EP0151366B1 - Enroulement à haute tension d'un transformateur de tension inductif - Google Patents

Enroulement à haute tension d'un transformateur de tension inductif Download PDF

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Publication number
EP0151366B1
EP0151366B1 EP84730134A EP84730134A EP0151366B1 EP 0151366 B1 EP0151366 B1 EP 0151366B1 EP 84730134 A EP84730134 A EP 84730134A EP 84730134 A EP84730134 A EP 84730134A EP 0151366 B1 EP0151366 B1 EP 0151366B1
Authority
EP
European Patent Office
Prior art keywords
winding
sub
windings
high voltage
contact
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
EP84730134A
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German (de)
English (en)
Other versions
EP0151366A1 (fr
Inventor
Werner Keil
Klaus-Dieter Dipl.-Ing. Kersten
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to AT84730134T priority Critical patent/ATE28371T1/de
Publication of EP0151366A1 publication Critical patent/EP0151366A1/fr
Application granted granted Critical
Publication of EP0151366B1 publication Critical patent/EP0151366B1/fr
Expired legal-status Critical Current

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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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material

Definitions

  • the invention relates to a high-voltage winding of an inductive voltage converter with at least two partial windings which coaxially surround one another and an intermediate electrode lying between the partial windings, which protrudes laterally from the high-voltage winding with edge regions present on both sides of a central region located within the high-voltage winding.
  • the intermediate electrode consists of a wrapped metal sheet, for example made of copper or a copper alloy.
  • the intermediate electrode serves as a winding body for the outer partial winding comprising an (inner) partial winding.
  • the invention has for its object to provide a high-voltage winding, which is characterized by a particularly stable and vibration-resistant winding structure.
  • the intermediate electrode in a high-voltage winding of the type specified at the outset, consists of two metal, half-ring-shaped shell parts which have holes in the central region; the shell parts enclose one (inner) partial winding with the release of two gaps and are pressed against the first partial winding by the wound up further (outer) partial winding, and one of the two gaps is bridged by means of a contact element.
  • a major advantage of the high-voltage winding according to the invention is that, due to the use of an intermediate electrode with holes in its central region, a stable and vibration-resistant winding structure is achieved because the shell parts are to a certain extent under the pressure of the wound outer part winding with their holes in the outer insulation of the inner part winding hook, so that the intermediate electrode with the outer partial winding wound on it is neither laterally nor circumferentially displaceable with respect to the inner partial winding.
  • This interlocking of the intermediate electrode is made possible by the fact that it consists of two half-ring-shaped shell parts with a dimensioning such that it encompasses the inner partial winding while leaving two gaps free and can thus be pressed against the inner partial winding unhindered by the outer partial winding.
  • the contact element which bridges one of the gaps, ensures that the entire intermediate electrode is at the same intermediate potential, a short-circuit turn being prevented in a known manner by means of the second, not bridged gap.
  • the invention is applicable not only to a high-voltage winding with two partial windings coaxially comprising one another, but also to high-voltage windings which consist of more than two partial windings; the intermediate electrode between the respectively adjacent partial windings is then to be designed in the manner as stated above, and its dimensioning to achieve the gaps and the use of a contact element must also be carried out in a corresponding manner.
  • the high-voltage winding according to the invention with at least two partial windings designed as layer windings is particularly advantageous if the shell parts in the central region have an annular, bead-like indentation with a width corresponding to the width of the winding layers of the partial windings designed as rectangular windings, and if each partial winding has foils bearing thermoplastic lacquer between its winding layers , whose width is greater than the width of the winding layers and which are pinnated on their sides protruding from the winding layers, the protruding sides being overlapped outwards and the foils being glued to the winding layers and glued to one another due to the action of heat on the lacquer layer.
  • Such a high-voltage winding has the advantage that it is particularly stable and vibration-proof, since it not only has a fixed winding structure with regard to each partial winding due to the use of thermoplastic lacquer-carrying foils and the effect of heat, but also due to the use of shell parts with a bead-like indentation in the Central area ensures a firm support of the intermediate electrode and thus the outer partial winding applied to it on the inner partial winding. Even high stresses on the winding in the direction parallel to the axis therefore do not lead to destruction of the winding structure.
  • a layer winding with foils carrying thermoplastic lacquer, which are glued to the winding layers and to one another due to the action of heat on the lacquer layers, is known per se from DE-U-8 127 860.
  • the contact element can be designed in different ways. It is considered to be advantageous if the contact element contains a first contact strip lying on the inside of the shell parts, which is connected to the outer end of the inner partial winding, and has a second contact strip, lying on the outside of the shell parts, which is connected to the inner end of the outer part winding and when the contact strips are connected to one another in the region of the bridged gap.
  • the contact element is one in which two initially separate contact strips are used, then these are advantageously connected to one another by welding in the region of the bridged gap.
  • the contact strips advantageously consist of a single contact strip which is guided through the gap; the first contact strip is bent in a meandering manner in the area of one shell part and the second contact strip is bent in a meandering shape in the area of the other shell part.
