WO2011007879A1 - リアクトル - Google Patents
リアクトル Download PDFInfo
- Publication number
- WO2011007879A1 WO2011007879A1 PCT/JP2010/062114 JP2010062114W WO2011007879A1 WO 2011007879 A1 WO2011007879 A1 WO 2011007879A1 JP 2010062114 W JP2010062114 W JP 2010062114W WO 2011007879 A1 WO2011007879 A1 WO 2011007879A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- air
- coil
- reactor
- core coil
- Prior art date
Links
Images
Classifications
-
- 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
- H01F27/24—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
-
- 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
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
Definitions
- the present invention relates to a reactor that is suitably used in, for example, an electric circuit or an electronic circuit.
- Reactors which are passive elements using windings, are used in various electric circuits such as prevention of harmonic currents in power factor correction circuits, smoothing of current pulsations in current type inverter and chopper control, and boosting of DC voltage in converters. And used in electronic circuits.
- Patent Documents 1 to 4 are technical documents related to this type of reactor.
- Patent Document 1 includes a coil, a core made of a magnetic powder mixed resin filled inside and around the coil, and a case that accommodates the coil and the core, and projects from the inner wall surface of the case. A reactor in which a portion is formed is disclosed.
- Patent Literature 2 a pair of soft magnetic alloy powder cores in a rod shape that is incorporated in a hollow hole of a bobbin around which a coil is wound to serve as a coil mounting winding shaft, and the pair of soft magnetic alloy powder powder cores. And a pair of plate-like soft ferrite cores that form a quadrilateral composite core together with the pair of soft magnetic alloy dust cores.
- the reactor disclosed in Patent Document 2 is aimed at miniaturization and low loss, and there is a gap in the facing portion between the soft magnetic alloy dust core and the soft ferrite core so that the inductance is about 2 mH at 0A. Is provided.
- Patent Document 3 and Patent Document 4 propose a reactor using an air-core type coil.
- Patent Document 3 discloses an air-core reactor in which each coil turn is configured by overlapping a plurality of strip-shaped unit conductors. In this reactor, the thickness of the coil turn reactor in the radial direction is smaller than the width in the axial direction.
- Patent Document 4 a plurality of disk windings wound around an insulating cylinder in a state surrounded by a magnetic shield iron core are stacked in multiple stages in the winding axis direction, and each disk winding is Reactors that are connected to each other are disclosed.
- Japanese Unexamined Patent Publication No. 2008-42094 Japanese Unexamined Patent Publication No. 2007-128951 Japanese Unexamined Patent Publication No. 50-27949 Japanese Unexamined Patent Publication No. 51-42956
- Patent Document 3 and Patent Document 4 are not complicated in structure as in Patent Document 2, and stable inductance characteristics can be obtained in a relatively wide current range.
- the present invention has been made to solve the above-described problems, and provides a reactor capable of stably obtaining a large inductance in a wide current range while suppressing noise, processing cost, and eddy current loss. Objective.
- the reactor according to one aspect of the present invention includes an air core coil formed by winding a long conductor member, and a core portion that covers both ends and the outer periphery of the air core coil,
- the ratio t / W of the length t of the long conductor member in the radial direction of the air-core coil to the length W of the long conductor member in the axial direction of the air-core coil is 1 or less,
- One surface of the core portion facing one end portion of the air-core coil and the other surface of the core portion facing the other end portion of the air-core coil are parallel at least in a region covering the coil end portion.
- the circumferential surface of the long conductor member forming the air core coil is perpendicular to the one surface of the core portion, and the long conductor member in the axial direction of the air core coil From the center of the air-core coil to the outer circumference with respect to the length W of
- the ratio R / W of the radius R of is characterized by 2-4. According to the reactor having such a configuration, a large inductance can be stably generated in a wide current range while suppressing noise, processing cost, and eddy current loss.
- protrusions projecting to the air-core coil are formed on portions of the top surface and the bottom surface of the core portion facing the air-core portion of the air-core coil.
- the protrusion has a radius of the air core part of the air core coil as r, a height from the core surface facing the coil end of the protrusion as a, and a radius of the bottom of the protrusion as A. 0 ⁇ a ⁇ W / 3 and r> ⁇ (A 2 + (W / 2) 2 ) It is formed so that it may satisfy. According to this configuration, the inductance of the reactor can be further improved.
- the ratio t / W is 1/10 or less.
- the length t is less than or equal to the skin thickness with respect to the driving frequency of the reactor.
- an interval L1 between the one surface of the core portion and the other surface of the core portion at the inner peripheral end of the air core coil, and an outer peripheral end of the air core coil Absolute value of parallelism ((L1-L2) / L3) calculated by dividing the difference (L1-L2) between the distance L2 between the one surface of the core part and the other surface of the core part by the average distance L3 Is 1/50 or less.
- the magnetic flux lines passing through the air core coil can be made parallel to the axial direction, and the direction of the magnetic flux lines passing through the air core coil and the cross section of the conductor member can be made substantially parallel. Can do. Therefore, it can be prevented or suppressed that the magnetic flux lines passing through the inside of the air-core coil are not parallel to the axial direction, thereby increasing the eddy current loss and reducing the inductance.
- the long conductor member is formed by laminating a conductor layer and an insulating layer in the thickness direction, and the adjacent conductor layers are The outside of the core portion is joined without sandwiching an insulating layer at an end portion in the longitudinal direction of the long conductor member. According to this configuration, the cross-sectional area of the conductor in the direction in which the current flows can be secured, and an increase in the electric resistance of the air-core coil can be suppressed.
- each conductor layer itself, or lead wires led out separately from each conductor layer are in opposite phases to the inductor core provided outside the core portion. It is characterized by being joined after being routed. According to this configuration, eddy current can be effectively suppressed.
- the air-core coil is formed by using a single-layer coil formed by winding the long conductor member that is insulation-coated with an insulating material.
- the three windings of the single-layer coils are stacked on each other, and the winding start of each of the three single-layer coils is independent from each other as the first terminal of the current line, and the three single-layer coils Each winding end of the coil is independent of each other as the second terminal of the current line.
- the said core part is provided with the several core member
- a fastening member that fastens the plurality of core members to form the core portion, and the first placement position of the fixing member and the second placement position of the fastening member in the core portion are: It is different from each other. According to this configuration, since the arrangement position of the fixing member and the arrangement position of the fastening member are individually provided, the core portion thus configured is fixed to the fixing member after the plurality of core members are fastened by the fastening member. Can be fixed to the mounting member. For this reason, productivity of assembly and attachment of the reactor can be improved.
- the core portion is magnetically isotropic and is formed by molding a soft magnetic powder.
- the core part is a ferrite core having magnetic isotropy. According to these configurations, desired magnetic characteristics can be obtained relatively easily with respect to the core portion, and can be formed into a desired shape relatively easily.
- the present invention it is possible to realize a reactor in which a large inductance is stably generated in a wide current range while suppressing noise, processing cost, and eddy current loss.
- FIG. 1 It is a figure showing a 1st embodiment of a reactor concerning the present invention. It is a perspective view which shows the other form of the core member in the reactor which concerns on 1st Embodiment. It is a figure which shows the magnetic flux density-specific permeability characteristic according to density in the magnetic body containing iron powder.
- (A), (b), (c), (d) is a figure for demonstrating the manufacturing process of the reactor which concerns on 1st Embodiment.
- FIG. 1 It is a figure which shows the relationship between the structure of a reactor, and a magnetic flux line
- (a) is a block diagram of the reactor (comparative example 1) which the air core coil exposed outside
- (b) is the reactor of this embodiment Configuration diagram
- (c) is a configuration diagram of a reactor (Comparative Example 2) in which an air core coil is covered with a core portion and a magnetic body is provided in the air core portion
- (d) is a magnetic flux of the reactor according to Comparative Example 1.
- E) is a magnetic flux diagram of the reactor according to this embodiment
- (f) is a magnetic flux diagram of the reactor according to Comparative Example 2.
- a graph (graph K) representing the change in the stability I with respect to the change in the ratio R / W and the maximum with respect to the change in the ratio R / W
- graph K shows the graph showing the change of the inductance Lmax, the minimum inductance Lmin, and the average inductance Lav.
- It is the schematic of the projection part formed in an axial center side.
- a magnetic force diagram in case the protrusion part h exists in the axial center side.
- a magnetic force diagram in case the protrusion part h exists in the axial center side.
- FIG. (A), (b) is a figure which shows the deformation
- FIG. 38 is a diagram showing a result of dielectric strength voltage (2.0 kV) for each material and thickness ( ⁇ m) of an insulating member in the reactor having the configuration shown in FIG. It is a figure which shows the other deformation
- A), (B) is a figure which shows the structure of the reactor of the 1st aspect further provided with the heat sink.
- FIG. 43 is a diagram showing a configuration of a reactor according to a comparative example with respect to the modes shown in FIGS. It is a figure which shows the structure of the reactor further provided with the fixing member and the fastening member, (A) is a top view, (B) is sectional drawing in the A1 cut line of (A).
- FIG. 1 It is a figure which shows the structure of the reactor further provided with the fixing member and the fastening member, (A) is a top view, (B) is sectional drawing in the A2 cutting line of (A). It is a figure which shows the aspect of this conductor in the case of installing a cylindrical or solid columnar conductor in an air core part.
- (A) is an external perspective view of a ribbon-like conductor member constituting an air-core coil
- (b) is a cross-sectional view taken along line BB of (a)
- (c) is a uniform material.
- FIG. 1 shows a first embodiment of a reactor according to the present invention, and is a cross-sectional view cut along a plane including an axis O.
- FIG. Drawing 2 is a perspective view showing other forms of the core member in the reactor of a 1st embodiment.
- the reactor D ⁇ b> 1 includes an air-core coil 1 having a flatwise winding structure, which will be described later, and a core portion 2 that covers the air-core coil 1.
- the explanation starts with the core unit 2.
- the core part 2 includes first and second core members 3 and 4 that are magnetically (for example, magnetic permeability) isotropic and have the same configuration.
- the first and second core members 3 and 4 are respectively formed from, for example, the plate surfaces of the disk portions 3a and 4a having a disk shape, the cylindrical portions 3b having the same outer diameter as the disk portions 3a and 4a, 4b is configured to be continuous.
- the first and second core members 3 and 4 are overlapped with each other by the end surfaces of the cylindrical portions 3b and 4b, so that the core portion 2 has a space for accommodating the air-core coil 1 therein.
