EP0102941A2 - Enroulement à conducteurs transposés - Google Patents

Enroulement à conducteurs transposés Download PDF

Info

Publication number
EP0102941A2
EP0102941A2 EP83890143A EP83890143A EP0102941A2 EP 0102941 A2 EP0102941 A2 EP 0102941A2 EP 83890143 A EP83890143 A EP 83890143A EP 83890143 A EP83890143 A EP 83890143A EP 0102941 A2 EP0102941 A2 EP 0102941A2
Authority
EP
European Patent Office
Prior art keywords
connecting webs
coils
longitudinal axis
insulating material
transformer
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
EP83890143A
Other languages
German (de)
English (en)
Other versions
EP0102941A3 (en
EP0102941B1 (fr
Inventor
Peter Bogensberger
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.)
Andritz Hydro GmbH Austria
Original Assignee
Andritz Hydro GmbH Austria
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 Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of EP0102941A2 publication Critical patent/EP0102941A2/fr
Publication of EP0102941A3 publication Critical patent/EP0102941A3/de
Application granted granted Critical
Publication of EP0102941B1 publication Critical patent/EP0102941B1/fr
Expired 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
    • H01F27/306—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
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads

Definitions

  • the invention relates to a twisted conductor winding for a furnace transformer consisting of a main and an additional transformer, which is arranged on the secondary side and has coils which enclose the two iron legs of the main and additional transformer with two parallel connecting webs lying between them.
  • the voltage setting for furnace transformers is made on a case-by-case basis in the DC link of the transformer by connecting and disconnecting the DC link voltage.
  • the secondary coils of the main transformer and the secondary coils of the additional transformer each have only one turn.
  • the result of this is that the iron legs of the main and additional transformer are encompassed by one and the same secondary coil.
  • the result is a curved secondary winding which consists of only one secondary coil. This can be made of solid copper sheet which extends over the entire axial winding length or is divided several times. In those cases where it is necessary that over Subdividing the main winding and the additional transformer into the secondary winding results in a multiplicity of axially superimposed "twisted conductor violin coils" which are electrically connected in parallel.
  • the above type of bracing cannot be used because the wire conductor cannot be drilled through.
  • the secondary winding of the furnace transformer is made up of several stranded conductor coils, each with one turn, screws or similar connecting parts can often no longer be inserted between the individual coils due to space constraints. The distance between the individual coils is normally only given by the thickness of the winding jaws.
  • the object of the invention is therefore to create a winding including bracing, which is provided especially for twisted pair conductors, and the twisted pair conductor rods also do not have to be drilled through.
  • the object of the invention is thus achieved in that the connecting webs of a coil with a selected normal distance preferably run parallel to a longitudinal axis which connects the centers of the two iron legs of the main and additional transformer and that further coils are arranged rotated by 180 about the longitudinal axis, where the normal distance between the connecting webs of the individual coils from the longitudinal axis, preferably alternating between left and right of this, and that an insulating plate whose thickness is twice the normal distance is arranged vertically between the inner connecting webs, and that a further insulating material plate is provided on the vertical outer surfaces of the connecting webs and with the insulating material plate between the inner ones Crosspieces is detachably connected.
  • This makes it possible for the first time to provide a very stable bracing of the connecting webs, even in the case of twisted pair windings, which is simple to manufacture.
  • the changed shape of the individual fixed conductor coils is easy to manufacture.
  • the insulating material plate has threaded holes between the inner connecting webs above and below the contact surfaces of these connecting webs and screws, preferably insulated and non-magnetic, are inserted from the outside of the insulating material plates on the vertical outer surfaces of the connecting webs Threaded holes are screwed in.
  • This configuration has the advantage that the insulating boards can be drilled together on the vertical outer surfaces of the connecting webs and then serve as templates for the position of the threaded holes in the insulating board between the internal connecting webs.
  • FIG. 1 shows a top view of a dismantled furnace transformer, in which only the secondary winding is shown, however, and FIG. 2 shows an enlarged section along the line A - B in FIG. 1.
  • the two legs 1, 2 are enclosed by the individual drill conductor coils 5, 6, each with two closely spaced and intermediate connecting webs 7, 8.
  • the individual, preferably rectangular, copper rods 9 of the twisted conductor coils 5, 6 are insulated from one another by a lacquer coating or a banding.
  • the ends 10, 11 of the individual twisted conductor coils 5, 6 are connected in parallel, which results in the type of winding.
  • the connecting webs 12, 13, 14, 15 of the twisted conductor coils 5, 6 run parallel to a longitudinal axis 16 which intersects the center points 17, 18 of the iron legs 1, 2 of the main and additional transformer.
  • Individual twisted conductor coils 5, 6 are now arranged rotated by 180 about the longitudinal axis 16 in such a way that the connecting webs 12, 13 of one twisted conductor coil 5 appear to the left, the next to the right and the next but one again to the left of the longitudinal axis 16.
  • this insulating material plate 26 is given by the distance between the iron legs 1, 2 of the main and additional transformers from one another and by the cross section of the wire conductor coils 5, 6. Furthermore, the length of the insulating material plate 26 is determined by the number of arranged conductor coils 5, 6.
  • a further insulating material plate 32, 33 is arranged on both sides which are made of the same material as the insulating plate 26.
  • Each of these insulating material plates 32, 33 has through holes 34 above and below the outer surfaces 27, 28, 29, 30, 31 of the connecting webs 13, 14, 20, 22, 24 or the contact surfaces of the insulating material plates 32, 33.
  • 23 threaded through holes 35 in the insulating material 26 between the internal connecting webs 12, 15, 19, 2 1, are provided. These are arranged above and below the contact surfaces 36, 37, 38, 39, 40 of the internal connecting webs 12, 15, 19, 21, 23.
  • hexagon screws 41 are inserted from the outside through the through holes 34 into the insulating material plates 32, 33 and screwed into the respective threaded holes 35 in the insulating material plate 26, as a result of which the connecting webs 12, 13, 14, .15, 19, 20, 21, 22, 23 , 24 are held in place. It takes this tension the expanding forces during the short circuit in the ver binding webs 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 of the individual stranded conductor coils 5, 6.
  • the thickness of the insulating material plate 26, which is decisive for the maximum screwing depth of the hexagon screws 41 into the threaded holes 35, is determined by the double normal distance 25 or by the distance of the internal connecting webs 12, 15, 19, 21, 23 from one another. This normal distance 25 can be varied in accordance with the expansion forces that occur and the minimum screw-in depth of the hexagon screws 41 that is necessary as a result.
  • hexagon screws 41 are non-magnetic and insulated, since this will surely prevent excessive heating and voltage flashovers between the connecting webs 12, 13, 14, 15, 19, 20, 21, 22, 23, 24 and the hexagon screws 41 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulated Conductors (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Non-Insulated Conductors (AREA)
EP83890143A 1982-09-02 1983-09-02 Enroulement à conducteurs transposés Expired EP0102941B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0329282A AT378278B (de) 1982-09-02 1982-09-02 Ofentransformator bestehend aus einem hauptund einem zusatztransformator
AT3292/82 1982-09-02

