WO2006045834A1 - Electromagnetic core - Google Patents
Electromagnetic core Download PDFInfo
- Publication number
- WO2006045834A1 WO2006045834A1 PCT/EP2005/055603 EP2005055603W WO2006045834A1 WO 2006045834 A1 WO2006045834 A1 WO 2006045834A1 EP 2005055603 W EP2005055603 W EP 2005055603W WO 2006045834 A1 WO2006045834 A1 WO 2006045834A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electromagnetic core
- core
- electromagnetic
- magnetic
- electrical
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
-
- 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
-
- 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
- H01F2027/2857—Coil formed from wound foil conductor
-
- 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
- H01F27/25—Magnetic cores made from strips or ribbons
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0014—Capacitor filters, i.e. capacitors whose parasitic inductance is of relevance to consider it as filter
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0092—Inductor filters, i.e. inductors whose parasitic capacitance is of relevance to consider it as filter
Definitions
- the invention relates to an electromagnetic core.
- the invention particularly relates to an electromagnetic core for construction of an electromagnetic component.
- Electromagnetic components in particular chokes, usually comprise an electromagnetic core of magnetic material around which an electrical conductor is wound in one or more windings.
- Electrodes which are separated by dielectric M aterial Electrodes which are separated by dielectric M aterial.
- Chokes and capacitors are often used together in electrical circuits, for example in electrical devices. Chokes are often relatively large because of the dimensions of the magnetic core. Under certain circumstances, it can be difficult to chokes and
- the aim of the invention is therefore to propose a magnetic core which allows the construction of compact electrical circuits.
- Another object of the invention is to propose a magnetic core which allows to build up electromagnetic components with new functions.
- an electromagnetic core to build an electromagnetic component, wherein the core is constructed such that it forms an electrical capacitor.
- FIG. 1 is a schematic representation of the principle of the invention.
- FIG. 1 is a schematic representation of the principle of the invention.
- FIG. 2 shows an embodiment of a magnetic core according to the invention
- FIG. 3 shows a further embodiment of a magnetic core according to the invention
- FIG. 4 shows a further embodiment of a magnetic core according to the invention
- FIG. 3 shows a further embodiment of a magnetic core according to the invention
- FIG. 4 shows a further embodiment of a magnetic core according to the invention
- FIG. 5 shows a further embodiment of a magnetic core according to the invention
- FIG. 6 shows a detail of the core of FIG. 5
- FIG. 7 shows a schematic side view of the core of FIG. 5, FIG.
- FIG. 8 shows a throttle with a magnetic core according to the invention
- FIG. 9 shows a further embodiment of a magnetic core according to the invention.
- the magnetic core of the invention comprises two partial cores 1, 2, which preferably consist of a magnetic and electrically conductive material. These two partial cores 1, 2 are electrically isolated from each other by a dielectric material 3 (for example, by an insulating film). The two partial cores 1, 2 thus form the two electrodes of a capacitor. Thus, as such, they can be connected to an electrical circuit through dedicated electrical connections.
- An electrical conductor is preferably wound around the magnetic core to form a choke.
- very different magnetic cores with different shapes and / or of different materials can be formed, wherein the choice of a particular shape and a particular material depends mainly on the planned use of the electromagnetic component, ie in principle of their desired mechanical and electromagnetic properties.
- the material for construction on the part cores 1, 2 good magnetic Bgenschaften to ensure the desired electrical characteristics of the constructed throttle.
- the material of the partial cores 1, 2 must also have good electrical conductivity properties in order to be able to build on a capacitor with sufficient charge and discharge properties.
- FIG. 2 shows an exemplary embodiment, wherein the core of the invention consists of two ring-shaped magnetic part cores 1, 2, which are electrically insulated from one another by an annular dielectric film 3. Each sub-core 1, 2 thus forms an electrode of the capacitor. An electrical conductor can then be wound around this core to form an electrical coil.
- the gist of the invention may also be arranged around a central conductor to form a single-winding coil.
- FIG. 3 shows another embodiment of an annular magnetic core according to the present invention.
- Both partial cores 1, 2 of the magnetic core of the invention are made of, for example, ferrite or sintered material having sufficient conducting properties.
- the dielectric material 3 then has, for example, the shape of a f aure ring whose thickness is determined as a function of the desired capacitance of the resulting capacitor.
- FIG. 4 shows an embodiment in which the roughness of the opposite sides of the split cores 1, 2 is increased to increase the capacitance of the magnetic core of the invention
- the resulting magnetic core is also ring-shaped.
- the core may also be made of, for example, ferrite or sintered material.
- this principle of increasing the surface area of the electrodes to increase the capacity of the incorporated core can be used with other shapes and materials.
- the Enlargement of the avenge is achieved with a toothed avenge.
