CN106856140B - Common mode and differential mode integrated inductor with double magnetic cores in three-dimensional staggered arrangement - Google Patents
Common mode and differential mode integrated inductor with double magnetic cores in three-dimensional staggered arrangement Download PDFInfo
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- CN106856140B CN106856140B CN201510904157.1A CN201510904157A CN106856140B CN 106856140 B CN106856140 B CN 106856140B CN 201510904157 A CN201510904157 A CN 201510904157A CN 106856140 B CN106856140 B CN 106856140B
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Abstract
The invention provides a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner, wherein the common mode and differential mode integrated inductor comprises: a ring-shaped common mode magnetic core; a ring-shaped differential mode magnetic core, the ring-shaped common mode magnetic core and the ring-shaped differential mode magnetic core being concentric; the first common mode winding is wound on one side of the ring-shaped common mode magnetic core; the second common mode winding is symmetrical to the common mode winding and wound on the other side of the ring-shaped common mode magnetic core; and the first differential mode winding is wound on one side of the differential mode coil-shaped magnetic core. The invention overcomes the defect of small differential mode inductance value of the existing common mode differential mode integrated inductor, and can be applied to a large-current circuit.
Description
Technical Field
The invention relates to a magnetic element integration technology in the technical field of power electronics, in particular to a common-mode and differential-mode integrated inductor in a power grid rectifying circuit of a household appliance, and specifically relates to a common-mode and differential-mode integrated inductor with double magnetic cores in a three-dimensional staggered arrangement.
Background
In the magnetic integration technology, two or more Discrete Devices (DM) in a converter, such as inductors, transformers, and the like, are wound on a pair of magnetic cores and structurally integrated together, so that the size and the weight of the magnetic devices can be reduced, current ripples can be reduced, the loss of the magnetic devices can be reduced, the dynamic performance of a power supply can be improved, and the magnetic integration technology has important significance for improving the performance and the power density of the power supply.
In order to reduce the cost, volume and weight of magnetic elements in power electronic circuits, magnetic integration schemes are broadly classified into the following categories, namely, common mode and differential mode electromagnetic interference (EMI) inductor integration, two, power transformer and inductor integration, such as the integration of a logic link control (LL C) resonant converter transformer and resonant inductor, and three, and more branch interleaved parallel converters power inductor integration.
However, the first type of magnetic integration scheme is limited to common mode inductance and differential mode inductance in EMI circuits, and the value of the differential mode inductance that can be integrated is limited, typically only a few tens of microhenries (henries for short). While the second and third types of magnetic integration schemes are limited to the integration of magnetic elements in power circuits. Most of the magnetic integration of the scheme is a planar structure, a large space needs to be occupied, and the space utilization rate of the product is low.
Therefore, a magnetic integration method is needed by those skilled in the art to break through the limitation that the conventional common-mode and differential-mode integration can only be performed inside the EMI circuit, so as to integrate the common-mode inductor in the EMI circuit and the differential-mode inductor in the power circuit, and reduce the volume, weight and cost of the magnetic component of the whole system.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a common mode and differential mode integrated inductor with two magnetic cores arranged in a three-dimensional staggered manner, so as to solve the problem that the common mode and differential mode integration can only be performed inside an EMI circuit in the prior art.
In order to solve the above technical problem, an embodiment of the present invention provides a common mode and differential mode integrated inductor with dual magnetic cores in a three-dimensional staggered arrangement, including: a ring-shaped common mode magnetic core; a ring-shaped differential mode magnetic core, the ring-shaped common mode magnetic core and the ring-shaped differential mode magnetic core being concentric; the first common mode winding is wound on one side of the ring-shaped common mode magnetic core; the second common mode winding is symmetrical to the first common mode winding and is wound on the other side of the ring-shaped common mode magnetic core; and the first differential mode winding is wound on one side of the annular differential mode magnetic core.
