EP4184533A1 - Bobine d'arrêt de filtrage, son procédé de production et dispositif électrique - Google Patents

Bobine d'arrêt de filtrage, son procédé de production et dispositif électrique Download PDF

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Publication number
EP4184533A1
EP4184533A1 EP21208886.8A EP21208886A EP4184533A1 EP 4184533 A1 EP4184533 A1 EP 4184533A1 EP 21208886 A EP21208886 A EP 21208886A EP 4184533 A1 EP4184533 A1 EP 4184533A1
Authority
EP
European Patent Office
Prior art keywords
core
filter
choke
bobbin
bobbins
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.)
Pending
Application number
EP21208886.8A
Other languages
German (de)
English (en)
Inventor
Marek S. Rylko
Marcin Kacki
Adam TOBIASZ
Przemyslaw HABINKA
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.)
SMA Solar Technology AG
Original Assignee
SMA Solar Technology 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 SMA Solar Technology AG filed Critical SMA Solar Technology AG
Priority to EP21208886.8A priority Critical patent/EP4184533A1/fr
Priority to PCT/EP2022/080359 priority patent/WO2023088672A1/fr
Publication of EP4184533A1 publication Critical patent/EP4184533A1/fr
Pending 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H01F27/325—Coil bobbins
    • 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
    • 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
    • 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
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F2003/106—Magnetic circuits using combinations of different magnetic materials
    • 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

Definitions

  • the present invention relates to a filter-choke for use in an E lectro- M agnetic- I nterference - (EMI) filter.
  • the present invention relates to a filter-choke that on one hand provides highly reproduceable magnetic properties, particularly, when produced in mass production and that on the other hand is easy to assemble, even when an electric wire with a large cross section is to be used.
  • the filter-choke may be used in various appliances including differential mode filters and common mode filters, it is particularly intended for use as a common mode filter-choke.
  • the present invention relates to an electrical device with a respective filter-choke and a production method of the filter-choke.
  • EMI-filter typically is implemented within the device.
  • EMC Electro-Magnetic-Compatibility
  • the EMI filter comprises a filter-choke which, dependent on the radiation mode to be filtered, can be configured as a differential mode filter-choke or as a common-mode filter-choke.
  • the filter-choke can comprise a magnetic core and at least two coils, each coil comprising an electric conductor that is arranged around a leg of the magnetic core in form of one or more windings. Since it is a frequent requirement that the magnetic core comprises a low magnetic reluctance, the core is designed as a closed magnetic core in form of a one-piece component. In that case, the coil is typically produced by manually winding the electrical wire around the magnetic core.
  • the manual production process is relatively labor intensive, in particular, when an electrical wire with a large cross section area is to be used, which typically is the case when a low ohmic resistance of the electrical conductor is required.
  • the manual production process results in a relatively poor reproducibility within multiple filter-chokes produced one after the other and theoretically comprising the same design. It also leads to an increase in component size. Therefore, it is desired to provide an optimized design for a filter-choke.
  • the printed document CN 203858954 U discloses a choke comprising an iron core set, two winding frames, a partition piece, and a winding.
  • the iron core set comprises a first iron core and a second iron core. The two ends of the first iron core and the two ends of the second iron core are connected in a separable mode to form a closed shape.
  • Each winding frame comprises a winding frame body which is provided with an iron core passageway allowing the iron core set to penetrate through.
  • the partition piece can be fixed to and combined with the two winding frames. The winding is wound on the two winding frames.
  • the object of the present invention to provide a filter-choke for use in an EMI filter addressing and eliminating or reducing at least one of the abovementioned drawbacks.
  • the filter-choke shall comprise highly reproducible magnetic properties within multiple filter-chokes manufactured according to the same design in combination with an easy way of assembly.
  • a filter-choke comprising the features of the independent claim 1.
  • Dependent claims 2 to 13 are directed to preferred embodiments of the filter-choke according to the present invention.
  • Claim 14 is directed to an electrical device comprising the filter-choke of the present invention.
  • Claims 15 is directed to a production method of the filter-choke.
  • a filter-choke to be used in an EMI filter comprises:
  • the opening of the tubular section - particularly the opening of each tubular section - is also present at a respective position within the base flange, such that a continuous through hole in an axial direction of each tubular section is provided, which not only is present within the tubular section, but also penetrates the base flange.
  • the filter choke may as well comprise more than two bobbins, for instance three or even more bobbins, which are arranged in a stacked manner one above the other and wherein adjacent bobbins are releasably fixed to each other.