- the end portions of the cylindrical portions 3b and 4b of the first and second core members 3 and 4 are provided with convex portions 3c and 4c for positioning, and a concave portion 3d corresponding to the convex portions 3c and 4c. , 4d may be provided.
- substantially cylindrical first and second convex portions 3c-1, 3c- are formed on the end surfaces of the cylindrical portions 3b, 4b of the first and second core members 3, 4, respectively. 2; 4c-1, 4c-2 are provided at intervals of 180 ° (positions facing each other).
- the first and second convex portions 3c-1, 3c-2; 4c-1, 4c-2 are fitted in the end surfaces of the cylindrical portions 3b, 4b of the first and second core members 3, 4, respectively.
- Such substantially cylindrical first and second recesses 3d-1, 3d-2; 4d-1, 4d-2 are provided at intervals of 180 ° (positions facing each other).
- the first and second convex portions 3c-1, 3c-2; 4c-1, 4c-2 and the first and second concave portions 3d-1, 3d-2; 4d-1, 4d-2 are respectively They are provided at 90 ° intervals.
- the first and second core members 3 and 4 have the same shape
- FIG. 2 shows the first and second core members 3 and 4 each having a protrusion described later. One of the is shown.
- the first and second core members 3, 4 are more reliably abutted. Can be.
- the first and second core members 3 and 4 have predetermined magnetic properties.
- the first and second core members 3 and 4 are preferably made of the same material in order to reduce costs.
- the first and second core members 3 and 4 are soft magnetic in order to easily realize desired magnetic characteristics (relatively high magnetic permeability) and to easily form the desired shape. It is preferably formed by molding body powder.
- This soft magnetic powder is a ferromagnetic metal powder. More specifically, for example, pure iron powder, iron-based alloy powder (Fe—Al alloy, Fe—Si alloy, Sendust, Permalloy, etc.) and amorphous powder, Examples thereof include iron powder having an electrical insulating film such as a phosphoric acid-based chemical film formed on the surface. These soft magnetic powders can be manufactured, for example, by an atomizing method. In general, since the saturation magnetic flux density is large when the magnetic permeability is the same, the soft magnetic powder is preferably a metal material such as the above pure iron powder, iron-based alloy powder, and amorphous powder.
- the first and second core members 3 and 4 are members having a predetermined density obtained by compacting a soft magnetic powder by using, for example, known conventional means.
- This member has, for example, the magnetic flux density-relative permeability characteristic shown in FIG.
- FIG. 3 is a diagram showing magnetic flux density-relative magnetic permeability characteristics by density in a magnetic body containing iron powder.
- the horizontal axis in FIG. 3 indicates the magnetic flux density (T), and the vertical axis indicates the relative magnetic permeability.
- a member having a density of 6.00 g / cc or more in this example, a density of 5.99 g / cc ( ⁇ ), a density of 6.50 g / cc ( ⁇ ), a density of 7.00 g / cc ( ⁇
- the relative permeability peaks from a relatively high initial relative permeability as the magnetic flux density increases (maximum value). ) And then gradually decrease.
- the relative permeability is increased from the initial relative permeability of about 120 as the magnetic flux density increases until the magnetic flux density reaches 0.35 T. It increases rapidly to about 200 and then gradually decreases.
- the magnetic flux density that becomes the initial relative permeability is about 1T.
- the initial relative magnetic permeability of the member having a density of 5.99 g / cc, the member having a density of 6.50 g / cc, and the member having a density of 7.50 g / cc is about 70, about 90, and about 160, respectively.
- Such a material having an initial permeability of about 50 to 250 (in this example, a material of about 70 to about 160) has substantially the same magnetic flux density-relative permeability profile, and has a relatively high relative permeability. Material.
- the air-core coil 1 is provided with a cylindrical air-core portion S1 having a predetermined diameter at the center (on the axis O).
- the air-core coil 1 is formed by winding a ribbon-shaped conductor member 10 having a predetermined thickness by a predetermined number of times while leaving the air-core portion S1 in a mode in which the width direction thereof is substantially coincident with the axial direction. Is done.
- the air-core coil 1 is installed in the internal space of the core portion 2 (the space formed by the inner wall surfaces of the first and second core members 3 and 4).
- FIGS. 4A to 4D are diagrams for explaining a reactor manufacturing process according to the first embodiment.
- the ribbon-shaped conductor member 10 having a predetermined thickness shown in FIG. 4 (a), as shown in FIG. 4 (b), a predetermined number of times from a position spaced from the center (axial core) by a predetermined diameter. Just wrap it around. Thereby, the air core coil 1 of the pancake structure provided with the columnar air core part S1 which has a predetermined diameter in the center is formed.
- the first and second core members 3 and 4 are overlapped by the end faces of the cylindrical portions 3b and 4b so as to sandwich the air-core coil 1 therebetween. Thereby, a disk-shaped reactor D1 as shown in FIG. 4D is generated.
- the reactor D1 having such a configuration includes a reactor in which the air core coil 1 is exposed to the outside without being provided with the core portion 2 (referred to as Comparative Example 1), and the air core coil 1 is covered with the core portion 2 and has an axial core.
- Comparative Example 2 provided with a magnetic body 15 on O (air core S1 shown in FIGS. 1 and 4).
- FIGS. 5 (a) to 5 (f) are diagrams showing the relationship between the configuration of the reactor and the magnetic flux lines.
- 5A is a cross-sectional view showing the structure of the reactor according to Comparative Example 1
- FIG. 5B is a cross-sectional view showing the structure of the reactor D1 according to this embodiment
- FIG. 10 is a cross-sectional view illustrating a configuration of a reactor according to Comparative Example 2.
- FIG. 5D is a magnetic flux diagram of the reactor according to the comparative example 1
- FIG. 5E is a magnetic flux diagram of the reactor D1 according to the present embodiment
- FIG. 5F is the comparative example.
- 2 is a magnetic flux diagram of the reactor according to FIG. In consideration of the visibility of the drawing, the description of the boundary line between adjacent windings is omitted in FIGS. 5 (d) to 5 (f).
- FIG. 6 shows the experimental results on the change in inductance when the current is changed in the range of 0 to 200 (A) in the reactor according to this embodiment and Comparative Examples 1 and 2.
- a graph A shows a change in the inductance of the reactor according to the comparative example 1
- a graph B shows a change in the inductance of the reactor D1 according to the present embodiment
- a graph C shows the inductance of the reactor according to the comparative example 2. Shows changes.
- the magnetic flux lines leak out of the reactor D1 to the same extent as the reactor according to the comparative example 2 due to the presence of the core portion 2 as in the comparative example 2. It can be prevented or suppressed.
- the reactor D1, as shown in the graph B of FIG. 6, has an advantage that a stable inductance characteristic can be obtained over the entire current range, and the inductance is larger than that of the comparative example 1.
- FIG. 7 is a cross-sectional view showing an edgewise winding structure in which conductor members are wound so as to overlap in the axial direction.
- FIG. 8 is a diagram showing the relationship between the frequency f and the loss in the reactor for each winding structure (flatwise winding structure and edgewise winding structure), where the horizontal axis indicates the frequency f and the vertical axis indicates Indicates loss.
- FIG. 9 is a diagram showing the cross-sectional shapes of the conductor member 10 and the coil.
- the air-core coil is composed of a conductor, generally, when the air-core coil is energized, an eddy current is generated on a plane (orthogonal plane) perpendicular to the magnetic field lines, thereby generating a loss.
- the magnitude of this eddy current is proportional to the area intersecting the magnetic flux lines, that is, the area of a continuous surface perpendicular to the magnetic flux direction when the magnetic flux density is the same. Since the magnetic flux direction is along the axial direction in the air-core coil, the eddy current is proportional to the area of the radial surface perpendicular to the axial direction of the conductor constituting the air-core coil.
- the loss caused by eddy currents is greater than the loss caused by electrical resistance. Become dominant. Therefore, in the edgewise winding structure, the loss depends on the frequency of the energized current, and as shown in FIG. 8, the loss increases as the frequency increases, and the initial loss becomes relatively small due to the relatively small electric resistance. .
- the conductor member 10 has a small area in the radial direction as shown in FIG.
- the area of 10 axial directions is large. Therefore, in the flatwise winding structure, almost no eddy current is generated, and as shown in FIG. 8, the loss is substantially constant regardless of the frequency of the energized current, and the initial loss is also relatively small due to the relatively small electric resistance. .
- the conductor member 10 is overlapped in the axial direction.
- the width direction of the conductor member 10 substantially coincides with the axial direction and is continuous, so that heat conduction is performed more effectively than the edgewise winding structure. be able to. Therefore, the flatwise winding structure is superior to the edgewise winding structure in terms of the loss and heat conduction.
- the width W of the conductor member 10 constituting the air-core coil 1 is the length in the radial direction of the conductor member 10 ( Hereinafter referred to as thickness).
- the reactor is configured by the conductor member having a rectangular cross section in which the ratio (t / W) of the thickness t of the conductor member 10 to the width W of the conductor member 10 is 1 or less.
- the inner wall surface (hereinafter referred to as the upper wall surface) of the first core member 3 and the inner wall surface (hereinafter referred to as the lower wall surface) of the second core member 4 respectively facing the upper and lower end surfaces of the air-core coil 1 are: It is necessary to be parallel at least in the region covering the coil end. Further, the upper wall surface and the lower wall surface and the circumferential surface of the conductor member 10 of the air-core coil 1 need to be perpendicular. When these conditions are not satisfied, the magnetic flux lines passing through the interior of the air-core coil 1 are not parallel to the axial direction even if the conditions relating to the cross-sectional shape of the conductor member 10 are set. Therefore, in the present embodiment, as described below, the parallelism is set such that the upper wall surface of the first core member 3 and the lower wall surface of the second core member 4 can be regarded as parallel.
- FIG. 10 is an explanatory diagram of a method for calculating parallelism.
- the distance at the innermost circumferential position (hereinafter referred to as the innermost circumferential position) is L1.
- the interval at the outermost position (hereinafter referred to as the outermost position) is L2.
- the average value of the distance between the upper wall surface of the first core member 3 and the lower wall surface of the second core member 4 at the position from the innermost circumferential position to the outermost circumferential position is L3.
- the average value L3 is below the upper wall surface of the first core member 3 and the second core member 4 at a plurality of positions cut at predetermined intervals in the radial direction between the innermost circumferential position and the outermost circumferential position. It is the average value of the distance from the wall surface.
