WO2016003190A1 - 가변 인덕터 및 그 제조 방법 - Google Patents
가변 인덕터 및 그 제조 방법 Download PDFInfo
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- WO2016003190A1 WO2016003190A1 PCT/KR2015/006760 KR2015006760W WO2016003190A1 WO 2016003190 A1 WO2016003190 A1 WO 2016003190A1 KR 2015006760 W KR2015006760 W KR 2015006760W WO 2016003190 A1 WO2016003190 A1 WO 2016003190A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
- H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
- H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
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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
- H01F27/24—Magnetic cores
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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
- H01F27/24—Magnetic cores
- H01F27/25—Magnetic cores made from strips or ribbons
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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
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
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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
- H01F27/2823—Wires
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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
- H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
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- 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
Definitions
- the present invention relates to a variable inductor and a method of manufacturing the same, and more particularly, to a variable inductor and a method of manufacturing the variable inductor capable of adjusting the magnetic saturation characteristics of the inductor.
- An inductor is a passive device manufactured by winding a wire around a core or a coil wound around a core according to the purpose of various electronic circuits by using energy stored in a field of a magnetic field generated by the flow of current.
- the inductor intrinsic constant is called inductance in relation to the voltage across the inductor, and the inductance value varies depending on the material and shape of the inductor.
- a typical inductor has a constant inductance value for the current until the inductor is saturated because its inductance is constant.
- Such a characteristic is that when a constant inductor is used in a power converter of an electronic device requiring a large power, there is a disadvantage in that power transmission efficiency is poor due to a variable load characteristic.
- variable inductor for varying the inductance of the inductor
- by using a mechanical tap on the main winding, or by winding an auxiliary winding other than the main winding to use a separate power drive for additional magnetic flux supply Because of the need for additional circuitry for sensing the amount of current, it has disadvantages such as increased efficiency, economy, volume and circuit complexity.
- the present invention has been invented to achieve the above-described needs, and an object of the present invention is to provide an inductor having an inductance saturation characteristic that varies according to the amount of current using a magnetic iron core made of a heterogeneous magnetic material, and a method of manufacturing the inductor. To provide.
- Inductor for achieving the above object, includes a magnetic core having a predetermined form and a coil portion surrounding one region of the magnetic iron core, and generates a magnetic flux according to the flow of current,
- the magnetic core is composed of a first magnetic region composed of a first magnetic material and a second magnetic region composed of a second magnetic material different from the first magnetic material.
- the second magnetic region may be composed of a plurality of magnetic components and a nonmagnetic material surrounding the plurality of magnetic components.
- the plurality of magnetic components may be arranged at predetermined intervals.
- the plurality of magnetic components may be arranged in a plurality of layers in the nonmagnetic material.
- the plurality of magnetic components and the nonmagnetic material may have a predetermined volume ratio.
- the plurality of magnetic components may be disposed only on a predetermined region of the nonmagnetic material.
- the plurality of magnetic components may be at least one of magnetic pieces and magnetic powder.
- the second magnetic region may be composed of a plurality of zones having different permeability.
- the second magnetic region may have a form in which the plurality of zones are arranged in a direction parallel to a direction in which the magnetic flux passes through the second magnetic region.
- the second magnetic region may have a shape in which the plurality of zones are disposed in a direction perpendicular to a direction in which the magnetic flux passes through the second magnetic region.
- the plurality of zones may be disposed in one space connected to each other, or may be disposed in a plurality of spaces separated from each other.
- the plurality of zones may move to shift from the volume extending from the first magnetic region to the second magnetic region within the magnetic iron core.
- the second magnetic region may be configured such that only a portion of the plurality of zones occupy the volume.
- the inductor may further include a control unit for controlling the transfer device to move the plurality of zones in accordance with the load connected to the secondary side of the transfer device and power conversion circuit for moving the plurality of zones.
- inductor manufacturing method comprising the steps of providing a magnetic core having a predetermined shape, forming a void in one region of the provided magnetic iron core, the formation of the magnetic iron core in the formed void Filling with a magnetic material different from the magnetic material, and winding the coil around a region of the magnetic iron core filled with the other magnetic material.
- the other magnetic material may be composed of a plurality of magnetic components and a nonmagnetic material surrounding the plurality of magnetic components.
- the plurality of magnetic components may be arranged at predetermined intervals.
- the plurality of magnetic components may be arranged in a plurality of layers in the nonmagnetic material.
- the plurality of magnetic components and the nonmagnetic material may have a predetermined volume ratio.
- the plurality of magnetic components may be disposed only on a predetermined region of the nonmagnetic material.
- the plurality of magnetic components may be at least one of magnetic pieces and magnetic powder.
- the inductor according to various embodiments as described above may facilitate the design of the saturation characteristics of the coil to have a different inductance according to the load amount.
- FIG. 1 is a perspective view showing the configuration of an inductor according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing the configuration of an inductor according to an embodiment of the present invention
- FIG. 4 is a cross-sectional view of a plane and side surfaces for illustrating a configuration of a second magnetic region according to a first embodiment of the present invention
- FIG. 5 is a view for showing parameters for the configuration of a second magnetic region according to the first embodiment of the present invention.
- FIG. 6 is a view for showing parameters for the configuration of a second magnetic region according to the first embodiment of the present invention.
- FIG. 7 is a cross-sectional view showing a configuration of a second magnetic region according to the second embodiment of the present invention.
- FIG. 8 is a view for illustrating another configuration of the second magnetic region according to the second embodiment of the present invention.
- FIG. 9 is a view illustrating a B-H curve of a second magnetic region having various configurations according to an embodiment of the present invention.
- FIG. 10 is a view showing a change in saturation characteristics when different parameters of the second magnetic region according to the first embodiment of the present invention.
- 11 is a view showing a change in saturation characteristics when the composition ratio of the second magnetic region according to the second embodiment of the present invention is different;
- FIG. 12 is a view showing a change in saturation characteristics when the volume ratio of the second magnetic region according to the second embodiment of the present invention is different;
- FIG. 13 is a view showing a change in saturation characteristics when different magnetic materials of the second magnetic region according to the second embodiment of the present invention.
- FIG. 14 is a view showing the structure of an inductor according to another embodiment of the present invention.
- 15 is a view showing the structure of an inductor according to another embodiment of the present invention.
- 16 is a flowchart of a method of manufacturing an inductor according to another embodiment of the present invention.
- 17 is a side view showing the configuration of a second magnetic region according to the third embodiment of the present invention.
