EP2458598A1 - Inductive component for high voltages and production method - Google Patents
Inductive component for high voltages and production method Download PDFInfo
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- EP2458598A1 EP2458598A1 EP12153862A EP12153862A EP2458598A1 EP 2458598 A1 EP2458598 A1 EP 2458598A1 EP 12153862 A EP12153862 A EP 12153862A EP 12153862 A EP12153862 A EP 12153862A EP 2458598 A1 EP2458598 A1 EP 2458598A1
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- conductor
- magnetic core
- parts
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- 238000004804 winding Methods 0.000 claims description 30
- 239000007787 solid Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 238000004382 potting Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 description 5
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
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- 230000035699 permeability Effects 0.000 description 2
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Images
Classifications
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- 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
- H01F27/303—Clamping coils, windings or parts thereof together
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
-
- 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
- H01F27/2895—Windings disposed upon ring cores
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
Definitions
- the invention relates to an inductive component with a closed magnetic core, which is used in applications for high currents (eg in mains filters).
- An inductive device suitable for high currents has a current conductor with a large cross-section.
- the current conductor may be formed as a flexible strand or a hard-to-bend solid conductor (eg busbar).
- the present invention has for its object to provide a suitable for high currents inductive component having a high inductance and a small footprint.
- the invention provides an inductive component suitable for high currents with a closed magnetic core and a conductor which runs at least twice through the interior of the magnetic core and forms a winding of the inductive component.
- the conductor comprises a plurality of firmly connected, pre-bent or angled parts of a Solid conductor, which has a high bending strength.
- Two interconnected conductor parts can, for. B. be U-shaped, wherein the leg length of the U-piece may be different.
- Two interconnected current conductor parts can also be designed in each case as an L-piece.
- the connection of a U-piece with an L-piece is also provided.
- the conductor parts can be bent twice or bent at least once, to form a U-piece twice, in a variant also more than twice. It is essential that one limb of the respective conductor part can be pushed through the inner hole of the core.
- the invention has the advantage that in the case of an inductive component designed for high currents, high inductance values can be achieved with a small constructional volume.
- the number of turns is quadratic.
- a solid conductor has the advantage of low ohmic losses compared to a flexible conductor which is composed of several current wires.
- the solid conductor has a high dimensional stability and therefore a high mechanical strength.
- Conductor parts realized from a solid conductor have the advantage that they retain a predetermined shape when connected to further conductor parts.
- a solid conductor in the inductive component according to the invention is to be distinguished from a flexible wire, in particular from a wire wound around a core.
- the current carrying capacity of the solid conductor may vary depending on the application z. 200A, 500A, 1000A or 2500A.
- the hard-to-bend Solid conductor is preferably also to be distinguished from a flexible solid conductor, which has a current carrying capacity of less than 150 A.
- the solid conductor preferably represents a busbar or busbar with a rectangular cross section.
- the solid conductor can, for. B. be a copper rail or an aluminum rail.
- the solid conductor can also consist of another metal with a good electrical conductivity.
- the solid conductor can also be a flat conductor made of stamped metal, z. B. be sheet metal. It is advantageous if at least one of the firmly interconnected conductor parts has two contact areas which are offset in height from one another.
- the ladder parts can z. B. U-shaped or L-shaped flat parts, wherein transverse sections of the conductor part are either in a plane or in the planes that form an acute angle to each other.
- the conductor may be in one variant, an electrical conductor without Isolierumhüllung.
- the current conductor can have an insulating sheath.
- the Isolierumhüllung can z. B. be formed by an insulating varnish or a plastic layer.
- the conductor is preferably composed of a plurality of sub-conductors, the z. B. are mechanically firmly connected by screwing, soldering or welding. Such an embodiment of the conductor facilitates the installation of a winding with closed cores.
- junction between different parts of the conductor is preferably outside the interior of the magnetic core, for. B. above the plane in which the upper end face of the magnetic core is located, or below the plane in which the lower end face of the magnetic core is located.
- the magnetic core can be designed in one variant as a homogeneous closed ring core with or without a gap.
- the gap may be filled with a material having a different magnetic permeability from the material of the core.
- the magnetic core of several parts, for. B. composed of two U or E parts.
- the core may also be formed of an E-shaped and a rod-shaped core part, forming two closed magnetic circuits.
- the gaps formed in this case can be filled with a material having a different magnetic permeability from material of the core.
- an adhesive for connecting the core parts can be arranged together.
- the core or the core part can, for. Example of iron, metal oxides, ceramics, plastic, ferrites or other soft magnetic materials or alloys thereof.
- the core or the core part may be composed of iron sheets.
- the magnetic core may be multi-part, wherein the core parts each have a closed magnetic circuit and are arranged one above the other along the core axis.
- the magnetic core may be divided along its central axis into two U-shaped parts or two E-shaped parts.
- the pre-bent or angled parts of the conductor can be inserted through the inner hole of the magnetic core and then connected together outside of the inner hole of the core.
- pre-bent conductors are assembled in a one-piece magnetic core.
- a composite magnetic core it is possible first to bend the conductor or to connect the parts of the conductor together, wherein turns of a winding are formed.
- the first core part is pushed through the windings of the conductor.
- the first core part is then mechanically connected to a second core part.
- a choke with two windings and the second core part is pushed through the turns of another conductor.
- the two core parts with windings are then mechanically interconnected.
- the conductor is preferably fixed in the device so that it does not touch the core.
- the arrangement of the core and the conductor or parts of the arrangement may be in the housing of the device z. B. be fixed by means of a potting. It is also possible to attach the core and the conductor to the housing independently.
- the current conductor preferably forms a winding which is wound around the magnetic core.
- Each turn of the conductor is assigned its own winding level.
- a portion of the conductor can be angled so that thereby takes place the change from one winding plane to the next winding plane.
- the transition to the next winding level can also be achieved by angled connectors between the parts of the conductor.
