each one is Winding arranged offset by a certain amount parallel to the direction of the winding axis 12 with respect to the previous turn, such that a next following turn has a partial overlap with the previous turn.
  • a second layer 24 of turns is wrapped radially about the first layer 18.
  • the layer structure of the second layer 24 substantially corresponds to the layer structure of the first layer 18, so that here, too, the electrical conductor 14 and the insulating material 16 in the form of an arrangement of turn to turn side by side with partial overlap is configured.
  • the overlap in the second ply 24 is selected so that an angle of incidence 26 of the second ply 24 is equal in magnitude to the particular angle 22, but with a negative angular orientation. That is, mathematically speaking, the angle of attack 26 corresponds to an angle of 180 ° minus the specific angle 22, provided that the winding axis 12 is regarded as a zero angle.
  • the Fig. 2 shows in a plan view of a section of a transformer core 30 with the core axis 32 and a conductor strip 34 with the bandwidth 46. It is only a single turn of the conductor strip 34 partially shown.
  • the direction in which the winding of the winding is to take place is indicated by an arrow 36.
  • Arrow 36 is also to be used to determine that layer which is to be wound around the transformer core 30 before a next following position in terms of time, and accordingly ends at the fold 38. With ends here only meant that this situation ends at this axial point.
  • a radially adjacent layer which is arranged further inwards around the transformer core 30, does not terminate at this axial point, but rather covers a longer axial region of the transformer core 30. In this case, care must be taken during winding to ensure that the current direction is correct and that the electromagnetic effect of the individual layers or turns does not cancel each other out.
  • the just described region of the conductor strip 34 has a winding angle 40 with the core axis 32.
  • the winding angle 40 should be the characteristic angle of this transformer core 30 in this example.
  • the characteristic angle is dependent on the bandwidth 46 of the conductor strip 34 as well as the diameter of the winding and thus directly dependent on the geometry of the transformer core 30. If the characteristic angle is chosen as the winding angle 40, it is ensured that each turn wound on the transformer core 30 is arranged parallel to its previous turn.
  • Typical belt widths 46 for a conductor band 34 are between 20 mm and 150 mm, while typical band thickness for the conductor band is about 0.1 mm to about 1 mm.
  • the pairings of bandwidth and tape thickness are not necessarily unique. Rather, a conductor strip with a bandwidth of 100 mm, depending on the stress, can be designed both with a strip thickness of 1 mm and with a strip thickness of 0.1 mm. Similarly, with a 20mm bandwidth, the tape thickness can be 0.1mm, 0.5mm or 1mm. It is also within the spirit of the invention to choose any other combination of widths and thicknesses. Even with other pairings, the advantages of the invention can be achieved.
  • the axial winding direction of the conductor strip 34 is to be changed. This is done by folding the electrical conductor strip 34 and an insulating film, which is associated with the conductor strip 34, but not shown in detail in this view. The folding takes place over the entire width of the conductor strip 34 along a straight line which is axially congruent with the dashed line 44.
  • the fold 38 has a folding angle of about 180 °, so that the originally radially outer side of the conductor strip 34 after folding the radially inner side, that is, the transformer core 30 facing side of the conductor strip 34.
  • the total angle 42 between the longitudinal direction of the conductor band 34 before the fold 38 and the longitudinal direction of the conductor band 34 after the fold 38 corresponds to exactly twice the winding angle 40.
  • the location of the fold 38 is therefore both end of a certain position, as well as the beginning of a next following Location of turns.
  • the change in the winding direction is in contrast to the usual windings, discontinuously at the folding site.
  • the folding 38 itself does not represent an impermissible material stress for the material of the conductor strip 34.

Claims (8)

  1. Enroulement pour un transformateur ou une bobine comprenant un conducteur électrique (14) en forme de bande et comprenant au moins une couche en matériau isolant (16) en forme de bande qui est appliquée sur le conducteur électrique (14) ou qui est déposée sur le conducteur sous la forme d'un matériau en bande, lesquels, à savoir le conducteur électrique (14) et l'au moins une couche en matériau isolant (16) en forme de bande, sont enroulés en spires autour d'un noyau d'enroulement (10) le long d'un axe d'enroulement (12), les spires individuelles de l'enroulement présentant un angle d'enroulement (40) prédéfini par rapport à l'axe d'enroulement (12) du noyau d'enroulement (10), plusieurs spires disposées les unes à côté des autres dans le sens axial formant une couche, et au moins deux couches (18, 24) de spires voisines dans le sens radial étant présentes, caractérisé en ce qu'une première couche (18) de spires est voisine dans le sens radial d'une deuxième couche (24), laquelle est produite par modification du sens de l'enroulement en repliant le conducteur électrique (14) et de l'au moins une couche en matériau isolant en forme de bande, et en ce que l'angle total (42) produit par le pliage (38) entre le sens longitudinal du matériau isolant (16) en forme de bande de la première couche (18) et la direction correspondante de la deuxième couche (24) correspond au double de l'angle d'enroulement (40).
  2. Enroulement selon la revendication 1, caractérisé en ce qu'une couche isolante (20) est insérée entre la première couche (18) et le noyau d'enroulement (10).
  3. Enroulement selon la revendication 1 ou 2, caractérisé en ce que le pliage (38) est disposé en une extrémité axiale (44) d'une couche (18, 24).
  4. Enroulement selon l'une des revendications précédentes, caractérisé en ce que l'angle d'enroulement (40) est l'angle d'enroulement caractéristique qui est choisi en fonction de la largeur de la bande (46) du conducteur électrique (14) et du diamètre des spires de la couche (18, 24) concernée.
  5. Enroulement selon l'une des revendications précédentes, caractérisé en ce que le pliage (38) présente un angle de pliage d'environ 180°.
  6. Enroulement selon l'une des revendications précédentes, caractérisé en ce que l'une des couches en matériau isolant (16) en forme de bande est introduite dans la zone intérieure du pliage (38), à proximité de la base du pliage, et en ce que cette couche en matériau isolant (16) est déposée depuis cet endroit sur le conducteur électrique (14) ou appliquée sur le conducteur sous la forme d'un matériau isolant (16) en forme de bande.
  7. Enroulement selon l'une des revendications précédentes, caractérisé en ce que l'angle d'enroulement caractéristique est inférieur à 85°.
  8. Enroulement selon l'une des revendications précédentes, caractérisé en ce que l'au moins une couche en matériau isolant (16) est pliée sur le pourtour d'une spire donnée à un autre endroit que le conducteur électrique (14).
EP02024176A 2001-11-23 2002-10-29 Enroulement pour un transformateur ou une bobine Expired - Lifetime EP1315182B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10157590A DE10157590A1 (de) 2001-11-23 2001-11-23 Wicklung für einen Transformator oder eine Spule
DE10157590 2001-11-23

