DE102008032799A1 - E-shaped core e.g. round core such as winding core, for power transformer, has sheet plates forming sheet plate packets and stacked on top of each other so that one of plates is laterally shifted in plane opposite to adjacent plates - Google Patents
E-shaped core e.g. round core such as winding core, for power transformer, has sheet plates forming sheet plate packets and stacked on top of each other so that one of plates is laterally shifted in plane opposite to adjacent plates Download PDFInfo
- Publication number
- DE102008032799A1 DE102008032799A1 DE200810032799 DE102008032799A DE102008032799A1 DE 102008032799 A1 DE102008032799 A1 DE 102008032799A1 DE 200810032799 DE200810032799 DE 200810032799 DE 102008032799 A DE102008032799 A DE 102008032799A DE 102008032799 A1 DE102008032799 A1 DE 102008032799A1
- Authority
- DE
- Germany
- Prior art keywords
- core
- plates
- sheet
- sheets
- stacked
- 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.)
- Withdrawn
Links
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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- 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
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- 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
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
Abstract
Description
Die Erfindung betrifft einen Transformator gemäß dem Oberbegriff des Anspruches 1 und dem Oberbegriff des Anspruches 4.The The invention relates to a transformer according to the preamble of the claim 1 and the preamble of claim 4.
In Verteil- und Leistungstransformatoren ist der Kern üblicherweise als Rechteck- oder Rundkern ausgeführt, wobei insbesondere ein Rechteckkern in geschichteter Bauweise aus einer Vielzahl von Blechen zusammengesetzt ist, wogegen ein Rundkern häufig als Wickelkern ausgeführt wird.In Distribution and power transformers is the core customary as a rectangle or Round core executed, in particular, a rectangular core in layered construction a plurality of sheets is composed, whereas a round core often as Winding core executed becomes.
Die Kühlung eines solchen Kernes ist dabei insbesondere abhängig von der zur Verfügung stehenden Kernoberfläche. Sowohl bei einem Rechteckkern als auch bei einem Rundkern ist diese Fläche durch den Kernumfang und die Höhe gegeben.The cooling Such a kernel depends in particular on the available one Core surface. This is the case for both a rectangular core and a round core area through the core circumference and the height given.
Aufgabe der Erfindung ist es, einen Transformator mit einem Kern der eingangs genannten Art zu schaffen, bei dem die Kühlung verbessert ist.task The invention is a transformer with a core of the above to create said type in which the cooling is improved.
Diese Aufgabe wird bei einem aus Blechen zusammengesetzten Kern für einen Transformator dadurch gelöst, dass die einzelnen Bleche derart übereinander gestapelt sind, dass wenigstens ein Blech gegenüber wenigstens einem benachbarten Blech in seiner Ebene seitlich verschoben ist.These Task is in a composite of sheets core for a Transformer solved by that the individual sheets are stacked on top of each other, that at least one sheet opposite moved laterally at least one adjacent sheet in its plane is.
Dadurch werden die Außenflächen und Innenflächen des Kerns vergrößert, indem die nach außen vorstehenden Abschnitte wie Kühlrippen wirken.Thereby be the outer surfaces and inner surfaces of the nucleus enlarged by the outside protruding sections such as cooling fins Act.
Es besteht die Möglichkeit, jeweils mehrere Bleche zu jeweils einem Blechpaket zusammenzusetzen, wobei die Bleche exakt übereinander liegen. Zur Erhöhung der Außenfläche können die Blechpakete jeweils gegeneinander verschoben sein, sodass die Blechpakete selbst Kühlrippen oder Kühlleisten bilden.It it is possible, in each case to assemble several sheets to form a laminated core, the sheets are exactly on top of each other lie. To increase the outer surface can the Sheet metal packages each shifted against each other, so that the laminated cores even cooling fins or form cooling bars.
Es besteht natürlich auch die Möglichkeit, dass jedes einzelne Kernblech gegenüber dem darunter liegenden um einen bestimmten Betrag verschoben wird, wodurch sich auch eine wellenförmige oder sägezahnförmige Kontur bilden könnte, wobei die Wellenberge oder die Sägezahnspitzen praktisch die Kühlleisten bilden.It of course exists also the possibility that every single core sheet opposite the underlying is shifted by a certain amount, which is also a wavy or sawtooth contour could make the wave crests or the sawtooth tips practically the cooling bars form.
Wenn der Kern aus Blechmaterial gewickelt ist, dann kann der Kern aus wenigstens zwei Teilabschnitten zusammengesetzt sein, die quer zueinander bzw. gegeneinander verschoben sind, wodurch sich auch hier die Außenfläche des Kerns vergrößert.If the core is made of sheet metal material, then the core can out be composed at least two sections, which are transverse to each other or are shifted from each other, whereby here again the outer surface of the Kerns enlarged.
Weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments and improvements of the invention are the dependent claims refer to.
Anhand der Zeichnung, in der einige Ausführungsbeispiele der Erfindung dargestellt sind, sollen die Erfindung sowie weitere vorteilhafte Ausführungen und weitere Vorteile näher erläutert und beschrieben werden.Based the drawing, in which some embodiments of the invention are shown, the invention and further advantageous versions and other advantages closer explained and described.