- FIG. 18 is a side view showing the configuration of a second magnetic region according to the fourth embodiment of the present invention.
- FIG. 19 is a side view of a magnetic iron core for illustrating a configuration of a second magnetic region according to a fifth embodiment of the present invention.
- FIGS. 17 to 19 are graph illustrating inductance characteristics of an inductor using the second magnetic region of FIGS. 17 to 19.
- 21 is a block diagram showing a configuration of an inductor according to an embodiment of the present invention.
- FIG. 22 is a graph for explaining inductance characteristics of the inductor of FIG. 21.
- FIG. 1 and 2 are a perspective view showing the configuration of the inductor according to an embodiment of the present invention and a cross-sectional view combining each configuration.
- an inductor 100 includes magnetic iron cores 110 and 130 and a coil unit 120.
- the magnetic iron cores 110 and 130 have a predetermined shape. Specifically, the magnetic iron cores 110 and 130 may have a closed form so that a magnetic field generated by a current flowing in the coil unit 120 to be described later may be stored in the magnetic iron cores 110 and 130. In other words, the magnetic flux passing through the magnetic cores 110 and 130 may flow along the path of the closed loop of the magnetic cores 110 and 130.
- the magnetic iron cores 110 and 130 refer to a medium existing on a path along which a flux having a direction and magnitude passes along a closed curve path generated by a current flowing in the coil unit 120 to be described later. That is, the magnetic iron cores 110 and 130 store energy of a magnetic field generated by a current flowing in a wire, and accordingly, the magnetic cores 110 and 130 are formed according to permeability, which is a property of magnetic intrinsic to the material forming the magnetic iron cores 110 and 130. The degree (inductance) in which the inductor 100 interrupts the flow of current is determined.
- the magnetic iron cores 110 and 130 include a first magnetic region 110 made of a first magnetic material and a second magnetic region 130 made of a second magnetic material different from the first magnetic material.
- the first magnetic region 110 may be formed on a path through which the magnetic flux generated by the current of the central pillar portion and the coil portion 120 to allow the coil portion 120 to cover a region of the magnetic core. It may be a pair of EE type cores consisting of left and right pillars located.
- the first magnetic region 110 may determine the overall size or shape of the inductor.
- the first magnetic region 110 is illustrated as an EE-type core, but is not limited thereto, and the EI / EF / EER / EFD / ER is not limited thereto.
- Various general purpose cores having voids such as / EPC / UI / CI / EP / RM cores, toroid cores, and pot cores, can be used. It will be apparent to those skilled in the art that other embodiments of the present invention may be implemented on a basis.
- the first magnetic material constituting the first magnetic region 110 is a ferrite core used in a conventional inductor, and is a material obtained by mixing at least one of manganese oxide (MnO) and zinc oxide (ZnO) with alpha iron or iron oxide. Can be.
- the coil unit 120 surrounds a region of the magnetic iron cores 110 and 130 and generates magnetic flux according to the flow of current.
- the coil unit 120 may be a conductive conductor such as a conductive wire made of enameled copper, and may pass a current through both ends.
- the coil unit 120 may be configured to wrap the conductive wire at least once around the frame of the cylinder or the square pillar, and to insert the magnetic iron cores 110 and 130 therein.
- a magnetic field having a polarity is generated according to the direction in which the current and the conductive wire are wound, and the energy of the current is temporarily stored in the form of a magnetic field.
- the generated magnetic flux passes along the body of the magnetic iron core surrounding the coil portion, and the inductance characteristic of the inductor is determined by the properties of the medium (magnetic iron core) through which the magnetic flux passes.
- the second magnetic region 130 of the magnetic iron core is composed of a second magnetic material different from the first magnetic region 110 composed of the first magnetic material.
- the second magnetic region 130 may be formed of a plurality of magnetic components and a nonmagnetic material surrounding the plurality of magnetic components.
- the plurality of magnetic configurations constituting the second magnetic region 130 have a very large degree of magnetization of the material by the magnetic field, that is, a positive number with a magnetic susceptibility ( ⁇ m ) greater than one.
- It can be a high permeability ferromagnetic material having a.
- it may include alloys such as nickel, cobalt, iron and mu-metal.
- the inductance and saturation characteristics of the entire inductor 100 may be adjusted by using the difference between the magnetic saturation characteristics of the first magnetic region and the magnetic saturation characteristics of the second magnetic region.
- the nonmagnetic material constituting the second magnetic region 130 is a material that is hardly affected by the magnetic field, and may be molded in a shape to enclose a plurality of magnetic components of the second magnetic region 130.
- the first magnetic region 110 of the magnetic iron core so that the plurality of magnetic components of the second magnetic region are placed in a fixed position, and selected as a durable and heat resistant material that can withstand heat generation, impact and weight of the inductor.
- the second magnetic region 130 can be fabricated through plastic molding techniques.
- the plurality of magnetic components of the second magnetic region 130 may be arranged in predetermined interval units.
- the plurality of magnetic components of the second magnetic region 130 may be disposed in a plurality of layers in the nonmagnetic material. A detailed description of the magnetic configuration of the second magnetic region will be described later with reference to FIGS. 4 and 5.
- the plurality of magnetic components and the nonmagnetic material of the second magnetic region 130 may have a predetermined volume ratio.
- the plurality of magnetic components of the second magnetic region 130 may be disposed only on the predetermined region of the nonmagnetic material. A detailed description of the mixing ratio and the volume ratio of the magnetic configuration of the second magnetic region 130 will be described later with reference to FIGS. 6 and 7.
- the plurality of magnetic components of the second magnetic region 130 may be at least one of magnetic pieces and magnetic powder.
- Two embodiments of implementing a plurality of magnetic configurations of the second magnetic region 13 in this regard are embodied in the description with reference to the drawings of FIG. 4.
- a first embodiment in which a plurality of magnetic components are formed of magnetic pieces is called a strip type
- the second magnetic region 130 of the magnetic iron core according to the first embodiment in which the strip is inserted into a nonmagnetic material is formed.
- the strip core a form in which strips of the strip core are arranged at regular intervals.
- a second embodiment in which a plurality of magnetic components are formed of powder is referred to as a powder or a powder type
- the second magnetic region of the magnetic iron core according to the second embodiment in which such magnetic powder is mixed with a nonmagnetic material ( 130) is called the powder core.
- the inductor 100 includes a first magnetic region composed of a first magnetic material of a magnetic iron core and a second magnetic region composed of a second magnetic material having different magnetic saturation characteristics.
