EP2426680A1 - Gekühlter Transformator mit mindestens einer Bandwicklung - Google Patents

Gekühlter Transformator mit mindestens einer Bandwicklung Download PDF

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Publication number
EP2426680A1
EP2426680A1 EP10009063A EP10009063A EP2426680A1 EP 2426680 A1 EP2426680 A1 EP 2426680A1 EP 10009063 A EP10009063 A EP 10009063A EP 10009063 A EP10009063 A EP 10009063A EP 2426680 A1 EP2426680 A1 EP 2426680A1
Authority
EP
European Patent Office
Prior art keywords
winding
modules
cooling channel
tape
voltage
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.)
Withdrawn
Application number
EP10009063A
Other languages
German (de)
English (en)
French (fr)
Inventor
Marcos Dr. Bockholt
Frank Cornelius
Burak Esenlik
Bhavesh Patel
Jens Dr. Tepper
Benjamin 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 Schweiz AG
Original Assignee
ABB 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 Technology AG filed Critical ABB Technology AG
Priority to EP10009063A priority Critical patent/EP2426680A1/de
Priority to CN2011800423481A priority patent/CN103168331A/zh
Priority to PCT/EP2011/003569 priority patent/WO2012028222A1/de
Publication of EP2426680A1 publication Critical patent/EP2426680A1/de
Withdrawn legal-status Critical Current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
    • H01F27/2847—Sheets; Strips
    • 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
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air
    • 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
    • H01F27/2852—Construction of conductive connections, of leads
    • 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
    • H01F27/2876—Cooling