- FIG. 11 is a magnetic flux diagram when the parallelism is ⁇ 1/10
- FIG. 12 is a magnetic flux diagram when the parallelism is 1/10
- FIG. 13 shows the parallelism. It is a magnetic flux diagram at the time of 1/100.
- the magnetic flux lines passing through the air-core coil 1 (the magnetic flux lines indicated by dotted lines) are parallel to the axial direction.
- the parallelism is ⁇ 1/10 and 1/10
- the magnetic flux lines passing through the interior of the air-core coil 1 are not parallel to the axial direction. If the magnetic flux lines passing through the inside of the air-core coil 1 are not parallel, as described above, the eddy current loss increases and the inductance becomes absolutely small.
- the present inventor verified the distribution of magnetic flux lines while changing the parallelism in various ways. As a result, the present inventor has found that in order to make the magnetic flux lines passing through the inside of the air-core coil 1 parallel, it is necessary to set the absolute value of the parallelism to 1/50 or less.
- the core part 2 is produced
- the upper wall surface of the first core member 3 and the lower wall surface of the second core member 4 are at least in a region covering the end of the air core coil 1. Need to be parallel. The allowable shape of the protrusion h and the like will be described later.
- the inventor has a radius R (see FIG. 1) from the axis O of the air-core coil 1 to the outer peripheral surface of the air-core coil 1, a width W of the conductor member 10 constituting the air-core coil 1, Focusing on the ratio R / W, a simulation experiment was conducted on the mode of magnetic flux line distribution when the ratio R / W was changed.
- 15 to 24 show that the total volume of the reactor D1, the cross-sectional area of the rectangular cross section of the conductor member 10, and the number of turns of the air-core coil 1 are constant, and the ratio R / W is “10”, “5”, “3.3”, “2.5”, “2”, “1.7”, “1.4”, “1.3”, “1.1”, “1” It is a magnetic flux diagram. 15 to 24, the description of the boundary line between adjacent windings is omitted.
- Stability I (%) ⁇ (Lmax ⁇ Lmin) / Lav ⁇ ⁇ 100 (1) Is set.
- Lmin is an inductance (hereinafter referred to as minimum inductance) at a minimum current in a current range (hereinafter referred to as use range) that can be supplied to the inverter
- Lmax is the use range.
- Is the inductance at the maximum current (hereinafter referred to as the maximum inductance)
- Lav is the average value of the plurality of inductances corresponding to the plurality of current values in the usage range (hereinafter referred to as the average inductance).
- FIG. 25 shows a graph K representing the change in the stability I with respect to the change in the ratio R / W, with the ratio R / W as the horizontal axis and the stability I as the vertical axis.
- a graph representing changes in the maximum inductance Lmax, the minimum inductance Lmin, and the average inductance Lav with respect to the change in the ratio R / W is also shown by expressing the inductance of each reactor on another vertical axis. .
- the maximum inductance Lmax increases almost in proportion to the ratio R / W.
- the minimum inductance Lmin changes so as to have a mountain-shaped waveform that becomes maximum when the ratio R / W is about 6.
- the average inductance Lav changes so as to have a mountain-shaped waveform that becomes maximum when the ratio R / W is about 8.
- the stability I needs to be suppressed to 10% or less. Therefore, referring to FIG. 25, the ratio R / W is R / W ⁇ 4 (2) It is necessary to set to.
- the reactor for example, electric railway vehicles, electric vehicles, hybrid vehicles, uninterruptible power supplies, industrial inverters such as solar power generation, or high-output home appliances such as air conditioners, refrigerators, washing machines, etc.
- industrial inverters such as solar power generation
- high-output home appliances such as air conditioners, refrigerators, washing machines, etc.
- an inductance of at least 100 ⁇ H or more is necessary. Therefore, referring to FIG. 25, the ratio R / W is R / W ⁇ 2 (3) Needs to be set to
- the reactor D1 according to this embodiment can stably generate a large inductance in a wide current range while suppressing noise, processing cost, and eddy current loss by having the following configuration. .
- the ratio t / W of the width W of the conductor member 10 to the thickness t of the conductor member 10 constituting the air-core coil 1 is 1 or less.
- a protrusion h is formed at a part facing the air core part S ⁇ b> 1 of the air core coil 1.
- the protrusion h is formed on the upper surface side and the bottom surface side of the core portion 2 with respect to the air-core coil 1.
- the radius of the air core portion S1 of the air core coil 1 is r
- the height from the core surface facing the coil end of the protrusion h is a
- the radius of the bottom surface of the protrusion h is A, 0 ⁇ a ⁇ W / 3 and r> ⁇ (A 2 + (W / 2) 2 ) If the protrusion h is formed so as to satisfy the above, the inductance can be further improved.
- the protrusion h is provided on the core portion of the air core portion in this way, the portion where the magnetic flux passes through the air portion (that is, the portion that has a large resistance to the magnetic flux) is narrowed, the flow of the magnetic flux is improved, and the inductance Will increase.
- FIG. 26 is a schematic view of a protrusion h formed on the core 2.
- the radius of the air core part in the air core coil 1 is r
- the radius of the bottom surface of the protrusion h is A, 0 ⁇ a ⁇ W / 3 and r> ⁇ (A 2 + (W / 2) 2 )
- FIG. 27 to 30 show magnetic flux diagrams when r, a and A are changed.
- the example shown in FIG. 27 is an example that satisfies the condition of 0> a ⁇ W / 3 but does not satisfy the condition of r> ⁇ (A 2 + (W / 2) 2 ).
- the magnetic flux lines passing through the inside are not parallel to the axial direction.
- the relationship 0 ⁇ a ⁇ W / 3 and r> ⁇ (A 2 + (W / 2) 2 ) is satisfied.
- the magnetic flux lines passing through the interior of 1 are parallel in the axial direction, while the magnetic flux line density in the vicinity of the protrusions is increased to improve the inductance.
- the shape of the core portion 2 is the same as the example shown in FIG. 27, but the shape of the protruding portion h is different as shown by arrows X1 to X3.
- FIG. 31 is a graph showing the state of inductance change when the height a of the protrusion h is changed with the current as the horizontal axis and the inductance change (%) as the vertical axis.
- a exceeds W / 3 the change rate of the change in inductance accompanying the increase in current exceeds 10%, and the stability is deteriorated.
- the generation of eddy current loss can be further reduced by setting the ratio t / W to 1/10 or less.
- the thickness t of the conductor member 10 is equal to or less than the thickness ⁇ (hereinafter referred to as skin thickness) determined by the angular frequency, the magnetic permeability, and the electrical conductivity, it is effective in reducing eddy current loss.
- the thickness of the conductor member 10 is larger than the skin thickness ⁇ , the eddy current loss generated in the conductor member 10 increases. Therefore, in the reactor D1 of the present embodiment, eddy current loss can be reduced when the thickness t of the conductor member 10 is set to ⁇ or less.
- the difference (L1 ⁇ L2) between the upper wall surface of the member 3 and the lower wall surface of the second core member 4 is divided by an average value L3 ((L1 ⁇ L2) / L3).
- the absolute value is set to 1/50 or less.
- FIGS. 32 (a) to 32 (e) are diagrams showing a method for manufacturing a reactor when a long conductor 50 protruding from the upper surface and the lower surface of the core portion 2 is provided on the air core portion. .
- a hole H having the same diameter as the air core portion S 1 is formed in a portion of the core portion 2 corresponding to the air core portion S 1 of the air core coil 1.
- the conductor 50 which penetrates the core part 2 via may be installed.
- the conductor 50 serves as a lead for a long coil.
- FIG. 32B a cylindrical conductor 50 is shown, but similar inductance characteristics can be obtained with either a cylindrical shape or a solid cylindrical shape.
- the reactor can be forcibly cooled by circulating water or air in the hollow. Therefore, when the conductor 50 has a cylindrical shape, higher cooling performance can be provided to the reactor than when the conductor 50 has a solid columnar shape.
- the heat dissipation performance of the reactor D1 can be improved.
- the reactor having such a configuration can be manufactured by the following process, for example. First, the end of the ribbon-like conductor member 10 (FIG. 32A) having a predetermined thickness is joined to an appropriate place on the circumferential surface of the cylindrical conductor 50 (FIG. 32B) (FIG. 32C). ). Thereafter, as shown in FIG. 32D, the conductor member 10 is wound a predetermined number of times. Thereby, the unit which has the air-core coil 1 of a pancake structure is formed.
- the end of the ribbon-shaped conductor member 10 is joined to an appropriate place on the circumferential surface of the long conductor 50 that penetrates the core portion 2 to form the long conductor 50 and the ribbon-shaped conductor.
- the air core coil 1 is created by electrically connecting the conductor member 10 and winding the ribbon-like conductor member 10 around the long conductor 50 a predetermined number of times.
- the long conductor 50 functions as one of the electrodes to be installed in the air-core coil 1 and when the air-core coil 1 is produced (a ribbon-like conductor member is wound). It can have a function as a base material.
- the long conductor is made of a metal having high thermal conductivity, the heat dissipation of the heat inside the reactor can be improved.
- the magnetic flux lines at the peripheral edge of the air-core coil 1 are forcibly vertically oriented so that the AC magnetic flux lines do not enter the cylinder of the conductor 50. be able to. Therefore, a fixing bolt or the like can be inserted through the cylinder of the conductor 50 without affecting the reactor characteristics. Therefore, no limitation is imposed on the diameter of the conductor, and the shape of the reactor D1 and the degree of freedom of the mounting form can be increased.
- FIG. 33 is a view showing a modified form of the core part 2, in which FIG. 33 (a) is an assembled perspective view of the core part 2 in the reactor according to the modified form, and FIG. It is sectional drawing which cut
- FIG. 33 (a) is an assembled perspective view of the core part 2 in the reactor according to the modified form
- FIG. 33 (a) is an assembled perspective view of the core part 2 in the reactor according to the modified form
- FIG. It is sectional drawing which cut
- the core portion 2 includes disk-shaped first and second disk core members 20 and 21 having a diameter larger than the outer diameter of the air-core coil 1 by a thickness t of the conductor member 10, and the core member 20, And a cylindrical core member 22 having a columnar outer peripheral surface having the same diameter as 21.
- First and second disc core members 20 and 21 are bonded to each end of the cylindrical core member 22.