Es zeigen:It demonstrate:
Es
sei Bezug genommen auf die
In
dieser
Es
sei nun Bezug genommen auf die
Dort
ist der Schenkel
Die
Kühlung
des Kerns
Um
eine Erhöhung
der Kühlfläche, die
der Kühlfläche
Diese
Ausgestaltung ist sinnvollerweise am ehesten dort zu verwenden,
wo Bleche mit einer Blechdicke verwendet werden, die ausreichend
breite Rillen (siehe weiter unten) erzeugen können. Bei derzeit verwendeten
Blechen mit einer Blechdicke von ca. 0,15 bis 0,35 mm ist die jeweilige
Rille beziehungsweise der Schlitz
In
jedem Fall gilt, dass aufgrund der Verschiebung der Bleche
Um
eine ausreichende Breite der Schlitze
Die
Es
besteht natürlich
auch die Möglichkeit, wie
in der
Die
Die
Bemessung der Breite der Schlitze
Es
ist selbstverständlich,
dass eine Struktur ähnlich
der der
Es
besteht natürlich
auch die Möglichkeit, was
hier nicht näher
dargestellt ist, Kerne aus Wickelmaterial herzustellen; auch hier
ist es ohne weiteres möglich,
den einzelnen Kern aus mehreren, in axialer Richtung unterteilten
Kernabschnitten zu wickeln und diese Kernabschnitte in ähnlicher
Weise wie in der
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810032799 DE102008032799A1 (en) | 2008-07-11 | 2008-07-11 | E-shaped core e.g. round core such as winding core, for power transformer, has sheet plates forming sheet plate packets and stacked on top of each other so that one of plates is laterally shifted in plane opposite to adjacent plates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810032799 DE102008032799A1 (en) | 2008-07-11 | 2008-07-11 | E-shaped core e.g. round core such as winding core, for power transformer, has sheet plates forming sheet plate packets and stacked on top of each other so that one of plates is laterally shifted in plane opposite to adjacent plates |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008032799A1 true DE102008032799A1 (en) | 2010-01-14 |
Family
ID=41412801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810032799 Withdrawn DE102008032799A1 (en) | 2008-07-11 | 2008-07-11 | E-shaped core e.g. round core such as winding core, for power transformer, has sheet plates forming sheet plate packets and stacked on top of each other so that one of plates is laterally shifted in plane opposite to adjacent plates |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008032799A1 (en) |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE404582C (en) * | 1922-06-23 | 1924-10-23 | Bbc Brown Boveri & Cie | Sheet metal cut for transformers with yoke plates laminated into the leg ends |
DE1008817B (en) * | 1954-02-05 | 1957-05-23 | Siemens Ag | Rectangular magnetic core made of laminated sheet metal for electrical induction devices, especially transformers |
CH341896A (en) * | 1955-12-30 | 1959-10-31 | Oerlikon Maschf | Nested iron body for transformers |
DE1151868B (en) * | 1961-08-29 | 1963-07-25 | Bbc Brown Boveri & Cie | Arrangement for transformers to reduce the noise caused by magnetostriction |
FR2131107A5 (en) * | 1971-03-30 | 1972-11-10 | Alsthom Savoisienne | |
DE7730094U1 (en) * | 1976-10-06 | 1978-01-05 | Bicc Ltd., London | MAGNETIC CORE |
DE3145596A1 (en) * | 1980-12-01 | 1982-07-15 | Ganz Villamossági Müvek, 1024 Budapest | Transformers having a magnetic circuit which can be assembled and dismantled |
JPS57143807A (en) * | 1981-03-02 | 1982-09-06 | Daihen Corp | Iron core for stationary electrical equipment |
DE9202442U1 (en) * | 1992-02-21 | 1993-06-17 | Siemens Ag, 8000 Muenchen, De | |
DE19854902A1 (en) * | 1998-11-27 | 2000-02-17 | Siemens Ag | Transformer, especially cast resin transformer; has 30- 70% of metal sheets forming air gap through division of their cross-section in side part of core |
WO2000049629A1 (en) * | 1999-02-16 | 2000-08-24 | Square D Company | Energy efficient hybrid core |
-
2008
- 2008-07-11 DE DE200810032799 patent/DE102008032799A1/en not_active Withdrawn
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE404582C (en) * | 1922-06-23 | 1924-10-23 | Bbc Brown Boveri & Cie | Sheet metal cut for transformers with yoke plates laminated into the leg ends |
DE1008817B (en) * | 1954-02-05 | 1957-05-23 | Siemens Ag | Rectangular magnetic core made of laminated sheet metal for electrical induction devices, especially transformers |
CH341896A (en) * | 1955-12-30 | 1959-10-31 | Oerlikon Maschf | Nested iron body for transformers |
DE1151868B (en) * | 1961-08-29 | 1963-07-25 | Bbc Brown Boveri & Cie | Arrangement for transformers to reduce the noise caused by magnetostriction |
FR2131107A5 (en) * | 1971-03-30 | 1972-11-10 | Alsthom Savoisienne | |
DE7730094U1 (en) * | 1976-10-06 | 1978-01-05 | Bicc Ltd., London | MAGNETIC CORE |
DE3145596A1 (en) * | 1980-12-01 | 1982-07-15 | Ganz Villamossági Müvek, 1024 Budapest | Transformers having a magnetic circuit which can be assembled and dismantled |
JPS57143807A (en) * | 1981-03-02 | 1982-09-06 | Daihen Corp | Iron core for stationary electrical equipment |
DE9202442U1 (en) * | 1992-02-21 | 1993-06-17 | Siemens Ag, 8000 Muenchen, De | |
DE19854902A1 (en) * | 1998-11-27 | 2000-02-17 | Siemens Ag | Transformer, especially cast resin transformer; has 30- 70% of metal sheets forming air gap through division of their cross-section in side part of core |
WO2000049629A1 (en) * | 1999-02-16 | 2000-08-24 | Square D Company | Energy efficient hybrid core |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110201 |