- other forms of the surface of the electrodes 1, 2 are possible within the scope of the invention, such as concave and / or convex atres, etc.
- FIG. 5 shows an example of a magnetic core according to the invention, which can be used to construct a feedthrough component.
- the magnetic core is wound like a conventional capacitor but with magnetic foil.
- Wound capacitors are constructed by winding two electrically conductive foils, usually of aluminum, with two insulating foils.
- the insulating films are the dielectric material of the capacitor and these electrically insulate the conductive films from each other.
- Each Metallf olie thus represents an electrode of the capacitor, wherein the capacity depends inter alia on the surface of the films.
- the magnetic core is wound with foils 10, 20 of a magnetic material (for example Fe metal foils) and two insulating foils 30.
- the wound magnetic core of the invention is fabricated by contacting each magnetic film 10, 20 on one end with a corresponding annular contact element 11, 21.
- the wound magnetic toroidal core is then preferably still additionally wrapped in a housing, not shown, in order to hold the wound films 10, 20, 30 and the contact elements 11, 21 in place.
- the housing also allows easier handling of the finished core.
- each partial core 1, 2 of the magnetic core thus comprises a wound magnetic film 10, resp. 20 and the corresponding
- the magnetic core is used in the housing 5 of a feed-through component (for example a feed-through filter).
- a feed-through component for example a feed-through filter.
- each magnetic foil 10, 20 of electrically conductive material forms an electrode of the incorporated capacitor.
- the capacitor is in the Rlterscaria of fürf llungsbauteelements turned on by a first magnetic sheet 20 is placed, for example, over the corresponding annular contact element 21 with the inner conductor 4 in electrical contact, while the other magnetic FoOe O, for example, over the other annular contact element 1 1 and through the housing 5 of fürf hausenungsbauteelements is connected to an electrical ground, not shown.
- an LC circuit is formed with the inner conductor 4.
- a pair of ⁇ filter circuits may be formed with two such series gangs.
- FIG. 6 shows a detail of the core of FIG. 5.
- FIG. 7 is a schematic side view of the wound magnetic core of FIG. 5 without the contact elements 11, 21.
- FIG. 7 is a schematic side view of the wound magnetic core of FIG. 5 without the contact elements 11, 21.
- FIG. 8 shows an example of a reactor having a magnetic core according to an embodiment of the invention.
- the core is a rod-shaped core having a first sub-core 1 and a second sub-core 2, which form the electrodes of a capacitor.
- the split cores 1, 2 are electrically isolated from each other by a layer 3 of dielectric material.
- an electrical conductor 9 is wound, which thus forms the winding of the throttle.
- the conductor 9 can be contacted at its ends to the throttle in electrical contact with other electrical components of an electrical
- FIG. 9 shows an example of another embodiment.
- the magnetic core of the invention comprises three electrodes 1, 2, 6.
- the resulting capacitance of the built-in capacitor thus arises from the series connection of the capacitance of a first capacitor, which consists of the electrodes 1 and 6, with the capacitance of a second capacitor consists of the electrodes 6 and 2, wherein the electrodes 1, 6 and 6, 2 of each capacitor are separated from each other by the dielectric material 3.
- Bn such capacitor is carried out, for example, by the films 1, 2, 3 are wound with an additional magnetic film 6.
- the magnetic film 6 serves, for example, to increase the mass of magnetic matter in the core to improve the magnetic properties of the core.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH17942004 | 2004-10-28 | ||
CH01794/04 | 2004-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006045834A1 true WO2006045834A1 (en) | 2006-05-04 |
Family
ID=35512367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/055603 WO2006045834A1 (en) | 2004-10-28 | 2005-10-27 | Electromagnetic core |
Country Status (1)
Country | Link |
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WO (1) | WO2006045834A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0336771A2 (en) * | 1988-04-08 | 1989-10-11 | International Standard Electric Corporation | Integrated capacitor and inductors/transformers utilising insulated amorphous metal ribbon |
EP0982742A1 (en) * | 1998-03-13 | 2000-03-01 | Matsushita Electric Industrial Co., Ltd. | Module and method of manufacture |
WO2004021566A1 (en) * | 2002-08-30 | 2004-03-11 | Epcos Ag | Filter circuit for networks |
-
2005
- 2005-10-27 WO PCT/EP2005/055603 patent/WO2006045834A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0336771A2 (en) * | 1988-04-08 | 1989-10-11 | International Standard Electric Corporation | Integrated capacitor and inductors/transformers utilising insulated amorphous metal ribbon |
EP0982742A1 (en) * | 1998-03-13 | 2000-03-01 | Matsushita Electric Industrial Co., Ltd. | Module and method of manufacture |
WO2004021566A1 (en) * | 2002-08-30 | 2004-03-11 | Epcos Ag | Filter circuit for networks |
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