- the inductance can be continuously varied within the driving range of the designed inductor current, and the structure is simple, so that the parameter value for adjusting the saturation characteristic can be easily implemented.
- FIG. 2 is a cross-sectional view showing the configuration of an inductor according to an embodiment of the present invention.
- a pair of first magnetic regions 110 of the magnetic iron core of FIG. 1 face each other in the long axial direction of the three pillars, and a second magnetic region 130 of the magnetic core is disposed between the center pillars. It is provided.
- a coil unit 120 in which a conductive wire is wound around the pillar region in a center including the first magnetic region 110 and the second magnetic region of the magnetic iron core is positioned.
- the conductors of the coil unit 120 are schematically represented, and in actual implementation, the windings may be wound up to a line physically tolerated by the thinner and longer conductors.
- 3 is an equivalent magnetic circuit of an inductor according to an embodiment of the present invention.
- an inductor 100 may include a magnetic iron core through which a magnetic flux circle 320 and a magnetic flux ⁇ pass in proportion to the number of turns N and the amount of current i of the coil unit 120. It can be represented as an equivalent magnetic circuit including a reluctance R core1 310 of the first magnetic region of the first and a reluctnace R core2 320 of the second magnetic region.
- FIG. 4 is a cross-sectional view of the plane and side surfaces for illustrating the configuration of the second magnetic region according to the first embodiment of the present invention.
- the second magnetic region 400 is disposed in the nonmagnetic material 410 at a predetermined interval unit.
- the second magnetic material of the second magnetic region has a strip-like magnetic composition 420 transverse within the nonmagnetic material 410. And it may be arranged at regular intervals in the vertical direction.
- the second magnetic material of the second magnetic region has a plurality of strip-like magnetic components 420 in the non-magnetic material 410 in parallel with the plane. It can be configured in layers.
- the number of magnetic pieces 420 of the second magnetic region 400 is not limited to the number shown in FIG. 4, and the magnetic pieces 420 may be disposed in a single layer or two or more layers.
- FIG. 5 is a diagram for showing parameters for the configuration of a second magnetic region according to the first embodiment of the present invention.
- a cross-sectional side view of the second magnetic region 500 is a plane in which the magnetic pieces 520 of the second magnetic region 500 form a plurality of layers in the nonmagnetic material 510 and are arranged side by side between the upper and lower layers. Doing an array.
- the parameter for the magnetic piece 520 that can adjust the magnetic saturation characteristics of the second magnetic region 500 is the height h, width w, the distance between the magnetic pieces 520 of the strip array on the plane g 1 is included.
- the adjustment of the saturation characteristics of the second magnetic region 500 according to the first embodiment can easily manufacture an inductor having the saturation characteristics of desired design conditions by adjusting the number, size, and arrangement interval of the magnetic pieces 520. Can be.
- FIG. 6 is a diagram illustrating parameters for the configuration of a second magnetic region according to the first embodiment of the present invention.
- a cross-sectional side view of the second magnetic region 600 shows that the magnetic pieces 620 of the second magnetic region 600 form a plurality of layers in the nonmagnetic material 610, and the strip array between the upper and lower layers. Are spaced apart by g 2 in the horizontal or vertical axis direction of the plane.
- the parameter for the magnetic pieces 620 that can adjust the magnetic saturation characteristics of the second magnetic region 600 is a distance in which magnetic pieces forming a plurality of layers are spaced apart in one or both axes of the plane between the upper and lower layers. g 2 .
- the adjustment of the saturation characteristics of the second magnetic region 500 according to the first embodiment can easily manufacture an inductor having the saturation characteristics of desired design conditions by adjusting the number, size, and arrangement interval of the magnetic pieces 520. Can be.
- FIG. 7 is a cross-sectional view illustrating a configuration of a second magnetic region according to the second exemplary embodiment of the present invention.
- the plurality of magnetic components of the second magnetic region 700 are made of magnetic powder 720 and randomly distributed in the nonmagnetic material 710.
- the second magnetic material of the second magnetic region may be a powder-like magnetic composition 720 mixed with the nonmagnetic material 710 at a predetermined ratio and randomly distributed in the nonmagnetic material 710.
- the parameter for the magnetic powder 720 that can adjust the magnetic saturation characteristics of the second magnetic region 700, the mass occupied by the non-magnetic material 710 versus the magnetic composition 720 in the second magnetic region 700 It may be a ratio, a volume ratio or a mixing ratio.
- the parameter for the magnetic powder 720 may be a relative permeability that increases proportionally as the content of the magnetic powder 720 present in the second magnetic region 700 increases.
- FIG. 8 is a diagram for illustrating another configuration of the second magnetic region according to the second embodiment of the present invention.
- a portion of the second magnetic region is composed of only the nonmagnetic material 830, and a powdery magnetic composition 820 is randomly distributed in the nonmagnetic material 810 in the remaining region.
- the magnetic saturation characteristics of the inductor may be different because the magnetic powder of the second magnetic material, which may affect the path through which the magnetic flux passes, exists only in some regions.
- the parameters for the magnetic powder 820 that can adjust the magnetic saturation characteristics of the second magnetic region 800 include a powder-type magnetic composition and a region composed of only the nonmagnetic material 830 in the second magnetic region 800. 820 includes a ratio v of the area occupied by the mixed second magnetic material.
- the adjustment of the saturation characteristics of the second magnetic region 800 according to the second embodiment is performed by controlling the amount of magnetic powder and the size of the region mixed with the nonmagnetic material, thereby easily inducting the saturation characteristics of the desired design condition. Can be produced.
- FIG. 9 is a diagram illustrating a B-H curve of a second magnetic region having various configurations according to an exemplary embodiment of the present invention.
- the second magnetic region may have a BH curve when the second magnetic region includes only a magnetic material and when the second magnetic region has a plurality of composition ratios including a nonmagnetic material according to an exemplary embodiment of the present invention.
- the slope in the BH curve means permeability, and since a typical inductor having voids has a vacuum permeability ⁇ 0 , the slope always has a constant value.
- the inductor having the second magnetic region according to the present invention has a nonlinear slope according to the change of the magnetic field strength H according to the composition ratio of the second magnetic region, and the magnitude of the slope also has air-gaps. Greater than the slope of the inductor.
- the saturation characteristics can control the nonlinear variable characteristics of the inductance according to the change of the inductor current.
- the first magnetic region of the inductor according to the embodiment of the present invention used in the experiments of FIGS. 10 to 13 is an EE type ferrite core
- the structure of the EE type ferrite core according to the industry standard marking method is A: 70.50, B : 33.20, C: 32.00, D: 48.00, E: 22.00, F: 21.90.