Based on the above embodiments of the present invention, it can be known that the common mode and differential mode integrated inductor with the double magnetic cores arranged in a three-dimensional staggered manner has at least the following beneficial effects: the common-mode inductor and the differential-mode inductor of the power circuit are integrated, so that the total volume of the magnetic element is reduced, and the power density of the circuit is increased; the mutual sharing of the magnetic core and the winding of the common-mode inductor and the differential-mode inductor is realized, and the cost is reduced; the defect that the differential mode inductance value of the traditional common mode differential mode integrated inductor is small is overcome, so that the common mode differential mode integrated inductor is wider in application occasions; the method breaks through the limitation that the common mode and differential mode integration can only be carried out inside an EMI circuit in the prior art, realizes the integration of the common mode inductor in the EMI circuit and the differential mode inductor in a power circuit, reduces the volume, the weight and the cost of a magnetic element of the whole system, has high product space utilization rate, and promotes the development of the technical field of power electronic application.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a first embodiment of a common mode and differential mode integrated inductor with dual magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of a common mode and differential mode integrated inductor with dual magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third embodiment of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a fourth example of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fifth example of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a sixth example of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a seventh embodiment of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an eighth embodiment of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a ninth embodiment of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of an example ten of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention;
fig. 11 is a circuit diagram of an embodiment of a common mode and differential mode integrated inductor with dual magnetic cores arranged in a three-dimensional staggered manner according to the present invention.
Detailed Description
For the purpose of promoting a clear understanding of the objects, aspects and advantages of the embodiments of the invention, reference will now be made to the drawings and detailed description, wherein there are shown in the drawings and described in detail, various modifications of the embodiments described herein, and other embodiments of the invention will be apparent to those skilled in the art.
The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.
As used herein, the terms "first," "second," …, etc., do not denote any order or sequence, nor are they used to limit the present invention, but rather are used to distinguish one element from another or from another element or operation described in the same technical language.
With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
As used herein, "and/or" includes any and all combinations of the described items.
As used herein, the terms "substantially", "about" and the like are used to modify any slight variation in quantity or error that does not alter the nature of the variation. Generally, the range of slight variations or errors modified by such terms may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the aforementioned values can be adjusted according to actual needs, and are not limited thereto.
Certain words used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present application.
Fig. 1 is a schematic structural diagram of a first embodiment of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention, and as shown in fig. 1, the common mode inductive magnetic core and the differential mode inductive magnetic core are overlapped with each other, so that it is determined that the common mode inductive magnetic core is located inside the differential mode inductive magnetic core or the differential mode inductive magnetic core is located inside the common mode inductive magnetic core, thereby forming the common mode and differential mode integrated inductor.
In the embodiment of the figure, the common mode and differential mode integrated inductor comprises a ring-shaped common mode magnetic core 100, a ring-shaped differential mode magnetic core 200, a first common mode winding 300, a second common mode winding 400 and a first differential mode winding 500, wherein the ring-shaped common mode magnetic core 100 is concentric with the ring-shaped differential mode magnetic core 200; the first common mode winding 300 is wound on one side of the ring-shaped common mode magnetic core 100; the second common mode winding 400 is symmetrical to the common mode winding 300, that is, in a specific circuit application, the number of turns of the second common mode winding 400 is the same as that of the common mode winding 300, the magnetic flux generated by the second common mode winding 400 is equal to that of the common mode winding 300, and the directions are opposite, and the second common mode winding 400 is wound on the other side of the ring-shaped common mode core 100; the first differential-mode winding 500 is wound on one side of the differential-mode toroidal core 200.
