EP2369602B1 - Assembly with at least two coils axially stacked on the same core leg - Google Patents

Assembly with at least two coils axially stacked on the same core leg Download PDF

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Publication number
EP2369602B1
EP2369602B1 EP10003059.2A EP10003059A EP2369602B1 EP 2369602 B1 EP2369602 B1 EP 2369602B1 EP 10003059 A EP10003059 A EP 10003059A EP 2369602 B1 EP2369602 B1 EP 2369602B1
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EP
European Patent Office
Prior art keywords
coil
barrier
barriers
winding
coils
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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.)
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EP10003059.2A
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German (de)
French (fr)
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EP2369602A1 (en
Inventor
Benjamin Weber
Bhavesh Patel
Burak Esenlik
Frank Cornelius
Marcos Dr. Bockholt
Jens Dr. Tepper
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ABB Technology AG
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ABB Technology AG
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Priority to EP10003059.2A priority Critical patent/EP2369602B1/en
Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to PL10003059T priority patent/PL2369602T3/en
Priority to ES10003059T priority patent/ES2415909T3/en
Priority to KR1020127024782A priority patent/KR101819034B1/en
Priority to RU2012144801/07A priority patent/RU2564403C2/en
Priority to CN201180014947.2A priority patent/CN102792397B/en
Priority to PCT/EP2011/001155 priority patent/WO2011116884A1/en
Priority to JP2013500363A priority patent/JP5745612B2/en
Priority to BR112012024201-6A priority patent/BR112012024201B1/en
Publication of EP2369602A1 publication Critical patent/EP2369602A1/en
Priority to US13/624,529 priority patent/US9449755B2/en
Application granted granted Critical
Publication of EP2369602B1 publication Critical patent/EP2369602B1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/324Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/323Insulation between winding turns, between winding layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/327Encapsulating or impregnating
    • H01F2027/328Dry-type transformer with encapsulated foil winding, e.g. windings coaxially arranged on core legs with spacers for cooling and with three phases

Description

Die Erfindung betrifft eine Anordnung mit mindestens zwei auf einem gemeinsamen Kernschenkel axial übereinander angeordneten Spulen, wobei jede Spule mindestens zwei radial übereinander angeordnete Wicklungen aufweist und Barrieren zwischen den Wicklungen vorgesehen sind.The invention relates to an arrangement with at least two on a common core leg axially superposed coils, each coil having at least two radially superposed windings and barriers are provided between the windings.

Eine Anwendung ist bei Spulen und Transformatoren, insbesondere bei Trockentransformatoren gegeben.An application is given in coils and transformers, especially in dry-type transformers.

Es ist bei Transformatoren üblich, zwei oder mehrere Spulen axial übereinander auf einem Kernschenkel anzuordnen, wobei jede Spule eine innere Wicklung respektive Unterspannungswicklung sowie eine äußere Wicklung respektive Oberspannungswicklung aufweist. Je nach Verschaltung der Spulen berechnet sich der im Hinblick auf eine ausreichende Spannungsfestigkeit erforderliche Abstand zwischen zwei Spulen. Es ist des Weiteren üblich, zwischen der inneren Wicklung und der äußeren Wicklung einer Spule Barrieren anzuordnen, die einen elektrischen Überschlag zwischen den beiden Wicklungen verhindern sollen.It is customary in transformers to arrange two or more coils axially one above the other on a core leg, wherein each coil has an inner winding respectively lower voltage winding and an outer winding respectively high voltage winding. Depending on the interconnection of the coils, the distance between two coils required with regard to a sufficient dielectric strength is calculated. It is also common to arrange between the inner winding and the outer winding of a coil barriers to prevent electrical flashover between the two windings.

In der PatentschriftIn the patent US 2924799 AUS 2924799 A ist eine entsprechende Anordnung mit mehreren axial benachbart auf einem gemeinsamen Kernschenkel befindlichen Spulen offenbart, wobei zwischen benachbarten Spulen jeweilige Barrieren vorgesehen sind.a corresponding arrangement is disclosed with a plurality of coils located axially adjacent to one another on a common core limb, wherein respective barriers are provided between adjacent coils.