- FIG. 10 is a diagram illustrating a change in saturation characteristics when different parameters of the second magnetic region according to the first exemplary embodiment of the present invention are changed.
- FIG. 10 a graph showing a change in the inductance L of the inductor according to the inductor current iL and the inductance change curves 1010, 1020, 1030, and 1040 of the four inductors are illustrated.
- the horizontal axis represents the amount of current flowing through the coil unit 120 of the inductor 100 expressed in amperes
- the vertical axis represents the inductance value, which is an induction coefficient of the inductor 100 expressed in micro hens.
- the first inductance change curve 1010 relates to a constant inductor having a second magnetic region as a void in the structure of the inductor 100 according to an embodiment of the present invention.
- the second, third and fourth inductance change curves 1020, 1030, and 1040 may include a plurality of magnetic pieces 520 and a plurality of nonmagnetic materials surrounding the plurality of magnetic pieces 520 according to the first embodiment of the present invention.
- An inductor 100 comprising a second magnetic region consisting of 510, wherein the height h, width w of the magnetic piece 520 of the second magnetic area, the width g 1 , the distance between the magnetic pieces arranged on the plane, of two layers
- the magnetic pieces are for three inductors with at least one of these parameters differing by a parameter spacing g 2 spaced in one axial direction of the plane.
- the parameters of the three inductors 100 are summarized as follows.
- the control air-gap inductor has a substantially constant inductance value up to the inductor current range of 20 A, and then shows a saturation characteristic and shows a decrease in inductance of a gentle slope, but one embodiment of the present invention
- the inductor 100 configured according to the example has a larger inductance than the void inductor at a low inductor current, and it can be seen that saturation occurs quickly even at a low current, so that the inductance decreases due to a larger slope than the void inductor.
- the parameters of h, w, g 1 and g 2 are changed, it can be seen that the inductance change characteristics of the inductor 100 having the second magnetic region according to the first embodiment of the present invention are different from each other.
- FIG. 11 is a diagram illustrating a change in saturation characteristics when the composition ratio of the second magnetic region according to the second embodiment of the present invention is changed.
- FIG. 11 a graph showing a change in inductance L of the inductor according to the inductor current i L and an inductance change curve 1110, 1120, and 1130 are shown.
- the horizontal axis represents the amount of current flowing through the coil unit 120 of the inductor 100 expressed in amperes
- the vertical axis represents the inductance value, which is an induction coefficient of the inductor 100 expressed in micro hens.
- the first inductance change curve 1110 shown in the graph of FIG. 11 is an air-gap having a second magnetic region as an air gap in the structure of the inductor 100 according to an embodiment of the present invention.
- the remaining second and third inductance change curves 1120 and 1130 may include a second magnetic material including a magnetic powder 720 and a nonmagnetic material 710 surrounding the magnetic powder 720 according to the second embodiment of the present invention.
- inductance change curves 1120 and 1130 of the inductor 100 having the second magnetic region according to the second embodiment of the present invention are inductance change curves of air-gap inductors. Compared with the low inductor current, it has high inductance and fast saturation. Further, in the inductor 100 having the second magnetic region according to the second embodiment of the present invention, the higher the proportion of the magnetic powder in the second magnetic region is, the larger the inductance and faster saturation characteristics of the inductor 100 at a lower current are. It can be confirmed that has a.
- FIG. 12 is a view showing a change in saturation characteristics when the volume ratio of the second magnetic region according to the second embodiment of the present invention is changed.
- a graph showing a change in inductance L of the inductor according to the inductor current i L and an inductance change curve 1210, 1220, 1230, and 1240 are shown.
- the horizontal axis represents the amount of current flowing through the coil unit 120 of the inductor 100 expressed in amperes
- the vertical axis represents the inductance value, which is an induction coefficient of the inductor 100 expressed in micro hens.
- the first inductance change curve 1210 illustrated in the graph of FIG. 12 is an inductor having an air-gap in which the second magnetic region is empty in the structure of the inductor 100 according to an embodiment of the present invention. It is about.
- the second, third, and fourth inductance change curves 1220, 1230, and 1240 are magnetic powders 820 and nonmagnetic materials 810 surrounding the magnetic powders 820 according to the second embodiment of the present invention.
- An inductor 100 including a configured second magnetic region, wherein when the magnetic powder 820 is entirely occupied by the second magnetic material mixed with the nonmagnetic material 810 in the total volume of the second magnetic region 800, The second case where a region composed solely of the magnetic material occupies some region and the second magnetic material occupies 2/3 the volume, and the second case where the region composed only of nonmagnetic material occupies some region and the second magnetic substance occupies one third volume
- the inductor 100 is formed of a magnetic region 130.
- the higher the volume ratio of the second magnetic material in the second magnetic region the higher the inductance at a lower current. It can confirm that it has a faster saturation characteristic.
- FIG. 13 a graph showing a change in inductance L of the inductor 100 according to the inductor current iL and an inductance change curve 1310, 1320, 1330, and 1340 are illustrated.
- the amount of current flowing through the coil unit 120 of the inductor 100 in amperes is represented, and the vertical axis represents an inductance value, which is an induction coefficient of the inductor 100 in units of microhenry.
- the heights of the second magnetic regions in the structure of the inductor 100 according to the embodiment of the present invention are respectively.
- the third and fourth inductance change curves 1330 and 1340 may be formed of a rare earth metal material of the magnetic material of the magnetic powder 820 according to the second embodiment of the present invention, and may be formed of a nonmagnetic material that surrounds the magnetic powder 820.
- the inductor 100 having the second magnetic region composed of the rare earth metal powder according to the second embodiment of the present invention is different from the inductance change characteristic of the second magnetic region composed of the conventional ferromagnetic metal powder. It can be seen that the current has a high inductance in the region where the current is high, and the higher the height of the second magnetic region 130 is, the later the saturation characteristic is.
- the saturation characteristics of the inductor of the inductor 100 having the second magnetic region according to the first embodiment of the present invention or the second magnetic region according to the second embodiment are determined by several parameters, composition ratios, and second characteristics.
- FIG. 14 is a view showing the structure of an inductor according to another embodiment of the present invention.
- an inductor 100 ′ includes an O-type or toroid-type magnetic iron core 1410 and 1430 and a coil unit 1420.
- the magnetic iron core can be constructed by using a commercial type O-shaped core made of the first magnetic material as the first magnetic region and inserting a second magnetic region made of the second magnetic material into a part of the first magnetic region.