- the invention can be used, for example, as a current-compensated choke in a line filter suitable for two, three or> 3 current phases.
- each of the windings is essentially formed as the first current conductor described above.
- a variant ( Fig. 3F ) It is provided that, in a first conductor part, the opening of the U-piece facing the first end face of the core. In a second conductor part, which is firmly connected to the first part, the opening of the U-piece preferably has the second end face of the core.
- the legs of the two U-pieces have an overlap region and are firmly connected to each other in this area.
- the U-pieces are pre-bent in a variant. In another variant, they are available as stamped flat parts.
- FIG. 1 shows an inductive component with a magnetic core 3 and two windings, which are formed by a first conductor 1 and a second conductor 2.
- the arrangement of the magnetic core 3 and the current conductors 1, 2 is arranged in a housing 4 made of sheet metal.
- the first conductor 1 is composed of two pre-bent parts 11 and 12.
- the second conductor 2 is also composed of two pre-bent parts 21 and 22.
- the parts of the respective conductor are connected together by means of fastening elements 71 and 72 firmly together, for. B. screwed.
- the first part 11 of the first conductor 1 has two openings for receiving fastening elements 71, one in FIG. 2 visible opening 11b in the region of the first terminal 111 of the first conductor 1 and a further opening for receiving a fastener 73.
- the fastening element 73 is used for fastening a line piece, not shown here, which produces the electrical connection to the board 8 here.
- the first part 11 of the first conductor 1 may have only one opening for receiving fastening elements or more than two such openings.
- the second part 12 of the first conductor 1 has two openings for receiving fastening elements 71, one in FIG. 2 visible opening 12b in the region of the second terminal 112 of the first conductor 1 and a further opening 77 for receiving a fastener 76 (see Fig. 2 ) on.
- the fastener 76 is used for attachment of a line piece, not shown here, in Fig. 2 the electrical connection to the capacitor 6 produces.
- the first conductor 1 extends twice through the inner hole 31 of the closed magnetic core 3.
- the second conductor 2 also passes twice through the inner hole 31 of the magnetic core 3.
- the second conductor 2 is similar in structure as the first conductor. 1
- the parts 11, 12 of the conductor 1 are constructed so that they can be easily inserted through the magnetic core 3 respectively.
- the decomposition of the conductor 1 in the sections 11, 12 may, for. B. - as in Fig. 3A shown - be made so that the distance a between the legs of the U-shaped member 11 is not smaller than the wall thickness b of the magnetic core.
- the parts 11, 12 are mechanically connected to each other and fixed relative to the core, that their connection point above the plane in which the upper end face of the magnetic core 3 is arranged, is located.
- the arrangement can be designed to save space, in particular in the direction transverse to the axis of the magnetic core 3. It is advantageous if the connection point between the sections 11, 12 faces away from the inner hole 31 of the magnetic core 3.
- the conductor 1 can be broken down into more than two sections depending on the predetermined number of turns. It is advantageous to form the sections with U-shaped areas, wherein the (preferably shorter) legs of different U-parts partially overlap each other.
- the core can be inserted between the legs of a U-section.
- the sections 11, 12 of the first conductor 1 and the sections 21, 22 of the second conductor 2 are preferably angled toward the outside so that the distance between the first component terminals 111 and 211, the distance between the second component terminals 112 and 212 is equal to.
- only parts are used, each of which forms less than a whole turn around the core. They preferably form a half or three quarters turn.
- the first conductor 1 is fixed by means of the insulating inserts 51, 53 in the housing 4 and electrically isolated from this.
- the second conductor 2 is fixed by means of the insulating inserts 52, 54 in the housing 4 and electrically isolated from this.
- the inserts 51 to 54 are fastened in the housing by means of the fastening elements 74, 75.
- the magnet core 3 is a toroidal core with an inner hole 31.
- the magnet core 3 is here in three parts, wherein the core parts each have a closed magnetic circuit and are arranged one above the other along the core axis.
- the magnetic core 3 is fixed in the housing 4 such that it does not touch the windings of the current conductors 1, 2.
- the winding can touch the core, if the core of an electric insulating material or the winding of core is electrically isolated.
- the housing 4 surrounds the magnetic core 3, the first conductor 1 to its terminals 111, 112 and the second conductor 2 except for its terminals 211, 212.
- the housing 4 has openings 41 for receiving further fasteners, with which the entire component z. B. can be mounted on a panel or in a sheet metal cabinet.
- the openings 41 may also be rivet holes for a housing cover.
- FIG. 2 shows the perspective view of a network filter with an inductive component according to the invention.
- the housing 4 in addition to the inductive component (elements 1, 2, 3) are electrically connected to this connected capacitors 6 and 81 to 83.
- the capacitors 81 to 83 are mounted on a printed circuit board 8.
- the circuit board 8 is electrically connected to the housing 4 by means of a copper strip 84 low inductively.
- FIGS. 3A to 3F show process steps in the assembly of the conductor to the magnetic core.
- the closed magnetic core 3 and the sections 11, 12 of the first conductor 1 and the sections 21, 22 of the second conductor 2 are provided.
- the sections 11, 12, 21, 22 of the first 1 and second 2 current conductors are U-shaped with an angled longer leg.
- the first part 11 of the first conductor 1 and the first part 21 of the second conductor 2 is pushed through from below over the wall of the magnetic core 3 ( Fig. 3A, 3B . 3E ) and aligned so that the distance to the magnetic core 3 is complied with, and z. B. by means of in Fig. 2 shown inserts 51, 52, z. B. by means of bushings, not shown in the housing of the component ( Fig. 3C . 3F ).
- the second part 12 of the first conductor 1 and the second part 22 of the second conductor 2 is inserted from above into the inner hole 31 of the magnetic core 3 ( Fig. 3B . 3E ) and relative to the core and the sections 11, 21 ( Fig. 3C . 3F ), that the openings 11 a, 12 a of the sections 11, 12 coincide with each other and the distance to the magnetic core 3 is maintained, and z. B. by means of in Fig. 2 shown inserts 53, 54, z. B. by means of bushings, fixed in the housing of the device ( Fig. 3D . 3F ).