  • one of the two core-legs is extending through the coaxially arranged openings of the stacked bobbins
  • a single core-segment also penetrates these openings.
  • the at least two bobbins are typically made out of an insulating material, e.g. made out of a synthetic resin material.
  • the production process of the bobbins can comprise an injection molding process. Due to the injection molding process, small tolerances regarding the dimensions of the bobbins can be ensured, that is advantageous with regard to the reproducibility of the magnetic properties of the filter-choke.
  • the magnetic properties of the filter-choke can be varied by changing the number of bobbins - and therefore by changing the number of pre-wound coils - actually present in the filter-choke in a modular manner.
  • the number of stacked bobbins - and also the number of pre-wound coils - can be increased.
  • the at least two bobbins comprise substantially the same design, it is however advantageous, because then only a single injection mold is necessary keeping the investment at a relatively low level.
  • the different bobbin designs in particular, can be different regarding a length of their tubular sections from bobbin to bobbin, such that pre-wound coils with different winding numbers can be placed on the different tubular sections.
  • a production method of the filter-choke comprises the following acts:
  • an automatic winding technology can be used for winding the electrical conductor, which is advantageous for producing the coils in a highly reproducible and cost-efficient manner. This is particularly advantageous if the electric conductor comprises a large cross section, which manually would be very difficult and irreproducible to wind. Since the winding of the coils is done prior to its placement on the bobbins and on the core-legs, a mechanical stress and its jeopardizing effects implied on the magnetic core during winding - typically present when using a manual winding process - can be eliminated.
  • the magnetic core is configured to be assembled out of at least two core segments and therefore comprises at least one gap
  • the detrimental effect of the gap on the magnetic properties of the assembled magnetic core here: an increase of the magnetic reluctance of the magnetic core
  • the core segments such that they are providing a bypass path for the magnetic flux around the at least one gap in an assembled state of the magnetic core. This will be explained in more detail in Fig. 4a and Fig. 4b .
  • each bobbin comprises two tubular sections extending in perpendicular direction from the base flange, wherein each of the tubular section contains an opening for receiving a different one of the two core legs.
  • a coil formed by an electric conductor and comprising multiple windings is arranged around each tubular section of each bobbin.
  • the two tubular sections can comprise axial directions, which are oriented substantially parallel relative to each other. This specifically can be the case if the magnetic core comprises a closed rectangular design with parallel oriented core legs on opposing sites of the magnetic core. It is also possible that the magnetic core comprises a toroidal form in its assembled state.
  • each bobbin of the filter-choke can contain guiding elements arranged on a bottom surface and/or on a top surface of its base flange.
  • the guiding elements can be configured to position and/or align at least one terminal - or each terminal - of the pre-wound coils formed by the electric conductor and arranged on the tubular section in an assembled state of the filter-choke.
  • each bobbin may contain guiding elements such that each terminal of each coil present in the assembled filter-choke is aligned relatively to each other and arranged at predefined positions relative to the assembled filter-choke.
  • An easy assembly of the filter-choke with other electrical components in an electric device in particular an assembly of the filter-choke on a Printed-Circuit-Board (PCB), can be supported by the guiding elements.
  • PCB Printed-Circuit-Board
  • the at least two first fitting elements of the first bobbin can be configured such that they are forming a snap fitting with the respective first fitting elements of the adjacent second bobbin in an assembled state of the filter-choke.
  • each first fitting element of the first bobbin - and also of the second bobbin - can contain a part and/or a corresponding counterpart of the snap fitting.
  • the snap fitting can comprise a hook/loop design wherein a "hook" as the part engages with "a loop" as the corresponding counterpart of the snap fitting.
  • the snap fitting part and the snap fitting counterpart can be designed such that they are extending perpendicularly relative to the base flange and in opposite axial directions relative to each other from the edge of the base flange.
  • the at least two bobbins can be designed substantially identical to each other by providing such designed parts and counterparts within each first fitting element of the bobbins.
  • the base flange of the bobbins can comprise two second fitting elements for releasably engaging with corresponding fitting elements of a core clip, wherein the core clip is configured to fix at least one - preferably more than one - of the multiple core segments of the magnetic core within the assembly of the filter-choke.
  • the assembly of the filter-choke, specifically the fixing of the magnetic core segments within the subassembly of the magnetic core can easily be realized by means of the core clip(s).