Definitions

  • the invention relates to a belt winding for a transformer comprising a plurality of winding modules each having a wound around a winding tape conductor, wherein at least two radially adjacent winding modules, a winding segment is formed, wherein between at least two radially adjacent winding modules at least one extending in the axial direction of the cooling channel is provided wherein at least two axially adjacent winding segments are provided, and wherein the winding modules are electrically connected in series by connecting conductors.
  • coil windings are often used as windings for dry type transformers, for example in the power range from a few 100kW to 10MW and above, on the low side.
  • Tape windings offer the advantage of being able to conduct correspondingly high currents at a secondary voltage rather low of a few kV, whereby, for example, the effect of current displacement due to the flat conductor structure is advantageously reduced here.
  • the conductor current is correspondingly lower, so that here turns out to be useful a winding of a round or rectangular conductor.
  • Low and high voltage winding are usually made on the same bobbin, for reasons of isolation, the low-voltage winding is arranged radially inward and the high-voltage winding radially outward.
  • Winding conductors for strip winding usually have a rectangular cross-section, wherein the winding itself is similar to a roll.
  • a tape winding in the radial direction is divided into a plurality of hollow cylindrical sections or modules, wherein between two radially adjacent modules, a mostly also hollow cylindrical cooling channel is formed, which in turn is formed depending on the embodiment of a plurality of tube-like smaller channels.
  • tape windings it is not uncommon for tape windings to be formed in both the axial and radial directions from adjacent winding modules which are to be connected in series to achieve the desired electrical functionality. It is important to pay attention to the correct winding sense of the winding modules, so that a voltage induced in the individual modules not mutually - not partially - compensated.
  • the basic idea of the invention is to use the space available in the interior of the cooling channel for the arrangement of connecting conductors of the band winding.
  • Connecting conductors are usually rod-shaped, so that the cooling effect is - if anything - only slightly affected.
  • the connecting conductors can be introduced in an advantageous manner in the manufacture of the cooling channels of the winding in this.
  • a coil production would then typically comprise first the winding of the radially innermost modules, which is then followed by the introduction of the cooling channel, wherein, if necessary, at least one of the winding ends of the radially innermost winding modules through at least a portion of the cooling channel by means of the connecting conductors to one of the end faces of the winding to be produced to be led.
  • the radially next following winding modules are then to be wound, wherein likewise, if necessary, a conductor end can be guided by means of a provided in the cooling channel connecting conductor to one of the two end sides.
  • an elongated discharge rail is provided as a connecting conductor routed through the cooling channel.
  • Aus effetsschienen have at least at one of their ends good connection options to other Aus effetsschienen, as frontally required for the connection of the individual winding modules. It is also at Aus effetsschienen to commercially available components which require no additional design effort and which are of their diameter, for example, a few centimeters, to accommodate well in a cooling channel.
  • At least two connecting conductors are electrically connected to one end face or end face of the band winding. Subsequent connection of the winding segments after completion of the winding of all required winding segments including a possible high-voltage winding for reasons of accessibility on one of the end sides of the winding is particularly advantageous.
  • a strip winding according to the invention also apply correspondingly to a transformer, comprising a transformer core, at least one tape winding according to one of claims 1 - 3 as a low-voltage winding and at least one further galvanically isolated winding as a high-voltage winding.
  • a transformer comprising a transformer core, at least one tape winding according to one of claims 1 - 3 as a low-voltage winding and at least one further galvanically isolated winding as a high-voltage winding.
  • this allows both a reduced design of the entire transformer as well as a simplified assembly.
  • such a transformer is preferably constructed in three phases, thus has a total of three upper voltage and three lower voltage windings, which are galvanically separated from each other.
  • Fig. 1 shows a section 10 through a first exemplary tape winding, which extends approximately rotationally symmetrical about a winding axis 16.
  • the tape winding has two winding segments, wherein the first winding segment of two radially adjacent winding modules 12 and the second winding segment of two radially along the axis indicated by the reference numeral 20 axis adjacent winding segments 14 is formed.
  • the winding segments 12, 14 are each indicated in its cross section as a rectangle, wherein the winding segment 14 shown in the left bottom left is still shown in several winding layers 18 of a strip conductor.
  • Each winding layer is surrounded by an insulating layer so as to be able to isolate a voltage difference at least to the adjacent winding layer.
  • each winding segment 12, 14 has an approximately hollow cylindrical configuration.
  • a cooling channel extending over the entire axial length of the winding, which, for example, can be made predominantly of an insulating plastic material and which is indicated by the reference arrow 22.
  • a cooling channel may for example be made of shell segments, which result in a composite form two nested hollow cylinder, wherein the actual cooling channel is formed by the enclosed by the hollow cylinders interior.
  • the hollow cylinders are to be spaced from each other with suitable preferably oriented in the axial direction elements, for example by webs.
  • Two of the electrical connections of the winding modules 14 of the second winding segment are guided via connecting conductor 26 to save space in the interior of the cooling channel 22 to the upper end side of the tape winding.
  • connection points 24 for example by means of a screw connection, electrically connected to terminals of the winding modules 12 of the first winding segment.
  • connection points 24 for example by means of a screw connection, electrically connected to terminals of the winding modules 12 of the first winding segment.
  • the respective other electrical connections of the two Winding modules 14 are connected to each other at the opposite end side with a connecting conductor 28, so that all four winding modules are electrically connected in series.
  • stray channel 32 Radially outside a high-voltage winding 30 is indicated, which is arranged by a stray channel 32 spaced around the radially outer winding modules. If required, the stray channel 32 is likewise suitable for conducting connecting conductor 26, at least in sections, to one of the two end faces of the winding.
  • Fig. 2 shows a plan view 40 on second exemplary tape winding.
  • the hollow cylindrical shape of arranged around a rotation axis 42 winding modules 44, 48 clearly, between which a likewise hollow cylindrical cooling channel 48 is indicated.
  • the reference numerals 50, 52 indicate two rod-like connecting conductors with a square cross-section. With these an electrical connection of - in this Fig. Not recognizable - axially adjacent winding modules allows.
  • Fig. 3 shows a section 60 through a third exemplary tape winding. This is structurally the in Fig. 1 shown very similar, however, a total of eight winding modules 64 are provided in two winding segments, wherein a total of three cooling channels 62 are formed. However, a guide of connecting conductors is necessary in this example only in the radially inner and in the radially outer cooling channel. A high-voltage winding is not shown, but to be considered as radially outside available.
  • Fig. 4 shows a section 70 through a fourth exemplary tape winding, in which a total of six winding modules are provided in three winding segments.
  • the electrical connection of the axially middle winding segment takes place at connection points, which are partially not on one of the end faces. This requires additional attention in the sequence of the winding process of the respective winding modules, which is thereby somewhat more complex.
  • Fig. 5 shows a further variant according to the invention in the form of a section 80 through a fifth exemplary belt winding, this time with six winding modules, two winding segments and two cooling channels.
  • Fig. 6 shows a side view 90 on three-phase transformer with tape winding.
  • There are a total of three common bobbins 96, 98, 100 are provided, which in each case radially inwardly lying underneath a band-side tape winding and radially outboard have a top-side round or rectangular material winding, which does not emerge from this illustration.
  • Each of the three bobbins is disposed along a respective winding axis 92 about a respective leg of a three-phase transformer core 94.
  • the inventive arrangement of connecting conductors in cooling channels - both in the figure not indicated - decreases the size of the transformer or is at the same size increased power rating possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP10009063A 2010-09-01 2010-09-01 Gekühlter Transformator mit mindestens einer Bandwicklung Withdrawn EP2426680A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP10009063A EP2426680A1 (de) 2010-09-01 2010-09-01 Gekühlter Transformator mit mindestens einer Bandwicklung
CN2011800423481A CN103168331A (zh) 2010-09-01 2011-07-18 具有至少一个带状线圈的可冷却的变压器
PCT/EP2011/003569 WO2012028222A1 (de) 2010-09-01 2011-07-18 Gekühlter transformator mit mindestens einem bandwicklung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10009063A EP2426680A1 (de) 2010-09-01 2010-09-01 Gekühlter Transformator mit mindestens einer Bandwicklung