- the section 11 is z. B. firmly connected by means of fastening elements with the section 12.
- the section 21 is z. B. by means of fasteners firmly connected to the section 22.
- the joining of the sections together can be done before fixing these sections in the housing.
- the joining of the sections with each other can also be done after fixing these sections in the housing.
- the magnetic core can be fixed in a variant prior to the passage of the sections 11, 12, 21, 22 in the housing.
- the magnetic core can be fixed in the housing only after the alignment and fixing of the sections 11, 12, 21, 22.
- the first assembly of the first conductor 1 is mounted first.
- the second conductor 2 is mounted in the same manner.
- the first sections 11, 21 can also be inserted or mounted in a single step, wherein the second sections 12, 22 are pushed through and mounted in a further step.
- FIG. 4 an inductive component with a winding is shown, which is composed of firmly interconnected L-shaped flat conductor parts 11 ', 12', 13 '.
- the first flat conductor parts 11 'and 13' are bent so that they each have a sloping portion 11 b, 13 b.
- the section 11b or 13b connects the sections 11a and 11c or 13a and 13c arranged in different winding planes. With the oblique portion of the L-piece or by mounting with a height offset (the connecting areas) so succeeds the transition between two winding levels.
- connection regions of flat conductor parts 11 ', 12' and 13 ' are assigned to a connection region 101, 102, 103, 104.
- the connection areas 101 and 103, 102 and 103, 102 and 104 of two flat conductor parts are arranged along one diagonal each.
- the flat conductor parts are firmly connected to each other in the connection areas, z. B. welded, bolted or brazed.
- the parts of the conductor 1 may have openings for receiving fastening elements 71, 73, 76.
- the first flat conductor parts 11 'and 13' are connected to each other by means of a second flat conductor part 12 '.
- the second flat conductor part 12 ' has no kink and is arranged in a winding plane. In principle, however, it can also be folded like the parts 11 ', 13'.
- the winding may comprise more than just two first parts 11 ', 13' and only one second part 12 '.
- the conductor part 11 ' is fixedly connected to the connection piece 111 and the conductor part 13' to the connection piece 112.
- the connecting pieces preferably each have at least one opening for receiving a fastening element.
- the L-pieces in Fig. 4 can be replaced in a variant by U-shaped flat conductor parts, wherein z. B. the first U-part is bent in such a way that its connector runs obliquely.
- the second U-part can lie in a winding plane or be bent.
- the junctions of two U-pieces preferably face the faces of the core.
- the magnetic core in FIG. 4 is a closed core composed of two interconnected U-pieces.
- the magnetic core can also be integral.
- the invention is not limited to the example presented or certain materials. Further developments of the invention z. As regards the configuration of the connection point between different parts of the conductor or with respect to the attachment of parts of the arrangement of the core and the conductor are provided.
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Abstract
Description
Die Erfindung betrifft ein induktives Bauelement mit einem geschlossenen Magnetkern, das bei Anwendungen für hohe Ströme (z. B. in Netzfiltern) eingesetzt wird.The invention relates to an inductive component with a closed magnetic core, which is used in applications for high currents (eg in mains filters).
Ein induktives Bauelement ist bekannt aus den Druckschriften
Ein induktives Bauelement, das für hohe Ströme geeignet ist, weist einen Stromleiter mit einem großen Querschnitt auf. Der Stromleiter kann als eine biegsame Litze oder ein schwer biegbarer Massivleiter (z. B. Stromschiene) ausgebildet sein.An inductive device suitable for high currents has a current conductor with a large cross-section. The current conductor may be formed as a flexible strand or a hard-to-bend solid conductor (eg busbar).
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein für hohe Ströme geeignetes induktives Bauelement anzugeben, das eine hohe Induktivität und einen geringen Platzbedarf aufweist.The present invention has for its object to provide a suitable for high currents inductive component having a high inductance and a small footprint.
Diese Aufgabe wird erfindungsgemäß durch ein induktives Bauelement mit den Merkmalen von Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind aus weiteren Ansprüchen zu entnehmen.This object is achieved by an inductive component with the features of
Die Erfindung gibt ein für hohe Ströme geeignetes induktives Bauelement mit einem geschlossenen Magnetkern und einem Stromleiter an, der mindestens zweimal durch das Innere des Magnetkerns läuft und eine Wicklung des induktiven Bauelements bildet. Der Stromleiter umfasst mehrere fest miteinander verbundene, vorgebogene oder abgewinkelte Teile aus einem Massivleiter, der eine hohe Biegefestigkeit aufweist.The invention provides an inductive component suitable for high currents with a closed magnetic core and a conductor which runs at least twice through the interior of the magnetic core and forms a winding of the inductive component. The conductor comprises a plurality of firmly connected, pre-bent or angled parts of a Solid conductor, which has a high bending strength.
Zwei miteinander verbundene Stromleiterteile können z. B. U-förmig sein, wobei die Schenkellänge des U-Stücks unterschiedlich sein kann. Zwei miteinander verbundene Stromleiterteile können auch jeweils als ein L-Stück ausgebildet sein. Die Verbindung eines U-Stücks mit einem L-Stück ist auch vorgesehen. Die Stromleiterteile können mindestens einmal, zur Bildung eines U-Stücks zweimal, in einer Variante auch mehr als zweimal gebogen oder abgewinkelt sein. Wesentlich ist, dass ein Schenkel des jeweiligen Stromleiterteils durch das Innenloch des Kerns durchsteckbar ist.Two interconnected conductor parts can, for. B. be U-shaped, wherein the leg length of the U-piece may be different. Two interconnected current conductor parts can also be designed in each case as an L-piece. The connection of a U-piece with an L-piece is also provided. The conductor parts can be bent twice or bent at least once, to form a U-piece twice, in a variant also more than twice. It is essential that one limb of the respective conductor part can be pushed through the inner hole of the core.