Publications (3)

Publication Number Publication Date
EP0102941A2 true EP0102941A2 (fr) 1984-03-14
EP0102941A3 EP0102941A3 (en) 1985-01-09
EP0102941B1 EP0102941B1 (fr) 1986-12-03

Family

ID=3548298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83890143A Expired EP0102941B1 (fr) 1982-09-02 1983-09-02 Enroulement à conducteurs transposés

Country Status (4)

Country Link
EP (1) EP0102941B1 (fr)
AT (1) AT378278B (fr)
DE (1) DE3368146D1 (fr)
NO (1) NO160106C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118315176A (zh) * 2024-03-22 2024-07-09 成都西电中特电气有限责任公司 一种双器身电炉变压器及其线圈组件

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220028B (de) * 1962-12-21 1966-06-30 Bbc Brown Boveri & Cie Hochstromtransformator, insbesondere Ofentransformator, mit Zwischenkreis-Regulierung
DE2136211C3 (de) * 1971-07-20 1979-03-22 Transformatoren Union Ag, 7000 Stuttgart Hochstromtransformator-Aggregat, insbesondere zur Speisung von Elektroöfen
DE2736092A1 (de) * 1977-08-10 1979-02-22 Transformatoren Union Ag Wicklung fuer transformatoren mit zwei windungen fuer sehr hohe elektrische stroeme

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118315176A (zh) * 2024-03-22 2024-07-09 成都西电中特电气有限责任公司 一种双器身电炉变压器及其线圈组件

Also Published As

Publication number Publication date
EP0102941A3 (en) 1985-01-09
DE3368146D1 (en) 1987-01-15
EP0102941B1 (fr) 1986-12-03
NO160106C (no) 1989-03-08
ATA329282A (de) 1984-11-15
AT378278B (de) 1985-07-10
NO160106B (no) 1988-11-28
NO833136L (no) 1984-03-05

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