In Fig. 4 ist hierzu ein seitlicher Schnitt durch eine Anordnung mit mindestens zwei Spulen gemäß dem Stand der Technik dargestellt. Es ist ein Kernschenkel 7 zu erkennen, auf welchem eine erste Spule 1 und eine zweite Spule 4 axial übereinander angeordnet sind. Die erste Spule 1 weist zwei radial übereinander angeordnete Wicklungen 2, 3 auf, wobei Wicklung 2 auch als innere Wicklung respektive Unterspannungswicklung und Wicklung 3 auch als äußere Wicklung respektive Oberspannungswicklung bezeichnet werden. Die zweite Spule 4 weist zwei radial übereinander angeordnete Wicklungen 5, 6 auf, wobei Wicklung 5 auch als innere Wicklung respektive Unterspannungswicklung und Wicklung 6 auch als äußere Wicklung respektive Oberspannungswicklung bezeichnet werden.In Fig. 4 For this purpose, a lateral section through an arrangement with at least two coils according to the prior art is shown. It is a core thigh 7 to recognize on which a first coil 1 and a second coil 4 are arranged axially one above the other. The first coil 1 has two windings 2, 3 arranged radially one above the other, whereby winding 2 is also referred to as an inner winding or undervoltage winding and winding 3 is also referred to as an outer winding or a high-voltage winding. The second coil 4 has two radially superposed windings 5, 6, wherein winding 5 are also referred to as inner winding respectively lower voltage winding and winding 6 as outer winding respectively high-voltage winding.

Zwischen der inneren Wicklung 2 und der äußeren Wicklung 3 der ersten Spule 1 sind mehrere Barrieren 51 angeordnet, um einen elektrischen Überschlag zwischen den beiden Wicklungen 2, 3 zuverlässig zu verhindern. In ähnlicher Art und Weise sind zwischen der inneren Wicklung 5 und der äußeren Wicklung 6 der zweiten Spule 4 mehrere Barrieren 52 angeordnet, um einen elektrischen Überschlag zwischen den beiden Wicklungen 5, 6 zuverlässig zu verhindern.Between the inner winding 2 and the outer winding 3 of the first coil 1, a plurality of barriers 51 are arranged in order to reliably prevent an electrical flashover between the two windings 2, 3. In a similar manner, a plurality of barriers 52 are arranged between the inner winding 5 and the outer winding 6 of the second coil 4 in order to reliably prevent an electrical flashover between the two windings 5, 6.

Der in Abhängigkeit der Verschaltung der Spulen und der Spannungsdifferenzen vorzugebende axiale Abstand zwischen beiden Spulen 1, 4 ist mit A1 bezeichnet (gemessen zwischen den inneren Wicklungen 2, 5). Der Barrierenüberstand, d. h. der Überstand einer Barriere über die senkrecht zur Wicklungsachse W angeordnete Stirnfläche einer Wicklung, ist mit B bezeichnet (gemessen zwischen Wicklung 3 und Barriere 51 bzw. zwischen Wicklung 6 und Barriere 52).The axial distance between the two coils 1, 4 to be predetermined as a function of the wiring of the coils and the voltage differences is denoted by A1 (measured between the inner windings 2, 5). The barrier supernatant, d. H. the projection of a barrier over the end face of a winding arranged perpendicular to the winding axis W is designated B (measured between winding 3 and barrier 51 or between winding 6 and barrier 52).

Speziell für höhere Spannungen respektive Spannungsdifferenzen sind die erforderlichen Barrierenüberstände über die Wicklungen der einzelnen Spulen relativ groß und führen somit zu einer Verlängerung der Kernschenkel - siehe die notwendige Kernschenkellänge L1.Especially for higher voltages or voltage differences, the required barrier projections over the windings of the individual coils are relatively large and thus lead to an extension of the core legs - see the necessary core leg length L1.

Der Erfindung liegt die Aufgabe zugrunde, eine hinsichtlich der notwendigen Dimensionierung optimierte Anordnung mit mindestens zwei auf einem gemeinsamen Kernschenkel axial übereinander angeordneten Spulen anzugeben.The invention has for its object to provide an optimized with respect to the necessary dimensioning arrangement with at least two on a common core leg axially superimposed coils.

Diese Aufgabe wird gemäß einer ersten Ausführungsform in Verbindung mit dem Oberbegriff des Anspruchs 1 erfindungsgemäß dadurch gelöst dass die Barrieren benachbarter Spulen radial versetzt zueinander angeordnet sind und dass die Randbereiche der Barrieren kammartig ineinander greifen.This object is achieved according to a first embodiment in conjunction with the preamble of claim 1 according to the invention that the barriers adjacent coils are radially offset from one another and that the edge regions of the barriers mesh with each other like a comb.

Diese Aufgabe wird gemäß einer zweiten Ausführungsform in Verbindung mit dem Oberbegriff des Anspruchs 2 erfindungsgemäß dadurch gelöst, dass die Barrieren der einander unmittelbar gegenüberliegenden Bereiche benachbarter Spulen wechselseitig verkürzt und verlängert sind, so dass stets einer verkürzten Barriere der einen Spule eine verlängerte Barriere der anderen Spule sowie umgekehrt einer verlängerten Barriere der einen Spule eine verkürzte Barriere der anderen Spule gegenüberliegt und bei jeder Spule auf eine verlängerte Barriere eine verkürzte Barriere folgt.This object is achieved according to a second embodiment in conjunction with the preamble of claim 2 according to the invention that the barriers of the immediately adjacent areas of adjacent coils are alternately shortened and lengthened, so that always a shortened barrier of a coil an extended barrier of the other coil and, conversely, an extended barrier of one coil facing a shortened barrier of the other coil and followed by a shortened barrier on each coil over an extended barrier.