  • the filter-choke can further comprise a lid made of insulating material and having substantially the same shape as the base flange of the bobbins.
  • the lid acts as an isolating measure by which an unwanted electrical contact between the outer coil(s) and the magnetic core securely can be prevented.
  • the lid can be configured to be releasably fixed to a top one of the first bobbin and the second bobbin within the assembly of the filter-choke.
  • the fixing relative to the respective bobbin can be realized by also providing respective snap fitting parts on one side of the lid, which are configured to engage with the free snap fitting counterparts of the adjacently arranged bobbin.
  • the lid can also comprise the same number of openings at similar positions compared to each one of the bobbins within the filter-choke, such that the lid is also configured to receive the at least one core-leg - or two core-legs - of the magnetic core.
  • the lid on one side comprises a substantially flat surface design without a tubular section extending in that respective direction.
  • second fitting elements can be present, which are configured to engage with corresponding fitting elements of a further core clip of the filter-choke.
  • the magnetic core of the filter-choke is configured to be assembled from multiple core segments, a gap is present in the magnetic core, which typically increases its magnetic reluctance. Since a magnetic core having a low reluctance is often required within the relevant applications of the filter-choke the increase in magnetic reluctance is an unwanted effect. That detrimental impact is, conventionally, only slightly reduced by polishing outer surfaces of the several core segments, which in turn comprises an additional labor-intensive process.
  • the magnetic core of the filter-choke can comprise a low reluctance bypass-path around the gap, optionally around each gap. Therefore, the detrimental effect can be minimized, or even eliminated, without a labor intensive polishing.
  • the magnetic core of the filter-choke can comprise a gap having a gap plane normal n Gap that is oriented substantially parallel to a magnetic flux direction during operation of the filter-choke.
  • the bypass path can then comprise an overlapping region between two core segments that is arranged adjacent to the gap, wherein the overlapping region is oriented with its interface plane normal n OL substantially perpendicular to the magnetic flux during operation of the filter-choke.
  • a close contact of that core segments is provided by the overlapping region between the core segments through which the magnetic flux can easily penetrate from one core segment to the other core segment.
  • a tendency of penetration of the magnetic flux from one core segment to the other core segment is dependent on a size of the overlapping region. Specifically, said penetration is easier with an increasing area of the overlapping region.
  • the magnetic reluctance of the bypass path, and also of the magnetic core decreases with an area increase of the overlapping region.
  • the overlapping region can be formed between the two core segments that are also forming the gap (this is the case for the magnetic core disclosed in Fig. 4a ).
  • the magnetic core comprises at least three or more core segments.
  • the gap is formed by a first core segment and a second core segment, wherein two overlapping regions adjacent to the gap are formed, from which one overlapping region is formed between the first core segment and the third core segment, and the other overlapping region is formed between the third core segment and the second core segment (see Fig. 4b ).
  • the magnetic core - in an assembled state of the filter-choke - can comprise at least four core segments arranged in at least two layers arranged one above the other.
  • Each layer can contain a closed magnetic sub-core with substantially the same geometry formed out of at least two core segments, wherein the closed sub-cores are coaxially aligned to each other.
  • the core segments of the sub-cores in the different layers are arranged such that all gaps having a gap plane normal oriented substantially parallel to the magnetic flux are arranged offset to each other in the different sub-cores.
  • a low reluctance bypass path around each gap in the first layer is directed along a core segment in the adjacent second layer and arranged above or below the gap in the first layer via this design feature.
  • a low reluctance bypass path around each gap in the second layer is directed along a core segment in the adjacent first layer and arranged above or below the gap in the second layer.
  • the multiple core segments can comprise different core materials.
  • different core materials in the core-segments e.g. material A in a first core segment and material B in a second core segment etc.
  • a larger degree of freedom for achieving a targeted value for a specific magnetic property of the filter-choke can be achieved. Accordingly, the inductance of the filter choke can better be adjusted to a required value than this would be the case for a magnetic core with the same material in each core segment.
  • the electric conductor used for winding the at least two coils comprises a flat wire.
  • the at least two coils are formed by winding the flat wire around its thin edge.
  • An electrical device is characterized by including an EMI filter, which EMI filter comprises a filter-choke according to the invention.
  • the filter-choke within the device can be configured to operate as one of a "differential-mode filter-choke and a "common-mode" filter-choke.
  • the electrical device can be a power electronic device, in particular, a DC/AC-inverter or a DC/DC-converter.
