EP0216249B1 - Enroulement à haute tension fait de paires de bobines en disque disposées les unes sur les autres axialement - Google Patents

Enroulement à haute tension fait de paires de bobines en disque disposées les unes sur les autres axialement Download PDF

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Publication number
EP0216249B1
EP0216249B1 EP86112505A EP86112505A EP0216249B1 EP 0216249 B1 EP0216249 B1 EP 0216249B1 EP 86112505 A EP86112505 A EP 86112505A EP 86112505 A EP86112505 A EP 86112505A EP 0216249 B1 EP0216249 B1 EP 0216249B1
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EP
European Patent Office
Prior art keywords
disc
conductors
coil
conductor
disc coil
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
Application number
EP86112505A
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German (de)
English (en)
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EP0216249A1 (fr
Inventor
Walter Dr. Dipl.-Ing. Müller
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Siemens AG
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Siemens AG
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Publication date
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Application filed by Siemens AG filed Critical Siemens AG
Priority to AT86112505T priority Critical patent/ATE42860T1/de
Publication of EP0216249A1 publication Critical patent/EP0216249A1/fr
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    • 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

Definitions

  • the invention relates to high-voltage windings from axially one above the other, in pairs electrically connected to disc coil pairs disc coils_from two spatially parallel conductors, through which the same current flows through each other in the same direction by electrical series connection in each of the disc coil pairs, whereby within the electrical series connection of each disc coil pair on the first conductor The first disc coil is followed by the first conductor in the second disc coil and then via a back connection the second conductor in the first disc coil and finally the second conductor in the second disc coil.
  • Such a winding arrangement is known from DE-C 975 856.
  • the conductors When the individual conductors are connected within the disc coils, the conductors require a relatively strong paper insulation because this must be applied for a voltage that is equal to the product of the winding voltage and the number of turns contained in three disc coils. With increasing loss evaluation, it becomes necessary to subdivide the conductor cross sections into partial conductors in order to reduce the eddy current losses in the stray field. At the same time, if possible, the filling factor of the winding should be increased in order to achieve a larger overall cross section and thus a reduction in the 1 2 R losses with constant external dimensions of the winding.
  • the invention is therefore based on the object of providing a high-voltage winding of the type mentioned at the outset, which, even with very large cross sections of the conductors designed for very large currents, has a longitudinal capacitance which is also sufficiently high for loading with surge voltages.
  • the conductor with the higher potential within a disk coil can lie axially on the same side in the disk coils of the same disk coil pair and on axially opposite sides in the disk coils of adjacent disk coil pairs.
  • the individual conductors in the individual bundle conductors are not twisted and the disc coils combined to form a pair of disc coils lie directly against one another, without a cooling and insulating channel, the individual conductors of the bundle conductors being crossed out in relation to one another between the disc coils of the same pair of disc coils.
  • the individual conductors within the bundle conductors are additionally crossed out in cooling and insulating channels between adjacent pairs of disk coils.
  • each of the bundle conductors is constructed from a single stack of wires lying flat on top of one another with a rectangular cross-section, and that the radial dimension of the bundle conductor is greater than its axial dimension within the disc coils.