Ein beispielhafter Stand der Technik gemäß US 2 924 799 A offenbart, dass die Barrieren zum Teil in Form von Isolationsringen ausgebildet sind, welche zusätzlich um die senkrecht zur Wicklungsachse angeordneten Stirnflächen der Wicklungen greifen.An exemplary prior art according to US 2,924,799 A discloses that the barriers are partially formed in the form of insulation rings, which additionally engage around the arranged perpendicular to the winding axis faces of the windings.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass die Kernschenkellänge der Spule oder des Transformators verringert werden kann, was zu einem insgesamt kompakteren Aufbau der Spule oder des Transformators führt. Die Barriereanordnung ist derart gestaltet, dass elektrische Überschläge von der außen liegenden Wicklung zur innen liegenden Wicklung vermieden werden, obwohl der axiale Abstand der Spulen zueinander reduziert ist.The advantages achieved by the invention are, in particular, that the core leg length of the coil or of the transformer can be reduced, which leads to an overall more compact construction of the coil or of the transformer. The barrier arrangement is designed such that electrical flashovers from the outer winding to the inner winding are avoided, although the axial distance of the coils is reduced to each other.

Zweckmäßige Ausgestaltungen der Erfindung sind in den Unteransprüchen dargestellt.Advantageous embodiments of the invention are shown in the subclaims.

Die Erfindung wird nachstehend an Hand der in der Zeichnung dargestellten Ausführungsbeispiele erläutert. Es zeigen:

Fig. 1
einen seitlichen Schnitt durch eine optimierte Anordnung mit mindestens zwei Spulen gemäß einer ersten Ausführungsform,
Fig. 2
einen seitlichen Schnitt durch eine optimierte Anordnung mit mindestens zwei Spulen gemäß einer zweiten Ausführungsform,
Fig. 3
einen seitlichen Schnitt durch eine Anordnung mit mindestens zwei Spulen gemäß dem Stand der Technik,
Fig. 4
einen seitlichen Schnitt durch eine Anordnung mit mindestens zwei Spulen gemäß dem Stand der Technik.
The invention will be explained below with reference to the embodiments illustrated in the drawings. Show it:
Fig. 1
FIG. 2 a lateral section through an optimized arrangement with at least two coils according to a first embodiment, FIG.
Fig. 2
a lateral section through an optimized arrangement with at least two coils according to a second embodiment,
Fig. 3
a side section through an arrangement with at least two coils according to the prior art,
Fig. 4
a lateral section through an arrangement with at least two coils according to the prior art.

In Fig. 1 ist ein seitlicher Schnitt durch eine optimierte Anordnung mit mindestens zwei Spulen gemäß einer ersten Ausführungsform dargestellt. Es ist ein Kernschenkel 7 zu erkennen, auf welchem eine erste Spule 1 und eine zweite Spule 4 axial übereinander angeordnet sind. Die erste Spule 1 weist zwei radial übereinander angeordnete Wicklungen 2, 3 auf, wobei Wicklung 2 auch als innere Wicklung und Wicklung 3 auch als äußere Wicklung bezeichnet werden. Die zweite Spule 4 weist zwei radial übereinander angeordnete Wicklungen 5, 6 auf, wobei Wicklung 5 auch als innere Wicklung und Wicklung 6 auch als äußere Wicklung bezeichnet werden. Die Zentralachse des Kernschenkels 7 ist gleichermaßen die Wicklungsachse W.In Fig. 1 is a side section through an optimized arrangement with at least two coils according to a first embodiment shown. It can be seen a core leg 7, on which a first coil 1 and a second coil 4 are arranged axially above one another. The first coil 1 has two windings 2, 3 arranged radially one above the other, winding 2 also being referred to as an inner winding and winding 3 also as an outer winding. The second coil 4 has two radially superposed windings 5, 6, wherein winding 5 are also referred to as inner winding and winding 6 as an outer winding. The central axis of the core leg 7 is likewise the winding axis W.

Zwischen der inneren Wicklung 2 und der äußeren Wicklung 3 der ersten Spule 1 sind Barrieren 9, 10, 11, 12, 13 angeordnet, um einen elektrischen Überschlag zwischen den beiden Wicklungen 2, 3 zuverlässig zu verhindern. In ähnlicher Art und Weise sind zwischen der inneren Wicklung 5 und der äußeren Wicklung 6 der zweiten Spule 4 Barrieren 15, 16, 17, 18, 19 angeordnet, um einen elektrischen Überschlag zwischen den beiden Wicklungen 5, 6 zuverlässig zu verhindern.Between the inner winding 2 and the outer winding 3 of the first coil 1 are barriers 9, 10, 11, 12, 13 arranged to reliably prevent electrical flashover between the two windings 2, 3. Similarly, between the inner winding 5 and the outer winding 6 of the second coil 4 barriers 15, 16, 17, 18, 19 are arranged to reliably prevent electrical flashover between the two windings 5, 6.