- the air-core coil 1 and the core portion 2 are basically cylindrical in shape, but are not limited to this, and may be in a polygonal column shape.
- the polygonal column shape include a quadrangular column shape, a hexagonal column shape, and an octagonal column shape.
- the air-core coil and the core portion may have a columnar shape and a polygonal column shape.
- the air-core coil may have a cylindrical shape
- the core portion may have a polygonal column shape.
- the air core coil may have a polygonal column shape
- the core portion may have a columnar shape.
- a reactor D2 in which an air-core coil and a core part are in a quadrangular prism shape will be described.
- FIG. 34 is a partially transparent perspective view showing the configuration of the reactor D2.
- FIG. 34 is described so that the inner coil configuration can be seen through substantially half of the core.
- FIG. 35 is a diagram showing the magnetic flux density in the reactor shown in FIG. 34 as a vector.
- FIG. 35 shows a cross-sectional view of the reactor when the core portion is cut by a substantially central plane including the shaft core so as to bisect the core portion.
- FIG. 36 is a diagram showing inductance characteristics in the reactor shown in FIG.
- the horizontal axis of FIG. 36 is current (A), and the vertical axis is inductance ( ⁇ L).
- this quadrangular prism-shaped reactor D2 includes an air-core coil 6 having a flat-wise winding structure and a core portion 7 that covers the air-core coil 6.
- the radius R of the air-core coil is referred to as the shortest distance R from the center of the air-core coil to the outer peripheral surface.
- the core portion 7 includes first and second core members 8 and 9 that are magnetically (for example, magnetic permeability) and have the same configuration as the core portion 2.
- Each of the first and second core members 8 and 9 has, for example, the same size as a quadrangle composed of four sides of the square plate portions 8a and 9a from the plate surface of the square plate portions 8a and 9a having a quadrangular shape (rectangular shape).
- the cylinder portions 8b and 9b having a square outer periphery and a rectangular section are configured to be continuous.
- the air core coil 6 is provided with a quadrangular columnar air core S2 having a square of a predetermined size at the center (on the axis O).
- the air-core coil 6 is formed by winding a ribbon-shaped conductor member having a predetermined thickness a predetermined number of times so that the outer shape thereof is a quadrangular prism shape in a mode in which the width direction thereof substantially coincides with the axial direction. Is done.
- the air-core coil 6 is installed in the internal space of the core portion 7 (the space formed by the inner wall surfaces of the first and second core members 8 and 9).
- the magnetic flux lines in the air-core coil 6 are substantially parallel to the axial direction, and the same effect as the reactor D1 shown in FIG. 1 is obtained.
- the inductance of the reactor D2 having such a configuration is larger than the inductance of the reactor D1 shown in FIG.
- the inductance characteristic of reactor D2 having such a configuration is the same profile as the inductance characteristic of reactor D1 shown in FIG.
- the reactor D1 having the configuration shown in FIG. 1 is compared with the reactor D2 having the configuration shown in FIG. 34 under the condition that the inductance at 40A is substantially the same.
- the space formed in the core portion 7 according to the modification [3] and the core portion 2 according to the first embodiment is low.
- a magnetically permeable magnetic material may be filled.
- an insulating material such as BN (boron nitride) ceramic may be filled.
- BN boron nitride
- the thickness of the insulating material is preferably 1 mm or less.
- the insulating material may be configured by being filled with a compound.
- the air core coil 1 improves the thermal conductivity in the axial direction (vertical direction), and the Joule heat generated in the air core coil 1 is conducted to the core portions 2 and 7 through the insulating material. Can be efficiently exhausted to the outside. For this reason, if the core part 2 is specifically cooled from the outside, it is possible to further prevent the inside of the reactors D1 and D2 from becoming hot.
- FIGS. 37A, 37 ⁇ / b> B, and 37 ⁇ / b> C are diagrams showing a partial configuration of the reactor further including an insulation member for insulation resistance.
- FIG. 37 is a view showing a part of a reactor including an insulating member
- FIG. 37 (A) shows the insulating member of the first aspect
- FIG. 37 (B) shows the insulating member of the second aspect
- FIG. 37C shows the insulating member of the third aspect.
- FIG. 38 is a diagram showing the results of the dielectric breakdown voltage (2.0 kV) with respect to the material and thickness ( ⁇ m) of the insulating member in the reactor having the configuration shown in FIG.
- an insulating member IS may be further provided between the other end portion of the air-core coil 1 and the other surface of the core portion facing the other end portion.
- Such an insulating member IS is a resin sheet having heat resistance such as PEN (polyethylene terephthalate) or PPS (polyphenylene sulfide).
- PEN polyethylene terephthalate
- PPS polyphenylene sulfide
- the insulating member IS is a sheet-like insulating member disposed between one end of the air-core coil 1 and one surface of the core portion facing the one end. It may be IS1-1, or a sheet-like insulating member IS1-2 disposed between the other end of the air-core coil 1 and the other surface of the core facing the other end.
- FIG. 37 (A) the insulating member IS is a sheet-like insulating member disposed between one end of the air-core coil 1 and one surface of the core portion facing the one end. It may be IS1-1, or a sheet-like insulating member IS1-2 disposed between the other end of the air-core coil 1 and the other surface of the core facing the other end.
- the insulating member IS covers a part of the inner peripheral surface and a part of the outer peripheral surface of the air-core coil 1, and one end of the air-core coil 1 and this one end.
- a sheet-like insulating member IS2-1 disposed between one side of the core part facing the part, and a part of the inner side surface and a part of the outer side surface of the air-core coil 1, and the other side of the air-core coil 1
- It may be a sheet-like insulating member IS2-2 disposed between the end portion and the other surface of the core portion facing the other end portion. For example, as shown in FIG.
- the insulating member IS covers the entire inner and outer peripheral surfaces of the air-core coil 1 so as to enclose the air-core coil 1, and the air-core coil 1.
- the insulating member IS3 may be disposed so as to cover the entire one end and the other end.
- the dielectric strength between the air-core coil and the core portion can be further improved.
- FIG. 38 shows a case where a kapton sheet (polyimide) is used as the insulating members IS1-1 and IS1-2, and the thickness is 25 ⁇ m, 50 ⁇ m and 100 ⁇ m when a voltage of 2.0 kV is applied. The result of dielectric strength is shown.
- FIG. 38 shows the results of the withstand voltage when PEN sheets are used as the insulating members IS1-1 and IS1-2 and the thickness is 75 ⁇ m and 125 ⁇ m and a voltage of 2.0 kV is applied. .
- FIG. 38 shows the results of the withstand voltage when PEN sheets are used as the insulating members IS1-1 and IS1-2 and the thickness is 75 ⁇ m and 125 ⁇ m and a voltage of 2.0 kV is applied. .
- FIG. 38 shows the results of the withstand voltage when a voltage of 2.0 kV is applied when PPS is used as the insulating members IS1-1 and IS1-2 and the thickness thereof is 100 ⁇ m.
- FIG. 38 shows the results of the withstand voltage when Nomex is used as the insulating members IS1-1 and IS1-2 and a voltage of 2.0 kV is applied when the thickness is 100 ⁇ m.
- the thickness of the insulating member IS is preferably 100 ⁇ m or more.
- FIG. 39 is a plan view showing a modification of the core 2.
- a plurality of concave grooves Y are provided radially on the upper surface of the core portion 2 from the vicinity of the axis O toward the outer peripheral side.
- a cooling medium such as air or cooling water along the concave groove Y, the core part 2 is forcibly cooled, so that the heat dissipation performance of the reactor D1 can be improved.
- FIGS. 40A and 40B are views showing the configuration of the reactor of the first aspect further including a heat sink.
- 41 (A) and 41 (B) are diagrams showing the configuration of the reactor of the second aspect further including a heat sink.
- FIGS. 42A and 42B are views showing the configuration of the reactor of the third aspect further including a heat sink.
- (A) shows the entire configuration
- (B) shows the portion of the heat transfer member in the core portion 2.
- FIG. 43 is a diagram illustrating a configuration of a reactor according to a comparative example further including a heat sink.
- a heat radiator for radiating the heat generated in the reactor D1 to the outside of the reactor D1, that is, a so-called heat sink HS may be further provided.
- a heat transfer member that conducts the heat of the air core coil 1 to the core portion 2. Is preferably provided between the air-core coil 1 and the core portion 2.
- the reactor D1 further provided with such a heat sink HS is fixed on the heat sink HS via a heat transfer member PG1.
- the reactor D1 further provided with the heat sink HS has one end of the air-core coil 1 and one side of the core facing the one end.
- a heat transfer member PG2 may be further provided.
- a heat transfer member PG2 is further provided between one end of the air-core coil 1 and one surface of the core portion facing the one end.
- a heat transfer member PG3 may be further provided between the other end portion of the air-core coil 1 and the other surface of the core portion facing the other end portion.
- heat transfer member PG4 may further be provided over the whole interior space of core part 2 (except for the portion of coil 1).
- the reactor D1 shown in FIGS. 40 to 42 includes the insulating member IS described above.
- the heat transfer member PG (PG1 to PG4) is a member for conducting the heat of the air-core coil 1 to the core portion 2, and is preferably a material having a relatively high heat transfer coefficient. And it is preferable that the air-core coil 1 and the core part 2 are closely_contact
- the heat transfer member PG is, for example, heat transfer grease.
- the reactor D1 further including the heat sink HS configured as described above, heat generated in the air-core coil 1 of the reactor D1 is conducted to the heat sink HS via the core portion 2. Therefore, heat can be efficiently radiated from the heat sink HS, and the temperature rise of the reactor D1 can be reduced.
- FIGS. 40 to 42 by further providing a heat transfer member PG between the air core coil 1 and the core portion 2, the heat generated in the air core coil 1 of the reactor D1 is reduced. 2 and 7 are efficiently conducted by the heat sink HS and can be radiated from the heat sink HS. For this reason, it is possible to prevent a decrease (deterioration) in the insulating property of the insulating material used for insulating between the wound conductor members 10 in the air-core coil 1, and to maintain the insulating property of the insulating material.
- a resin material such as polyimide and PEN is used as the insulation between the wound conductor members 10 in the air-core coil 1 and the insulation member IS.
- the heat sink HS is further provided, but the heat transfer member PG is not provided between the air-core coil 1 and the core portion 2.
- the temperature of the reactor exceeds the heat resistance temperature of these resins.