  • the maximum potential difference between axially adjacent turns both within the individual disk coils and with respect to the adjacent turns in adjacent disk coils is equal to the product of the winding voltage and the number of turns per disk coil. In many applications, it is sufficient to restrict the arrangement of the interwoven disk coil pairs to the high-voltage input region of the winding.
  • High-voltage coils constructed in accordance with the invention are very advantageous because the radial bundle dimensions can be of practically any size, so that the longitudinal capacitance determined thereby is also sufficiently large, and because the maximum voltage stress in the winding assembly is only the product of the winding tension and the number of turns in a single disk coil occurs so that radial channels are not required for electrical reasons.
  • a laminated iron core (not shown) and an undervoltage winding of any type, also not shown, and a high-voltage winding consisting of pairs of disk coils 101 to 106 are arranged concentrically with respect to one another from the inside outward about an axis 100 of a transformer leg.
  • the disk coil pairs 101 to 106 represent the high-voltage input coils with turns 1 to 96, through which the load current flows in the order of the numbers entered.
  • Each of the disk coil pairs 101 to 106 consists of two disk coils, each with eight turns of a conductor 107 in the exemplary embodiment.
  • the dimension of the conductor 107 is significantly larger in the radial direction than in the axial direction.
  • the conductor 107 is constructed as a bundle conductor from ten, preferably enamel-insulated, individual conductors 108 which have a rectangular cross section and lie flat on top of one another.
  • the individual conductors 108 are held together in a bundle by an insulating skin 109 made of paper or another insulating material, the thickness of the insulating skin 109 being determined by the product of the winding tension and the number of turns in a disk coil.
  • Each of the disk coils is wound from two spatially parallel, axially adjacent conductors 107, each of which approximately forms a spiral with four turns in the exemplary embodiment, i.e. each of the disc coils consists of two identical spirals lying axially against one another, the spirals of the same disc coil having the same winding spirals and spirals of adjacent disc coils having opposite winding directions.
  • Two adjacent disc coils are connected together to form one of the disc coil pairs 101 to 106.
  • the spirals formed by the conductors 107 are electrically connected in series so that the windings flow through the current in the order of the numbers entered.
  • the first spiral of the first disk coil is first from the outside inwards as a result of this series connection, then the first spiral of the second disk coil from the inside to the outside, and then the second coil of the first disk coil is connected again from the outside inwards via a reverse connection and finally the current flows through the second spiral of the second disc coil from the inside to the outside.
  • each of the individual conductors 108 are crossed out in the usual way in the back connection between the two disc coils forming a pair of disc coils 101 to 106. If necessary, further outcrossings are provided in the connections of adjacent disk coil pairs 101 to 106.
  • the spiral lying axially in the direction of a high-voltage connection 110 has the higher voltage potential compared to the other spiral of the same disc coil.
  • the reverse is true.
  • the conditions in the disk coil pair 103 are again the same as in the disk coil pair 101.
  • there is a maximum of a voltage between two axially adjacent turns corresponding to the product of the winding voltage and the number of turns of a disk coil in the exemplary embodiment thus a maximum of eight times the winding voltage.
  • the thickness of the insulating skin 109 is also small.
  • the large-area, radially directed broad sides of the conductors 107 lie next to one another with a small spacing and thus contribute significantly to the formation of a good longitudinal capacitance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Details Of Television Scanning (AREA)
  • Windings For Motors And Generators (AREA)