Dabei sind die Barrieren 9 - 13 sowie 15 - 19 auf dem Durchmesser - mit Zentralachse des Kernschenkels = Wicklungsachse W - so angeordnet, dass sich ohne Barrierenberührung eine axiale Annäherung der beiden Spulen 1, 4 erreichen lässt. Wie zu erkennen ist, sind die Barrieren benachbarter Spulen radial versetzt zueinander angeordnet, und die Randbereiche der Barrieren 9 - 13 sowie 15 - 19 greifen kammartig ineinander. Es ergeben sich Überlappungsbereiche U zwischen den Barrieren der benachbarten Spulen 1, 4. Die Barrierenüberstände B sind dabei unverändert zur Ausführungsform gemäß Fig. 4. Vorteilhaft ergibt sich ein im Vergleich zum axialen Abstand A1 (siehe Fig. 4) verringerter axialer Abstand A2. Dementsprechend ergibt sich eine reduzierte Kernschenkellänge L2.The barriers 9 - 13 and 15 - 19 on the diameter - with the central axis of the core leg = winding axis W - are arranged so that an axial approach of the two coils 1, 4 can be achieved without barrier contact. As can be seen, the barriers of adjacent coils are arranged radially offset from one another, and the edge regions of the barriers 9-13 and 15-19 mesh with one another like a comb. This results overlap areas U between the barriers of the adjacent coils 1, 4. The barrier projections B are unchanged from the embodiment according to Fig. 4 , Advantageous results in comparison to axial distance A1 (see Fig. 4 ) reduced axial distance A2. Accordingly, there is a reduced core leg length L2.

In Fig. 2 ist ein seitlicher Schnitt durch eine optimierte Anordnung mit mindestens zwei Spulen gemäß einer zweiten Ausführungsform dargestellt. Es ist ein Kernschenkel 7 zu erkennen, auf welchem eine erste Spule 1 und eine zweite Spule 4 axial übereinander angeordnet sind. Die erste Spule 1 weist zwei radial übereinander angeordnete Wicklungen 2, 3 auf, wobei Wicklung 2 auch als innere Wicklung und Wicklung 3 auch als äußere Wicklung bezeichnet werden. Die zweite Spule 4 weist zwei radial übereinander angeordnete Wicklungen 5, 6 auf, wobei Wicklung 5 auch als innere Wicklung und Wicklung 6 auch als äußere Wicklung bezeichnet werden.In Fig. 2 a lateral section through an optimized arrangement with at least two coils is shown according to a second embodiment. It can be seen a core leg 7, on which a first coil 1 and a second coil 4 are arranged axially above one another. The first coil 1 has two windings 2, 3 arranged radially one above the other, winding 2 also being referred to as an inner winding and winding 3 also as an outer winding. The second coil 4 has two radially superposed windings 5, 6, wherein winding 5 are also referred to as inner winding and winding 6 as an outer winding.

Zwischen der inneren Wicklung 2 und der äußeren Wicklung 3 der ersten Spule 1 sind Barrieren 21, 22, 23, 24, 25 angeordnet, um einen elektrischen Überschlag zwischen den beiden Wicklungen 2, 3 zuverlässig zu verhindern. In ähnlicher Art und Weise sind zwischen der inneren Wicklung 5 und der äußeren Wicklung 6 der zweiten Spule 4 Barrieren 27, 28, 29, 30, 31 angeordnet, um einen elektrischen Überschlag zwischen den beiden Wicklungen 5, 6 zuverlässig zu verhindern.Between the inner winding 2 and the outer winding 3 of the first coil 1 are barriers 21, 22, 23, 24, 25 arranged to reliably prevent an electrical flashover between the two windings 2, 3. Similarly, between the inner winding 5 and the outer winding 6 of the second coil 4 barriers 27, 28, 29, 30, 31 are arranged to reliably prevent electrical flashover between the two windings 5, 6.

