EP2614510A1 - Bobine compensée en courant ayant une inductance de fuite améliorée - Google Patents

Bobine compensée en courant ayant une inductance de fuite améliorée

Info

Publication number
EP2614510A1
EP2614510A1 EP11766882.2A EP11766882A EP2614510A1 EP 2614510 A1 EP2614510 A1 EP 2614510A1 EP 11766882 A EP11766882 A EP 11766882A EP 2614510 A1 EP2614510 A1 EP 2614510A1
Authority
EP
European Patent Office
Prior art keywords
core
current
compensated
winding
region
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
EP11766882.2A
Other languages
German (de)
English (en)
Other versions
EP2614510B1 (fr
Inventor
Gerhard Karl
Herbert Maier
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.)
Sumida Components and Modules GmbH
Original Assignee
Sumida Components and Modules 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 Sumida Components and Modules GmbH filed Critical Sumida Components and Modules GmbH
Publication of EP2614510A1 publication Critical patent/EP2614510A1/fr
Application granted granted Critical
Publication of EP2614510B1 publication Critical patent/EP2614510B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/12—Magnetic shunt paths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/04—Fixed inductances of the signal type with magnetic core
    • H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances

Definitions

  • Such common-mode noise can be reduced efficiently by using so-called current-compensated chokes in which two identically wound windings, ie, for a 2-phase system, are applied to a core and connected in opposite directions.
  • current-compensated chokes in which two identically wound windings, ie, for a 2-phase system, are applied to a core and connected in opposite directions.
  • the normally highly selected inductance of the current-compensated choke is virtually ineffective for the useful signal.
  • the occurrence of a common-mode interference results in an additive effect of both windings connected in opposite directions, so that in this case the entire inductance of the current-compensated choke is effective and thus an efficient suppression of the interference signals is achieved.
  • Such current-compensated chokes are often used in signal lines to also there to effectively suppress common mode noise.
  • a wide variety of current compensated chokes have been developed that allow efficient suppression of common mode noise without unnecessarily compromising the bandwidth needed for the useful signal.
  • very efficient current-compensated chokes based on toroidal cores are made, in which the windings are typically symmetrically applied to the toroid so that a very symmetric design in conjunction with the favorable stray characteristics of the toroidal core results in a pronounced common mode noise suppression.
  • this construction of the current-compensated choke according to the invention provides a special geometry, in particular for 2-phase systems, which enables a precisely adjustable stray inductance.
  • the core which is simulated at least in the winding areas of the shape of a toroidal core with its advantageous properties with respect to the magnetic field guide, a Stray Inductance, thus determining the total length of the magnetic core in a crucial way.
  • the geometry of the core is set so that a maximum width is smaller than the total length of the core, so that an overall "oval" or elongated shape results, thus contributing to increased leakage inductance within the leakage inductance region.
  • a minimum inner width between opposing portions of the leakage inductance region is greater than about 50% of a maximum inner width of the core.
  • this geometric configuration of the core enables a desired high stray inductance by reducing the width of the opposite parts of the leakage inductance region, on the other hand, however, a sufficient distance is kept inside the core, so that no disturbances caused by downstream manufacturing steps, such as the automated winding of the winding areas.
  • Another advantage is that the central centering area in the carrier or housing can be used for aspiration in SMD designs.
  • the core is provided without an air gap, resulting in an overall "closed" core configuration, with the inner area enclosed by the core material still being sufficiently sized to allow automated winding any well proven magnetic materials typically used for toroidal cores.