Claims (10)

1. Enroulement haute tension constitué de bobines sous forme de galettes qui sont superposées axialement et sont électriquement connectées ensemble par paires (101 à 106), chaque galette étant formée de deux conducteurs (107) disposées en parallèle dans l'espace et parcourus l'un après l'autre dans le même sens par le même courant dans chacune des paires de galettes (101 à 106) par suite de leur montage électrique en série, l'agencement étant tel que, dans le montage en série des conducteurs, le premier conducteur de la première galette de chaque paire (101 à 106) est suivi par le premier conducteur de la seconde galette, lui-même rélié par une connexion de retour au second conducteur dans la première galette, lequel est suivi, enfin, par le second conducteur de la seconde galette, caractérisé en ce
- que les conducteurs (107) disposés en parallèles dans l'espace et enroulés dans la même galette, s'appliquent directement l'un contre l'autre dans le sens axial,
- que chacun de ces conducteurs (107) est lui-même un conducteur en faisceau et
- que chacun de ces conducteurs (107) est lui-même un conducteur en faisceau et
- que l'ordre de succession des conducteurs axialement adjacents, ordre qui est fixé par les connexions entre les bobines sur la périphérie intérieure et extérieure, est tel que les conducteurs radialement adjacents présentent seulement la tension par spire comme tension différentielle et que les conducteurs axialement adjacents présentent seulement la moitié de la tension d'une paire de galettes complète comme tension différentielle.
2. Enroulement selon la revendication 1, caractérisé en ce que, parmi les deux conducteurs (107) en parallèle dans l'espace, celui présentant le potentiel le plus élevé dans une galette, est situé axialement du même côté dans les galettes d'une même paire (101 à 106) et est situé axialement sur des côtés opposés dans les galettes de paires (101 à 106) voisines.
3. Enroulement selon la revendications 1 ou 2, caractérisé en ce que les conducteurs élémentaires (108) dans les différents conducteurs en faisceau ne sont pas torsadés.
4. Enroulement selon une des revendications 1 à 3, caractérisé en ce que, au moins, les galettes réunies en une paire de galettes (101 à 106) s'appliquent directement l'une contre l'autre, sans canal de refroidissement et d'isolement intermédiaire.
5. Enroulement selon une des revendications 1 à 4, caractérisé en ce que les conducteurs élémentaires des conducteurs en faisceau sont mutuellement intervertis par croisement dans la connexion de retour entre les galettes de la même paire (101 à 106).
6. Enroulement selon une des revendications 1 à 5, caractérisé en ce que les conducteurs élémentaires à l'intérieur des conducteurs en faisceau sont en outre intervertis mutuellement, par croisement, dans des canaux de refroidissement et d'isolement entre des paires de galettes (101 à 106) voisines.
7. Enroulement selon une des revendications 1 à 6, caractérisé en ce que chacun des conducteurs en faisceau est formé d'un empilage unique de conducteurs élémentaires (108) sous forme de fils de section droite rectangulaire qui sont appliqués à plat les uns contre les autres.
8. Enroulement selon une des revendications 1 à 7, caractérisé en ce que, à l'intérieur des galettes, la dimension radiale du conducteur en faisceau est plus grande que sa dimension axiale.
9. Enroulement selon une des revendications 1 à 8, caractérisé en ce que la différence de potentiel maximale entre des spires axialement adjacentes, tant à l'intérieur des différentes galettes que par rapport à des spires voisines dans des galettes voisines, est égale au produit de la tension par spire et le nombre de spires par galette.
10. Enroulement selon une des revendications 1 à 9, caractérisé en ce que la disposition des paires de galettes (101 à 106) à enroulement imbriqué est limitée à la zone d'entrée côté haute tension d'un enroulement principal haute tension.
EP86112505A 1985-09-23 1986-09-10 Enroulement à haute tension fait de paires de bobines en disque disposées les unes sur les autres axialement Expired EP0216249B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86112505T ATE42860T1 (de) 1985-09-23 1986-09-10 Hochspannungswicklung aus axial uebereinander angeordneten scheibenspulenpaaren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3533919 1985-09-23
DE3533919 1985-09-23

Publications (2)

Publication Number Publication Date
EP0216249A1 EP0216249A1 (fr) 1987-04-01
EP0216249B1 true EP0216249B1 (fr) 1989-05-03

Family

ID=6281723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112505A Expired EP0216249B1 (fr) 1985-09-23 1986-09-10 Enroulement à haute tension fait de paires de bobines en disque disposées les unes sur les autres axialement

Country Status (4)

Country Link
EP (1) EP0216249B1 (fr)
AT (1) ATE42860T1 (fr)
BR (1) BR8604515A (fr)
DE (1) DE3663209D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8802882A (nl) * 1988-11-22 1990-06-18 Smit Transformatoren Bv Van axiale kanalen voorziene, als schijvenwikkeling uitgevoerde transformatorwikkeling.
GB2243248B (en) * 1990-03-30 1994-10-26 Honda Motor Co Ltd Welding transformer and method of manufacturing same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975856C (de) * 1945-01-04 1962-10-31 English Electric Co Ltd Wicklungsanordnung mit Scheibenwicklungen, insbesondere fuer Transformatoren
CH395310A (de) * 1961-08-11 1965-07-15 Smit & Willem & Co Nv Scheibenspule für eine Transformator- oder Drosselspulewicklung für grosse Stromstärken
DE2429441C3 (de) * 1974-06-19 1979-05-03 Transformatoren Union Ag, 7000 Stuttgart Wicklung für Transformatoren und Drosseln

Also Published As

Publication number Publication date
BR8604515A (pt) 1987-05-19
EP0216249A1 (fr) 1987-04-01
ATE42860T1 (de) 1989-05-15
DE3663209D1 (en) 1989-06-08

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