- the temperature of the reactor D1 is about 140 ° C. at the highest. It was in a substantially steady state (thermal equilibrium state) and was below the heat resistance temperature of these resins.
- the heat conductivity of the heat transfer member PG is preferably 0.2 W / mK or more, and more preferably 1.0 W / mK or more. Moreover, although the case of the reactor D1 was demonstrated above, the case of the reactor D2 can be demonstrated similarly.
- FIGS. 44 (A), (B) and FIGS. 45 (A), (B) show the structure of a reactor further including a fixing member and a fastening member.
- 44A and 45A are top views
- FIG. 44B is a cross-sectional view taken along the line A1 shown in FIG. 44A
- FIG. 46 is a cross-sectional view taken along the line A2 shown in FIG. 44 and 45 show one reactor.
- the attachment member is omitted.
- the core portion includes a plurality of core members.
- the reactor further includes a fixing member that fixes the core part to an attachment member for attaching the core part, and a fastening member that fastens the plurality of core members to form the core part.
- the reactor may be configured such that the first disposition position of the fixing member and the second disposition position of the fastening member in the core portion are different from each other.
- the core portion can be fixed to the attachment member by the fixing member. For this reason, productivity of assembly and attachment of the reactor can be improved.
- Such a fixing member is, for example, a bolt
- the fastening member is, for example, a bolt and a nut.
- the attachment member is, for example, a substrate, the above-described heat sink HS, a product housing using the reactor, or the like.
- a reactor further provided with such a fixing member and a fastening member includes, for example, an empty space having a flatwise winding structure as shown in FIGS. 44 (A), (B) and FIGS. 45 (A), (B).
- the reactor D3 includes a core coil 51 and a core portion 52 that covers the air-core coil 51.
- the core portion 52 includes first and second core members 53 and 54 that are magnetically (for example, magnetic permeability) and have the same configuration as the core portion 2.
- the first and second core members 53 and 54 have outer peripheries having the same dimensions as the hexagons formed from the six sides of the hexagonal plate portions 53a and 54a, for example, from the plate surfaces of the hexagonal plate portions 53a and 54a having a hexagonal shape.
- the cylindrical sections 53b and 54b having a hexagonal cross section are configured to be continuous.
- the core portion 52 has a space for accommodating the air-core coil 51 inside by overlapping the first and second core members 53 and 54 with each other by the end surfaces of the cylindrical portions 53b and 54b.
- the air-core coil 51 is provided with a cylindrical air-core portion having a predetermined diameter at the center (on the axis O).
- the air-core coil 51 is formed by winding a ribbon-shaped conductor member having a predetermined thickness a predetermined number of times in a mode in which the width direction thereof substantially coincides with the axial direction. It is installed in the space formed by the inner wall surfaces of the first and second core members 53 and 54.
- the first and second core members 53 and 54 in the reactor D3 are provided with fastening members 55 (55-1 to 55-3) and fixing members 56 (56-1) formed along the direction of the axis O.
- Through-holes are provided for insertion of each of .about.56-3).
- These through holes are formed on the corner inner side (vertex inner side) of the hexagonal first and second core members 53, 54, and the through hole for the fastening member 55 and the through hole for the fixing member 56 are: It is provided alternately. That is, in the example shown in FIGS. 44A and 44B and FIGS. 45A and 45B, since the first and second core members 53 and 54 are hexagonal, two adjacent penetrations The angle formed by the hole and the axis O is 60 °.
- the angle formed between the two adjacent through holes for the fastening member 55 and the shaft core O is 120 °.
- the angle formed between the two adjacent through holes for the fixing member 56 and the shaft core O is 120 °.
- a through-hole for the fastening member 55-4 is also provided at the center position of the first and second core members 53 and 54 (the position of the shaft core O).
- the first and second core members 53 and 54 are brought into contact with each other and fastened to the through hole for the fastening member 55 provided in the first and second core members 53 and 54.
- the first and second core members 53 and 54 are fastened to each other by the bolts and nuts.
- the heat transfer member PG is a curable resin
- the fixing member 56 (56-1 to 56-3) is fixed to the heat sink HS as the attachment member.
- a plurality of recesses are formed. More specifically, in order to screw with a male screw formed at one end of a bolt that is the fixing member 56, a female screw is formed on the inner peripheral side surface of these recesses. And after inserting the bolt which is the fixing member 56 in the through-hole for the fixing member 56 provided in the first and second core members 53 and 54, the reactor D3 is screwed into the recess of the heat sink HS. Is fixedly attached to the heat sink HS.
- the productivity of assembly and installation of the reactor can be improved. More specifically, for example, as a method of fixing the first and second core members 53 and 54 as the core portion 52 in a state of being in close contact with each other, a method of closely fixing with a clamp or a close fixing with bolts and nuts A way to do this is conceivable.
- a method of closely fixing with a clamp or a close fixing with bolts and nuts A way to do this is conceivable.
- the first disposition position of the fixing member 56 and the second disposition position of the fastening member 55 are different from each other, and therefore, the fastening of the first and second core members 53 and 54 and the reactor are performed. Since the fixing of D3 can be performed individually, the productivity of assembly and attachment of the reactor D3 can be improved.
- the reactor D3 having such a configuration, when the through holes for the fastening member 55 are connected at, for example, the centers thereof, a triangle having each center as a vertex, for example, a regular triangle is formed. Since the first and second core members 53 and 54 are fastened by the fastening member 55 at these three points, stable fastening is possible. The remaining through-holes for the fixing member 56 form a triangle, for example, a regular triangle, when tied in the same manner. Since the core member 52 is fixed to the attachment member (heat sink HS) by the fixing member 56 at these three points, stable fixing is possible.
- FIG. 46 is an external perspective view of the conductor 30 when the cylindrical or solid columnar conductor 30 is installed in the air core S1. As shown in FIG. 46, when a cylindrical or solid columnar conductor 30 is installed in the air core S1, if the slit Z extending in the axial direction is formed in the conductor 30, the inductance of the reactor D1 increases. Can contribute.
- the core part 2 may be composed of a magnetically isotropic ferrite core.
- the air-core coil 1 when the air-core coil 1 is surrounded by a magnetic material so that there is no leakage magnetic flux, in a laminated core such as a magnetic steel sheet, the magnetic flux lines always pass through the plane, so that the eddy current loss generated in the core portion 2 increases.
- a higher magnetic flux density can suppress the leakage magnetic flux and can be reduced in size, and therefore, a powder core of iron-based soft magnetic powder is preferable to soft ferrite.
- the air-core coil 1 may be constituted by a litz wire obtained by collecting and twisting a plurality of insulated thin conductor wires.
- the ribbon-shaped conductor member 10 constituting the air-core coil 1 includes a conductor layer 12 and an insulating layer 13 as shown in FIGS. 47 (a) and 47 (b) in addition to a uniform material. It may be laminated in the thickness direction.
- 47A is an external perspective view of the ribbon-like conductor member 10 according to the present embodiment
- FIG. 47B is a cross-sectional view taken along the line BB of FIG. 47A.
- the magnitude of the eddy current is proportional to the area of a continuous surface (continuous surface) perpendicular to the magnetic field lines (magnetic flux lines).
- the surface of the conductor member 10 that intersects perpendicularly to the magnetic field lines (magnetic flux lines) is divided by the insulating layer 13 that constitutes a discontinuous portion. According to such a configuration, compared with the case where the air-core coil 1 is configured by the ribbon-shaped conductor member 10 made of a uniform material (see FIG. 47C), it intersects perpendicularly to the magnetic field lines (magnetic flux lines). Since the area of the continuous surface is reduced, the eddy current can be reduced (see FIG. 47 (d)).
- eddy currents flow in opposite directions on the front and back of the wire in a magnetic field, gradually return inside the conductor as the magnetic field decreases, and suddenly return inside the conductor when the crossing situation of the magnetic field changes. For this reason, when a pipe is provided in the vicinity of the coil center, there is a tendency that heat generation becomes prominent in the vicinity of the pipe. According to the configuration in which the end portions in the longitudinal direction of the ribbon-shaped conductor member 10 are joined outside the core portion 2, eddy current can be returned at a location away from the core portion 2, and the air core Heat generation inside the coil 1 can also be prevented.
- each conductor layer 12 itself or a lead wire that is separately led out from each conductor layer 12 is connected.
- the inductor core 100 provided outside the core portion 2 can be joined after passing through in opposite phases. Thereby, an eddy current can be suppressed more effectively.
- FIG. 48 which is an example in the case of two conductor layers 12, an inductor core unit 100 is provided outside the core unit 2, and currents flowing through the conductor layers 12 are in opposite phases to each other.
- the inductor core portion 100 is routed from one end of each conductor layer 12.
- the inductor core unit 100 acts as a large resistance only on the antiphase eddy current and suppresses the current, but has no influence on the drive current flowing in the same phase. Therefore, it is possible to effectively reduce only the eddy current and reduce the overall loss.
- 48 shows an example in which the conductor layer 12 has two layers.
- FIG. 49 is a schematic diagram showing a state of the external inductor core unit 100 in the case where the conductor layer 12 has three layers.
- FIG. FIG. 6 is a schematic diagram showing a state of the external inductor core portion 100 when the conductor layer 12 has four layers.
- each inductor core portion 100 is The flowing currents are merged.
- the first inductor core unit 100 causes the current flowing through the first conductor layer and the current flowing through the second conductor layer to have opposite phases, and then combines these currents. Further, the current flowing through the third conductor layer and the current flowing through the fourth conductor layer are reversed from each other by the second inductor core unit 100, and then these currents are merged. Then, the two currents that are joined together are reversed in phase by the third inductor core unit 100 and then joined together.
- the eddy current loss of the reactor as shown in FIG. 1 in which the conductor layer 12 is a single layer having a thickness of 0.6 mm and the number of coil turns is 32 was examined.
- the eddy current loss of the 1st multilayer reactor of the structure which the conductor layer 12 is 2 layers of thickness 0.3mm, and the edge part of each conductor layer 12 was joined in the exterior of the core part 2 was investigated.
- the conductor layer 12 has two layers with a thickness of 0.3 mm, and the lead wires respectively led out from each conductor layer 12 are in opposite phases to the inductor core provided outside the core portion 2.
- the eddy current loss of the second multi-layer reactor configured to be joined after passing through was investigated. Specifically, these are measured by a resistance value at 10 kHz using an LCR meter.
- the eddy current loss is about 56% in the case of a single layer (basic), and in the second multilayer reactor, the eddy current loss is about 32% in the case of a single layer (basic). It was reduced.
