EP0077487A1 - Noyau de fer pour transformateurs - Google Patents

Noyau de fer pour transformateurs Download PDF

Info

Publication number
EP0077487A1
EP0077487A1 EP82109161A EP82109161A EP0077487A1 EP 0077487 A1 EP0077487 A1 EP 0077487A1 EP 82109161 A EP82109161 A EP 82109161A EP 82109161 A EP82109161 A EP 82109161A EP 0077487 A1 EP0077487 A1 EP 0077487A1
Authority
EP
European Patent Office
Prior art keywords
core
iron core
laminated cores
yokes
sheet metal
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
EP82109161A
Other languages
German (de)
English (en)
Other versions
EP0077487B1 (fr
Inventor
Rudolf Dr. Dipl.-Ing. Zahorka
Richard Dr. Dipl.-Ing. Pfeiffer
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.)
Transformatoren Union AG
Original Assignee
Transformatoren Union AG
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 Transformatoren Union AG filed Critical Transformatoren Union AG
Priority to AT82109161T priority Critical patent/ATE19322T1/de
Publication of EP0077487A1 publication Critical patent/EP0077487A1/fr
Application granted granted Critical
Publication of EP0077487B1 publication Critical patent/EP0077487B1/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
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented

Definitions

  • the invention relates to iron cores for transformers made of very thin sheet metal lamellae, for example of amorphous material with very low magnetic loss losses.
  • the iron cores for transformers are usually constructed from cold-rolled, grain-oriented core sheets.
  • the core sheets are mortised so that the joints are offset from one another in layers.
  • the magnetic directional sensitivity of the cold-rolled core sheets necessitates careful individual sheet nesting in order to keep the magnetic loss, especially at the core corners and nodes, small.
  • the sheets are often also stacked on top of one another in pairs, with a relatively small increase in the magnetic reversal losses.
  • the joints are designed with 90 ° spigot or with 45 ° spigot.
  • the invention is based on the object of specifying a core structure for the use of core sheets with a very small sheet thickness and with extremely low magnetic reversal losses, which permits technically satisfactory and economical production even of very large transformer cores.
  • this object is achieved in that a large number of sheet metal lamellas are firmly joined to form column-shaped, self-supporting sheet metal packs that are self-supporting, that the core legs and the yokes are each composed of a plurality of sheet metal packs lying against one another, and that the sheet metal packs at the nodes between the core legs and the yokes interlock like a brick wall.
  • the sheet metal lamellae are advantageously glued together within a sheet metal stack.
  • all laminated cores have the same rectangular cross section and only represent different cuboids with regard to their length, and all butt joints between the laminated cores at the nodes are either perpendicular or parallel to the core leg axes.
  • This version is particularly useful for materials without a preferred magnetic direction, especially for amorphous materials.
  • the laminated cores each forming a core leg, superimposed in the correct position serve as a winding core for an associated winding and that this winding holds the laminated cores together as a bandage.
  • the Sheet packs of both yokes are only inserted into the corresponding cutouts in the core pieces after all the windings have been applied to the core pieces, and the sheet packs are held together in the nodes by gluing or other mechanical devices.
  • the core structure according to the invention from column-shaped laminated cores allows, in a very advantageous manner, prefabrication of these very robust and relatively insensitive assemblies also from very thin sheet metal, which is relatively sensitive in itself, so that large transformer cores, for example from amorphous metal sheets developed recently, can be economically constructed Material with very low magnetic loss is made possible.
  • Sheet packs 1 are assembled in a manner not shown from a plurality of very thin sheet metal lamellae of the same size and have the shape of cuboids.
  • the laminations are made of amorphous, ferromagnetic material and are considerably thinner than laminations made of grain-oriented transformer sheet.
  • All laminated cores 1 of core legs 3 and yokes 2 of the same iron core preferably have the same cross section, in the illustrated embodiment an elongated rectangle.
  • the core legs 3 and the yokes 2 are composed of laminated cores 1 of different lengths and / or offset in the longitudinal direction.
  • iron forms at the nodes Core alternately a sheet metal package 1 a pin and the next sheet metal package 1 with its end face the bottom of a groove.
  • the core legs 3 are mortised at the junctions with the yokes 2, all butt joints between adjacent laminated cores 1 being either parallel or at right angles to the core leg axes.
  • a small air gap is provided between the end faces of a sheet metal compact 1, which each represent the base of a groove, and the peg engaging in this groove.
  • the laminations in the individual laminated cores 1 are glued to one another or are held together by bolts made of preferably non-magnetic material and thereby form building blocks for the iron cores of transformers which can be produced in a prefabrication.
  • the mechanical cohesion of the laminated cores 1 in the core legs 3 and the yokes 2 takes place in a conventional manner in a press frame, inter alia with the aid of press iron and bandages.
  • the pressing force for the cohesion of the laminated cores 1 in the individual core legs 3 can advantageously be taken over by transformer windings applied directly to the core legs.
  • both the laminated cores 1 of the lower and of the upper yoke are then mortised with the ends of the core legs 3 after the windings have been applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Soft Magnetic Materials (AREA)
  • Fish Paste Products (AREA)
EP82109161A 1981-10-16 1982-10-04 Noyau de fer pour transformateurs Expired EP0077487B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82109161T ATE19322T1 (de) 1981-10-16 1982-10-04 Eisenkern fuer transformatoren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813141206 DE3141206A1 (de) 1981-10-16 1981-10-16 Eisenkern fuer transformatoren
DE3141206 1981-10-16