- the coil unit may be formed of a conductive wire surrounding one region of the magnetic iron core, and is not limited to the coil unit illustrated in FIG. 14, and may wind more windings over a wider region of the magnetic iron core.
- the second magnetic region of the magnetic core is exposed to the outside, thereby easily inserting and replacing the second magnetic region satisfying the desired inductance saturation characteristics.
- a separate circuit is provided around the inductor 100 ′ to control the movement of the second magnetic region in the cavity of the first magnetic region, thereby allowing the magnetic flux passing through the magnetic core to pass through.
- the magnetic saturation characteristics of the inductor can be changed by changing the volume ratio in which two magnetic regions exist.
- 15 is a view showing the structure of an inductor according to another embodiment of the present invention.
- an inductor 100 ′′ includes cylindrical magnetic iron cores 1510 and 1530 and a coil unit 1520.
- a cylindrical commercial core may be provided as a first magnetic region inside a coil unit 1530 wound around a long cylinder, and a second magnetic region formed of a second magnetic material may be provided in the middle thereof.
- the inductor 100 ′′ can easily change the inductance saturation characteristics only by having a second magnetic region composed of a heterogeneous magnetic material in only a part of a commercial core, thereby increasing the inductance. Variable characteristics can be obtained with respect to the current.
- 16 is a flowchart of a method of manufacturing an inductor according to an embodiment of the present invention.
- a magnetic iron core manufacturing step (S1610), a void forming step (S1620), a magnetic material filling step (S1630), and a coil winding step (S1640) ).
- Magnetic iron core manufacturing step (S1610) is provided with a magnetic iron core having a predetermined form.
- the magnetic iron core may be a commercial inductor component such as an EE ferrite core
- the predetermined form may be a shape formed along a closed curve of magnetic flux generated by conduction of current to a coil to be described later.
- the inductance may be determined according to the magnetic permeability of the magnetic core.
- a pore is formed in one region of the magnetic iron core.
- an air gap may be formed in the magnetic core of the closed path shape in which an empty space exists on a path through which magnetic flux passes.
- the gap is filled with a magnetic material different from the magnetic material constituting the magnetic core.
- the first magnetic material constituting the magnetic iron core may be a material in which ferrite core alpha iron or Mn and Zn are mixed.
- the second magnetic material different from the first magnetic material may be a material having a magnetic permeability different from that of the first magnetic material.
- the magnetic material filling the voids may be composed of a plurality of magnetic compositions and nonmagnetic materials surrounding the plurality of magnetic compositions. Specifically, a plurality of magnetic compositions have a high permeability magnetic material having a large degree of magnetization of the material by the magnetic field, that is, a magnetic susceptibility ( ⁇ m ) greater than 1.
- the nonmagnetic material is a material that is hardly affected by the magnetic field, and can be molded into a shape enclosing a plurality of magnetic components, and can be selected as a durable and heat resistant material.
- Plastics, such as polypropylene, are readily made of nonmagnetic materials, and other magnetic materials can be produced through plastic molding techniques.
- the plurality of magnetic components of different magnetic materials may be arranged at predetermined interval units.
- a plurality of magnetic configurations of other magnetic materials may be arranged in a plurality of layers in the nonmagnetic material.
- the plurality of magnetic compositions and nonmagnetic materials of other magnetic materials may have a predetermined volume ratio.
- a plurality of magnetic configurations of other magnetic materials may be disposed only on predetermined regions of the nonmagnetic material.
- the plurality of magnetic components of the other magnetic material may be at least one of magnetic pieces and magnetic powder.
- the coil In the winding of the coil (S1640), the coil is wound around one region of the magnetic iron core in which the pores of the magnetic iron core are filled with the magnetic material of the magnetic core and other magnetic materials.
- the coil may be a conductive conductor, such as a conductive wire made of enameled copper, and may pass a current through both ends. Then, magnetic flux may be generated according to the current flowing along the coil.
- the inductor manufacturing method of the present invention as described above can be realized by the inductor manufacturing apparatus.
- the inductor manufacturing apparatus may be a machine for controlling to perform each step of the inductor manufacturing method.
- the magnetic iron core can be manufactured through a process such as heating, compressing, or molding ferrite (first magnetic material), which is a material of the magnetic iron core, into a predetermined form, from a powder form.
- first magnetic material which is a material of the magnetic iron core
- it may be a method of supplying a commercially manufactured commercial core to the inductor manufacturing apparatus by omitting the step (S1610) of direct manufacturing.
- the manufacturing tool of the magnetic iron core may be designed in a predetermined form for providing a gap.
- a separate second magnetic core generation line can be designed to configure the second magnetic region in the void.
- the second magnetic core may be manufactured in a form that can be inserted into the pores of the magnetic iron core through chemical and physical processes such as mixing, firing, and processing the second magnetic material as a material.
- the coil part may be manufactured by winding a conductive wire over part or all of the magnetic iron core.
- the coil unit may be manufactured by winding a conductive wire on a coil drum surrounding the outer edge
- 17 is a side view illustrating a configuration of a second magnetic region according to the third exemplary embodiment of the present invention.
- the second magnetic region 1700 is composed of a plurality of zones (blocks) 1710, 1720, and 1730. Specifically, the second magnetic region 1700 may be composed of a plurality of zones having different permeability.
- the block (zone) having a specific permeability may be a strip or powder core as described above.
- different permeability for each block may be a permeability designed according to the above parameters.
- each block constituting the second magnetic region may differ in the number of strips inserted or the amount of powder contained.
- three blocks 1710, 1720, and 1730 are illustrated in FIG. 17, two blocks 1710, 1720, and 1730 may be formed.
- the blocks 1710, 1720, and 1730 have different sizes in FIG. 17, they may be the same size.
- the second magnetic region 1700 may have a shape in which the plurality of zones 1710, 1720, and 1730 are disposed in a direction in which the magnetic flux 1740 is parallel to the direction in which the second magnetic region 1700 passes.
- the plurality of blocks 1710, 1720, and 1730 constituting the second magnetic region 1700 may be disposed to face each other in the direction of the magnetic flux 1740.
- the plurality of blocks 1710, 1720, and 1730 may be inserted into the pores of the first magnetic region in a lump stacked up to be in contact with each other.
- the plurality of blocks 1710, 1720, and 1730 may be inserted into each of the plurality of gaps provided in the first magnetic region.