Referring to fig. 1, the shape of the ring-shaped common mode magnetic core 100 may be a circle, a square, a diamond, or the like; the shape of the ring-shaped differential mode magnetic core 200 can be circular, square, rhombic and the like, that is, when the shape of the ring-shaped common mode magnetic core 100 is circular, the shape of the ring-shaped differential mode magnetic core 200 can be circular, square and the like; when the shape of the annular differential mode core 200 is circular, the shape of the annular common mode core 100 may be circular, square, or other annular shape. The differential mode winding is wound on the ring-shaped differential mode magnetic core 200, so that the differential mode inductance value in the ring-shaped differential mode magnetic core 200 can be increased, the differential mode interference can be well inhibited, and the common mode differential mode integrated inductor can be applied to a large-current circuit. An air gap 700 is left between the ring-shaped common mode magnetic core 100 and the ring-shaped differential mode magnetic core 200, namely two air gaps 700 are arranged at two ends of the ring-shaped common mode magnetic core 100 which are closest to the ring-shaped differential mode magnetic core 200, so that the ring-shaped common mode magnetic core 100 is close to but not in contact with the ring-shaped differential mode magnetic core 200, the magnetic leakage of the ring-shaped common mode magnetic core 100 enters the ring-shaped differential mode magnetic core 200 through the air gaps 700 and then returns to the ring-shaped common mode magnetic core 100 through the air gaps 700 at the other ends to form a closed magnetic circuit loop, and the influence of the leakage magnetic flux of the ring-shaped common mode magnetic. The invention integrates the common mode inductor and the differential mode inductor, reduces the total volume of the magnetic element, increases the power density of the circuit because the differential mode magnetic core is also provided with the winding, overcomes the defect of smaller differential mode inductance value of the traditional common mode differential mode integrated inductor, and makes the applicable application occasions wider; the method breaks through the limitation that the common mode and differential mode integration can only be carried out inside an EMI circuit in the prior art, realizes the integration of the common mode inductor in the EMI circuit and the differential mode inductor in a power circuit, reduces the volume, the weight and the cost of a magnetic element of the whole system, has high product space utilization rate, and promotes the development of the technical field of power electronic application.
Fig. 2 is a schematic structural diagram of a second embodiment of a common-mode and differential-mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to a specific embodiment of the present invention, and as shown in fig. 2, a differential-mode winding is further wound on the other side of a ring-shaped differential-mode magnetic core, so that a differential-mode inductance value in the ring-shaped differential-mode magnetic core 200 is further increased, and differential-mode interference is better suppressed.
In the embodiment of the figure, the common mode and differential mode integrated inductor further comprises a second differential mode winding 600, wherein the second differential mode winding 600 is wound in the opposite direction to the first differential mode winding 500, and the second differential mode winding 600 is wound on the other side of the differential mode coil-shaped magnetic core 200.
Referring to fig. 2, the winding direction of the second differential mode winding 600 is opposite to that of the first differential mode winding 500, so that the direction of the magnetic flux generated by the second differential mode winding 600 is the same as that of the magnetic flux generated by the first differential mode winding 500 in a specific application process, that is, strong magnetic flux is generated inside the differential mode coil-shaped magnetic core 200, and thus, the differential mode interference can be well inhibited.
Referring to fig. 2, in an embodiment of the present invention, when the common mode core is outside and the differential mode core is inside, the common mode windings are disposed on two sides of the common mode core, and the windings on the two sides are symmetrical, that is, the winding directions of the common mode windings on two sides of the common mode core are opposite and the number of turns of the windings is the same; the two sides of the differential mode magnetic core are provided with differential mode windings, and the winding directions of the two differential mode windings are opposite; the common mode winding on one side is connected with the differential mode winding on one side, the common mode winding on the other side is connected with the differential mode winding on the other side, and a load is connected between the differential mode winding or the common mode winding.
In the embodiment of the figure, the ring-shaped common mode magnetic core 100 is outside the ring-shaped differential mode magnetic core 200, the first common mode winding 300 is connected with the first differential mode winding 500, and the first differential mode winding 500 is connected with the second differential mode winding 600. In a specific circuit application, a load can be connected between the second differential mode winding 600 and the second common mode winding 400, the first common mode winding 300 and the second common mode winding 400 are connected with a power supply, the first common mode winding 300 and the second common mode winding 400 can suppress common mode interference in a circuit, and the first differential mode winding 500 and the second differential mode winding 600 can suppress differential mode interference in the circuit.
Referring to fig. 2, in the specific embodiment of the drawing, the common mode core and the differential mode core are both circular, the centers of the two circles are overlapped, the windings are wound on two sides of the common mode core away from the plane of the differential mode core, the winding directions of the two windings are opposite, the number of turns of the two windings is the same, the directions of magnetic fluxes formed by the two windings are opposite, so that common mode interference in a circuit can be suppressed, and the differential mode windings are wound on two sides of the differential mode core away from the plane of the common mode core, so that leakage flux of the common mode core returns to the common mode core through the differential mode core, and the differential mode windings are wound on two sides of the differential mode core, so that the differential mode inductance value is increased, interference of the leakage flux of the common mode core to other circuit elements is reduced, and the common mode and differential mode integrated inductor.
