EP2500917A2 - Composant passif inductif, notamment bobine d'arrêt - Google Patents

Composant passif inductif, notamment bobine d'arrêt Download PDF

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Publication number
EP2500917A2
EP2500917A2 EP12001551A EP12001551A EP2500917A2 EP 2500917 A2 EP2500917 A2 EP 2500917A2 EP 12001551 A EP12001551 A EP 12001551A EP 12001551 A EP12001551 A EP 12001551A EP 2500917 A2 EP2500917 A2 EP 2500917A2
Authority
EP
European Patent Office
Prior art keywords
core
legs
leg
passive component
inductive passive
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Withdrawn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
EP12001551A
Other languages
German (de)
English (en)
Other versions
EP2500917A3 (fr
Inventor
Tilo Pechan
Klaus Seitenbecher
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.)
Roland Pechan & Co KG GmbH
Tridelta Weichferrite GmbH
Original Assignee
Roland Pechan & Co KG GmbH
Tridelta Weichferrite 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 Roland Pechan & Co KG GmbH, Tridelta Weichferrite GmbH filed Critical Roland Pechan & Co KG GmbH
Publication of EP2500917A2 publication Critical patent/EP2500917A2/fr
Publication of EP2500917A3 publication Critical patent/EP2500917A3/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Withdrawn legal-status Critical Current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
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • 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
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/346—Preventing or reducing leakage fields
    • 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
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F2027/348—Preventing eddy currents

