EP0122546B1 - Flyback transformer - Google Patents

Flyback transformer Download PDF

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Publication number
EP0122546B1
EP0122546B1 EP19840103760 EP84103760A EP0122546B1 EP 0122546 B1 EP0122546 B1 EP 0122546B1 EP 19840103760 EP19840103760 EP 19840103760 EP 84103760 A EP84103760 A EP 84103760A EP 0122546 B1 EP0122546 B1 EP 0122546B1
Authority
EP
European Patent Office
Prior art keywords
winding
foil
wire
electrically conducting
shaped part
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
EP19840103760
Other languages
German (de)
French (fr)
Other versions
EP0122546A1 (en
Inventor
Gerard Rilly
Erich Weisser
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Publication of EP0122546A1 publication Critical patent/EP0122546A1/en
Application granted granted Critical
Publication of EP0122546B1 publication Critical patent/EP0122546B1/en
Expired legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42Flyback transformers

Definitions

  • the invention is based on a line transformer with a winding made of a metallic foil and an intermediate plastic foil serving as insulation, the winding taps consisting of electrically conductive molded parts inserted transversely to the winding or welded onto the metal foil and protruding beyond the foil edges.
  • So-called diode split line transformers which consist of a first winding which carries the primary winding and the secondary windings and which have a second winding from which the high voltage is taken.
  • the high-voltage winding consists of several winding chambers into which the high-voltage winding is distributed. The individual winding sections in the chambers are connected in series via diodes.
  • the high-voltage winding is embedded in a synthetic resin to achieve sufficient high-voltage strength.
  • a sufficiently large coupling between the windings is necessary, i.e. the winding space is very limited in such transformers for the first-mentioned winding. Since the primary winding of the first winding has a relatively high number of turns, this primary winding using film technology takes up too much winding space.
  • the invention is therefore based on the object of finding a space-saving winding technique for a diode split transformer.
  • the section of the molded part 7 opposite the connection side 9 is connected to the wire end 10 of the winding 5, so that both ends 9, 10 of this winding lie on a side common to the other connections.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)

Description

Die Erfindung geht aus von einem Zeilentransformator mit einem Wickel aus einer metallischen Folie und dazwischenliegender als Isolation dienender Kunststoffolie, wobei die Wicklungsabgriffe aus quer zur Wicklung eingelegten oder auf die Metallfolie aufgeschweissten über die Folienränder hinausragenden elektrisch leitenden Formteilen bestehen.The invention is based on a line transformer with a winding made of a metallic foil and an intermediate plastic foil serving as insulation, the winding taps consisting of electrically conductive molded parts inserted transversely to the winding or welded onto the metal foil and protruding beyond the foil edges.

Zur Vereinfachung und Verbilligung der Herstellung eines Wickels für einen Zeilentransformator ist es bekannt, den Wickel mit Hilfe einer metallischen Folie herzustellen, wobei als Isolation eine Kunststoffolieneinlage dient. Die einzelnen elektrischen Abgriffe der Wicklung werden durch quer zur Wicklung eingelegte und eingewickelte oder auch auf die metallische Folie aufgeschweisste Drähte oder Formteile hergestellt, die den Folienrand überragen (DE-AS 2 612 465). Dadurch wird ein erheblich geringerer Wickelraum benötigt als mit Drahtwicklungen.To simplify and reduce the cost of producing a winding for a line transformer, it is known to produce the winding with the aid of a metallic film, a plastic film insert serving as insulation. The individual electrical taps of the winding are produced by wires or molded parts which are inserted and wrapped transversely to the winding or which are welded onto the metallic foil and which project beyond the edge of the foil (DE-AS 2 612 465). As a result, a significantly smaller winding space is required than with wire windings.

Es sind sogenannte Dioden-Split-Zeilentransformatoren bekannt, die aus einem ersten Wickel bestehen, der die Primärwicklung und die Sekundärwicklungen trägt und die einen zweiten Wickel besitzen, dem die Hochspannung entnommen wird. Der Hochspannungswickel besteht aus mehreren Wickelkammern, in welche die Hochspannungswicklung verteilt wird. Die einzelnen Wicklungsabschnitte in den Kammern sind über Dioden in Serie geschaltet. Die Hochspannungswicklung wird in einem Kunstharz eingebettet zur Erzielung einer ausreichenden Hochspannungsfestigkeit. Es ist dabei eine genügend grosse Kopplung zwischen den Wickeln notwendig, d.h. der Wickelraum ist bei derartigen Transformatoren für den erst genannten Wickel sehr begrenzt. Da die Primärwicklung des ersten Wickels eine relativ hohe Windungszahl besitzt nimmt diese Primärwicklung in Folientechnik zuviel Wickelraum in Anspruch.So-called diode split line transformers are known which consist of a first winding which carries the primary winding and the secondary windings and which have a second winding from which the high voltage is taken. The high-voltage winding consists of several winding chambers into which the high-voltage winding is distributed. The individual winding sections in the chambers are connected in series via diodes. The high-voltage winding is embedded in a synthetic resin to achieve sufficient high-voltage strength. A sufficiently large coupling between the windings is necessary, i.e. the winding space is very limited in such transformers for the first-mentioned winding. Since the primary winding of the first winding has a relatively high number of turns, this primary winding using film technology takes up too much winding space.