- the magnetic force of the magnetic field formed by the coil unit is also stored in the blocks 1710, 1720, 1730. And blocks with different permeability have different saturation characteristics. As the current in the coil portion increases, the small block 1710 saturates first. Inductance characteristics of the inductor are represented by the remaining blocks 1720 and 1730 that are not yet saturated.
- FIG. 18 is a side view illustrating a configuration of a second magnetic region according to the fourth exemplary embodiment of the present invention.
- the second magnetic region 1800 is composed of a plurality of zones (blocks) 1810, 1820, and 1830.
- the second magnetic region 1800 may include a plurality of blocks 1810, 1820, and 1830 having different permeability.
- the second magnetic region 1800 may have a form in which the plurality of zones 1810, 1820, and 1830 are arranged in a direction perpendicular to a direction in which the magnetic flux 1840 passes through the second magnetic region 1800.
- the plurality of blocks 1810, 1820, and 1830 constituting the second magnetic region 1800 may have a shape in which the blocks 1810, 1820, and 1830 are arranged side by side in a direction perpendicular to the direction of the magnetic flux 1840.
- the direction in which the plurality of blocks 1810, 1820, and 1830 are disposed is generally perpendicular to the direction of the magnetic flux 1840.
- the plurality of blocks 1810, 1820, and 1830 may be inserted into the pores of the first magnetic region in a lump connected to abut.
- the plurality of blocks 1810, 1820, and 1830 may be inserted into each of the plurality of gaps provided in the first magnetic region.
- the inductance change characteristic may be more pronounced.
- FIG. 19 is a side view of a magnetic iron core for illustrating a configuration of a second magnetic region according to the fifth embodiment of the present invention.
- the magnetic iron core 1900 includes a first magnetic region 1940 and a second magnetic region 1910.
- the second magnetic region 1910 includes a plurality of zones 1920, 1930, 1940 with different permeability.
- the first magnetic region 1940 forms a gap in a plurality of positions.
- the voids are provided in the horizontal direction in the first magnetic region 1940 of the magnetic iron core 1900, but the present invention is not limited thereto, and it is sufficient if two or more voids are formed anywhere in the closed loop path of the magnetic flux.
- the plurality of zones 1920, 1930 and 1940 of the second magnetic region 1910 may be located in the plurality of voids.
- One gap may have one or a plurality of blocks.
- inductor characteristics can be designed by inserting a combination of one or several blocks into a gap of the ferrite core after forming a plurality of core blocks.
- FIGS. 17 to 19 are graphs for explaining inductance characteristics of an inductor using the second magnetic region of FIGS. 17 to 19.
- the inductance of the air gap inductor 2020 where only voids exist in the magnetic core of the same design is almost constant in the low current range, and the inductance gradually decreases around 25 amperes (A) and eventually saturates. Seems to be a common characteristic.
- the inductance of the variable inductor 2010 having the second magnetic region composed of a plurality of zones (blocks) having different permeability, corresponding to the number of blocks, is a step with little change of each different inductance in three current bands. Mold characteristics. This is because a plurality of blocks having different permeability each store a magnetic force, and as the inductor current gradually increases, the inductance change characteristic of the saturated block first disappears, and a stepped graph in which the inductance decreases rapidly appears.
- 21 is a block diagram illustrating a configuration of an inductor according to an embodiment of the present invention.
- an inductor includes a magnetic iron core 2100 including a first magnetic region 2110 and a second magnetic region 2120, a coil unit 2130, a transfer device 2140, and a controller 2150. do.
- the second magnetic region 2120 is composed of a plurality of zones 2121 and 2122 having different permeability.
- the plurality of zones 2121 and 2122 may move in a magnetic iron core 2100 to deviate from the volume (the size of the gap) from the first magnetic region 2110 to the second magnetic region 2120.
- some of the plurality of blocks 2121 and 2122 of the second magnetic region 2120 may be positioned in the gap portion provided in the first magnetic region 2110.
- the second magnetic region has a configuration in which a plurality of zones 2121 and 2122 are disposed along the moving direction.
- the transfer device 2140 moves the second magnetic region 2120.
- the transfer device 2140 may move a portion of the second magnetic region 2120 located in the volume (space) that extends from the first magnetic region 2110.
- the transfer device 2140 may include a power generation device using electric energy such as an electric motor (motor), and the second magnetic region 2120 may move by the rotational movement of the electric motor.
- a power generation device using electric energy such as an electric motor (motor)
- the second magnetic region 2120 may move by the rotational movement of the electric motor.
- the controller 2150 may detect the inductor current i L.
- the controller 2150 may detect the magnitude of the current i L flowing in the coil unit 2130.
- the controller 2150 may include a digital ammeter for sensing the magnitude of the current i L.
- the controller 2150 controls the transfer device 2140.
- the controller 2150 may control the transfer device 2140 to move the second magnetic region 2120.
- the controller 2150 may include a driver that generates a control signal for controlling the electric motor of the transfer device 2140.
- the inductor can be used in the circuit for power conversion.
- the controller 2150 may measure the load amount from the inductor current i L.
- the controller 2150 may include an inductance of an inductor corresponding to an input voltage i in corresponding to an initial condition, an input current v in , and a position at which the transfer device 2140 moves the second magnetic region 2120. (L) based on the current i L of the inductor, it may be determined whether the load is less than or equal to a predetermined threshold.
- the controller 2150 may measure the load amount by directly measuring the voltage and current applied to the load.
- the controller 2150 may include a voltmeter and an ammeter for the circuit on the secondary side to which the load is connected. Alternatively, the controller 2150 may detect the power input from the power source and calculate the load by measuring the voltage or current applied to the load. In addition to the above-described method, various load detection methods conventionally used in various power converters may be applied to the controller 2150.
- the controller 2150 controls the transfer device 2140 according to the load amount of the load. Specifically, the controller 2150 may control the transfer device 2140 such that the permeability zone 2121 or 2122 occupies the volume according to the load amount.
- the controller 2150 may be implemented in a number of different ways.
- the controller 2150 may include a processor, an application specific integrated circuit (ASIC), an embedded processor, a microprocessor, hardware control logic, a hardware finite state machine (FSM), a digital signal processor (ASC). digital signal processor, DSP).
- ASIC application specific integrated circuit
- FSM hardware finite state machine
- ASC digital signal processor
- DSP digital signal processor
- FIG. 22 is a graph for explaining inductance characteristics of the inductor of FIG. 21.
- FIG. 22 a graph showing a change in inductance 2240 of a common air gap inductor, an inductance 2210 of a light load inductor, an inductance 2220 of a medium load inductor, and an inductance 2230 of a heavy load inductor with respect to an inductor current. Shows together.