Publications (3)

Publication Number Publication Date
EP1315182A2 EP1315182A2 (fr) 2003-05-28
EP1315182A3 EP1315182A3 (fr) 2004-12-01
EP1315182B1 true EP1315182B1 (fr) 2012-04-11

Family

ID=7706776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02024176A Expired - Lifetime EP1315182B1 (fr) 2001-11-23 2002-10-29 Enroulement pour un transformateur ou une bobine

Country Status (7)

Country Link
US (1) US6778060B2 (fr)
EP (1) EP1315182B1 (fr)
KR (1) KR100981380B1 (fr)
CN (1) CN1280846C (fr)
AT (1) ATE553488T1 (fr)
CA (1) CA2412346C (fr)
DE (1) DE10157590A1 (fr)

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* Cited by examiner, † Cited by third party
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DE10157590A1 (de) * 2001-11-23 2003-06-05 Abb T & D Tech Ltd Wicklung für einen Transformator oder eine Spule
CN101055797B (zh) * 2007-02-16 2011-06-29 深圳市浦天利光电技术有限公司 一种变压器绕组的制作方法、变压器绕组及变压器
DE102008007676A1 (de) * 2008-02-07 2009-08-13 Abb Technology Ag Verfahren zur Herstellung eines Wicklungsblockes für eine Spule eines Transformators und damit hergestellter Wicklungsblock
DE102008033123A1 (de) * 2008-07-15 2010-01-21 Abb Ag Wicklung für einen Transformator
JP4881450B2 (ja) * 2010-02-17 2012-02-22 株式会社東芝 電子機器および車両
CN102360807A (zh) * 2011-10-15 2012-02-22 中山普润斯电源设备技术有限公司 变压器
US10903653B2 (en) 2015-12-08 2021-01-26 Smart Wires Inc. Voltage agnostic power reactor
US10418814B2 (en) 2015-12-08 2019-09-17 Smart Wires Inc. Transformers with multi-turn primary windings for dynamic power flow control
US10180696B2 (en) 2015-12-08 2019-01-15 Smart Wires Inc. Distributed impedance injection module for mitigation of the Ferranti effect
US10008317B2 (en) 2015-12-08 2018-06-26 Smart Wires Inc. Voltage or impedance-injection method using transformers with multiple secondary windings for dynamic power flow control
US10199150B2 (en) 2015-12-10 2019-02-05 Smart Wires Inc. Power transmission tower mounted series injection transformer
US10097037B2 (en) 2016-02-11 2018-10-09 Smart Wires Inc. System and method for distributed grid control with sub-cyclic local response capability
US10218175B2 (en) 2016-02-11 2019-02-26 Smart Wires Inc. Dynamic and integrated control of total power system using distributed impedance injection modules and actuator devices within and at the edge of the power grid
US10651633B2 (en) 2016-04-22 2020-05-12 Smart Wires Inc. Modular, space-efficient structures mounting multiple electrical devices
US10468880B2 (en) 2016-11-15 2019-11-05 Smart Wires Inc. Systems and methods for voltage regulation using split-conductors with loop current reduction
US10666038B2 (en) 2017-06-30 2020-05-26 Smart Wires Inc. Modular FACTS devices with external fault current protection
CN111525760B (zh) * 2020-06-03 2022-04-05 北京萃丰资本投资有限公司 电机绕组线圈的绕制工艺和电机绕组线圈
CN111555571B (zh) * 2020-06-03 2021-08-27 北京萃丰资本投资有限公司 一种电机绕组线圈的绕制方法

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Also Published As

Publication number Publication date
US20030098768A1 (en) 2003-05-29
US6778060B2 (en) 2004-08-17
CA2412346A1 (fr) 2003-05-23
CN1280846C (zh) 2006-10-18
KR20030043653A (ko) 2003-06-02
CA2412346C (fr) 2011-02-08
CN1459806A (zh) 2003-12-03
EP1315182A3 (fr) 2004-12-01
ATE553488T1 (de) 2012-04-15
EP1315182A2 (fr) 2003-05-28
DE10157590A1 (de) 2003-06-05
KR100981380B1 (ko) 2010-09-10

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