Die Erfindung hat den Vorteil, dass bei einem für hohe Ströme ausgelegten induktiven Bauelement hohe Induktivitätswerte bei einem geringen Bauvolumen erreichbar sind. Bei der Erhöhung der Induktivität geht die Windungszahl quadratisch ein.The invention has the advantage that in the case of an inductive component designed for high currents, high inductance values can be achieved with a small constructional volume. When increasing the inductance, the number of turns is quadratic.
Mit der Erfindung sind induktive Bauelemente mit einer hohen Kurzschlussfestigkeit realisierbar. Ein Massivleiter hat gegenüber einem flexiblen Stromleiter, der aus mehreren Stromadern zusammengesetzt ist, den Vorteil der geringen ohmschen Verluste. Der Massivleiter weist eine hohe Formstabilität und daher eine hohe mechanische Festigkeit auf. Aus einem Massivleiter realisierte Stromleiterteile haben den Vorteil, dass sie beim Verbinden mit weiteren Stromleiterteilen eine vorgegebene Form behalten.With the invention inductive components with a high short-circuit strength can be realized. A solid conductor has the advantage of low ohmic losses compared to a flexible conductor which is composed of several current wires. The solid conductor has a high dimensional stability and therefore a high mechanical strength. Conductor parts realized from a solid conductor have the advantage that they retain a predetermined shape when connected to further conductor parts.
Ein Massivleiter beim induktiven Bauelement gemäß Erfindung ist von einem biegsamen Draht, insbesondere von einem um einen Kern wickelbaren Draht zu unterscheiden. Die Stromtragfestigkeit des Massivleiters kann je nach Anwendung z. B. 200 A, 500 A, 1000 A oder 2500 A betragen. Der schwer biegsame Massivleiter ist vorzugsweise auch von einem biegsamen Massivleiter zu unterscheiden, der eine Stromtragfähigkeit von weniger als 150 A hat.A solid conductor in the inductive component according to the invention is to be distinguished from a flexible wire, in particular from a wire wound around a core. The current carrying capacity of the solid conductor may vary depending on the application z. 200A, 500A, 1000A or 2500A. The hard-to-bend Solid conductor is preferably also to be distinguished from a flexible solid conductor, which has a current carrying capacity of less than 150 A.
Der Massivleiter stellt vorzugsweise eine Stromschiene bzw. Sammelschiene mit einem rechteckigen Querschnitt dar. Der Massivleiter kann z. B. eine Kupferschiene oder eine Aluminiumschiene sein. Der Massivleiter kann auch aus einem anderen Metall mit einer guten elektrischen Leitfähigkeit bestehen. Der Massivleiter kann auch ein Flachleiter aus gestanztem Metall, z. B. Blech sein. Es ist vorteilhaft, wenn zumindest einer der fest miteinander verbundenen Leiterteile zwei einander gegenüber in der Höhe versetzte Kontaktbereiche aufweist.The solid conductor preferably represents a busbar or busbar with a rectangular cross section. The solid conductor can, for. B. be a copper rail or an aluminum rail. The solid conductor can also consist of another metal with a good electrical conductivity. The solid conductor can also be a flat conductor made of stamped metal, z. B. be sheet metal. It is advantageous if at least one of the firmly interconnected conductor parts has two contact areas which are offset in height from one another.
Die Leiterteile können z. B. U-förmige oder L-förmige Flachteile sein, wobei quer zueinander verlaufende Abschnitte des Leiterteils entweder in einer Ebene liegen oder in den Ebenen, die zueinander einen spitzen Winkel bilden.The ladder parts can z. B. U-shaped or L-shaped flat parts, wherein transverse sections of the conductor part are either in a plane or in the planes that form an acute angle to each other.
Der Stromleiter kann in einer Variante ein elektrischer Leiter ohne Isolierumhüllung sein. In einer weiteren Variante kann der Stromleiter eine Isolierumhüllung aufweisen. Die Isolierumhüllung kann z. B. durch einen Isolierlack oder eine Kunststoffschicht gebildet sein.The conductor may be in one variant, an electrical conductor without Isolierumhüllung. In a further variant, the current conductor can have an insulating sheath. The Isolierumhüllung can z. B. be formed by an insulating varnish or a plastic layer.
Der Stromleiter ist vorzugsweise aus mehreren Teilleitern zusammengesetzt, die z. B. durch Verschrauben, Verlöten oder Verschweißen mechanisch fest miteinander verbunden sind. Eine solche Ausgestaltung des Stromleiters erleichtert die Montage einer Wicklung bei geschlossenen Kernen.The conductor is preferably composed of a plurality of sub-conductors, the z. B. are mechanically firmly connected by screwing, soldering or welding. Such an embodiment of the conductor facilitates the installation of a winding with closed cores.
Die Verbindungsstelle zwischen verschiedenen Teilen des Stromleiters liegt vorzugsweise außerhalb des Innenraums des Magnetkerns, z. B. oberhalb der Ebene, in der die obere Stirnfläche des Magnetkerns liegt, oder unterhalb der Ebene, in der die untere Stirnfläche des Magnetkerns liegt.The junction between different parts of the conductor is preferably outside the interior of the magnetic core, for. B. above the plane in which the upper end face of the magnetic core is located, or below the plane in which the lower end face of the magnetic core is located.