  • Fig. 2b shows schematically a plan view of a core in which a suitable "constriction" is provided in a closed core in the form of a leakage inductance region,
  • Fig. 2c shows schematically a plan view of a core of the current-compensated inductor, wherein the core is constructed of arcuate sections and the leakage inductance region has two minimum internal distances for setting the desired leakage inductance and for efficiently limiting a suitable winding space,
  • Fig. 2d shows a schematic perspective view of the core of Fig. 2c
  • FIG. 2e schematically shows a top view of the current-compensated choke with a carrier
  • the magnetic core 110 is constructed of any suitable core material, such as high permeability ferrite materials, and the like, selected according to the desired inductance values and applications.
  • suitable core material such as high permeability ferrite materials, and the like, selected according to the desired inductance values and applications.
  • an increased leakage inductance of the inductor 10 is required to effectively suppress, for example, differential mode noise, which is typically accomplished by providing a shunt body 140, for example in the form of a ferrite rod, and the like.
  • the ferrite rod 140 is attached thereto after application of the windings 120, 130 as by gluing to the core 1 10, wherein in cooperation with the general properties of the body 140, d. H.
  • the magnetic length, whose magnetic cross-section, to a lesser extent the permeability of the magnetic material, in particular the resulting air gap between the core 1 10 and the body 140 determines the course of the field lines in the body 140.
  • the leakage inductance that is for the current-compensated reactor 00 at a value of about 0.5 to 1.0% of the desired inductance of the reactor 100 can be increased by 50 to 100% if necessary by providing the shunt body 140. That is, in this way also succeeds an efficient compensation of push-pull interference signals, without significantly affecting the Nutzsignalkomponente.
  • a generally "oval" design for a closed core geometry may be chosen such that the windings are disposed on opposite regions of the "oval" core at maximum distance from each other, while thus unwound regions of the core compared to the maximum length a smaller distance, which is also referred to as width in the following,
  • this type of core makes it possible to create a low-leakage structure in the area of the windings, while on the other hand the leakage flux is targeted in the non-wound area, which is also referred to as a leakage inductance area
  • an additional shunt body can be dispensed with in comparison to a pure toroidal geometry, without, however, significantly changing the structural dimensions for otherwise predetermined characteristics of the current-compensated choke.
  • the longitudinal direction and thus the total length 21 OL of the core 210 is determined by the maximum distance between a first winding portion 212 and a second winding portion 213, on which the windings 220 and 230 are applied accordingly.
  • a width 21OB of the core 210 is defined by the maximum dimension of the core 210 in a direction perpendicular to
  • an "oval" core shape in the sense of the present application is to be understood as a core shape in which the total length 21 OL is greater than the maximum width 210b, irrespective of geometric shape of a provided between the winding portions 212 and 213 portion 215 of the core 210, which is also referred to as a leakage inductance region.
  • the core 210 also has an inner width 2101, which in this application is to be understood as a dimension along the width direction given by inner edges of the core material 210.
  • the maximum value is taken as the inner width 2101, which results along the total length 21 OL in each case opposite regions of the core 210.
  • the core 210 thus assumes its (maximum) inner width along the region 215 and thus also outside the center 215M of the region 215.
  • the current compensated inductor 200 can be fabricated based on established fabrication techniques by making the core 210 into the oval desired shape by suitable materials, for example, by suitable molding by methods similar to those used for ordinary toroidal cores. Further, by the geometry of the core 210, it may be machine-wound to apply approximately the windings 220, 230 having the desired properties. On the other hand, the leakage flux properties of the core 210 in conjunction with the windings 220, 230 are dictated by the geometry of the core 210 and in particular by the leakage inductance region 215. In further processing steps, the assembly of the core 210 and the windings 220, 230 may be mounted on a carrier or placed in a suitable housing, as also described in more detail below.