Fig. 3 is a schematic structural diagram of a third embodiment of a common-mode and differential-mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to a specific embodiment of the present invention, as shown in fig. 3, when the common-mode magnetic core is outside and the differential-mode magnetic core is inside, common-mode windings are arranged on two sides of the common-mode magnetic core, and the windings on the two sides are wound symmetrically, that is, the winding directions of the common-mode windings on the two sides of the common-mode magnetic core are opposite and the number; the two sides of the differential mode magnetic core are provided with differential mode windings, and the winding directions of the two differential mode windings are opposite; and the common mode winding on one side is connected with the differential mode winding on one side, the differential mode magnetic cores on two sides are connected, and a load is connected between the residual common mode winding and the differential mode winding.
In an embodiment of the present invention, the ring-shaped differential mode magnetic core 200 is located inside the ring-shaped common mode magnetic core 100, the first common mode winding 300 is connected to the first differential mode winding 500, and the second common mode winding 400 is connected to the second differential mode winding 600.
Referring to fig. 3, in the specific embodiment of the drawing, the common mode core and the differential mode core are both circular, the centers of the two circles are overlapped, the common mode windings are wound on two sides of the common mode core away from the plane of the differential mode core, the two common mode windings are symmetrical, that is, the two common mode windings are opposite in direction and same in turn number, and the magnetic fluxes formed by the two windings are opposite in direction, so that the common mode interference in the circuit can be suppressed, and the differential mode windings are wound on two sides of the differential mode core away from the plane of the common mode core, so that the differential mode inductance value is increased.
Fig. 4 is a schematic structural diagram of a fourth example of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention, as shown in fig. 4, the differential mode magnetic cores are located on the outer sides, the common mode magnetic cores are located on the inner sides, the common mode and differential mode integrated inductor has a three-dimensional structure, the common mode windings are located on two sides of the common mode magnetic cores, and the windings of the common mode windings on the two sides are symmetrical, that is, the winding directions of the common mode windings on the two sides of; the two sides of the differential mode magnetic core are provided with differential mode windings, and the winding directions of the two differential mode windings are opposite; the common mode winding on one side is connected with the differential mode winding on one side, the common mode winding on the other side is connected with the differential mode winding on the other side, and a load is connected between the two common mode windings or the two differential mode windings.
In the embodiment of the figure, the ring-shaped differential mode magnetic core 200 is located inside the ring-shaped common mode magnetic core 100, the first common mode winding 300 is connected to the first differential mode winding 500, and the second common mode winding 400 is connected to the second differential mode winding 600.
Referring to fig. 4, the common mode magnetic core and the differential mode magnetic core are both circular, the centers of the two circles are coincident, the common mode windings are wound on the two sides of the common mode magnetic core far away from the plane of the differential mode magnetic core, the two common mode windings are symmetrical, namely the two common mode windings are opposite in direction and same in number of turns, the directions of magnetic fluxes formed by the two windings are opposite, so that common mode interference in a circuit can be suppressed, and the differential mode windings are wound on the two sides of the differential mode magnetic core far away from the plane of the common mode magnetic core, so that the differential mode inductance value is increased.
Fig. 5 is a schematic structural diagram of a fifth embodiment of a common-mode and differential-mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to a specific embodiment of the present invention, as shown in fig. 5, a differential-mode winding is wound on only one side of a differential-mode magnetic core, and the differential-mode winding is connected to the common-mode winding on any one side, so that a differential-mode inductance value in the differential-mode magnetic core is increased, and meanwhile, a production cost is reduced on the premise that the differential-mode inductance value is satisfied.
In an embodiment of the present invention, the ring-shaped common mode magnetic core 100 is inside the ring-shaped differential mode magnetic core 200, and the first common mode winding 300 is connected to the first differential mode winding 500; alternatively, the second common mode winding 400 is connected to the first differential mode winding 500.
