EP1655747A3 - Cut of sheet metal for a laminated transformer core - Google Patents

Cut of sheet metal for a laminated transformer core Download PDF

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Publication number
EP1655747A3
EP1655747A3 EP05024116A EP05024116A EP1655747A3 EP 1655747 A3 EP1655747 A3 EP 1655747A3 EP 05024116 A EP05024116 A EP 05024116A EP 05024116 A EP05024116 A EP 05024116A EP 1655747 A3 EP1655747 A3 EP 1655747A3
Authority
EP
European Patent Office
Prior art keywords
sheet metal
yoke
metal part
windows
cut
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Withdrawn
Application number
EP05024116A
Other languages
German (de)
French (fr)
Other versions
EP1655747A2 (en
Inventor
Gerhard König
Manfred Hochfeld
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.)
Pulse GmbH and Co KG
Original Assignee
Era & Co KG 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 Era & Co KG GmbH filed Critical Era & Co KG GmbH
Publication of EP1655747A2 publication Critical patent/EP1655747A2/en
Publication of EP1655747A3 publication Critical patent/EP1655747A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • 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
    • H01F27/28—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

Landscapes

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

Abstract

Die Erfindung betrifft einen Blechschnitt für einen geschichteten Kern eines Transformators mit einem ersten Blechteil, das eine E-förmige Grundform hat und das ein erstes Joch (34;66), zwei Außenschenkel (26,28;62,64) und einen Mittelschenkel (30) einer Schicht des Kems bildet. Der Blechschnitt umfasst ein zweites Blechteil (32,70), das eine I-förmige Grundform hat und das ein zweites Joch der Schicht des Kerns bildet. Im zusammengesetzten Zustand des ersten und des zweiten Blechteils stoßen die freien Enden der Schenkel des ersten Blechteils gegen eine Längsseite des Jochs des zweiten Blechteils, so dass zwei Fenster mit rechteckiger Grundform gebildet werden, die von den Schenkeln und Jochen begrenzt werden. Zumindest im ersten Joch und im zweiten Joch ist mindestens jeweils eine Ausnehmung (36,40,42,46,54;68,72) in einem Teilbereich jedes der Fenster vorgesehen, durch die die Fläche der Fenster jeweils vergrößert ist.

Figure imgaf001
Figure imgaf002
The invention relates to a sheet metal section for a layered core of a transformer having a first sheet metal part which has an E-shaped basic shape and which has a first yoke (34, 66), two outer legs (26, 28, 62, 64) and a middle leg (30 ) forms a layer of the core. The sheet metal section comprises a second sheet metal part (32, 70) which has an I-shaped basic shape and forms a second yoke of the layer of the core. In the assembled state of the first and the second sheet metal part, the free ends of the legs of the first sheet metal part abut against a longitudinal side of the yoke of the second sheet metal part, so that two windows are formed with a rectangular basic shape, which are bounded by the legs and yokes. At least in each case in the first yoke and in the second yoke, at least one recess (36, 40, 42, 46, 54, 68, 72) is provided in a partial area of each of the windows, by which the area of the windows is increased in each case.
Figure imgaf001
Figure imgaf002
EP05024116A 2004-11-05 2005-11-04 Cut of sheet metal for a laminated transformer core Withdrawn EP1655747A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410053547 DE102004053547B4 (en) 2004-11-05 2004-11-05 Sheet metal cut for a layered core of a transformer

Publications (2)

Publication Number Publication Date
EP1655747A2 EP1655747A2 (en) 2006-05-10
EP1655747A3 true EP1655747A3 (en) 2007-01-17

Family

ID=35500753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05024116A Withdrawn EP1655747A3 (en) 2004-11-05 2005-11-04 Cut of sheet metal for a laminated transformer core

Country Status (2)

Country Link
EP (1) EP1655747A3 (en)
DE (1) DE102004053547B4 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2721012C (en) 2008-04-10 2017-03-07 Siemens Aktiengesellschaft Method for producing a transformer core and a transformer core

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461758A (en) * 1967-01-16 1969-08-19 Sola Basic Ind Inc Method of making scrapless laminations for producing a plurality of units
US3546571A (en) * 1968-06-21 1970-12-08 Varo Constant voltage ferroresonant transformer utilizing unequal area core structure
NL7004140A (en) * 1970-03-23 1971-09-27
DE2920365A1 (en) * 1979-05-19 1980-11-27 Philberth Karl Dr Phys CORE SHEET FOR SHELL CORES, ESPECIALLY FOR TRANSFORMERS
JPH05106549A (en) * 1991-04-15 1993-04-27 Danfoss As Gear-wheel-assembly and assembling method thereof
JPH08148353A (en) * 1994-11-22 1996-06-07 Tamura Seisakusho Co Ltd Reactor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB671823A (en) * 1948-02-06 1952-05-14 British Thomson Houston Co Ltd Improvements in and relating to punched magnetic core laminations for electric induction apparatus such as transformers
DE2650929C2 (en) * 1976-11-08 1983-10-13 Bertos AG, Glarus Ballast

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461758A (en) * 1967-01-16 1969-08-19 Sola Basic Ind Inc Method of making scrapless laminations for producing a plurality of units
US3546571A (en) * 1968-06-21 1970-12-08 Varo Constant voltage ferroresonant transformer utilizing unequal area core structure
NL7004140A (en) * 1970-03-23 1971-09-27
DE2920365A1 (en) * 1979-05-19 1980-11-27 Philberth Karl Dr Phys CORE SHEET FOR SHELL CORES, ESPECIALLY FOR TRANSFORMERS
JPH05106549A (en) * 1991-04-15 1993-04-27 Danfoss As Gear-wheel-assembly and assembling method thereof
JPH08148353A (en) * 1994-11-22 1996-06-07 Tamura Seisakusho Co Ltd Reactor

Also Published As

Publication number Publication date
DE102004053547A1 (en) 2006-05-11
EP1655747A2 (en) 2006-05-10
DE102004053547B4 (en) 2009-04-16

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