  • the effects resulting for the electrical device are similar to those already described in combination with the filter-choke and the method of its production. Therefore, regarding the effects associated with the electrical device reference is made to the relevant sections.
  • Figs. 1a and Fig. 1b illustrates the design of an exemplary embodiment of a bobbin 30 that can be used in an embodiment of the filter-choke 10 according to the invention.
  • the explanation refers to Figs. 1a and Fig. 1b , wherein Fig. 1a illustrates the bobbin 30 in a front view and Fig. 1b illustrates the same bobbin 30 in a back view.
  • the bobbin 30 comprises a planar base-flange 31 and two tubular sections 32a, 32b extending from a front surface 36b of and in a direction perpendicular to the base flange 31.
  • Each tubular section 32a, 32b comprises an inner opening 33.
  • the base flange 31 comprises respective openings corresponding to and aligned with the inner opening 33 of the tubular sections 32a, 32b, such that for each tubular section a continuous through-hole is provided, which also extends through the base flange 31.
  • Each opening 33 is configured to receive a different core leg 21, 22 of the magnetic core 20 (see: Fig. 3a , Fig. 3b ).
  • each opening is divided by a partition wall 50, said partition wall 50 is only optional. Therefore, other embodiments of the bobbin 30 may not comprise said partitioning walls 50 inside the openings 33.
  • the bobbin 30 further comprises a plurality of first fitting elements 35 arranged on opposite edges 34 of the base flange 31.
  • the bobbin 30 displayed in Fig. 1a and Fig. 1b comprises in total four first fitting elements 35, two on each opposing edge 34.
  • the bobbin 30 is configured to releasably fix another substantially identical further bobbin relative to the bobbin 30 via the first fitting elements 35.
  • Each first fitting element 35 includes a part 38a and a corresponding counterpart 38b of a snap fitting 38, which is formed when the first fitting elements 35 of the bobbin and the further bobbin 30 are engaging.
  • the snap fitting 38 is formed as a "hook - loop" snap fitting. That is why each part 38a is formed as hook, whereas the corresponding counterpart 38b is formed as a loop.
  • other designs of the snap fittings are also possible, for instance a "hook - undercut" snap fitting design.
  • two second fitting elements 39a are arranged, which - in an assembled state of the filter-choke 10 (see Fig: 3b ) - are configured to engage with corresponding fitting elements 39b of a core clip 24.
  • the front side 36b and/or the backside 36a can comprise guiding elements configured to guide and / or align coil terminals 42a, 42b of the pre-wound coils 40 within the assembled filter-choke 10, the function of which will be explained in more detail in Fig. 2 .
  • Fig. 2 illustrates an embodiment for a preassembly of a first bobbin 30 and a second bobbin 30' substantially identical to the first bobbin 30. Both bobbins are arranged in a stacked manner one above the other and are releasably fixed to each other via the first fitting elements 35. Specifically, each part 38a of the first fitting elements 35 of the second bobbin 30' engages with its corresponding counterpart 38b of the first fitting elements 35 of the first bobbin 30.
  • Two pre-wound coils 40 - formed by an electric conductor 41 and arranged onto the tubular sections 32a, 32b of the first bobbin 30 prior to preassembly - are pressed and thereby fixed between the bobbins via the fixation of the bobbins 30, 30'.
  • Each coil 40 comprises two terminals 42a, 42b, that are positioned and aligned within the preassembly via guiding elements 43a - 43c and 43d - 43f extending from the front and/or from the backside of each bobbin 30, 30'. Due to small tolerances which typically can be achieved by injection molding of the bobbins 30, 30' the precise alignment and positioning of the terminals 42a, 42b is ensured.
  • Fig. 3a illustrates the filter-choke 10 in an exploded view
  • Fig, 3b shows the filter-choke 10 of Fig. 3a in an assembled state
  • the filter-choke 10 comprises three substantially identical bobbins 30.
  • each bobbin is also designed identical to the bobbin 30 shown in Fig. 1a and Fig. 1b .
  • the filter-choke 10 further comprises six pre-wound coils 40, each comprising an electrical conductor 41 formed by a flat wire.
  • the filter-choke 10 comprises a lid 37 configured to be attached and releasably fixed to an outer bobbin 37 (in Fig. 3a the bobbin 30 on the left side).
  • the design of the lid 37 is similar to the design of the bobbin 30, at least with regard to its lateral dimensions as well as the geometry of its backside.