Dabei sind die Barrieren 21 - 25 sowie 27 - 31 der einander unmittelbar gegenüberliegenden Bereiche beider Spulen 1, 4 wechselseitig verkürzt und verlängert, so dass einer verkürzten Barriere der einen Spule eine verlängerte Barriere der anderen Spule gegenüberliegt und bei einer Spule auf eine verlängerte Barriere eine verkürzte Barriere folgt. Es ergeben sich Überlappungsbereiche zwischen den Barrieren der benachbarten Spulen 1, 4. Derart lässt sich ohne Barrierenberührung eine axiale Annäherung der beiden Spulen 1, 4 erreichen. Der Barrierenüberstand B einer verlängerten Barriere entspricht dabei dem Barrierenüberstand B der Ausführungsform gemäß Fig. 4. Einer verkürzte Barriere 21, 28, 23, 30, 25 liegt unmittelbar eine verlängerte Barriere 27, 22, 29, 24, 31 gegenüber, ohne dass sich die gegenüberliegenden Barrieren berühren. Vorteilhaft ergibt sich ein im Vergleich zum axialen Abstand A1 (siehe Fig. 4) verringerter axialer Abstand A2. Dementsprechend ergibt sich eine reduzierte Kernschenkellänge L2.The barriers 21 - 25 and 27 - 31 of the immediately opposite areas of both coils 1, 4 alternately shortened and lengthened, so that a shortened barrier of a coil opposite to an extended barrier of the other coil and a coil on an extended barrier shortened barrier follows. Overlap areas between the barriers of the adjacent coils 1, 4 result. Such an axial approach of the two coils 1, 4 can be achieved without any barrier contact. The barrier protrusion B of an extended barrier corresponds to the barrier protrusion B of the embodiment according to Fig. 4 , A shortened barrier 21, 28, 23, 30, 25 is immediately opposite an extended barrier 27, 22, 29, 24, 31, without touching the opposite barriers. Advantageously results in comparison to the axial distance A1 (see Fig. 4 ) reduced axial distance A2. Accordingly, there is a reduced core leg length L2.

In Fig. 3 ist ein seitlicher Schnitt durch eine beispielhafte Anordnung mit mindestens zwei Spulen gemäß dem Stand der Technik dargestellt. Es ist ein Kernschenkel 7 zu erkennen, auf welchem eine erste Spule 1 und eine zweite Spule 4 axial übereinander angeordnet sind. Die erste Spule 1 weist zwei radial übereinander angeordnete Wicklungen 2, 3 auf, wobei Wicklung 2 auch als innere Wicklung und Wicklung 3 auch als äußere Wicklung bezeichnet werden. Die zweite Spule 4 weist zwei radial übereinander angeordnete Wicklungen 5, 6 auf, wobei Wicklung 5 auch als innere Wicklung und Wicklung 6 auch als äußere Wicklung bezeichnet werden.In Fig. 3 is a side sectional view of an exemplary arrangement with at least two coils according to the prior art shown. It can be seen a core leg 7, on which a first coil 1 and a second coil 4 are arranged axially above one another. The first coil 1 has two windings 2, 3 arranged radially one above the other, winding 2 also being referred to as an inner winding and winding 3 also as an outer winding. The second coil 4 has two radially superposed windings 5, 6, wherein winding 5 are also referred to as inner winding and winding 6 as an outer winding.

Zwischen der inneren Wicklung 2 und der äußeren Wicklung 3 der ersten Spule 1 sind Barrieren 33, 36, 37, 40 und Isolationsringe als Barriere 34 / 35, 38 / 39 angeordnet, um einen elektrischen Überschlag zwischen den beiden Wicklungen 2, 3 zuverlässig zu verhindern. In ähnlicher Art und Weise sind zwischen der inneren Wicklung 5 und der äußeren Wicklung 6 der zweiten Spule 4 Barrieren 42, 45, 46, 49 und Isolationsringe als Barriere 43 / 44, 47 / 48 angeordnet, um einen elektrischen Überschlag zwischen den beiden Wicklungen 5, 6 zuverlässig zu verhindern. Die Isolationsringe 34 / 35 greifen zusätzlich um die senkrecht zur Wicklungsachse W angeordneten Stirnflächen der inneren Wicklung 2, die Isolationsringe 38 / 39 greifen zusätzlich um die senkrecht zur Wicklungsachse W angeordneten Stirnflächen der äußeren Wicklung 3, die Isolationsringe 43 / 44 greifen zusätzlich um die Stirnfläche der inneren Wicklung 5, die Isolationsringe 47 / 48 greifen zusätzlich um die Stirnfläche der äußeren Wicklung 6. Vorteilhaft ergibt sich ein im Vergleich zum axialen Abstand A1 (siehe Fig. 4) verringerter axialer Abstand A3. Dementsprechend ergibt sich eine reduzierte Kernschenkellänge L3.Between the inner winding 2 and the outer winding 3 of the first coil 1 barriers 33, 36, 37, 40 and insulating rings as a barrier 34/35, 38/39 are arranged to reliably prevent electrical flashover between the two windings 2, 3 , Similarly, between the inner coil 5 and the outer coil 6 of the second coil 4, barriers 42, 45, 46, 49 and insulating rings are arranged as barrier 43/44, 47/48 to form an electrical flashover between the two coils 5 6 to prevent reliable. The insulation rings 34/35 additionally engage around the end faces of the inner winding 2 arranged perpendicular to the winding axis W, the insulation rings 38/39 additionally engage around the end faces of the outer winding 3 arranged perpendicular to the winding axis W, the insulation rings 43/44 additionally engage around the end face the inner winding 5, the insulation rings 47/48 additionally engage around the end face of the outer winding 6. Advantageously, results in comparison to the axial distance A1 (see Fig. 4 ) reduced axial distance A3. Accordingly, there is a reduced core leg length L3.