Referring to fig. 1 and 5, a schematic diagram of the common mode core on the outside and the differential mode core on the inside is shown, only one side of the differential mode core is wound with the differential mode winding, two sides of the common mode core far away from the plane of the differential mode core are wound with the common mode winding, the two common mode windings are symmetrical, that is, the two common mode windings are opposite in direction and same in turn number, and the magnetic fluxes formed by the two windings are opposite in direction, so that the common mode interference in the circuit can be suppressed.
Fig. 6 is a schematic structural diagram of a sixth embodiment of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention, fig. 7 is a schematic structural diagram of a seventh embodiment of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention, as shown in fig. 6 and 7, when the common mode magnetic cores are on the inner side and the differential mode magnetic cores are on the outer side, only one side of the differential mode magnetic cores is wound with the differential mode windings, two sides of the common mode magnetic cores far from a plane of the differential mode magnetic cores are wound with the common mode windings, the two common mode windings are symmetrical, that is, the two common mode windings are opposite in direction and have the same number of turns, and the magnetic fluxes formed by the two windings are opposite in direction, so that common mode interference in a circuit can be suppressed, one side of the differential mode magnetic cores far from the plane, therefore, the leakage magnetic flux of the common mode magnetic core returns to the common mode magnetic core through the differential mode magnetic core, the interference of the leakage magnetic flux of the common mode magnetic core to other circuit elements is reduced, and the common mode differential mode integrated inductor can be suitable for a large-current circuit.
In a specific embodiment of the present invention, a plane where the annular common mode magnetic core 100 is located is perpendicular to a plane where the annular differential mode magnetic core 200 is located, so that the mutual influence between the differential mode winding and the common mode winding is small, the common mode winding inductor and the differential mode winding inductor magnetic core are shared, an extra differential mode inductance is provided, and the differential mode inductance value of the common mode integrated inductor is increased.
Fig. 8 is a schematic structural diagram of an eighth embodiment of a common-mode and differential-mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner, as shown in fig. 8, an air gap 700 is left between the ring-shaped common-mode magnetic core 100 and the ring-shaped differential-mode magnetic core 200, that is, two air gaps 700 (one at each of the top and bottom) are arranged at two ends closest to each other between the ring-shaped common-mode magnetic core 100 and the ring-shaped differential-mode magnetic core 200, so that the ring-shaped common-mode magnetic core 100 and the ring-shaped differential-mode magnetic core 200 are close to each other but not in contact, magnetic leakage of the ring-shaped common-mode magnetic core 100 enters the ring-shaped differential-mode magnetic core 200 through the air gaps 700, and then returns to the ring-shaped common-mode magnetic core 100 through the air gap 700 at the other end.
Fig. 9 is a schematic structural diagram of a ninth example of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention, and fig. 10 is a schematic structural diagram of a tenth example of a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner according to an embodiment of the present invention; as shown in fig. 9 and 10, in fig. 9, the common mode core and the differential mode core are both square structures, and the plane where the common mode core is located and the plane where the differential mode core is located are perpendicular to each other; in fig. 10, the common mode core has a square structure, and the differential mode core has a circular structure, and the plane of the common mode core is perpendicular to the plane of the differential mode core.
Fig. 11 is a circuit diagram of an embodiment of the invention, which provides an application of a common mode and differential mode integrated inductor with dual magnetic cores in a three-dimensional staggered arrangement, as shown in fig. 11, for an application example of the common mode and differential mode integrated inductor in a household air conditioner, a common mode inductor in an electromagnetic interference (EMI) circuit and a differential mode inductor in a power circuit are disposed in the circuit, the common mode and differential mode integrated inductor shown in fig. 1-10 is integrated with the common mode and differential mode integrated inductor, the common mode inductor is equivalent to the common mode magnetic core and the winding thereof in fig. 1-10, the differential mode inductor is equivalent to the differential mode magnetic core and the winding thereof in fig. 1-10, the common mode and differential mode integrated inductor of the invention overcomes the disadvantage of small differential mode inductance value of the common mode and differential mode integrated inductor of the traditional EMI circuit, the common-mode and differential-mode integrated inductor can play a role in more and more power electronic application fields, particularly in the household appliance application field.