- the inductor capable of moving the second magnetic region to be located in the air gap by the transfer device according to the load has a higher inductance characteristic than a general inductor having a gap, and also varies depending on the size of the load. It may have an inductance characteristic.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
Strip array (mm) | |||
type 1 | type 2 | type 3 | |
h | 0.6 | 0.6 | 1.4 |
w | 4 | 4 | 1 |
g1 | 1.2 | 0.6 | 1 |
g2 | 0 | 2.3 | 0 |
Powder core | ||
type 1 | type 2 | |
초기값 μr | 3 | 5 |
Claims (15)
- 인덕터에 있어서,기설정된 형태를 갖는 자기 철심; 및상기 자기 철심의 일 영역을 감싸며, 전류의 흐름에 따라 자속을 발생시키는 코일부;를 포함하고,상기 자기 철심은,제1 자성물질로 구성되는 제1 자성 영역과 상기 제1 자성물질과 다른 제2 자성물질로 구성되는 제2 자성 영역으로 구성되는 인덕터.
- 제1항에 있어서,상기 제2 자성 영역은,복수의 자성 구성 및 상기 복수의 자성 구성을 감싸는 비자성물질로 구성되는 것을 특징으로 하는 인덕터.
- 제2항에 있어서,상기 복수의 자성 구성은 기설정된 간격 단위로 배치되는 것을 특징으로 하는 인덕터.
- 제2항에 있어서,상기 복수의 자성 구성은 상기 비자성 물질 내에 복수의 층으로 배치되는 것을 특징으로 하는 인덕터.
- 제2항에 있어서,상기 복수의 자성 구성 및 상기 비자성 물질은 기설정된 부피 비율을 갖는 것을 특징으로 하는 인덕터.
- 제2항에 있어서,상기 복수의 자성 구성은 상기 비자성 물질의 기설정된 영역 상에만 배치되는 것을 특징으로 하는 인덕터.
- 제2항에 있어서,상기 복수의 자성 구성은 자성 조각 및 자성 파우더 중 적어도 하나인 것을 특징으로 하는 인덕터.
- 제1항에 있어서,상기 제2 자성 영역은,상이한 투자율을 갖는 복수의 구역으로 구성되는 것을 특징으로 하는 인덕터.
- 제8항에 있어서,상기 제2 자성 영역은,상기 자속이 상기 제2 자성 영역을 통과하는 방향과 나란한 방향으로 상기 복수의 구역이 배치된 형태를 가지는 것을 특징으로 하는 인덕터.
- 제8항에 있어서,상기 제2 자성 영역은,상기 자속이 상기 제2 자성 영역을 통과하는 방향과 수직한 방향으로 상기 복수의 구역이 배치된 형태를 가지는 것을 특징으로 하는 인덕터.
- 제10항에 있어서,상기 복수의 구역은 서로 연접한 하나의 공간에 배치되거나, 서로 분리된 복수의 공간에 각각 배치되는 것을 특징으로 하는 인덕터.
- 제10항에 있어서,상기 복수의 구역은,상기 자기 철심 내에서 상기 제1 자성 영역에서 상기 제2 자성 영역으로 이어지는 용적으로부터 어긋나도록 이동할 수 있는 것을 특징으로 하는 인덕터.
- 제12항에 있어서,상기 제2 자성 영역은,상기 복수의 구역 중 일부분만 상기 용적을 차지하도록 구성되는 것을 특징으로 하는 인덕터.
- 제12항에 있어서,상기 복수의 구역을 이동시키는 이송 장치; 및전력 변환 회로의 2차측에 연결된 부하량에 따라 상기 복수의 구역을 이동시키도록 상기 이송 장치를 제어하는 제어부;를 더 포함하는 것을 특징으로 하는 인덕터.
- 인덕터 제조 방법에 있어서,기설정된 형태를 갖는 자기 철심을 구비하는 단계;상기 구비된 자기 철심의 일 영역에 공극을 형성하는 단계;상기 형성된 공극에 상기 자기 철심의 자성 물질과 다른 자성 물질로 채우는 단계; 및상기 다른 자성 물질이 채워진 자기 철심의 일 영역에 코일은 감는 단계;를 포함하는 인덕터 제조 방법.
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US15/322,974 US10037845B2 (en) | 2014-07-01 | 2015-07-01 | Variable inductor and method for manufacturing the same |
CN201580036146.4A CN106663521B (zh) | 2014-07-01 | 2015-07-01 | 可变电感器及其制造方法 |
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KR1020140081734A KR101573729B1 (ko) | 2014-07-01 | 2014-07-01 | 가변 인덕터 및 그 제조 방법 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3389173A1 (en) * | 2017-04-14 | 2018-10-17 | Delta Electronics, Inc. | Converter |
WO2020036376A1 (ko) * | 2018-08-14 | 2020-02-20 | 삼성전자주식회사 | 인덕터 |
KR102176838B1 (ko) * | 2019-10-14 | 2020-11-10 | 한국해양대학교 산학협력단 | 자속밀도 제어 기능을 가진 광대역 유도형 결합기 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017204663A1 (en) * | 2016-05-25 | 2017-11-30 | Powerbyproxi Limited | A coil arrangement |
EP3503131B1 (en) * | 2017-12-19 | 2023-08-30 | Vestel Elektronik Sanayi ve Ticaret A.S. | Inductor and method for varying the magnetic permeability of an inductor |
CN108418406B (zh) * | 2018-03-13 | 2019-08-13 | 上海东软医疗科技有限公司 | 一种梯度放大器及核磁共振成像设备 |
JP6983382B2 (ja) * | 2018-10-12 | 2021-12-17 | 株式会社村田製作所 | 積層コイル部品 |
KR20210091460A (ko) | 2020-01-14 | 2021-07-22 | 엘지전자 주식회사 | 인덕터 |
CN117706438A (zh) * | 2023-08-01 | 2024-03-15 | 珅斯电子(上海)有限公司 | 可变磁电感器、磁场强度测量方法和电流检测方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05121239A (ja) * | 1991-10-28 | 1993-05-18 | Matsushita Electric Ind Co Ltd | インダクタンス部品およびその製造法 |
JPH07220933A (ja) * | 1994-02-07 | 1995-08-18 | Tdk Corp | インダクタンス素子並びにインダクタンス素子の製造方法及び該インダクタンス素子に用いるコアケース |
JP2009158534A (ja) * | 2007-12-25 | 2009-07-16 | Sumitomo Electric Ind Ltd | リアクトル用コア |
JP2011199227A (ja) * | 2010-03-24 | 2011-10-06 | Toyota Motor Corp | リアクトルおよび電力変換装置 |
KR101223607B1 (ko) * | 2011-10-31 | 2013-01-21 | 경북대학교 산학협력단 | 가변 인덕터 및 그 인덕터의 구동 방법 |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4311390Y1 (ko) | 1965-04-09 | 1968-05-17 | ||
US3518595A (en) * | 1968-10-21 | 1970-06-30 | Wyle Laboratories | Variable inductor |