  • the front side of the lid 37 is substantially planar.
  • the lid 37 also comprises two openings 33 on corresponding positions like this is the case for the bobbins 30.
  • Each opening 33 of the lid 37 is configured to receive a different one of the core legs 21, 22 of the magnetic core 20.
  • the magnetic core 20 of the filter-choke 10 is formed by four U - shaped core segments 23 arranged in two adjacent layers. Each layer contains two U - shaped core segments 23, such that in an assembled state of the filter-choke 10 each layer comprises a closed magnetic sub-core 28a, 28b.
  • the U - shaped core segments 23 are of two different lengths, such that in the assembled state of the filter-choke 10 the gaps 26 formed within the magnetic sub-core 28a in the first layer are arranged offset relative to the gaps 26 formed within the magnetic sub-core 28b in the second layer.
  • the magnetic reluctance of the magnetic core 20 can be kept relatively low, although the magnetic core comprises in total four gaps 26, each gap having a gap plane normal n Gap oriented substantially parallel to the magnetic flux within the magnetic core 20 during operation of the filter-choke 10.
  • each coil 40 is arranged around a different one of the tubular sections 32a, 32b of the several bobbins 30.
  • each bobbin 30 is releasably fixed to its adjacent bobbin 30, thereby pressing the coils 40 between adjacent bobbins and arranging / aligning the terminals 42a, 42b of the coils 40 in predefined positions relative to the whole assembly.
  • the lid 37 is releasably fixed onto the outer bobbin 30 via corresponding parts 38a and/or counterparts 38b of snap fittings also arranged on opposing edges of the lid 37.
  • the magnetic core 20 is assembled by inserting the U-shaped core-segments 23 into the openings 33 of the lid 37 and the bobbins 30. Finally, the core segments 23 of the magnetic core are fixed relative to an outer bobbin 30 and also relative to the lid 37 by releasably fixing one of two core clips 24 on each opposing side of the filter-choke 10.
  • Fig. 4a represents a schematic drawing of a magnetic core 20 section according to a first embodiment of the magnetic core 20.
  • the section shows a gap 26 that is formed by a first core segments 23a and a second core segment 23b.
  • the gap 26 comprises a gap plane normal n Gap that is oriented substantially parallel to the magnetic flux ⁇ , the direction of which is symbolized by bolt arrows in the core segments 23a, 23b. Without countermeasures, said gap 26 normally would result in an increase of the magnetic reluctance of the magnetic core 20.
  • Fig. 4a represents a schematic drawing of a magnetic core 20 section according to a first embodiment of the magnetic core 20.
  • the section shows a gap 26 that is formed by a first core segments 23a and a second core segment 23b.
  • the gap 26 comprises a gap plane normal n Gap that is oriented substantially parallel to the magnetic flux ⁇ , the direction of which is symbolized by bolt arrows in the core segments 23a, 23b. Without countermeasures, said gap 26
  • both adjacent core segments 23a, 23b are designed such that an overlapping region 27 is provided adjacent to the gap 26.
  • the overlapping region 27 is oriented such that its plane normal n OL is directed substantially perpendicular to the direction of the magnetic flux ⁇ during operation of the filter-choke 10.
  • n OL plane normal to the direction of the magnetic flux ⁇ during operation of the filter-choke 10.
  • Fig. 4b represents a schematic drawing of a gap 26 and its low reluctance bypass path 25 in a second embodiment of the magnetic core 20.
  • the situation is similar to the situation illustrated in Fig. 4a .
  • the magnetic core 20 comprises two adjacent layers, wherein in each layer a closed magnetic sub-core 28a, 28b is provided, such that the closed sub-cores 28a, 28b are stacked one above the other.
  • each sub-core 28a, 28b represents a closed magnetic sub-core
  • gaps 26 are present due to the fact that each sub-core 28a, 28b is formed by at least two core segments 23a, 23b (in the first layer 28a) and 23c, 23d (not illustrated in Fig 4b ) in the second layer 28b.
  • the gaps 26 in the different sub-cores 28a, 28b are arranged offset to each other, such that adjacent to a gap in one of the sub-cores 28a, 28b, there is always a continuous section of a core segment 23 of the other of the sub-cores 28b, 28a.
  • Fig. 4b depicts the situation around such a gap 26 in the first layer 28a (in Fig. 4b the first layer) by example.