Ganz allgemein gilt für die vorstehend erläuterten Ausführungsformen und Beispiele:

  • Die vorstehend beschriebenen Maßnahmen sind für Spulen 1, 4 mit kreisrundem, ovalem oder rechteckigem Querschnitt anwendbar.
  • Die Barrieren 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 sind aus einem elektrisch isolierenden Kunststoff ausgebildet.
  • Die Barrieren 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 benachbarter Spulen 1, 4 sollen sich nicht berühren, damit kein durchgehender Kriechweg an dieser Stelle bereitgestellt wird.
  • Die Barrieren 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 können in die Spule 1, 4 mit eingewickelt werden und folgen damit automatisch der Spulenform. Die Barrieren 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 können andererseits auch als vorgeformte Bauteile - jeweils angepasst an Form und
In general, for the embodiments and examples explained above:
  • The measures described above are applicable to coils 1, 4 with circular, oval or rectangular cross-section.
  • The barriers 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 are formed of an electrically insulating plastic.
  • The barriers 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 adjacent coils 1, 4 should not touch, so that no continuous creepage path is provided at this point.
  • The barriers 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 can be wrapped in the coil 1, 4 with and thus automatically follow the coil shape. On the other hand, the barriers 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 can also be adapted as preformed components - in each case adapted to the shape and

Abmessungen der Spule 1, 4 - ausgebildet sein.

  • Zwischen der inneren Wicklung 2, 5, den einzelnen Barrieren 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 und der äußeren Wicklung 3, 6 können Leisten angeordnet sein, um längs des Umfangs definierte Abstände zu erhalten.
  • Die Zeichnungen sind gewissermaßen verzerrt, um das erfindungsgemäße Prinzip darzustellen und nicht maßstabsgetreu bezüglich der Abmessungen einer Spule / Wicklung und der dargestellten Abstände zwischen den Wicklungen.
  • Bei den vorstehend behandelten Ausführungsformen und Beispielen sind beispielhaft jeweils fünf Barrieren eingesetzt. Der Barrierenanzahl ist nach oben keine Grenze gesetzt. Die Ausführungsform nach Figur 1 ist bereits bei einer einzigen Barriere funktionsfähig, die Ausführungsform nach der Figur 2 und das Beispiel nach der Figur 3 sind bereits bei zwei Barrieren funktionsfähig.
  • Selbstverständlich sind bei der Konfiguration der Barrieren auch Kombinationen der vorstehenden Ausführungsformen und Beispiele realisierbar. Insbesondere ist das Beispiel gemäß Fig. 3 hinsichtlich der im mittleren Bereich zwischen den Wicklungen angeordneten Barrieren mit den Ausführungsformen gemäß Figur 1 oder Figur 2 kombinierbar.
Dimensions of the coil 1, 4 - be formed.
  • Between the inner winding 2, 5, the individual barriers 9 - 13, 15 - 19, 21 - 25, 27 - 31, 33 - 40, 42 - 49 and the outer winding 3, 6 strips may be arranged to along the circumference to get defined distances.
  • The drawings are to some extent distorted to illustrate the principle of the invention and not to scale with respect to the dimensions of a coil / winding and the distances shown between the windings.
  • In the embodiments and examples discussed above, five barriers are used by way of example. The number of barriers has no upper limit. The embodiment according to FIG. 1 is already functional at a single barrier, the embodiment according to the FIG. 2 and the example after the FIG. 3 are already functional at two barriers.
  • Of course, in the configuration of the barriers, combinations of the above embodiments and examples can be realized. In particular, the example is according to Fig. 3 with respect to the middle between the windings arranged barriers with the embodiments according to FIG. 1 or FIG. 2 combined.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
erste Spulefirst coil
22
innere Wicklung der ersten Spuleinner winding of the first coil
33
äußere Wicklung der ersten Spuleouter winding of the first coil
44
zweite Spulesecond coil
55
innere Wicklung der zweiten Spuleinner winding of the second coil
66
äußerer Wicklung der zweiten Spuleouter winding of the second coil
77
Kernschenkelcore leg
88th
--
99
Barrierebarrier
1010
Barrierebarrier
1111
Barrierebarrier
1212
Barrierebarrier
1313
Barrierebarrier
1414
--
1515
Barrierebarrier
1616
Barrierebarrier
1717
Barrierebarrier
1818
Barrierebarrier
1919
Barrierebarrier
2020
--
2121
Barrierebarrier
2222
Barrierebarrier
2323
Barrierebarrier
2424
Barrierebarrier
2525
Barrierebarrier
2626
--
2727
Barrierebarrier
2828
Barrierebarrier
2929
Barrierebarrier
3030
Barrierebarrier
3131
Barrierebarrier
3232
--
3333
Barrierebarrier
3434
Isolationsring als BarriereIsolation ring as a barrier
3535
Isolationsring als BarriereIsolation ring as a barrier
3636
Barrierebarrier
3737
Barrierebarrier
3838
Isolationsring als BarriereIsolation ring as a barrier
3939
Isolationsring als BarriereIsolation ring as a barrier
4040
Barrierebarrier
4141
--
4242
Barrierebarrier
4343
Isolationsring als BarriereIsolation ring as a barrier
4444
Isolationsring als BarriereIsolation ring as a barrier
4545
Barrierebarrier
4646
Barrierebarrier
4747
Isolationsring als BarriereIsolation ring as a barrier
4848
Isolationsring als BarriereIsolation ring as a barrier
4949
Barrierebarrier
5050
--
5151
Barrierebarrier
5252
Barrierebarrier
A1, A2, A3A1, A2, A3
axialer Abstand zwischen zwei Spulenaxial distance between two coils
BB
BarrierenüberstandBarriers supernatant
L1, L2, L3L1, L2, L3
KernschenkellängeCore leg length
UU
Überlappungsbereicheoverlapping areas
WW
Wicklungsachsewinding axis