Publications (1)

Publication Number Publication Date
EP2426680A1 true EP2426680A1 (de) 2012-03-07

Family

ID=43585670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10009063A Withdrawn EP2426680A1 (de) 2010-09-01 2010-09-01 Gekühlter Transformator mit mindestens einer Bandwicklung

Country Status (3)

Country Link
EP (1) EP2426680A1 (zh)
CN (1) CN103168331A (zh)
WO (1) WO2012028222A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017223316A1 (de) 2017-12-20 2019-06-27 Siemens Aktiengesellschaft Wicklungsanordnung
CN108878116B (zh) * 2018-06-29 2020-08-18 常德国力变压器有限公司 一种铁路变压器绕组的出线方法及连线方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB790721A (en) * 1955-02-09 1958-02-12 Reynolds Metals Co Aluminium strip suitable for use in electromagnetic windings and method of manufacturing same
GB854564A (en) * 1958-01-15 1960-11-23 Gen Electric Improvements in coil structure for electrical apparatus
DE7126814U (de) * 1971-07-13 1972-03-16 Transformatoren Union Ag Wicklung fuer transformatoren drosselspulen und dgl.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649502A (en) * 1979-09-07 1981-05-06 Mitsubishi Electric Corp Cooling device of transformer
DE102005015785A1 (de) * 2005-04-01 2006-11-16 Siemens Ag Transformator mit elektrischer Abschirmung
US7719397B2 (en) * 2006-07-27 2010-05-18 Abb Technology Ag Disc wound transformer with improved cooling and impulse voltage distribution

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB790721A (en) * 1955-02-09 1958-02-12 Reynolds Metals Co Aluminium strip suitable for use in electromagnetic windings and method of manufacturing same
GB854564A (en) * 1958-01-15 1960-11-23 Gen Electric Improvements in coil structure for electrical apparatus
DE7126814U (de) * 1971-07-13 1972-03-16 Transformatoren Union Ag Wicklung fuer transformatoren drosselspulen und dgl.

Also Published As

Publication number Publication date
CN103168331A (zh) 2013-06-19
WO2012028222A1 (de) 2012-03-08

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