  • Adjacent to the gap 26 and on each of its site overlapping regions 27 between two different core segments 23a - 23c are formed. Particularly in Fig 4b , on one side of the gap 26 an overlapping region 27 between the first core segment 23a and the third core segment 23c is formed, whereas on the other site of the gap 26 a further overlapping region 27 between the second core segment 23b and the third core segment 23c is formed. Based on the explanation provided in conjunction with Fig. 4a , this results in a low reluctance bypass path around the gap 26 starting on one side of the gap 26 in the first core segment 23a, through the overlapping region 27 via the third core segment 23c and through the further overlapping region 27 into the second core-segment 23b, and vice versa.
  • the low reluctance bypass path 25 is guided around the gap 26 through a core section 23c, 23d of the magnetic sub-core in an adjacently arranged sub-core 28a, 28b, i.e. the sub-cores 28a, 28b in the adjacent layers. If more than two sub-cores 28a 28b or layers are provided within the magnetic core 20, a respective bypass path 25 around a gap 26 is present in each adjacent sub-core 28a, 28b.
  • Fig. 5a illustrates the magnetic core 20 in an exploded view
  • Fig. 5b in a preassembled state
  • the magnetic core 20 is formed by two core segments 23.
  • Each core-segment 23a, 23b comprises a U-shape design comprising two U-legs and a U-base having a thickened middle region.
  • a closed magnetic core 20 having a rectangular geometry (as seen from a top view) is formed.
  • magnetic core 20 in Figs. 5a , 5b is configured to be used as a magnetic core only having a single layer, it is alternatively also possible to form a magnetic core 20 comprising multiple of such magnetic cores as magnetic sub-cores 28a, 28b, wherein each sub-core 28a, 28b is arranged in a single one of the plurality of layers.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Coils Or Transformers For Communication (AREA)
EP21208886.8A 2021-11-17 2021-11-17 Bobine d'arrêt de filtrage, son procédé de production et dispositif électrique Pending EP4184533A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21208886.8A EP4184533A1 (fr) 2021-11-17 2021-11-17 Bobine d'arrêt de filtrage, son procédé de production et dispositif électrique
PCT/EP2022/080359 WO2023088672A1 (fr) 2021-11-17 2022-10-31 Réactance de filtrage, son procédé de production et dispositif électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21208886.8A EP4184533A1 (fr) 2021-11-17 2021-11-17 Bobine d'arrêt de filtrage, son procédé de production et dispositif électrique

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EP4184533A1 true EP4184533A1 (fr) 2023-05-24

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55110010A (en) * 1979-02-19 1980-08-25 Matsushita Electric Ind Co Ltd Current transformer
US5155676A (en) * 1991-11-01 1992-10-13 International Business Machines Corporation Gapped/ungapped magnetic core
JPH0562020U (ja) * 1992-01-27 1993-08-13 株式会社トーキン ボビン
JP2014150220A (ja) * 2013-02-04 2014-08-21 Toyota Motor Corp リアクトル
EP2775487A1 (fr) * 2011-11-04 2014-09-10 Toyota Jidosha Kabushiki Kaisha Réacteur et procédé de production de ce dernier
CN203858954U (zh) 2014-04-30 2014-10-01 台达电子（东莞）有限公司 扼流器
JP2017027973A (ja) * 2015-07-15 2017-02-02 株式会社オートネットワーク技術研究所 リアクトル、コンバータ、および電力変換装置
JP6458720B2 (ja) * 2015-12-04 2019-01-30 トヨタ自動車株式会社 リアクトル

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55110010A (en) * 1979-02-19 1980-08-25 Matsushita Electric Ind Co Ltd Current transformer
US5155676A (en) * 1991-11-01 1992-10-13 International Business Machines Corporation Gapped/ungapped magnetic core
JPH0562020U (ja) * 1992-01-27 1993-08-13 株式会社トーキン ボビン
EP2775487A1 (fr) * 2011-11-04 2014-09-10 Toyota Jidosha Kabushiki Kaisha Réacteur et procédé de production de ce dernier
JP2014150220A (ja) * 2013-02-04 2014-08-21 Toyota Motor Corp リアクトル
CN203858954U (zh) 2014-04-30 2014-10-01 台达电子（东莞）有限公司 扼流器
JP2017027973A (ja) * 2015-07-15 2017-02-02 株式会社オートネットワーク技術研究所 リアクトル、コンバータ、および電力変換装置
JP6458720B2 (ja) * 2015-12-04 2019-01-30 トヨタ自動車株式会社 リアクトル

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