  • a useful signal is applied to the terminals 201 and this can be tapped at terminals 202, wherej an efficient suppression of common mode noise takes place due to the symmetrical design of the device 200, while the suppression of push-pull noise due to the set Leakage inductance occurs without that too clearly the useful signal is impaired, as also explained above.
  • the size of the minimum width 21 OM is limited to a maximum of 50% of the inner width 2101 in some illustrative embodiments. In this way, it is ensured that there is sufficient mechanical accessibility of the space area enclosed by the core 210 when the core 210 is being machine-wound. In other embodiments, the restriction may be more pronounced, that is, the minimum width 210M may be less than 50% of the inner width 2101.
  • FIG. 2c schematically illustrates a top view of the core 210 according to further illustrative embodiments in which the core 210 is constructed in the form of a plurality of arcuate sections.
  • the winding portion 212 is provided as an arcuate portion defined by a particular radius of curvature for a given cross section of the core 210.
  • the winding portion 213 is provided as an arcuate portion. This is followed by corresponding arcuate portions of the leakage inductance region 215, wherein the various sections are provided with corresponding radii of curvature, so as to obtain the desired overall core shape.
  • the various sections are provided with corresponding radii of curvature, so as to obtain the desired overall core shape.
  • the various sections are provided with corresponding radii of curvature, so as to obtain the desired overall core shape.
  • EP2011 / 004481 are approximately EP2011 / 004481
  • the described carrier can also be designed as a housing for complete or partial grouting of the throttle.
  • the curve C shows schematically a graph of the inductance as a function of the forward current for the device 100 from FIG. 1 according to the curve A, while the curve C indicates the corresponding behavior of the device 200 according to the invention for the embodiment shown in FIG. 2a.
  • the components are designed in the same way with respect to the electrical properties with the exception of the core geometry.
  • the device 200 represented by the curve C has a stray inductance of 660 ⁇ , which corresponds to an increase of the stray inductance of 100% compared to a simple toroidal device of the device 100 according to the curve A.
  • the leakage inductance in the current-compensated choke according to the invention can be increased over conventional toroidal geometries, even if it is provided with an additional shunt body the appropriate core geometry can be set up a very efficient process for producing the current-compensated chokes.
  • the cores have an automatic core shape without additional measures being required after winding to set a desired high leakage flux.
  • the leakage flux is determined exclusively by the core geometry, given given magnetic data and overall dimensions of the core, so that large numbers of current-compensated chokes can be produced with small range fluctuations.
  • Fig. 7a shows a schematic plan view of a magnetic core 710, although represents a closed core shape, which can be referred to in principle as a ring-core-like shape, but clearly deviates from a toroidal shape, as shown in dashed lines as 71 1, thus a special designed to achieve scattered inductance behavior. That is, the core 710 deviates from the toroidal shape 71 1 so as to cause a higher stray inductance as desired when the core 710 is used as a core for a current-compensated reactor.
  • the core material of the respective regions also has a corresponding extent in a direction perpendicular to the plane of the drawing of FIG. 7a, as shown in the perspective view of FIG. 2d in a similar form for the core 210, the above-mentioned definition of that marginal line apply, which results from a section through the core 710, which corresponds to the median plane according to the perpendicular to the plane of the Fig. 7a. For the sake of simplicity, let it be assumed that the plane shown in FIG. 7a corresponds to this median plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