Publications (2)

Publication Number Publication Date
EP0077487A1 true EP0077487A1 (fr) 1983-04-27
EP0077487B1 EP0077487B1 (fr) 1986-04-16

Family

ID=6144288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109161A Expired EP0077487B1 (fr) 1981-10-16 1982-10-04 Noyau de fer pour transformateurs

Country Status (3)

Country Link
EP (1) EP0077487B1 (fr)
AT (1) ATE19322T1 (fr)
DE (2) DE3141206A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014089977A1 (fr) * 2012-12-11 2014-06-19 吉林省电力有限公司电力科学研究院 Transformateur de courant de mesure haute tension de type spécial de classe 0.2ss
EP4030448A1 (fr) * 2021-01-15 2022-07-20 Hitachi Energy Switzerland AG Agencement de noyau, transformateur, procédé de production d'un agencement de noyau et procédé de production d'un transformateur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314337C1 (de) * 1993-04-30 1994-07-28 Siemens Ag Verfahren und Anordnung zum Einschichten von Transformatorkernblechen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1365569A (en) * 1921-01-11 Electromagnetic apparatus
FR514079A (fr) * 1920-04-19 1921-03-02 Joseph Armand Marie Vincent De Mode de construction des carcasses de transformateurs électriques et appareils analogues
DE509621C (de) * 1930-10-10 Aeg Eisenkern fuer elektrische Transformatoren, der aus Paketen von Einzelblechen besteht und dessen Jochpakete in die Schenkelpakete eingeschichtet sind
DE2151960A1 (de) * 1971-10-19 1973-04-26 Ceag Dominit Ag Transformator
DE2640612A1 (de) * 1976-09-09 1978-03-16 Siemens Ag Tauchankermagnetsystem
US4201837A (en) * 1978-11-16 1980-05-06 General Electric Company Bonded amorphous metal electromagnetic components

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1365569A (en) * 1921-01-11 Electromagnetic apparatus
DE509621C (de) * 1930-10-10 Aeg Eisenkern fuer elektrische Transformatoren, der aus Paketen von Einzelblechen besteht und dessen Jochpakete in die Schenkelpakete eingeschichtet sind
FR514079A (fr) * 1920-04-19 1921-03-02 Joseph Armand Marie Vincent De Mode de construction des carcasses de transformateurs électriques et appareils analogues
DE2151960A1 (de) * 1971-10-19 1973-04-26 Ceag Dominit Ag Transformator
DE2640612A1 (de) * 1976-09-09 1978-03-16 Siemens Ag Tauchankermagnetsystem
US4201837A (en) * 1978-11-16 1980-05-06 General Electric Company Bonded amorphous metal electromagnetic components

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WESTINGHOUSE ENGINEER, Band 29, Nr. 5, September 1969, Seite 158, *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014089977A1 (fr) * 2012-12-11 2014-06-19 吉林省电力有限公司电力科学研究院 Transformateur de courant de mesure haute tension de type spécial de classe 0.2ss
US9431170B2 (en) 2012-12-11 2016-08-30 Jilin Province Electric Power Reserch Institute 0.2Ss class special-type high-voltage measuring current transformer
EP4030448A1 (fr) * 2021-01-15 2022-07-20 Hitachi Energy Switzerland AG Agencement de noyau, transformateur, procédé de production d'un agencement de noyau et procédé de production d'un transformateur
WO2022152890A1 (fr) * 2021-01-15 2022-07-21 Hitachi Energy Switzerland Ag Agencement de noyau, transformateur, procédé de fabrication d'un agencement de noyau et procédé de fabrication d'un transformateur

Also Published As

Publication number Publication date
EP0077487B1 (fr) 1986-04-16
ATE19322T1 (de) 1986-05-15
DE3270655D1 (en) 1986-05-22
DE3141206A1 (de) 1983-04-28

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