Claims (5)

  1. Arrangement comprising at least two coils (1,4) arranged axially one above the other on a common core limb (7), wherein each coil has at least two windings (2, 3, 5, 6) arranged radially one above the other and barriers are provided between the windings (2, 3, 5, 6), characterized in that the barriers (9 - 13, 15 - 19) of adjacent coils (1, 4) are radially offset with respect to one another, and in that the edge regions of the barriers (9 - 13, 15 - 19) engage in one another in a comb-like manner.
  2. Arrangement comprising at least two coils (1,4) arranged axially one above the other on a common core limb (7), wherein each coil has at least two windings (2, 3, 5, 6) arranged radially one above the other and barriers are provided between the windings (2, 3, 5, 6), characterized in that the barriers (21 - 25, 27 - 31) of the mutually directly opposite areas of adjacent coils (1, 4) are alternately shortened and lengthened, with the result that a shortened barrier (21, 23, 25) of the one coil (1) always lies opposite a lengthened barrier (27, 29, 31) of the other coil (4) and, conversely, a lengthened barrier (22, 24) of the one coil (1) always lies opposite a shortened barrier (28, 30) of the other coil (4) and, in each coil (1, 4), a shortened barrier always follows a lengthened barrier.
  3. Arrangement according to either one of Claims 1 and 2, characterized in that the barriers (9 - 13, 15 - 19, 21 - 25, 27 - 31) are wound into the coil (1, 4) and therefore automatically follow the shape of the coil.
  4. Arrangement according to either one of Claims 1 and 2, characterized in that the barriers (9 - 13, 15 - 19, 21 - 25, 27 - 31) are designed as pre-formed components, in each case matched to the shape and dimensions of the coil (1, 4).
  5. Arrangement according to either one of Claims 1 and 2, characterized in that blocks are arranged between the inner winding (2, 5), the individual barriers (9 - 13, 15 - 19, 21 - 25, 27 - 31) and the outer winding (3, 6) in order to maintain defined spacings along the circumference.
EP10003059.2A 2010-03-23 2010-03-23 Assembly with at least two coils axially stacked on the same core leg Active EP2369602B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
PL10003059T PL2369602T3 (en) 2010-03-23 2010-03-23 Assembly with at least two coils axially stacked on the same core leg
ES10003059T ES2415909T3 (en) 2010-03-23 2010-03-23 Arrangement with at least two coils arranged axially one above the other in a common core arm
EP10003059.2A EP2369602B1 (en) 2010-03-23 2010-03-23 Assembly with at least two coils axially stacked on the same core leg
RU2012144801/07A RU2564403C2 (en) 2010-03-23 2011-03-09 System with at least two coils placed in axial direction over each other at common core rod
CN201180014947.2A CN102792397B (en) 2010-03-23 2011-03-09 There is the device that is arranged in stackedly up and down in the axial direction at least two coils on common stem stem
PCT/EP2011/001155 WO2011116884A1 (en) 2010-03-23 2011-03-09 Arrangement having at least two coils which are arranged axially one above the other on a common core limb
KR1020127024782A KR101819034B1 (en) 2010-03-23 2011-03-09 Arrangement having at least two coils which are arranged axially one above the other on a common core limb
JP2013500363A JP5745612B2 (en) 2010-03-23 2011-03-09 Device having at least two coils arranged axially up and down on a common core rim
BR112012024201-6A BR112012024201B1 (en) 2010-03-23 2011-03-09 arrangement with at least two coils axially placed on a common central flank
US13/624,529 US9449755B2 (en) 2010-03-23 2012-09-21 Arrangement having at least two coils which are arranged axially one above the other on a common core limb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10003059.2A EP2369602B1 (en) 2010-03-23 2010-03-23 Assembly with at least two coils axially stacked on the same core leg