- the reactor can be used as a transformer, for example, a three-phase transformer disclosed in Japanese Patent Laid-Open No. 2001-345224.
- This three-phase transformer is a cable winding type.
- a magnetic circuit is formed by providing iron core yokes on the upper and lower portions of three iron cores corresponding to the three phases of the U phase, the V phase, and the W phase.
- Such an iron core is combined in the shape of a square numeral “8” to form a magnetic line.
- the three-phase transformer (reactor) having such a configuration is arranged in the middle of the power transmission system, and helps to stabilize the voltage.
- the mainstream power source for hybrid vehicles and the like is a synchronous AC motor with a built-in permanent magnet. From the viewpoint of improving riding comfort, this electric motor is required to have smooth rotation.
- the permanent magnet type synchronous AC motor is basically based on a combination (4 to 6) in which the number of magnetic poles on the rotor side is 4 and the number of magnetic poles on the stator side is 6, for example.
- a combination of 8 magnetic poles on the rotor side and 12 magnetic poles on the stator side (8 to 12), or 16 magnetic poles on the rotor side and 16 magnetic poles on the stator side. 24 combinations (16 to 24) are used.
- the torque fluctuation so-called cogging torque
- the generation of vibration is suppressed, leading to an improvement in ride comfort.
- the excitation coil inductances of the U phase, the V phase, and the W phase change asymmetrically with the rotation of the rotor.
- the three-phase AC voltage waveform applied from the inverter is distorted and does not become an ideal sine wave waveform, resulting in torque fluctuation. Therefore, by inserting a three-phase reactor between an in-vehicle inverter mounted on a hybrid vehicle or the like and an electric motor, there is a measure for absorbing and mitigating unnecessary voltage waveforms due to nonlinear inductance, that is, harmonic voltage components. It is valid.
- the above-described conventional three-phase transformer has a relatively large size due to its shape characteristics, and is inconvenient when mounted on an automobile having a limited mounting space.
- three single-layer coils 11u, 11v, and 11w are made thick with a single-layer coil formed by winding a long conductor member insulated with an insulating material as a basic unit.
- a three-layer air-core coil 11 formed by laminating in the direction is used.
- Each of the winding start of these three single-layer coils 11u, 11v, and 11w is mutually independent as the first terminals 11au, 11av, and 11aw of the current line.
- the winding ends of these three single-layer coils 11u, 11v, and 11w are independent from each other as second terminals 11bu, 11bv, and 11bw of the current line.
- the first single-layer coil 11u among the three single-layer coils is, for example, a three-phase AC U-phase coil.
- the first single-layer coil 11u is formed by winding a long conductor member insulated with a film-like electrical insulation layer from the center in a spiral shape.
- the first single-layer coil 11u has a predetermined inductance according to the specifications. Winding ends.
- One end of the first single layer coil 11u, which is the start of winding is a first terminal 11au of the current line, and is drawn out from a hole formed in the axial center of the core portion 2.
- the other end, which is the end of winding of the first single layer coil 11u is a second terminal 11bu of the current line, and is drawn out from a hole formed in the cylindrical portion 3b (4b) of the core portion 2.
- the second single-layer coil 11v is, for example, a three-phase AC V-phase coil.
- the second single-layer coil 11v is formed by winding a long conductor member covered with a film-like electrical insulation layer in a spiral shape from the center.
- the second single-layer coil 11v has a predetermined inductance according to the specifications. Winding ends.
- One end at the beginning of winding of the second single-layer coil 11v is a first terminal 11av of the current line, and is drawn out from a hole formed in the axis of the core portion 2.
- the other end, which is the end of winding of the second single-layer coil 11v is a second terminal 11bv of the current line, and is drawn out from a hole formed in the cylindrical portion 3b (4b) of the core portion 2.
- the third single-layer coil 11w of the three single-layer coils is, for example, a three-phase AC W-phase coil.
- the third single-layer coil 11w is formed by winding a long conductor member insulated and covered with a film-like electrical insulation layer from the center in a spiral shape.
- the third single-layer coil 11w has a predetermined inductance according to the specifications. Winding ends. One end at the beginning of winding of the third single-layer coil 11w is the first terminal 11aw of the current line, and is drawn out from a hole formed in the axis of the core portion 2. The other end, which is the end of winding of the third single-layer coil 11w, is the second terminal 11bw of the current line, and is drawn out from the hole formed in the cylindrical portion 3b (4b) of the core portion 2.
- the three single-layer coils 11u, 11v, and 11w are stacked in the thickness direction while being electrically insulated by an electrical insulating film, and are firmly fixed in the core portion 2.
- the cross section of the long conductor member is preferably a rectangular shape so that it can be easily laminated.
- These three stacked single-phase coils 11u, 11v, and 11w are not electrically conductive because they are electrically insulated, but are magnetically coupled to each other by the proximity effect of the stacked layers. Thus, a magnetic circuit is formed.
- the reactor D By configuring the reactor D in this way, three-phase coils can be accommodated in one coil space, so that the physique can be reduced as compared with a conventional three-phase reactor having the same power capacity. it can.
- the reactor D having such a configuration is particularly suitable when mounted on a moving body (vehicle) such as an electric vehicle, a hybrid vehicle, a train, and a bus having a limited mounting space. Further, the reactor D having such a configuration can absorb and smooth the harmonic distortion voltage (so-called ripple) from the inverter in the power line from the inverter to the AC motor. As a result, the reactor D has a sinusoidal waveform. A close waveform can be output to the motor.
- the reactor D having such a configuration has a three-phase coil fixed together with the electrical insulating film, so that it has high rigidity as a structure and suppresses magnetic force contraction vibration caused by application of alternating current. You can also
- an air core portion is provided at a location corresponding to the air core portion S1 of the three-layer air core coil 11 of the core portion 2.
- a hole H having substantially the same diameter as S ⁇ b> 1 may be formed, and a cooling pipe PY penetrating the core portion 2 through the hole H may be installed.
- a fluid such as a gas such as air or a liquid such as water is circulated through the cooling pipe PY. Since the center portion of the above-described three-layer air-core coil 11 is located at the center of the core portion 2 in the configuration shown in FIG. 51, current Joule heat due to energization may easily be trapped without being wasted.
