EP0388930A1 - Noyau E-I avec entrefer - Google Patents

Noyau E-I avec entrefer Download PDF

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Publication number
EP0388930A1
EP0388930A1 EP90105359A EP90105359A EP0388930A1 EP 0388930 A1 EP0388930 A1 EP 0388930A1 EP 90105359 A EP90105359 A EP 90105359A EP 90105359 A EP90105359 A EP 90105359A EP 0388930 A1 EP0388930 A1 EP 0388930A1
Authority
EP
European Patent Office
Prior art keywords
core
air gap
legs
core according
grinding
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Withdrawn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
EP90105359A
Other languages
German (de)
English (en)
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.)
Vogt Electronic AG
Original Assignee
Vogt Electronic 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 Vogt Electronic AG filed Critical Vogt Electronic AG
Publication of EP0388930A1 publication Critical patent/EP0388930A1/fr
Withdrawn legal-status Critical Current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
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps

Definitions

  • the invention relates to an E-I core according to the introductory part of patent claim 1 and to a method for adjusting the air gap in an E-I core according to the invention.
  • air gaps are required in the E-I cores used there, which reduce the saturation magnetization of the E-I cores, which are preferably made of ferrite. These air gaps were realized either by removing the length of the middle leg of the E-part of the core or by intermediate layers on all three legs of the core.
  • the invention has for its object to provide an EI core according to the introductory part of claim 1, the production of which does not require any special grinding technique, in which the air gap is not in the area of the coil winding and which, if necessary, can also be designed in a simple manner can that stray fields are avoided on the outer legs.
  • the air gap is embedded in the I part thereof, which, e.g. with ferrite as the core material by a corresponding pressing and sintering process can be realized very easily without additional costs.
  • the associated E-part of the core can be produced in the known manner, the pole faces of the legs being made plane-parallel by simple grinding.
  • the invention also provides a method for simple, very precise adjustment of the air gap in an EI core according to the invention. This method is characterized in claims 5 and 6.
  • the height of the air gap can then be adapted to the requirements by removing material from the pole faces of the I part of the core, preferably simply by grinding these surfaces, if the air gap is initially chosen to be larger than required.
  • 1 denotes the air gap
  • 2 the I part of the core
  • 3 the E part.
  • the air gap 1 is predetermined in the I part of the core and is located here in the area opposite the middle leg of the E part 3.
  • the core parts 2 and 3 are first made in a known manner, e.g. with ferrite as the core material, produced by pressing and sintering, the air gap 1 being given an excess for the time being. Then the pole faces of the E part and the pole faces of the I part lying on the outer legs of the E part are made plane-parallel by simple grinding. When grinding the pole faces of the I part, so much material is removed until the air gap has reached the intended height, which can be achieved very easily and with great accuracy in this way.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
EP90105359A 1989-03-23 1990-03-21 Noyau E-I avec entrefer Withdrawn EP0388930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893909624 DE3909624A1 (de) 1989-03-23 1989-03-23 E-i - kern mit luftspalt
DE3909624 1989-03-23

Publications (1)

Publication Number Publication Date
EP0388930A1 true EP0388930A1 (fr) 1990-09-26

Family

ID=6377077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105359A Withdrawn EP0388930A1 (fr) 1989-03-23 1990-03-21 Noyau E-I avec entrefer

Country Status (2)

Country Link
EP (1) EP0388930A1 (fr)
DE (1) DE3909624A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2264397A (en) * 1992-02-20 1993-08-25 Gen Electric Low-profile multi-post magnetic core and gap arrangement
EP0779633A1 (fr) * 1995-06-30 1997-06-18 Hitachi Metals, Ltd. Noyau magnetique
WO2002025677A2 (fr) * 2000-09-20 2002-03-28 Ascom Energy Systems Ag, Berne Element inductif plat
WO2009121627A2 (fr) * 2008-04-04 2009-10-08 Vogt Electronic Components Gmbh Composant inductif pour la commande de luminaires
WO2015189245A1 (fr) * 2014-06-11 2015-12-17 SUMIDA Components & Modules GmbH Procédé de formation d'un noyau en forme de cadre à branche centrale pour composant inductif et noyau en forme de cadre produit de manière correspondante
US11670444B2 (en) * 2018-06-05 2023-06-06 Abb Power Electronics Inc. Integrated magnetic assemblies and methods of assembling same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1597508A (en) * 1976-12-23 1981-09-09 Licentia Gmbh E-cores
DE3318370A1 (de) * 1983-05-20 1984-11-22 Waasner, Bruno, 8550 Forchheim Blechschnitt aus zwei teilen und mit drei schenkeln
CH647090A5 (de) * 1979-05-19 1984-12-28 Philberth Karl Kernblech fuer mantelkerne, insbesondere fuer transformatoren.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451202A (en) * 1945-02-21 1948-10-12 Acme Electric Corp Laminated magnetic core and method of making

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1597508A (en) * 1976-12-23 1981-09-09 Licentia Gmbh E-cores
CH647090A5 (de) * 1979-05-19 1984-12-28 Philberth Karl Kernblech fuer mantelkerne, insbesondere fuer transformatoren.
DE3318370A1 (de) * 1983-05-20 1984-11-22 Waasner, Bruno, 8550 Forchheim Blechschnitt aus zwei teilen und mit drei schenkeln

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2264397A (en) * 1992-02-20 1993-08-25 Gen Electric Low-profile multi-post magnetic core and gap arrangement
US5414401A (en) * 1992-02-20 1995-05-09 Martin Marietta Corporation High-frequency, low-profile inductor
EP0779633A1 (fr) * 1995-06-30 1997-06-18 Hitachi Metals, Ltd. Noyau magnetique
EP0779633A4 (fr) * 1995-06-30 1998-09-30 Hitachi Metals Ltd Noyau magnetique
WO2002025677A2 (fr) * 2000-09-20 2002-03-28 Ascom Energy Systems Ag, Berne Element inductif plat
WO2002025677A3 (fr) * 2000-09-20 2002-09-06 Ascom Energy Systems Ag Berne Element inductif plat
US6967553B2 (en) 2000-09-20 2005-11-22 Delta Energy Systems (Switzerland) Ag Planar inductive element
WO2009121627A2 (fr) * 2008-04-04 2009-10-08 Vogt Electronic Components Gmbh Composant inductif pour la commande de luminaires
WO2009121627A3 (fr) * 2008-04-04 2009-12-10 Vogt Electronic Components Gmbh Composant inductif pour la commande de luminaires
WO2015189245A1 (fr) * 2014-06-11 2015-12-17 SUMIDA Components & Modules GmbH Procédé de formation d'un noyau en forme de cadre à branche centrale pour composant inductif et noyau en forme de cadre produit de manière correspondante
US10170240B2 (en) 2014-06-11 2019-01-01 SUMIDA Components & Modules GmbH Method for forming a frame core having a center leg for an inductive component and frame core produced accordingly
US11670444B2 (en) * 2018-06-05 2023-06-06 Abb Power Electronics Inc. Integrated magnetic assemblies and methods of assembling same

Also Published As

Publication number Publication date
DE3909624A1 (de) 1990-09-27

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