Der Magnetkern kann in einer Variante als ein homogener geschlossener Ringkern mit oder ohne Spalt ausgebildet sein. Der Spalt kann mit einem Material mit einer vom Material des Kerns verschiedenen magnetischen Permeabilität ausgefüllt sein. In einer anderen Variante kann der Magnetkern aus mehreren Teilen, z. B. aus zwei U- oder E-Teilen zusammengesetzt sein. Der Kern kann auch aus einem E-förmigen und einem stabförmigen Kernteil gebildet sein, wobei sich zwei geschlossene Magnetkreise ausbilden. Die dabei gebildeten Spalte können mit einem Material mit einer von Material des Kerns unterschiedlichen magnetischen Permeabilität ausgefüllt sein. In diesen Spalten kann auch ein Klebstoff zur Verbindung der Kernteile miteinander angeordnet sein.The magnetic core can be designed in one variant as a homogeneous closed ring core with or without a gap. The gap may be filled with a material having a different magnetic permeability from the material of the core. In another variant, the magnetic core of several parts, for. B. composed of two U or E parts. The core may also be formed of an E-shaped and a rod-shaped core part, forming two closed magnetic circuits. The gaps formed in this case can be filled with a material having a different magnetic permeability from material of the core. In these columns, an adhesive for connecting the core parts can be arranged together.
Der Kern oder der Kernteil kann z. B. aus Eisen, Metalloxiden, Keramik, Kunststoff, Ferriten oder anderen weichmagnetischen Materialien oder deren Legierungen bestehen. Der Kern oder der Kernteil kann aus Eisenblechen zusammengesetzt sein.The core or the core part can, for. Example of iron, metal oxides, ceramics, plastic, ferrites or other soft magnetic materials or alloys thereof. The core or the core part may be composed of iron sheets.
Der Magnetkern kann mehrteilig sein, wobei die Kernteile jeweils einen geschlossenen Magnetkreis aufweisen und entlang der Kernachse übereinander angeordnet sind. Der Magnetkern kann entlang seiner Mittelachse geteilt sein in zwei U-förmige Teile oder zwei E-förmige Teile.The magnetic core may be multi-part, wherein the core parts each have a closed magnetic circuit and are arranged one above the other along the core axis. The magnetic core may be divided along its central axis into two U-shaped parts or two E-shaped parts.
Die vorgebogenen oder abgewinkelten Teile des Stromleiters können jeweils durch das Innenloch des Magnetkerns durchgesteckt und danach außerhalb des Innenlochs des Kerns miteinander verbunden werden.The pre-bent or angled parts of the conductor can be inserted through the inner hole of the magnetic core and then connected together outside of the inner hole of the core.
Vorzugsweise werden vorgebogene Leiter in einem einteiligen Magnetkern zusammengesetzt.Preferably, pre-bent conductors are assembled in a one-piece magnetic core.
Bei einem zusammengesetzten Magnetkern ist es möglich, zunächst den Stromleiter zu biegen oder die Teile des Stromleiters miteinander zu verbinden, wobei Windungen einer Wicklung gebildet werden. Der erste Kernteil wird durch die Windungen des Stromleiters durchgesteckt. Der erste Kernteil wird dann mechanisch mit einem zweiten Kernteil verbunden. Bei einer Drossel mit zwei Wicklungen wird auch der zweite Kernteil durch die Windungen eines weiteren Stromleiters durchgesteckt. Die beiden Kernteile mit Wicklungen werden dann mechanisch miteinander verbunden.In a composite magnetic core, it is possible first to bend the conductor or to connect the parts of the conductor together, wherein turns of a winding are formed. The first core part is pushed through the windings of the conductor. The first core part is then mechanically connected to a second core part. In a choke with two windings and the second core part is pushed through the turns of another conductor. The two core parts with windings are then mechanically interconnected.
Der Stromleiter wird im Bauelement vorzugsweise so fixiert, dass er den Kern nicht berührt. Die Anordnung des Kerns und des Stromleiters oder Teile der Anordnung können im Gehäuse des Bauelements z. B. mittels eines Vergusses fixiert werden. Möglich ist auch, den Kern und den Stromleiter am Gehäuse unabhängig voneinander zu befestigen.The conductor is preferably fixed in the device so that it does not touch the core. The arrangement of the core and the conductor or parts of the arrangement may be in the housing of the device z. B. be fixed by means of a potting. It is also possible to attach the core and the conductor to the housing independently.
Der Stromleiter bildet vorzugsweise eine Wicklung, die um den Magnetkern gewickelt ist. Jeder Windung des Stromleiters ist eine eigene Wickelebene zugeordnet. An der Verbindungsstelle kann ein Teil des Stromleiters so abgewinkelt werden, dass dadurch der Wechsel von einer Wickelebene zur nächsten Wickelebene stattfindet. Der Übergang zur nächsten Wickelebene kann auch durch abgewinkelte Verbindungsstücke zwischen den Teilen des Stromleiters erreicht werden.The current conductor preferably forms a winding which is wound around the magnetic core. Each turn of the conductor is assigned its own winding level. At the junction, a portion of the conductor can be angled so that thereby takes place the change from one winding plane to the next winding plane. The transition to the next winding level can also be achieved by angled connectors between the parts of the conductor.
Die Erfindung kann beispielsweise als eine stromkompensierte Drossel in einem für zwei, drei oder > 3 Stromphasen geeigneten Netzfilter eingesetzt werden.The invention can be used, for example, as a current-compensated choke in a line filter suitable for two, three or> 3 current phases.
In einer Variante können im induktiven Bauelement auch mehr als nur zwei verschiedene Wicklungen eingesetzt werden, die z. B. mit jeweils einer Stromphase eines mehrphasigen Stromnetzes elektrisch verbunden sind. Dabei ist jede der Wicklungen im Wesentlich wie der oben beschriebene erste Stromleiter gebildet.In one variant, more than just two different windings can be used in the inductive component, the z. B. are electrically connected to one power phase of a multi-phase power system. In this case, each of the windings is essentially formed as the first current conductor described above.