- the cooling pipe PY by providing the cooling pipe PY, the current Joule heat can be guided to the outside by the fluid flowing through the cooling pipe PY to be waste heat.
- an electric part is connected to a portion of the cooling pipe PY that can come into contact with the single layer coils 11u, 11v, 11w (for example, a winding start portion of the single layer coils 11u, 11v, 11w).
- An insulating member such as an insulating film is used.
Abstract
Description
0<a≦W/3、且つ、r>√(A2+(W/2)2)
を満足するように形成されていることを特徴とする。この構成によれば、リアクトルのインダクタンスを更に向上させることができる。
安定度I(%)={(Lmax-Lmin)/Lav}×100 ・・・(1)
が設定される。
R/W≦4 ・・・(2)
に設定することが必要である。
R/W≧2 ・・・(3)
に設定される必要がある。
2≦R/W≦4 ・・・(4)
を見出した。
(1)空芯コイル1を構成する導体部材10の厚みtに対する導体部材10の幅Wの比t/Wが、1以下である。
(2)空芯コイル1の上下両端面に対向する、第1コア部材3の内壁面(上壁面)と第2コア部材4の内壁面(下壁面)とを平行とみなせるように、平行度が設定される。
(3)空芯コイル1における軸芯Oから空芯コイル1の外周面までの半径Rと、空芯コイル1(導体部材)の幅Wと、の比R/Wが、2≦R/W≦4である。
(4)コア部2の各部位のうち、空芯コイル1の空芯部S1に面する部位に突起部hを形成する。突起部hは、空芯コイル1に対してコア部2の上面側、底面側共に形成される。ここで、空芯コイル1の空芯部S1の半径をr、突起部hのコイル端部に対向するコア面からの高さをa、突起部hの底面の半径をAとしたとき、
0<a≦W/3、且つ、r>√(A2+(W/2)2)
を満足するように突起部hを形成すると、インダクタンスを更に向上することができる。
0<a≦W/3、且つ、r>√(A2+(W/2)2)
を満足するように突起部hが形成されると、インダクタンスが増加することがわかった。
これは、空芯コイル1の内部を通る磁束線が軸方向で平行となるのを妨げることなく、磁束の流れが良くなるためである。
(5)前記比t/Wを1/10以下とすることによって、さらに渦電流損の発生を低減することができる。
(6)導体部材10の厚みtが、角周波数、透磁率および電気伝導率により定められる厚みδ(以下、表皮厚みという)以下であると、渦電流損の低減に有効である。
δ=(2/ωμσ)1/2
で表される。ここで、ωは角周波数、μは透磁率、σは電気伝導率である。
2,7 コア部
3,4,8,9 第1,第2コア部材
3a,4a,8a,9a 円板部
3b,4b,8b,9b 円筒部
3c,4c 凸部
3d,4d 凹部
20~22 コア部材
D1,D2 リアクトル
S1,S2 空芯部
Y 凹溝
Z スリット
Claims (12)
- 長尺の導体部材を巻回して形成される空芯コイルと、
前記空芯コイルの両方の端部及び外周部を覆うコア部と、を備え、
前記空芯コイルの軸方向における前記長尺の導体部材の長さWに対する、前記空芯コイルの径方向における前記長尺の導体部材の長さtの比t/Wは、1以下であり、
前記空芯コイルの一方の端部に対向する前記コア部の一方面と、前記空芯コイルの他方の端部に対向する前記コア部の他方面とは、少なくともコイル端部を覆う領域において平行であり、
前記コア部の前記一方の面に対し、前記空芯コイルを形成する前記長尺の導体部材の周方向面が垂直であり、
前記空芯コイルの軸方向における前記長尺の導体部材の長さWに対する、前記空芯コイルの中心から外周までの半径Rとの比R/Wは、2~4であることを特徴とするリアクトル。 - 前記コア部の上面および底面の、前記空芯コイルの空芯部に面する部位には、前記空芯コイルへと突出する突起部が形成され、前記突起部は、前記空芯コイルの空芯部の半径をr、突起部のコイル端部に対向するコア面からの高さをa、突起部底面の半径をAとしたとき、
0<a≦W/3、且つ、r>√(A2+(W/2)2)
を満足するように形成されていることを特徴とする請求項1に記載のリアクトル。 - 前記比t/Wは、1/10以下であることを特徴とする請求項1に記載のリアクトル。
- 前記長さtは、前記リアクトルの駆動周波数に対する表皮厚み以下であることを特徴とする請求項1に記載のリアクトル。
- 前記空芯コイルの内周端における、前記コア部一方面と前記コア部他方面との間隔L1と、前記空芯コイルの外周端における、前記コア部一方面と前記コア部他方面との間隔L2との差(L1-L2)を、平均間隔L3で除算することにより算出される平行度((L1-L2)/L3)の絶対値が、1/50以下であることを特徴とする請求項1に記載のリアクトル。
- 前記長尺の導体部材は、導体層と絶縁層とをその厚み方向に積層することにより形成されており、
隣り合う前記導体層同士は、前記コア部の外部において、前記長尺の導体部材の長手方向における端部で絶縁層を挟むことなく接合されることを特徴とする請求項1に記載のリアクトル。 - 各導体層自体が、または各導体層からそれぞれ別々に口出しされたリード線が、前記コア部の外部に設けられたインダクタコアに互いに逆相になる様に経由されてから接合されることを特徴とする請求項6に記載のリアクトル。
- 前記空芯コイルは、絶縁材料で絶縁被覆された前記長尺の導体部材を巻回して形成される単層コイルを用いることによって、厚み方向に3個の前記単層コイルを積層して形成され、
3個の前記単層コイルのそれぞれの巻き始めは、電流線路の第1端子として互いから独立しているとともに、3個の前記単層コイルのそれぞれの巻き終わりは、電流線路の第2端子として互いから独立していることを特徴とする請求項1に記載のリアクトル。 - 前記空芯コイルの一方端部とこの一方端部に対向するコア部一方面との間、および前記空芯コイルの他方端部とこの他方端部に対向するコア部他方面との間に少なくとも配置される絶縁部材をさらに備えることを特徴とする請求項1に記載のリアクトル。
- 前記コア部は、複数のコア部材を備え、
前記コア部を取り付ける取り付け部材に前記コア部を固定する固定部材と、
前記複数のコア部材により前記コア部を形成するために、前記複数のコア部材を締結する締結部材と、をさらに備え、
前記コア部における前記固定部材の第1配設位置と前記締結部材の第2配設位置とは、互いに異なることを特徴とする請求項1に記載のリアクトル。 - 前記コア部は、磁気的に等方性を有すると共に、軟磁性体粉末を成形することにより形成されることを特徴とする請求項1に記載のリアクトル。
- 前記コア部は、磁気的に等方性を有するフェライトコアであることを特徴とする請求項1に記載のリアクトル。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10799937.7A EP2455953B1 (en) | 2009-07-16 | 2010-07-16 | Reactor |
US13/381,679 US8614617B2 (en) | 2009-07-16 | 2010-07-16 | Reactor |
KR1020127001087A KR101320170B1 (ko) | 2009-07-16 | 2010-07-16 | 리액터 |
CN201080029639.2A CN102483987B (zh) | 2009-07-16 | 2010-07-16 | 电抗器 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-167789 | 2009-07-16 | ||
JP2009167789 | 2009-07-16 | ||
JP2009211742 | 2009-09-14 | ||
JP2009-211742 | 2009-09-14 | ||
JP2010-110793 | 2010-05-13 | ||
JP2010110793A JP4654317B1 (ja) | 2009-07-16 | 2010-05-13 | リアクトル |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011007879A1 true WO2011007879A1 (ja) | 2011-01-20 |
Family
ID=43449489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/062114 WO2011007879A1 (ja) | 2009-07-16 | 2010-07-16 | リアクトル |
Country Status (6)
Country | Link |
---|---|
US (1) | US8614617B2 (ja) |
EP (1) | EP2455953B1 (ja) |
JP (1) | JP4654317B1 (ja) |
KR (1) | KR101320170B1 (ja) |
CN (1) | CN102483987B (ja) |
WO (1) | WO2011007879A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012137494A1 (ja) * | 2011-04-06 | 2012-10-11 | 株式会社神戸製鋼所 | リアクトルおよび該評価方法 |
WO2013011783A1 (ja) * | 2011-07-20 | 2013-01-24 | 住友電気工業株式会社 | リアクトル、コンバータ、及び電力変換装置 |
WO2013043065A3 (en) * | 2011-09-23 | 2014-05-22 | Eyales Bonifacio J | Electromagnetic energy-flux reactor |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5314172B2 (ja) * | 2011-07-05 | 2013-10-16 | 株式会社神戸製鋼所 | インバータ用筐体およびインバータ装置 |
JP3171315U (ja) * | 2011-07-25 | 2011-10-27 | スミダコーポレーション株式会社 | 磁性素子 |
JP6049240B2 (ja) * | 2011-07-26 | 2016-12-21 | Necトーキン株式会社 | コイル部品 |
JP2013089656A (ja) * | 2011-10-14 | 2013-05-13 | Kobe Steel Ltd | 巻線素子用コイルおよび巻線素子 |
JP2013149958A (ja) * | 2011-12-22 | 2013-08-01 | Mitsubishi Electric Corp | 電子機器 |
JP5940822B2 (ja) | 2012-02-03 | 2016-06-29 | 株式会社神戸製鋼所 | 巻線素子 |
JP2013165213A (ja) * | 2012-02-13 | 2013-08-22 | Kobe Steel Ltd | 巻線素子用固定金具および固定金具付き巻線素子 |
US9407131B2 (en) * | 2012-04-17 | 2016-08-02 | Bwxt Nuclear Operations Group, Inc. | Positional encoder and control rod position indicator for nuclear reactor using same |
US9406433B2 (en) | 2012-07-09 | 2016-08-02 | Trench Limited | Sound mitigation for air core reactors |
CN102810869B (zh) * | 2012-07-15 | 2014-08-06 | 湖北三环发展股份有限公司 | 一种基于盘型电抗器的statcom及控制方法 |
JP5789573B2 (ja) * | 2012-08-23 | 2015-10-07 | 株式会社神戸製鋼所 | ノイズ低減用巻線素子 |
EP2711942B1 (de) * | 2012-09-21 | 2016-12-28 | Siemens Aktiengesellschaft | Kühlung eines elektrischen Bauteils |
CN102945729B (zh) * | 2012-11-14 | 2015-06-17 | 南京理工大学 | 带冷却结构的高压脉冲电抗器 |
CN102945732B (zh) * | 2012-11-14 | 2015-09-30 | 南京理工大学 | 一种分布式脉冲功率源电抗器冷却方法及其系统 |
JP5807646B2 (ja) | 2013-01-15 | 2015-11-10 | トヨタ自動車株式会社 | 冷却器付きリアクトル |
US20140225706A1 (en) * | 2013-02-13 | 2014-08-14 | Qualcomm Incorporated | In substrate coupled inductor structure |
US20140300440A1 (en) * | 2013-04-05 | 2014-10-09 | Hamilton Sundstrand Corporation | Inductor gap spacer |
KR101510334B1 (ko) | 2013-12-03 | 2015-04-08 | 현대자동차 주식회사 | 변압기의 방열 구조 |
JP6205302B2 (ja) * | 2014-04-15 | 2017-09-27 | 株式会社神戸製鋼所 | ノイズ低減用巻線素子およびインバータ装置 |
JP2015207709A (ja) * | 2014-04-22 | 2015-11-19 | 新電元工業株式会社 | 磁性部品 |
JP6464582B2 (ja) * | 2014-07-08 | 2019-02-06 | 株式会社デンソー | 磁気回路部品 |
JP2016063158A (ja) * | 2014-09-19 | 2016-04-25 | Ntn株式会社 | インダクタ |
JP6235452B2 (ja) * | 2014-12-17 | 2017-11-22 | 株式会社神戸製鋼所 | リアクトル |
KR101719908B1 (ko) * | 2015-07-01 | 2017-03-24 | 삼성전기주식회사 | 코일 전자부품 및 그 제조방법 |
CN106093658B (zh) * | 2016-07-22 | 2018-08-28 | 中国科学院电工研究所 | 高压干式空心电抗器故障监测装置及监测方法 |
US11114232B2 (en) | 2017-09-12 | 2021-09-07 | Raycap IP Development Ltd | Inductor assemblies |
JP2020043300A (ja) * | 2018-09-13 | 2020-03-19 | Ntn株式会社 | 結合インダクタおよびスイッチング回路 |
KR102069450B1 (ko) * | 2018-11-02 | 2020-01-22 | (주)티에스이 | 인버터 냉장고에 적용 가능한 리액터 |
JP2020088127A (ja) * | 2018-11-22 | 2020-06-04 | ヤマハ株式会社 | 電気部品および電気機器 |
US20200312795A1 (en) * | 2019-03-29 | 2020-10-01 | Silego Technology Inc. | Packaging Substrate |
JP7263935B2 (ja) * | 2019-06-18 | 2023-04-25 | 株式会社デンソー | 電気装置 |
WO2021001748A1 (en) * | 2019-07-01 | 2021-01-07 | Eyales Bonifacio J | Electromagnetic energy-flux reactor |
DE102020114516A1 (de) * | 2020-05-29 | 2021-12-02 | Tdk Electronics Ag | Spulenelement |