JPS5796512A (en) | 1980-12-08 | 1982-06-15 | Hitachi Metals Ltd | Inductor |
JPS57188302U (ko) | 1981-05-22 | 1982-11-30 | ||
JPS594618U (ja) | 1982-07-02 | 1984-01-12 | 富士通株式会社 | 磁性流体を用いたコイルのインダクタンス可変機構 |
DE3305708A1 (de) * | 1983-02-18 | 1984-08-23 | Transformatoren Union Ag, 7000 Stuttgart | Drehstromdrosselspule mit fuenfschenkelkern |
JPS63228605A (ja) | 1987-03-18 | 1988-09-22 | Hitachi Ltd | インダクタンス素子 |
JPH01125809A (ja) | 1987-11-10 | 1989-05-18 | Tokin Corp | 可変インダクタ用磁心 |
JPH11144983A (ja) | 1997-11-07 | 1999-05-28 | Matsushita Electric Ind Co Ltd | チョークコイル及びこれを用いた整流平滑回路 |
US6856231B2 (en) | 2000-09-08 | 2005-02-15 | Nec Tokin Corporaton | Magnetically biasing bond magnet for improving DC superposition characteristics of magnetic coil |
TW535175B (en) * | 2000-10-16 | 2003-06-01 | Primarion Inc | System and method for orthogonal inductance variation |
JP2002222714A (ja) | 2001-01-26 | 2002-08-09 | Nec Tokin Corp | インダクタ |
JP2003068535A (ja) | 2001-08-29 | 2003-03-07 | Nec Tokin Corp | インダクタンス部品 |
JP2003109832A (ja) | 2001-09-28 | 2003-04-11 | Nec Tokin Corp | 磁気コア及びそれを用いたインダクタンス部品 |
US7242275B2 (en) * | 2003-02-05 | 2007-07-10 | Paper Quality Management Associates | Variable inductor |
JP2005303019A (ja) | 2004-04-13 | 2005-10-27 | Nec Tokin Corp | 直流磁気バイアス用磁石を有する磁芯およびそれを用いたインダクタンス部品 |
JP2007012647A (ja) | 2005-06-28 | 2007-01-18 | Hitachi Metals Ltd | 複合磁心およびこれを用いたリアクトル |
JP2008109080A (ja) * | 2006-09-29 | 2008-05-08 | Alps Electric Co Ltd | 圧粉磁心及びその製造方法 |
EP2001029B1 (en) * | 2007-06-08 | 2010-08-11 | ABB Oy | DC inductor |
JP2010278273A (ja) | 2009-05-29 | 2010-12-09 | Hitachi Engineering & Services Co Ltd | 可変電圧型変圧器 |
US9019062B2 (en) | 2010-12-08 | 2015-04-28 | Epcos Ag | Inductive device with improved core properties |
US8749332B1 (en) * | 2011-03-03 | 2014-06-10 | Power-One, Inc. | Multi-phase resonant converter with trimmable inductor and phase current balancing method |
JP5857524B2 (ja) * | 2011-08-18 | 2016-02-10 | Fdk株式会社 | チョークコイル |
-
2014
- 2014-07-01 KR KR1020140081734A patent/KR101573729B1/ko active IP Right Grant
-
2015
- 2015-07-01 US US15/322,974 patent/US10037845B2/en active Active
- 2015-07-01 JP JP2016576030A patent/JP2017525147A/ja active Pending
- 2015-07-01 WO PCT/KR2015/006760 patent/WO2016003190A1/ko active Application Filing
- 2015-07-01 CN CN201580036146.4A patent/CN106663521B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05121239A (ja) * | 1991-10-28 | 1993-05-18 | Matsushita Electric Ind Co Ltd | インダクタンス部品およびその製造法 |
JPH07220933A (ja) * | 1994-02-07 | 1995-08-18 | Tdk Corp | インダクタンス素子並びにインダクタンス素子の製造方法及び該インダクタンス素子に用いるコアケース |
JP2009158534A (ja) * | 2007-12-25 | 2009-07-16 | Sumitomo Electric Ind Ltd | リアクトル用コア |
JP2011199227A (ja) * | 2010-03-24 | 2011-10-06 | Toyota Motor Corp | リアクトルおよび電力変換装置 |
KR101223607B1 (ko) * | 2011-10-31 | 2013-01-21 | 경북대학교 산학협력단 | 가변 인덕터 및 그 인덕터의 구동 방법 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3389173A1 (en) * | 2017-04-14 | 2018-10-17 | Delta Electronics, Inc. | Converter |
CN108736726A (zh) * | 2017-04-14 | 2018-11-02 | 台达电子工业股份有限公司 | 转换器 |
US10236780B2 (en) | 2017-04-14 | 2019-03-19 | Delta Electronics, Inc. | Converter |
CN108736726B (zh) * | 2017-04-14 | 2021-03-19 | 台达电子工业股份有限公司 | 转换器 |
WO2020036376A1 (ko) * | 2018-08-14 | 2020-02-20 | 삼성전자주식회사 | 인덕터 |
KR20200019449A (ko) * | 2018-08-14 | 2020-02-24 | 삼성전자주식회사 | 인덕터 |
KR102520719B1 (ko) | 2018-08-14 | 2023-04-12 | 삼성전자주식회사 | 인덕터 |
US12112874B2 (en) | 2018-08-14 | 2024-10-08 | Samsung Electronics Co., Ltd. | Inductor |
KR102176838B1 (ko) * | 2019-10-14 | 2020-11-10 | 한국해양대학교 산학협력단 | 자속밀도 제어 기능을 가진 광대역 유도형 결합기 |
Also Published As
Publication number | Publication date |
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KR101573729B1 (ko) | 2015-12-02 |
JP2017525147A (ja) | 2017-08-31 |
CN106663521A (zh) | 2017-05-10 |
US20170140868A1 (en) | 2017-05-18 |
CN106663521B (zh) | 2019-03-08 |
US10037845B2 (en) | 2018-07-31 |
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