In einer Variante (
Im folgenden wird die Erfindung anhand von Ausführungsbeispielen und der dazugehörigen Figuren näher erläutert. Die Figuren zeigen anhand schematischer und nicht maßstabsgetreuer Darstellungen verschiedene Ausführungsbeispiele der Erfindung. Gleiche oder gleich wirkende Teile sind mit gleichen Bezugszeichen bezeichnet. Es zeigen schematisch
-
den Querschnitt eines induktiven Bauelements mit einem GehäuseFigur 1 -
Figur 2 die perspektivische Ansicht eines Netzfilters mit einem induktiven Bauelement gemäß Erfindung -
Figuren 3A bis 3F Verfahrensschritte bei der Montage des Stromleiters am Magnetkern -
die perspektivische Ansicht eines induktiven Bauelements mit einer Wicklung, die aus L-förmigen Flachleiterteilen zusammengesetzt ist.Figur 4
-
FIG. 1 the cross section of an inductive component with a housing -
FIG. 2 the perspective view of a network filter with an inductive component according to the invention -
FIGS. 3A to 3F Process steps in the assembly of the conductor to the magnetic core -
FIG. 4 the perspective view of an inductive component with a winding, which is composed of L-shaped flat conductor parts.
Der erste Teil 11 des ersten Stromleiters 1 weist zwei Öffnungen zur Aufnahme von Befestigungselementen 71, eine in
Der erste Teil 11 des ersten Stromleiters 1 kann je nach Ausführung nur eine Öffnung zur Aufnahme von Befestigungselementen oder mehr als zwei solche Öffnungen aufweisen.Depending on the embodiment, the
Der zweite Teil 12 des ersten Stromleiters 1 weist zwei Öffnungen zur Aufnahme von Befestigungselementen 71, eine in
Der erste Stromleiter 1 verläuft zweimal durch das Innenloch 31 des geschlossenen Magnetkerns 3. Der zweite Stromleiter 2 verläuft ebenfalls zweimal durch das Innenloch 31 des Magnetkerns 3. Der zweite Stromleiter 2 ist ähnlich aufgebaut wie der erste Stromleiter 1.The
Die Teile 11, 12 des Stromleiters 1 sind so aufgebaut, dass sie jeweils leicht durch den Magnetkern 3 durchgesteckt werden können. Die Zerlegung des Stromleiters 1 in die Teilstücke 11, 12 kann z. B. - wie in
Der Stromleiter 1 kann je nach der vorgegebenen Anzahl der Windungen in mehr als nur zwei Teilstücke zerlegt werden. Es ist vorteilhaft, die Teilstücke mit U-förmigen Bereichen auszubilden, wobei die (vorzugsweise kürzeren) Schenkel verschiedener U-Teile teilweise miteinander überlappen. Zwischen die Schenkel eines U-Teils kann der Kern eingeführt werden. Die Teilstücke 11, 12 des ersten Stromleiters 1 und die Teilstücke 21, 22 des zweiten Stromleiters 2 sind nach außen hin vorzugsweise so abgewinkelt, dass der Abstand zwischen den ersten Bauelement-Anschlüssen 111 und 211 dem Abstand zwischen den zweiten Bauelement-Anschlüssen 112 und 212 gleich ist.The
Vorzugsweise werden nur Teilstücke verwendet, die jeweils für sich weniger als eine ganze Windung um den Kern bilden. Sie bilden vorzugsweise eine halbe oder dreiviertel Windung.Preferably, only parts are used, each of which forms less than a whole turn around the core. They preferably form a half or three quarters turn.
Der erste Stromleiter 1 ist mittels der isolierenden Einsätze 51, 53 im Gehäuse 4 befestigt und elektrisch von diesem isoliert. Der zweite Stromleiter 2 ist mittels der isolierenden Einsätze 52, 54 im Gehäuse 4 befestigt und elektrisch von diesem isoliert. Die Einsätze 51 bis 54 sind im Gehäuse mittels der Befestigungselemente 74, 75 befestigt.The
Der Magnetkern 3 ist ein Ringkern mit einem Innenloch 31. Der Magnetkern 3 ist hier dreiteilig, wobei die Kernteile jeweils einen geschlossenen Magnetkreis aufweisen und entlang der Kernachse übereinander angeordnet sind. Der Magnetkern 3 ist im Gehäuse 4 so befestigt, dass er die Windungen der Stromleiter 1, 2 nicht berührt. In einer weiteren Variante kann die Windung den Kern berühren, falls der Kern aus einem elektrisch isolierenden Material oder die Wicklung von Kern elektrisch isoliert ist.The
Das Gehäuse 4 umschließt den Magnetkern 3, den ersten Stromleiter 1 bis auf seine Anschlüsse 111, 112 sowie den zweiten Stromleiter 2 bis auf seine Anschlüsse 211, 212. Das Gehäuse 4 weist Öffnungen 41 zur Aufnahme von weiteren Befestigungselementen auf, mit welchen das gesamte Bauteil z. B. auf einem Panel bzw. in einem Blechschrank befestigt werden kann. Die Öffnungen 41 können auch Nietbohrungen für einen Gehäusedeckel sein.The
Zunächst wird der geschlossene Magnetkern 3 und die Teilstücke 11, 12 des ersten Stromleiters 1 sowie die Teilstücke 21, 22 des zweiten Stromleiters 2 bereitgestellt. Die Teilstücke 11, 12, 21, 22 des ersten 1 und des zweiten 2 Stromleiters sind U-förmig mit einem abgewinkelten längeren Schenkel ausgebildet. Der erste Teil 11 des ersten Stromleiters 1 sowie der erste Teil 21 des zweiten Stromleiters 2 wird von unten über die Wand des Magnetkerns 3 durchgesteckt (
Der Magnetkern kann in einer Variante vor dem Durchstecken der Teilstücke 11, 12, 21, 22 im Gehäuse fixiert werden. In einer anderen Variante kann der Magnetkern erst nach dem Ausrichten und Fixieren der Teilstücke 11, 12, 21, 22 im Gehäuse fixiert werden.The magnetic core can be fixed in a variant prior to the passage of the
Bei der in
Die ersten Teilstücke 11, 21 können aber auch in einem einzigen Schritt durchgesteckt bzw. montiert werden, wobei die zweiten Teilstücke 12, 22 in einem weiteren Schritt durchgesteckt und montiert werden.The
Die Reihenfolge der Verfahrensschritte kann im Prinzip beliebig gewählt werden.The order of the method steps can be chosen arbitrarily in principle.