Definitions

  • the invention relates according to the preamble of claim 1, a core for an inductive passive component, in particular throttle, which consists of at least two substantially mutually parallel and each consisting of a plurality of magnetizable leg portions legs, said legs at their two ends by a respective yoke connected to each other.
  • Such chokes are used in conjunction with capacitors as a sine-wave filter, for example in the form of a low-pass filter, for frequency converter.
  • the invention relates to a core for an inductance component having at least two legs arranged substantially parallel to one another, which are connected at their two ends by a yoke formed from I-cores having a rectangular cross-section, wherein the legs consist of a plurality of individual segments each separated by an insulator. The segments are glued to the insulators.
  • Characteristic of this invention is that the core is formed as a ferrite core and the cylindrical legs are formed by formed as a pressed ferrite tablets with a round or oval cross-section segments.
  • a disadvantage of this invention is that the insulators glued between the segments are present as separate components, which increases the production cost of the core sensitive. Since the thickness of the insulators decisively influences the effective permeability of the core and the inductance of the choke, therefore, increased demands are made on the Manufacturing accuracy of the isolators provided. In addition, eddy current losses occur in the current-carrying copper winding in the region of the insulators due to field line propagation, which leads to undesired heating of the reactor.
  • the object of the invention is now to propose a core for an inductive passive component, in particular choke, which generates less eddy current losses in a simple structure and is better suppressed.
  • the core for an inductive passive component in particular throttle, at least two substantially mutually parallel and each consisting of a plurality of magnetizable leg sections legs, wherein the legs are connected at their two ends by a respective yoke.
  • a spacer consisting of ferrite is provided, which is adhesively bonded in each case between the leg sections placed one behind the other in the longitudinal extension of the legs to form an adhesive joint, the effective cross-sectional area in the longitudinal extension of the legs of a spacer being between 0.1 and 20% of the cross-sectional area of a leg section in the longitudinal direction the thigh corresponds.
  • the dimensioning of the effective cross section of the spacer and its placement relative to the leg sections is dependent on the static requirements and the desired magnetic properties of the core.
  • the spacer is placed centered between the leg portions.
  • the spacer is in the form of a ring with a round or angular shape or as a body in the shape of a cylinder, an n-sided prism or a combination thereof.
  • leg sections and spacers together forming the leg complement each other to form a straight circular cylinder or an n-sided regular prism with-except for the area of the glued joints-a closed lateral surface.
  • a leg portion and a spacer are integrally formed, each leg portion each having a first end face with a flat end face and an opposite second end face with a protruding over the associated end face annular collar or edge, and in the assembled state of Leg is glued only the collar or edge of a leg portion with the flat end face of the respective adjacent leg portion.
  • each leg section in cooperation with the opposing end faces of the leg sections glued together, surround or delimit a geometrically defined air space, this air space serving as a storage of magnetic energy.
  • Each of the two legs has a symmetrical arrangement of leg portions, wherein the axis of symmetry either of the half height of the legs or the longitudinal axis of the legs corresponds.
  • a defined number x of leg sections and a number x-1 of spacers are provided for this purpose, wherein a leg section is placed exactly at half the height of the leg.
  • a plurality of integrally formed spacers and leg sections are used, wherein the collar or edge having end faces in the direction of half the height of the leg. Exactly at half the height of the leg, a leg section without edge or collar is placed.
  • annular collar or edge and the associated leg portion are integrally formed, wherein the collar or edge by non-cutting forming processes, such as pressing, or by cutting forming processes, such as drilling or milling, can be produced.
  • the individual leg portions and annular collar or edges, and thus also each of the two legs, are made of ferrite. Due to the fact that the collar or rim, which is raised in relation to the end face, also consists of ferrite, it saturates at greater modulation, with the effective permeability of the core falling to the calculated value.
  • the ferrite collar or ferrite edge in the saturation state acts as a "shielding ring" and reduces the eddy current losses caused by the stray magnetic field in the current-carrying conductor of the winding, which extends around the two legs.
  • Each of the two angularly formed in cross-section yokes consists of at least one core, wherein the use of multiple cores these front side glued directly to each other or each glued together by an inserted insulator.
  • the two legs may be bonded to the yokes using an insulator to reduce the effective permeability of the ferrite core.
  • the Fig. 1.1 shows a schematic side view of the core 1 in a first embodiment and the associated Fig. 1.2 A schematic side view of a spacer 9 placed between two leg sections 3.
  • the core 1 provided for an inductive passive component, in particular a choke consists of two legs 2 arranged parallel to one another and each consisting of several magnetizable leg sections 3, the legs 2 being at their two ends are glued together by a respective yoke 5.
  • one consisting of ferrite Spacer 9 is provided, which in each case between the longitudinal extent of the leg 2 successively placed leg portions 3 is glued to form an adhesive joint 8.
  • the effective cross-sectional area of each spacer 9 formed as a ring corresponds to between 0.1 to 20% of the cross-sectional area of a leg portion 3.
  • the Fig. 2.1 illustrates a schematic side view of the core 1 according to the invention in a second embodiment.
  • the core 1 provided for an inductive passive component, in particular a choke consists of two legs 2 arranged parallel to one another and each consisting of a plurality of magnetizable leg sections 3.
  • the longitudinal axes of the two parallel legs 2 lie in a common plane.
  • the legs 2 are each connected to each other using an insulator 4 at its two ends by a yoke 5 constructed of I-cores.
  • Each of the two yokes 5 consists of several standard I cores, which are glued together in two blocks and separated by an insulator 4.
  • the leg sections 3, which are placed one behind the other in the longitudinal extent of the legs 2, comprise with a view to the legs Figures 2.3 and 2.4 in each case a first end face 3.1 with a flat end face 3.2 and an opposite second end face 3.3 with an over the associated flat face 3.4 protruding annular collar or edge 3.5, wherein in the assembled state of the leg 2, only the collar or edge 3.5 of a leg portion 3 with the plane End face 3.2 of each adjacent leg portion 3 is glued.
  • the leg sections 3 in the assembled state complement one another to form a leg 2 with the formation of glued joints 8 with a closed lateral surface.
  • the two legs 2 are provided for the purpose of constructing a functional throttle each with a winding, not shown, of a current-carrying conductor. Close in the mounting state shown here or limit the annular collar or edge 3.5 each leg portion 3 in cooperation with the opposing end faces 3.2, 3.3, the leg portions 3 glued together a geometrically defined air space 6, which serves to store magnetic energy.
  • Each of the two legs 2 has a symmetrical arrangement of the leg sections 3, the axis of symmetry 7 corresponding to half the height of the respective legs 2.
  • FIG. 2.2 is a plan view of the second end face of a leg portion 3 by way of example for all leg sections 3 to remove.
  • Each individual, consisting of ferrite, leg portion 3 is circular in cross-section.
  • the edge region of the leg portion 3 has a relation to the associated end face 3.4 superior edge or collar, which limits the end face 3.4.
  • the Figures 2.3 and 2.4 show one and the same leg portion 3, in particular the Fig. 2.3 a sectional view along the section line AA illustrated and the Fig. 2.4 a schematic side view of the leg portion 3 represents.
  • the height of the collar or edge 3.5 of the second end face 3.3 of each leg section 3, which defines the frontal spacing of adjacent leg sections 3 in the assembled state, is in the illustrated example between 3 and 8 mm, preferably 5 mm.
  • the associated width of the collar or edge 3.5 of the second end face 3.3 of each leg section 3 is by way of example between 0.5 and 6 mm, preferably 4 mm.
  • a film layer of an adhesive is placed, which serves to connect each adjacent leg portions 3.
  • the film layer of the adhesive on the end face 3.2 of the first face 3.1 also only annularly, namely only in the area where the collar or edge 3.5 of the adjacent leg portion 3 is seated, applied or present.
  • a non-cutting forming process for example, presses, or a metal forming process, such as drilling or milling used in manufacturing technology.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Coils Or Transformers For Communication (AREA)
EP12001551.6A 2011-03-17 2012-03-07 Composant passif inductif, notamment bobine d'arrêt Withdrawn EP2500917A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202011004121U DE202011004121U1 (de) 2011-03-17 2011-03-17 Induktives passives Bauelement, insbesondere Drossel