  • the contact strips in the area of their connection points with the ends of the partial windings have transversely extending fastening lugs, each of which is fixed in the edge region of the partial windings by means of the foils and can be wrapped around the foils with each other.
  • a high-voltage winding 1 consists of an inner partial winding 2 and an outer partial winding 3; both partial windings 2 and 3 are designed as a layer winding, specifically as a rectangular winding.
  • Each partial winding 2 or 3 is made as described in detail in DE-U-8 127 860.
  • a plastic film 5 with a thermoplastic lacquer layer which is pinnate at its edges, is used as the insulating material web between the winding layers 4 with the same width. These plastic films 5 are located between the individual winding layers 4.
  • the partial winding 2 is applied to a straight-cylindrical bobbin 7.
  • the inner partial winding 2 is surrounded by an intermediate electrode 9, which has an annular, bead-like indentation 11 in its central region 10, as a result of which the intermediate electrode 9 lies in the inner partial winding 2 in a form-fitting manner after the entire high-voltage winding has been completed (as will be explained below).
  • each metal, semi-ring-shaped shell part 12 or 13 of the intermediate electrode 9 has holes 14 in its central region 10.
  • each intermediate electrode 9 is provided with edge regions 16 and 17, which are widened in a trumpet shape at their outer ends to reduce field concentrations.
  • the half-ring-shaped shell parts 12 and 13 of the intermediate electrode 9 are dimensioned such that after they have been applied to the inner partial winding 2 they form two gaps, of which a gap 18 can be seen in FIG.
  • the outer partial winding 3 is applied to the central region 10 of the intermediate electrode 9.
  • the outer partial winding is constructed in the same manner as has already been described in detail in connection with the explanation of the structure of the inner partial winding 2.
  • the intermediate electrode 9 After the entire high-voltage winding 1 with the intermediate electrode 9 has been produced, the latter is subjected to a heat treatment, the feathered edges of the plastic films 5 sticking to the outer turns of the winding layers 4 and to the respectively adjacent edges of the plastic films 5 due to the thermoplastic change in the heat. whereby a solid structure of the layer winding is guaranteed even without a lateral limiting part of the coil body even with larger loads on the layer winding.
  • the individual sub-windings 2 and 3 bake firmly together, and at the same time there is an intimate connection of the central region 10 of the intermediate electrode 9 with the two sub-windings 2 and 3 due to the bead-like indentation 11 and the holes 14, so that the high-voltage winding 1 is very stable and is very vibration-proof. This property results among other things. This is because the partial windings 2 and 3 contract more in the central area than outside when exposed to heat, so that protruding edges 19 and 20 are formed which hold the intermediate electrode 9.
  • the high-voltage winding 1 generally comprises a secondary winding 21, which in turn is arranged on an iron core 22, which can be a frame core.
  • the high-voltage winding 1 can be surrounded by a high-voltage electrode in a manner not shown.
  • FIGS. 3 and 4 serve to explain the contact element of the high-voltage winding according to the invention. They show a contact element 30 which has a first contact strip 31.
  • This first contact strip 31 is arranged within the shell parts 12 and 13 of the intermediate electrode 9 and has one end 32 connected to the outer end 33 of the inner partial winding 2.
  • the contact strip 21 is bent at its other end 35 in a meandering shape.
  • the contact strip 31 is part of a contact strip 36, from which a second contact strip 37 is also formed. The contact strip 36 is therefore guided outwards through the gap 18 between the shell parts 12 and 13.
  • the second contact strip 37 is at one end 38 with the inner end 39 of the outer partial winding, not shown, connected and bent at its other end 40 in a meandering shape.
  • the meandering bent region of the second contact strip 37 lies outside the shell part 13. In this way it is achieved that - if there is a gap between the shell parts and the partial windings when exposed to heat - contact between the contact strip 26 and the two is definitely made Shell parts 12 and 13 results so that they are at the same potential.
  • the contact strip opens in the area that is bent in a meandering manner and thus ensures contact.
  • each contact strip 31 or 37 is provided in the region of its connection point 41 or 42 with the ends 33 or 39 of the partial windings 2 and 3 with a transversely extending fastening tab 43 or 44.
  • These fastening tabs 43 and 44 have a foldable part 45 and 46, so that the entire contact element can be mechanically fixed with the insulation of the partial windings or the plastic film. This is done in that after completion of the inner partial winding 2, the lower part 47 of the fastening tab 43 in FIG. 4 is wrapped with plastic film after the connection point 41 has been produced, the entire remaining part of the contact element being folded away to the side (to the right).
  • the entire remaining part of the contact element is then folded back and the shell parts 12 and 13 are applied, the contact strip being guided outwards through the gap 18 in the manner shown in FIG.
  • the part 46 of the fastening tab 44 is folded outwards (to the left) and the plastic film of the winding insulation of the outer partial winding 3 is applied to the other part 48 of the fastening tab 44 so that the contact element in the area outside the shell parts 12 and 13 is mechanically fixed.
  • the part 46 is then folded back, the connection to the inner end 39 of the outer part winding 3 is established and then the entire outer part winding 3 is produced in the manner already described.
  • a high-voltage winding 1 is then obtained, the shell parts 12 and 13 of which ensure firm mechanical cohesion of the partial windings 2 and 3, are at the same potential and prevent a short-circuit turn due to a gap which is not bridged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Regulation Of General Use Transformers (AREA)