In
Übereinander angeordnete Bereiche von Flachleiterteilen 11', 12' und 13' sind einem Verbindungsbereich 101, 102, 103, 104 zugeordnet. Die Verbindungsbereiche 101 und 103, 102 und 103, 102 und 104 von zwei Flachleiterteilen sind entlang von jeweils einer Diagonalen angeordnet. Die Flachleiterteile sind in den Verbindungsbereichen fest miteinander verbunden, z. B. verschweißt, verschraubt oder hart gelötet. Die Teile des Stromleiter 1 können Öffnungen zur Aufnahme von Befestigungselementen 71, 73, 76 aufweisen.Superimposed regions of flat conductor parts 11 ', 12' and 13 'are assigned to a
Die ersten Flachleiterteile 11' und 13' sind mittels eines zweiten Flachleiterteils 12' miteinander verbunden. Der zweite Flachleiterteil 12' weist keinen Knick auf und ist in einer Wicklungsebene angeordnet. Er kann im Prinzip aber auch wie die Teile 11', 13' geknickt sein.The first flat conductor parts 11 'and 13' are connected to each other by means of a second flat conductor part 12 '. The second flat conductor part 12 'has no kink and is arranged in a winding plane. In principle, however, it can also be folded like the parts 11 ', 13'.
Die Wicklung kann in einer Variante mehr als nur zwei erste Teile 11', 13' und nur einen zweiten Teil 12' umfassen. Obwohl in
Der Leiterteil 11' ist fest mit dem Anschlussstück 111 und der Leiterteil 13' mit dem Anschlussstück 112 verbunden. Die Anschlussstücke weisen vorzugsweise jeweils mindestens eine Öffnung zur Aufnahme eines Befestigungselements auf.The conductor part 11 'is fixedly connected to the
Die L-Stücke in
Der Magnetkern in
Die Erfindung ist nicht auf das vorgestellte Beispiel oder bestimmte Materialien beschränkt. Weiterbildungen der Erfindung z. B. bezüglich der Ausgestaltung der Verbindungsstelle zwischen verschiedenen Teilen des Stromleiters oder bezüglich der Befestigung von Teilen der Anordnung des Kerns und des Stromleiters sind vorgesehen.The invention is not limited to the example presented or certain materials. Further developments of the invention z. As regards the configuration of the connection point between different parts of the conductor or with respect to the attachment of parts of the arrangement of the core and the conductor are provided.
Die in Zusammenhang mit den vorgebogenen Leiterteilen 11, 12; 21, 22 erläuterte technische Lehre (
- 11
- erster Stromleiterfirst conductor
- 22
- zweiter Stromleitersecond conductor
- 1111
- erster Teil des ersten Stromleitersfirst part of the first conductor
- 1212
- zweiter Teil des ersten Stromleiterssecond part of the first conductor
- 2121
- erster Teil des zweiten Stromleitersfirst part of the second conductor
- 2222
- zweiter Teil des zweiten Stromleiterssecond part of the second conductor
- 11a, 11b, 12a, 12b11a, 11b, 12a, 12b
- Öffnungenopenings
- 111111
- erster Anschluss des ersten Stromleitersfirst connection of the first conductor
- 112112
- zweiter Anschluss des ersten Stromleiterssecond connection of the first conductor
- 211211
- erster Anschluss des zweiten Stromleitersfirst connection of the second conductor
- 212212
- zweiter Anschluss des zweiten Stromleiterssecond terminal of the second conductor
- 33
- Magnetkernmagnetic core
- 3131
-
Innenloch des Magnetkerns 3Inner hole of the
magnetic core 3 - 44
- Gehäusecasing
- 4141
- Öffnung zur Aufnahme von BefestigungselementenOpening for receiving fasteners
- 51 bis 5451 to 54
- isolierende Einsätzeinsulating inserts
- 66
- Kondensatorcapacitor
- 71 bis 7671 to 76
- Befestigungselementefasteners
- 7777
-
Öffnungen zur Aufnahme von Befestigungselementen 76Openings for receiving
fasteners 76 - 88th
- Leiterplattecircuit board
- 81 bis 8381 to 83
- Kondensatorencapacitors
- 8484
- Kupferband (elektrische Verbindung zwischen der Leiterplatte und dem Gehäuse 4)Copper tape (electrical connection between the printed circuit board and the housing 4)
Claims (19)
mit einem geschlossenen Magnetkern (3),
mit einem ersten Stromleiter (1), der mindestens zweimal durch das Innere des Magnetkerns (3) läuft,
wobei der Stromleiter (1) mehrere L-förmige Teile (11', 12', 13') aus einem Flachleiter umfasst, die fest miteinander verbunden sind.Inductive component
with a closed magnetic core (3),
with a first current conductor (1) running at least twice through the interior of the magnetic core (3),
wherein the current conductor (1) comprises a plurality of L-shaped parts (11 ', 12', 13 ') of a flat conductor, which are fixedly connected to each other.
wobei die aneinander angeschlossenen L-förmigen Teile übereinander angeordnete Enden aufweisen, die in verschiedenen Wicklungsebenen liegen.Component according to Claim 1,
wherein the connected L-shaped parts have superimposed ends lying in different winding levels.
wobei mindestens ein erster L-förmiger Teil (11') derart abgeknickt ist, dass er in verschiedenen Wicklungsebenen angeordnete flache Abschnitte (11a, 11c) und einen schräg zu diesen Ebenen verlaufenden flachen Abschnitt (11b) aufweist.Component according to Claim 1,
wherein at least a first L-shaped part (11 ') is bent such that it has in different winding planes arranged flat portions (11 a, 11 c) and an obliquely to these planes extending flat portion (11 b).