KR102445348B1 (ko) | 2021-04-27 | 2022-09-20 | (주) 에스엠엔디 | 고주파전류와 누설전류를 측정하는 복합전류측정 센서장치 |
KR102498070B1 (ko) | 2021-04-27 | 2023-02-10 | (주) 에스엠엔디 | 외란의 영향을 차단하는 누설전류 측정센서 |
KR102465089B1 (ko) | 2021-04-27 | 2022-11-10 | (주) 에스엠엔디 | 복합전류측정 센서장치 |
KR102372134B1 (ko) * | 2021-07-23 | 2022-03-08 | 신건일 | 전자파 차폐필터 |
KR20230063479A (ko) | 2021-11-02 | 2023-05-09 | 주식회사 우성마그네트 | 철도 차량용 필터 리액터 및 그 제작방법 |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5027949A (ja) | 1973-06-07 | 1975-03-22 | ||
JPS5142956A (ja) | 1974-10-11 | 1976-04-12 | Meidensha Electric Mfg Co Ltd | |
JPS55133509A (en) * | 1979-04-06 | 1980-10-17 | Seikosha Co Ltd | Electromagnet device |
JPS60158616U (ja) * | 1984-03-30 | 1985-10-22 | 白石工業株式会社 | スリ−ブ付き絶縁ワツシヤ |
JPS60210817A (ja) * | 1984-04-04 | 1985-10-23 | Matsushita Electric Ind Co Ltd | 電源装置 |
JPH0534090Y2 (ja) * | 1986-08-01 | 1993-08-30 | ||
JPH0626222U (ja) * | 1992-09-02 | 1994-04-08 | ミネベア株式会社 | 薄形コイル |
JPH07288210A (ja) * | 1994-04-18 | 1995-10-31 | Tdk Corp | 表面実装用インダクタ |
JPH10125545A (ja) * | 1996-10-24 | 1998-05-15 | Matsushita Electric Ind Co Ltd | チョークコイル |
JPH118142A (ja) * | 1997-06-18 | 1999-01-12 | Tokin Corp | 電子部品 |
JP2001525610A (ja) * | 1997-11-28 | 2001-12-11 | エービービー エービー | リアクトル |
JP2001345224A (ja) | 2000-05-31 | 2001-12-14 | Toshiba Corp | 変圧器またはリアクトル |
JP2006222244A (ja) * | 2005-02-10 | 2006-08-24 | West Japan Railway Co | 空心リアクトル |
JP2007128951A (ja) | 2005-11-01 | 2007-05-24 | Hitachi Ferrite Electronics Ltd | リアクトル |
JP2007173263A (ja) * | 2005-12-19 | 2007-07-05 | Selco Co Ltd | エッジワイズ巻電磁コイル及び製造方法 |
JP2008042094A (ja) | 2006-08-09 | 2008-02-21 | Denso Corp | リアクトル |
JP2009059954A (ja) * | 2007-08-31 | 2009-03-19 | Hitachi Powdered Metals Co Ltd | ディスク型リアクトル |
JP2009167789A (ja) | 2008-01-15 | 2009-07-30 | Toho Ruigyo Yugenkoshi | アルミサッシ引き違い戸の開放制限装置 |
JP2009211742A (ja) | 2008-03-01 | 2009-09-17 | Toshiba Corp | 誤り訂正装置および誤り訂正方法 |
JP2010110793A (ja) | 2008-11-06 | 2010-05-20 | Nissan Motor Co Ltd | 線状溶接部応力緩和構造 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3068433A (en) * | 1954-04-15 | 1962-12-11 | Sylvania Electric Prod | Electromagnetic coils |
US3555670A (en) * | 1967-09-21 | 1971-01-19 | Westinghouse Electric Corp | Methods of constructing electrical transformers |
JPS60158616A (ja) * | 1984-01-27 | 1985-08-20 | Hitachi Ltd | 半導体装置の製造方法 |
US5315982A (en) * | 1990-05-12 | 1994-05-31 | Combustion Electromagnetics, Inc. | High efficiency, high output, compact CD ignition coil |
JPH0534090A (ja) | 1991-07-26 | 1993-02-09 | Nippondenso Co Ltd | 熱交換器 |
JPH0626222A (ja) | 1992-07-06 | 1994-02-01 | Kiyoshi Tanii | 二連二段式立体駐車装置 |
JPH06224056A (ja) * | 1993-01-26 | 1994-08-12 | Matsushita Electric Works Ltd | 平面形トランス |
JPH07201602A (ja) * | 1993-12-28 | 1995-08-04 | Toshiba Corp | 平面型磁気素子 |
WO1998018143A1 (fr) * | 1996-10-24 | 1998-04-30 | Matsushita Electric Industrial Co., Ltd. | Bobine d'arret |
JP4933830B2 (ja) * | 2006-05-09 | 2012-05-16 | スミダコーポレーション株式会社 | インダクタ |
JP5142956B2 (ja) | 2008-11-20 | 2013-02-13 | 日本電信電話株式会社 | トラフィック情報管理サーバ及びトラフィック情報管理方法 |
JP5027949B1 (ja) | 2011-03-29 | 2012-09-19 | パイオニア株式会社 | ヘッドアップディスプレイ及びその取付方法 |
-
2010
- 2010-05-13 JP JP2010110793A patent/JP4654317B1/ja active Active
- 2010-07-16 WO PCT/JP2010/062114 patent/WO2011007879A1/ja active Application Filing
- 2010-07-16 CN CN201080029639.2A patent/CN102483987B/zh active Active
- 2010-07-16 KR KR1020127001087A patent/KR101320170B1/ko active IP Right Grant
- 2010-07-16 EP EP10799937.7A patent/EP2455953B1/en active Active
- 2010-07-16 US US13/381,679 patent/US8614617B2/en active Active
Patent Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5027949A (ja) | 1973-06-07 | 1975-03-22 | ||
JPS5142956A (ja) | 1974-10-11 | 1976-04-12 | Meidensha Electric Mfg Co Ltd | |
JPS55133509A (en) * | 1979-04-06 | 1980-10-17 | Seikosha Co Ltd | Electromagnet device |
JPS60158616U (ja) * | 1984-03-30 | 1985-10-22 | 白石工業株式会社 | スリ−ブ付き絶縁ワツシヤ |
JPS60210817A (ja) * | 1984-04-04 | 1985-10-23 | Matsushita Electric Ind Co Ltd | 電源装置 |
JPH0534090Y2 (ja) * | 1986-08-01 | 1993-08-30 | ||
JPH0626222U (ja) * | 1992-09-02 | 1994-04-08 | ミネベア株式会社 | 薄形コイル |
JPH07288210A (ja) * | 1994-04-18 | 1995-10-31 | Tdk Corp | 表面実装用インダクタ |
JPH10125545A (ja) * | 1996-10-24 | 1998-05-15 | Matsushita Electric Ind Co Ltd | チョークコイル |
JPH118142A (ja) * | 1997-06-18 | 1999-01-12 | Tokin Corp | 電子部品 |
JP2001525610A (ja) * | 1997-11-28 | 2001-12-11 | エービービー エービー | リアクトル |
JP2001345224A (ja) | 2000-05-31 | 2001-12-14 | Toshiba Corp | 変圧器またはリアクトル |
JP2006222244A (ja) * | 2005-02-10 | 2006-08-24 | West Japan Railway Co | 空心リアクトル |
JP2007128951A (ja) | 2005-11-01 | 2007-05-24 | Hitachi Ferrite Electronics Ltd | リアクトル |
JP2007173263A (ja) * | 2005-12-19 | 2007-07-05 | Selco Co Ltd | エッジワイズ巻電磁コイル及び製造方法 |
JP2008042094A (ja) | 2006-08-09 | 2008-02-21 | Denso Corp | リアクトル |
JP2009059954A (ja) * | 2007-08-31 | 2009-03-19 | Hitachi Powdered Metals Co Ltd | ディスク型リアクトル |
JP2009167789A (ja) | 2008-01-15 | 2009-07-30 | Toho Ruigyo Yugenkoshi | アルミサッシ引き違い戸の開放制限装置 |
JP2009211742A (ja) | 2008-03-01 | 2009-09-17 | Toshiba Corp | 誤り訂正装置および誤り訂正方法 |
JP2010110793A (ja) | 2008-11-06 | 2010-05-20 | Nissan Motor Co Ltd | 線状溶接部応力緩和構造 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012137494A1 (ja) * | 2011-04-06 | 2012-10-11 | 株式会社神戸製鋼所 | リアクトルおよび該評価方法 |
JP2012222083A (ja) * | 2011-04-06 | 2012-11-12 | Kobe Steel Ltd | リアクトルおよびその設計方法 |
CN103403817A (zh) * | 2011-04-06 | 2013-11-20 | 株式会社神户制钢所 | 电抗器及其评价方法 |
CN103403817B (zh) * | 2011-04-06 | 2016-03-16 | 株式会社神户制钢所 | 电抗器及其设计方法 |
WO2013011783A1 (ja) * | 2011-07-20 | 2013-01-24 | 住友電気工業株式会社 | リアクトル、コンバータ、及び電力変換装置 |
WO2013043065A3 (en) * | 2011-09-23 | 2014-05-22 | Eyales Bonifacio J | Electromagnetic energy-flux reactor |
US10243405B2 (en) | 2011-09-23 | 2019-03-26 | Bonifacio J. Eyales | Electromagnetic energy-flux reactor |
US10992182B2 (en) | 2011-09-23 | 2021-04-27 | Bonifacio J. Eyales | Electromagnetic energy-flux reactor |
Also Published As
Publication number | Publication date |
---|---|
KR20120023187A (ko) | 2012-03-12 |
KR101320170B1 (ko) | 2013-10-23 |
JP2011082489A (ja) | 2011-04-21 |
US20120105190A1 (en) | 2012-05-03 |
EP2455953B1 (en) | 2018-05-02 |
EP2455953A4 (en) | 2015-04-15 |
CN102483987B (zh) | 2014-04-09 |
US8614617B2 (en) | 2013-12-24 |
JP4654317B1 (ja) | 2011-03-16 |
CN102483987A (zh) | 2012-05-30 |
EP2455953A1 (en) | 2012-05-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4654317B1 (ja) | リアクトル | |
JP5149976B2 (ja) | リアクトルおよびその設計方法 | |
JP5807646B2 (ja) | 冷却器付きリアクトル | |
WO2014103521A1 (ja) | リアクトル、コンバータ、および電力変換装置 | |
JP5754463B2 (ja) | リアクトル | |
JP5662255B2 (ja) | リアクトル | |
JP6195627B2 (ja) | 電磁誘導機器 | |
JP5314172B2 (ja) | インバータ用筐体およびインバータ装置 | |
JP2015116040A (ja) | 電力変換装置 | |
JP6635316B2 (ja) | リアクトル | |
JP5288325B2 (ja) | リアクトル集合体、及びコンバータ | |
WO2018016026A1 (ja) | モータ及び空気調和機 | |
JP5399317B2 (ja) | リアクトル | |
JP6681164B2 (ja) | リアクトル | |
JP5267802B2 (ja) | リアクトル集合体 | |
WO2018056048A1 (ja) | コイル、リアクトル、及びコイルの設計方法 | |
JP2014150171A (ja) | リアクトル、コンバータ、および電力変換装置 | |
JP2010171358A (ja) | リアクトル集合体 | |
JP5857906B2 (ja) | リアクトル及び電圧コンバータ | |
JP2020047721A (ja) | インダクタの設置構造 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080029639.2 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10799937 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13381679 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20127001087 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010799937 Country of ref document: EP |