Claims (5)

1. Enroulement à haute tension (1) d'un transformateur de tension inductif comportant au moins deux enroulements partiels s'enveloppant co- axialement (2, 3) et une électrode intercalaire (9) située entre les enroulements partiels et qui déborde latéralement l'enroulement à haute tension (1), ), avec des zones marginales présentes des deux côtés d'une zone centrale (10) située à l'intérieur de l'enroulement à haute tension, caractérisé par le fait que l'électrode intercalaire (9) est constituée par deux éléments de coque métalliques usuels (13) en forme de demi-anneaux, qui possèdent des trous (14) dans leur zone centrale (10), que les éléments de coque (12, 13) entourent extérieurement un enroulement partiel (intérieur) (2) en laissant subsister deux fentes (18) et sont repoussés par l'autre enroulement partiel bobiné (extérieur) (3) contre le premier enroulement partiel (2) et l'une des deux fentes (18) et pontée par un organe de contact (30).
2. Enroulement à haute tension suivant la revendication 1, comportant deux enroulements partiels réalisés sous la forme d'enroulements en couches, caractérisé par le fait que les éléments de coque (12, 13) comportent, dans la zone centrale (10), un renfoncement en forme de moulure annulaire (11), possédant une largeur correspondant à la largeur des couches d'enroulement (4) des enroulements partiels (2, 3) réalisés sous la forme d'enroulements rectangulaires, et que chaque enroulement partiel (2, 3) comporte, entre ses couches d'enroulement (4), des feuilles (5) portant une large thermoplastique et dont la largeur est supérieure à la largeur des couches d'enroulement (4) et qui sont crénelées sur leurs côtés en saillie hors des couches d'enroulements (4), les côtés en saillie étant enroulés de manière à être en recouvrement à l'extérieur, et les feuilles (5) étant collées aux couches d'enroulement (4) et entre elles sous l'application d'une chaleur aux couches de laque.
3. Enroulement à haute tension suivant la revendication 1 ou 2, caractérisé par le fait que l'organe de contact (30) contient une première bande de contact (31 ) appliqué contre les éléments de coque (12, 13) et qui est reliée à l'extrémité extérieure (33) du premier enroulement partiel intérieur (2), et contient une seconde bande de contact (37) appliquée extérieurement contre les éléments de coque (12, 13) et qui est reliée à l'extrémité intérieure (39) de l'autre enroulement partiel extérieur (3), et que les bandes de contact (31, 37) sont reliées entre elles dans la zone de la fente comblée (18).
4. Enroulement à haute tension suivant la revendication 3, caractérisé par le fait que les bandes de contact (31, 37) sont constituées par une seule bande de contact (36) qui est guidée à travers la fente (18), et que la première bande de contact (31) est repliée avec une forme sinueuse dans la zone d'un élément de coque respectif (12) et que la seconde bande de contact (37) est repliée avec une forme sinueuse dans la zone de l'autre élément de coque respectif (13).
5. Enroulement à haute tension suivant l'une des revendications 2 à 4, caractérisé par le fait que les bandes de contact (31, 37) comportent, au niveau de leur zone de jonction (41, 42) avec les extrémités (33, 39) des enroulements partiels (2, 3), des pattes de fixation transversales (43, 44) qui sont fixées par leur première partie respective (47, 48) au moyen des feuilles respectivement dans la zone marginale des enroulements partiels (2, 3) et peuvent être rabattues par leur autre partie respective (45, 46) autour des feuilles (5).
EP84730134A 1984-01-30 1984-12-06 Enroulement à haute tension d'un transformateur de tension inductif Expired EP0151366B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84730134T ATE28371T1 (de) 1984-01-30 1984-12-06 Hochspannungswicklung eines induktiven spannungswandlers.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843403526 DE3403526A1 (de) 1984-01-30 1984-01-30 Hochspannungswicklung eines induktiven spannungswandlers
DE3403526 1984-01-30