wobei mindestens zwei L-förmige, übereinander angeordnete erste Teile (11', 13') vorgesehen sind, deren diagonal gegenüber liegende Enden fest mit verschiedenen Enden eines zweiten L-förmigen Teils (12') verbunden sind.Component according to one of claims 1 to 3,
wherein at least two L-shaped superimposed first parts (11 ', 13') are provided whose diagonally opposite ends are fixedly connected to different ends of a second L-shaped part (12 ').
wobei der zweite Teil (12') und die mit diesem verbundenen Enden der ersten Teile (11', 13') in einer gemeinsamen Ebene angeordnet sind.Component according to one of claims 1 to 4,
wherein the second part (12 ') and the ends of the first parts (11', 13 ') connected thereto are arranged in a common plane.
wobei die L-förmigen Teile (11', 12', 13') gestanzt sind.Component according to one of claims 1 to 5,
wherein the L-shaped parts (11 ', 12', 13 ') are punched.
wobei der Stromleiter (1) eine Stromschiene ist, dessen Stromtragfestigkeit 150 A oder mehr beträgt oder dessen Stromtragfestigkeit 500 A oder mehr beträgt.Component according to one of claims 1 to 6,
wherein the current conductor (1) is a bus bar whose current carrying capacity is 150 A or more, or whose current carrying strength is 500 A or more.
bei dem die Teile (11, 12) des Stromleiters (1) mechanisch miteinander verbunden sind.Component according to one of claims 1 to 7,
in which the parts (11, 12) of the current conductor (1) are mechanically connected to one another.
bei dem die Verbindungsstelle außerhalb eines Raumes liegt, der durch zwei Ebenen, in denen die Stirnflächen des Magnetkerns (3) liegen, begrenzt ist.Component according to one of claims 1 to 8,
in which the connection point is outside a space bounded by two planes in which the end faces of the magnetic core (3) lie.
bei dem der Stromleiter (1) mehrere in jeweils einer eigenen Wickelebene liegende Windungen aufweist,
wobei der Übergang zwischen zwei Wickelebenen im Bereich der Verbindungsstelle erfolgt.Component according to Claim 8 or 9, characterized
in which the current conductor (1) has several turns, each in its own winding plane,
wherein the transition between two winding levels takes place in the region of the connection point.
bei dem verschiedene Teile des Stromleiters (1) aneinander mittels Befestigungselementen (71, 72) befestigt sind oder bei dem verschiedene Teile des Stromleiters (1) miteinander verschweißt, verlötet oder vernietet sind.Component according to one of claims 1 to 10,
in which various parts of the conductor (1) are fastened to each other by means of fastening elements (71, 72) or in which various parts of the conductor (1) are welded together, soldered or riveted.
bei dem der Stromleiter (1) zwei Anschlüsse (111, 112) aufweist, die zu verschiedenen Stirnseiten des Magnetkerns (3) herausgeführt sind.Component according to one of claims 1 to 11,
in which the current conductor (1) has two terminals (111, 112) which are connected to different end faces of the magnetic core (3) led out.
mit einem Gehäuse (4), das den Magnetkern (3) und den Stromleiter (1) bis auf seine Anschlüsse (111, 112) komplett umschließt.Component according to one of Claims 1 to 12,
with a housing (4) which completely surrounds the magnetic core (3) and the current conductor (1) except for its terminals (111, 112).
bei dem der Magnetkern (3) und der Stromleiter (1) im Gehäuse (4) durch einen Verguss fixiert ist.Component according to Claim 13,
in which the magnetic core (3) and the current conductor (1) in the housing (4) is fixed by a potting.
mit mindestens einem zweiten Stromleiter (2), der mindestens zweimal durch das Innere des Magnetkerns (3) läuft,
wobei der zweite Stromleiter (2) ein Massivleiter ist, der mehrere fest miteinander verbundene L-förmige Teile umfasst.Component according to one of claims 1 to 14,
with at least one second current conductor (2) running at least twice through the interior of the magnetic core (3),
wherein the second conductor (2) is a solid conductor comprising a plurality of fixedly connected L-shaped parts.
wobei der abgewinkelte oder vorgebogene zweite Teil (12) des ersten Stromleiters (1) durch das Innenloch des Magnetkerns (3) geschoben wird.Method according to claim 16,
wherein the angled or pre-bent second part (12) of the first conductor (1) through the inner hole of the magnetic core (3) is pushed.
wobei zumindest ein Teil, ausgewählt aus dem ersten Teil (11) und dem zweiten Teil (12), L-förmig ist.Method according to claim 16 or 17,
wherein at least a part selected from the first part (11) and the second part (12) is L-shaped.
bei dem der erste und zweite Teil (11, 12) des ersten Stromleiters (1) im Gehäuse (4) des Bauelements fixiert wird.Method according to one of claims 16 to 18,
in which the first and second parts (11, 12) of the first current conductor (1) are fixed in the housing (4) of the component.
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-
2005
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- 2005-08-11 EP EP05774087.0A patent/EP1776709B1/en active Active
- 2005-08-11 EP EP12153862.3A patent/EP2458598B1/en active Active
- 2005-08-11 US US11/573,616 patent/US8063728B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
EP1776709B1 (en) | 2014-06-25 |
JP2008509568A (en) | 2008-03-27 |
US8063728B2 (en) | 2011-11-22 |
CN1993782A (en) | 2007-07-04 |
WO2006015589A1 (en) | 2006-02-16 |
US20080012675A1 (en) | 2008-01-17 |
CN1993782B (en) | 2011-05-11 |
EP1776709A1 (en) | 2007-04-25 |
DE102004039230A1 (en) | 2006-02-23 |
EP2458598B1 (en) | 2017-09-27 |
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