Publications (2)

Publication Number Publication Date
EP2369602A1 EP2369602A1 (en) 2011-09-28
EP2369602B1 true EP2369602B1 (en) 2013-05-29

Family

ID=42551505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10003059.2A Active EP2369602B1 (en) 2010-03-23 2010-03-23 Assembly with at least two coils axially stacked on the same core leg

Country Status (10)

Country Link
US (1) US9449755B2 (en)
EP (1) EP2369602B1 (en)
JP (1) JP5745612B2 (en)
KR (1) KR101819034B1 (en)
CN (1) CN102792397B (en)
BR (1) BR112012024201B1 (en)
ES (1) ES2415909T3 (en)
PL (1) PL2369602T3 (en)
RU (1) RU2564403C2 (en)
WO (1) WO2011116884A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108010689A (en) * 2018-02-05 2018-05-08 国网河南省电力公司新乡供电公司 A kind of dry-type transformer

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US2339625A (en) * 1941-12-12 1944-01-18 Gen Electric Electric apparatus
US2359544A (en) * 1942-11-28 1944-10-03 Gen Electric Insulated coil
US2924799A (en) * 1957-06-21 1960-02-09 Mc Graw Edison Co Electrical induction apparatus having graded insulation
DE1180054B (en) * 1961-11-23 1964-10-22 Licentia Gmbh Process for the production of angle rings for transformers and choke coils that slide between two insulating cylinders
US3699488A (en) * 1972-02-28 1972-10-17 Allis Chalmers Distribution transformer having static shield
JPS49145117U (en) * 1973-04-13 1974-12-14
JPS556109Y2 (en) * 1975-09-19 1980-02-12
SU739664A1 (en) * 1977-06-07 1980-06-05 Предприятие П/Я В-8833 Induction device winding
DE2850190A1 (en) * 1978-11-18 1980-05-29 Licentia Gmbh High dielectric strength HV transformer - uses inter-connecting combs to form half-shells for accommodating coil bobbins
JPS55115021U (en) * 1979-02-09 1980-08-13
JPS59123216A (en) * 1982-12-28 1984-07-17 Toshiba Corp Equipment for manufacturing multi-layer winding coil
JPS6146719U (en) * 1984-08-31 1986-03-28 株式会社 富士電機総合研究所 Mold winding of stationary induction appliances
JPH01270306A (en) * 1988-04-22 1989-10-27 Mitsubishi Electric Corp Bobbin for winding
JP2668545B2 (en) * 1988-04-26 1997-10-27 株式会社キジマ Electric winding parts
JPH01179422U (en) * 1988-06-07 1989-12-22
JPH08236384A (en) * 1995-02-27 1996-09-13 Hitachi Ltd Manufacture of transformer winding
JP2002270439A (en) * 2001-03-13 2002-09-20 Fdk Corp Transformer
DE10238521B4 (en) * 2002-08-16 2006-01-19 Siemens Ag winding arrangement
DE102005015785A1 (en) * 2005-04-01 2006-11-16 Siemens Ag Transformer with electrical shielding
TWI280720B (en) * 2006-02-10 2007-05-01 Yujing Technology Co Ltd Constant frequency electric power supply apparatus
CN200953270Y (en) * 2006-09-08 2007-09-26 中电电气集团有限公司 Transformer sectional multilayer solenoid type coil structure
CN201117403Y (en) * 2007-11-02 2008-09-17 中电电气集团有限公司 Transformer sectional foil coil

Also Published As

Publication number Publication date
RU2564403C2 (en) 2015-09-27
KR101819034B1 (en) 2018-02-28
RU2012144801A (en) 2014-05-10
BR112012024201A2 (en) 2016-07-05
CN102792397A (en) 2012-11-21
JP2013522919A (en) 2013-06-13
US9449755B2 (en) 2016-09-20
PL2369602T3 (en) 2013-10-31
CN102792397B (en) 2016-05-25
JP5745612B2 (en) 2015-07-08
EP2369602A1 (en) 2011-09-28
US20130021130A1 (en) 2013-01-24
ES2415909T3 (en) 2013-07-29
WO2011116884A1 (en) 2011-09-29
BR112012024201B1 (en) 2019-11-12
KR20130006635A (en) 2013-01-17

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