Publications (2)

Publication Number Publication Date
EP0151366A1 EP0151366A1 (fr) 1985-08-14
EP0151366B1 true EP0151366B1 (fr) 1987-07-15

Family

ID=6226511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84730134A Expired EP0151366B1 (fr) 1984-01-30 1984-12-06 Enroulement à haute tension d'un transformateur de tension inductif

Country Status (3)

Country Link
EP (1) EP0151366B1 (fr)
AT (1) ATE28371T1 (fr)
DE (2) DE3403526A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR962091A (fr) * 1950-05-31
FR564658A (fr) * 1922-04-05 1924-01-08 Thomson Houston Comp Francaise Perfectionnements apportés aux transformateurs
FR900364A (fr) * 1942-12-05 1945-06-27 Philips Nv Perfectionnements aux transformateurs à haute tension
US2904762A (en) * 1954-05-20 1959-09-15 Richard B Schulz Shielded transformer
AT182448B (de) * 1954-12-16 1955-06-25 Josef Dr Techn Zelisko Hochspannungswandler mit Gießharzisolation
DE1488229B2 (de) * 1964-11-26 1972-03-02 Licentia Patent Verwaltungs GmbH, 6000 Frankfurt Zylinderfoermige schirmflaeche fuer transformatoren und drosselspulen oder dergl zur verwendung in elektrischen und magnetischen feldern hoechster feldstaerken
DE1513906A1 (de) * 1965-01-06 1969-07-10 Licentia Gmbh Wicklung fuer Trocken- und OEltransformatoren und -drosseln aus leitender Folie
DE2452056B2 (de) * 1974-11-02 1978-02-09 Messwandler-Bau Gmbh, 8600 Bamberg Induktiver spannungswandler fuer eine mittels isoliergas vollisolierte, metallgekapselte hochspannungsschaltanlage
DE2548376C2 (de) * 1975-10-29 1986-01-16 Apparatebau Wilhelm Heibl Gmbh, 8671 Selbitz Elektrostatische Abschirmung eines Ringkernübertragers
DE2628524C2 (de) * 1976-06-24 1982-06-09 Siemens AG, 1000 Berlin und 8000 München Hochspannungswicklung aus mehreren Teilspulen für Spannungswandler,
DE3022070C2 (de) * 1980-06-12 1986-05-07 Transformatoren Union Ag, 7000 Stuttgart Schirmkörper für bewickelte Kernschenkel von Transformatoren, Drosselspulen u.dgl.
DE8127860U1 (de) * 1981-09-18 1982-01-21 Siemens AG, 1000 Berlin und 8000 München Lagenwicklung, insbesondere fuer einen induktiven spannungswandler

Also Published As

Publication number Publication date
DE3464821D1 (en) 1987-08-20
DE3403526A1 (de) 1985-08-01
EP0151366A1 (fr) 1985-08-14
ATE28371T1 (de) 1987-08-15

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