Publications (2)

Publication Number Publication Date
EP2500917A2 true EP2500917A2 (fr) 2012-09-19
EP2500917A3 EP2500917A3 (fr) 2017-05-17

Family

ID=44312208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12001551.6A Withdrawn EP2500917A3 (fr) 2011-03-17 2012-03-07 Composant passif inductif, notamment bobine d'arrêt

Country Status (2)

Country Link
EP (1) EP2500917A3 (fr)
DE (1) DE202011004121U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9293245B2 (en) 2013-08-05 2016-03-22 Qualcomm Mems Technologies, Inc. Integration of a coil and a discontinuous magnetic core

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2677720T3 (es) * 2013-03-11 2018-08-06 Sts Spezial-Transformatoren-Stockach Gmbh & Co. Kg Componente inductivo
DE102013208058B4 (de) * 2013-05-02 2015-09-10 Sts Spezial-Transformatoren-Stockach Gmbh & Co. Kg Magnetisch vorgespannte Drossel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL23169C (fr) * 1927-03-23
DE1245487B (de) * 1963-05-24 1967-07-27 Westinghouse Electric Corp Verfahren zur Herstellung eines geblechten Eisenkernes fuer Transformatoren und Drosselspulen
NL7811481A (nl) * 1978-11-22 1980-05-27 Philips Nv Transformator met luchtspleet.
DE20112980U1 (de) 2001-08-13 2002-01-10 Kaiser, Christof, 78576 Emmingen-Liptingen Leitungssystem
DE50313456D1 (de) * 2003-07-23 2011-03-17 Sts Spezial Transformatoren Stockach Gmbh & Co Ferritkern für ein Induktivitätsbauteil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9293245B2 (en) 2013-08-05 2016-03-22 Qualcomm Mems Technologies, Inc. Integration of a coil and a discontinuous magnetic core

Also Published As

Publication number Publication date
EP2500917A3 (fr) 2017-05-17
DE202011004121U1 (de) 2011-05-26

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