Aufgabe und LösungTask and solution

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine möglichst platzsparende Wickeltechnik für einen Dioden-Split-Transformator zu finden.The invention is therefore based on the object of finding a space-saving winding technique for a diode split transformer.

Diese Aufgabe wird durch die im Kennzeichen des Patentanspruchs angegebene Massnahme gelöst.This object is achieved by the measure specified in the characterizing part of the patent claim.

Nachstehend soll die Erfindung an einem Ausführungsbeispiel mit Hilfe der Zeichnung näher erläutert werden.The invention will be explained in more detail using an exemplary embodiment with the aid of the drawing.

Mit 1 ist der Wickelkörper des ersten Wickels bezeichnet, auf welchem in bekannter Wickeltechnik die Sekundärwicklung, bestehend aus Metallfolien 2 und isolierenden Zwischenlagen 3 angeordnet ist. An denjenigen Stellen der Wicklung, an denen Abgriffe herausgeführt werden, sind metallische Formteile 4 quer zur Folienrichtung angeschweisst, deren Enden über die Folienränder hinausragen. Auf diese Folienwicklung ist eine Primärwicklung, bestehend aus Kupferdrahtwindungen 5 gewickelt. Über diesen Wickel kann der Wickelkörper 6 für die Hochspannungswicklung geschoben werden. Erfindungsgemäss wird nun zwecks Rückführung des Drahtendes 11 der Wicklung 5 ein elektrisch leitendes Formteil 7 in einer Isolierfolienschicht 8, zwischen den beiden Wicklungen 3 und 5 eingebettet, eingefügt, welches an beiden Kopfenden der Wicklung herausragt. Das der Anschlussseite 9 entgegengesetzte Teilstück des Formteils 7 wird mit dem Drahtende 10 der Wicklung 5 verbunden, so dass beide Enden 9, 10 dieser Wicklung auf einer mit den anderen Anschlüssen gemeinsamen Seite liegen. Auf diese Weise ergibt sich eine einfache Rückführung, die nicht aufträgt und somit Platz spart, da ein in den Wickel einbezogenes zusätzliches Formteil den Durchmesser eines Wickels nicht vergrössert wie z.B. eine Rückführung des Drahtendes ausserhalb der Wicklung.1 denotes the winding body of the first winding, on which the secondary winding, consisting of metal foils 2 and insulating intermediate layers 3, is arranged in a known winding technique. At those points of the winding at which taps are led out, metallic molded parts 4 are welded on transversely to the film direction, the ends of which protrude beyond the film edges. A primary winding consisting of copper wire turns 5 is wound on this foil winding. The winding body 6 for the high-voltage winding can be pushed over this winding. According to the invention, for the purpose of returning the wire end 11 of the winding 5, an electrically conductive molded part 7 is inserted in an insulating film layer 8, embedded between the two windings 3 and 5, which protrudes from both ends of the winding. The section of the molded part 7 opposite the connection side 9 is connected to the wire end 10 of the winding 5, so that both ends 9, 10 of this winding lie on a side common to the other connections. This results in a simple return, which is not bulky and thus saves space, since an additional molded part included in the winding does not increase the diameter of a winding, e.g. a return of the wire end outside the winding.

Claims (1)

  1. A line transformer having a winding of a metallic foil (2) and an interposed plastic film (3) serving as insulation, wherein the winding taps consist of electrically conducting shaped parts (4) which are inserted transversely to ther winding or welded onto the metal foil (2) and project beyond the edges of the foil, characterised in that the part of the winding consisting of the metallic foil (2) serves, with its taps, as a secondary winding and that the primary winding (5) of the line transformer consists of wire turns and that a further electrically conducting shaped part (7), which projects beyond the winding at both ends, is introduced in the axial direction of the winding between the foil winding (2) and the wire winding (5) with the inclusion of an insulating sheet (8), and that the one extremity (9) of the further shaped part (7) serves as an electrical connection for the end (11) of the wire of the primary (5), which end is connected, in an electrically conducting manner, to the further shaped part (7) at the end opposite to the electrical connection (9).
EP19840103760 1983-04-08 1984-04-05 Flyback transformer Expired EP0122546B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19838310270 DE8310270U1 (en) 1983-04-08 1983-04-08 LINE TRANSFORMER
DE8310270U 1983-04-08

Publications (2)

Publication Number Publication Date
EP0122546A1 EP0122546A1 (en) 1984-10-24
EP0122546B1 true EP0122546B1 (en) 1986-10-08

Family

ID=6752031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840103760 Expired EP0122546B1 (en) 1983-04-08 1984-04-05 Flyback transformer

Country Status (2)

Country Link
EP (1) EP0122546B1 (en)
DE (1) DE8310270U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106653315A (en) * 2016-12-21 2017-05-10 山东华信电气股份有限公司 Sleeve current mutual inductor winded by copper foil mylar polyester belts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069705B (en) * 1959-11-26
FR2266274A1 (en) * 1974-03-28 1975-10-24 Videon Sa Very high voltage transformer - has winding of conductive and insulating layers around a tube with ferrite core
DE3033979A1 (en) * 1980-09-10 1982-04-22 Blaupunkt-Werke Gmbh, 3200 Hildesheim TRANSFORMER

Also Published As

Publication number Publication date
DE8310270U1 (en) 1983-12-15
EP0122546A1 (en) 1984-10-24

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