Les bobines compensées en courant possèdent un noyau essentiellement fermé qui s'écarte de la forme de noyau annulaire, si bien que l'on atteint un flux de dispersion amélioré tout en conservant les autres avantages d'une géométrie conventionnelle à noyau annulaire. En particulier, les bobines compensées en courant selon l'invention peuvent être fabriquées automatiquement de manière efficace sans qu'il ne soit nécessaire d'avoir des étapes de procédé en aval pour l'addition de corps en dérivation.
EP11766882.2A 2010-09-07 2011-09-06 Bobine compensée en courant ayant une inductance de fuite améliorée Not-in-force EP2614510B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010040326 2010-09-07
DE102010050828A DE102010050828A1 (de) 2010-09-07 2010-11-09 Stromkompensierte Drossel mit erhöhter Streuinduktivität
PCT/EP2011/004481 WO2012031742A1 (fr) 2010-09-07 2011-09-06 Bobine compensée en courant ayant une inductance de fuite améliorée

Publications (2)

Publication Number Publication Date
EP2614510A1 true EP2614510A1 (fr) 2013-07-17
EP2614510B1 EP2614510B1 (fr) 2014-12-10

Family

ID=44764077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11766882.2A Not-in-force EP2614510B1 (fr) 2010-09-07 2011-09-06 Bobine compensée en courant ayant une inductance de fuite améliorée

Country Status (5)

Country Link
US (1) US20130207762A1 (fr)
EP (1) EP2614510B1 (fr)
CN (1) CN103189940A (fr)
DE (1) DE102010050828A1 (fr)
WO (1) WO2012031742A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102013211121A1 (de) * 2013-06-14 2014-12-18 Robert Bosch Gmbh Wechselrichter
WO2017093195A1 (fr) * 2015-12-03 2017-06-08 Siemens Aktiengesellschaft Procédé d'utilisation d'une bobine de compensation de courant à quatre phases dans un circuit électrique à sécurité intrinsèque
DE102017214857B4 (de) * 2017-08-24 2024-08-01 Vacuumschmelze Gmbh & Co. Kg Ringkernbaugruppe, stromkompensierte Drossel und Verfahren zur Herstellung einer Ringkernbaugruppe
CN108417362A (zh) * 2018-02-27 2018-08-17 东莞市立宇电子有限公司 一种差共模电感
EP3876249A1 (fr) * 2020-03-05 2021-09-08 Hamilton Sundstrand Corporation Transformateur de blocage de séquence zéro
DE102020122572A1 (de) 2020-08-28 2022-03-03 Hanon Systems Filteranordnung und Verfahren zur Störungsunterdrückung
DE102021115895A1 (de) 2021-06-18 2022-12-22 Florian Geling Vorrichtung zum Filtern von Gleichtaktstörungen und von Gegentaktstörungen
KR102372134B1 (ko) * 2021-07-23 2022-03-08 신건일 전자파 차폐필터
EP4148968A1 (fr) * 2021-09-14 2023-03-15 Hamilton Sundstrand Corporation Transformateur de blocage de séquence zéro
US20240379275A1 (en) * 2023-05-08 2024-11-14 Archer Aviation Inc. Systems and methods for enhancing leakage inductance of power transformers
DE102024131340A1 (de) * 2024-10-28 2026-04-30 Magnetec Gmbh Magnetfeldempfindliches Bauelement, magnetfeldempfindliche Bau-gruppe, induktive Baugruppe und Verwendung

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US3996537A (en) * 1975-07-21 1976-12-07 Corcom, Inc. Noise suppression filter
JPH01220415A (ja) * 1988-02-29 1989-09-04 Nippon Telegr & Teleph Corp <Ntt> Ａｃラインフィルタ
JPH04103107A (ja) * 1990-08-22 1992-04-06 Murata Mfg Co Ltd コモンモードチョークコイル
JPH07106142A (ja) * 1993-09-29 1995-04-21 Taiyo Yuden Co Ltd トロイダルコイル
US5731666A (en) * 1996-03-08 1998-03-24 Magnetek Inc. Integrated-magnetic filter having a lossy shunt
JPH10223457A (ja) * 1997-02-10 1998-08-21 Keiichiro Asaoka 静止磁石型発電機
WO2000017896A1 (fr) * 1998-09-18 2000-03-30 Abb Daimler-Benz Transportation (Technology) Gmbh Transformateur pour une alimentation a decoupage
CN2432667Y (zh) * 2000-07-05 2001-05-30 台达电子工业股份有限公司 电感的铁氧体磁心
WO2009131602A1 (fr) * 2008-04-22 2009-10-29 Cramer Coil & Transformer Co., Inc. Bobine d'inductance triphasée en mode commun et en mode différentiel

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Also Published As

Publication number Publication date
CN103189940A (zh) 2013-07-03
US20130207762A1 (en) 2013-08-15
EP2614510B1 (fr) 2014-12-10
DE102010050828A1 (de) 2012-03-08
HK1185181A1 (en) 2014-02-07
WO2012031742A1 (fr) 2012-03-15

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