The invention also has at least the following beneficial effects:
the invention integrates the common mode inductor and the differential mode inductor of the power circuit, reduces the total volume of the magnetic element and increases the power density of the circuit; the mutual sharing of the magnetic core and the winding of the common-mode inductor and the differential-mode inductor is realized, and the cost is reduced; the defect that the differential mode inductance value of the traditional common mode differential mode integrated inductor is small is overcome, so that the common mode differential mode integrated inductor is wider in application occasions; the common-mode and differential-mode integrated inductor can play a role in more and more power electronic application fields, particularly in the household appliance application field; the differential mode inductance value of the integrated common mode differential mode EMI integrated inductor is increased more than that of the traditional common mode differential mode EMI integrated inductor, so that the limitation that the common mode differential mode integration can only be carried out inside an EMI circuit in the traditional mode is broken through, the integration of the common mode inductor in the EMI circuit and the differential mode inductor in a power circuit is realized, and the volume, the weight and the cost of a magnetic element of the whole system are reduced.
The invention provides a common mode and differential mode integrated inductor with double magnetic cores arranged in a three-dimensional staggered manner, wherein a plane where a common mode iron core is located and a plane where a differential mode iron core is located are mutually perpendicular and crossed but are not in complete contact, common mode windings are respectively wound on two sides of the common mode iron core, differential mode windings are wound on two sides of the differential mode iron core, the common mode windings and the differential mode windings are mutually shared, the number of turns of the two common mode windings is the same, the number of turns of the two differential mode windings is the same, the directions of magnetic fluxes formed by the two common mode windings are opposite, and the directions of the magnetic fluxes formed by the two differential mode windings are the same, so that the common mode inductor and the differential mode inductor are integrated; the mutual sharing of the magnetic core and the winding of the common-mode inductor and the differential-mode inductor is realized, and the cost is reduced; the defect that the differential mode inductance value of the traditional common mode differential mode integrated inductor is small is overcome, so that the common mode differential mode integrated inductor is wider in application occasions; the method breaks through the limitation that the common mode and differential mode integration can only be carried out inside an EMI circuit in the prior art, realizes the integration of the common mode inductor in the EMI circuit and the differential mode inductor in a power circuit, reduces the volume, the weight and the cost of a magnetic element of the whole system, has high product space utilization rate, and promotes the development of the technical field of power electronic application.
The foregoing is merely an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.
Claims (10)
1. A kind of double magnetic core presents the integrated inductance of common mode and differential mode that the stereoscopic staggered arrangement, characterized by that, the integrated inductance of common mode and differential mode includes:
a ring-shaped common mode core (100);
a toroidal differential mode magnetic core (200) concentric with the toroidal common mode magnetic core (100);
a first common mode winding (300) wound on one side of the ring-shaped common mode core (100);
the second common mode winding (400) is symmetrical to the first common mode winding (300) and is wound on the other side of the ring-shaped common mode magnetic core (100); and
a first differential mode winding (500) wound on one side of the toroidal differential mode magnetic core (200).
2. The integrated inductor of claim 1, further comprising:
and a second differential mode winding (600) wound on the other side of the ring-shaped differential mode magnetic core (200) in a direction opposite to the winding direction of the first differential mode winding (500).
3. The integrated inductor with the double magnetic cores in the common mode and the differential mode in the staggered arrangement in the three-dimensional manner according to claim 2, wherein the ring-shaped differential mode magnetic core (200) is arranged inside the ring-shaped common mode magnetic core (100), the first common mode winding (300) is connected with the first differential mode winding (500), and the first differential mode winding (500) is connected with the second differential mode winding (600).
4. The integrated inductor with the double magnetic cores in the common mode and the differential mode in the staggered arrangement in the three-dimensional manner according to claim 2, wherein the ring-shaped differential mode magnetic core (200) is arranged inside the ring-shaped common mode magnetic core (100), the first common mode winding (300) is connected with the first differential mode winding (500), and the second common mode winding (400) is connected with the second differential mode winding (600).
5. The integrated inductor with the double magnetic cores in the form of a spatially staggered common mode and differential mode according to claim 2, wherein the ring-shaped common mode magnetic core (100) is inside the ring-shaped differential mode magnetic core (200), the first common mode winding (300) is connected to the first differential mode winding (500), and the second common mode winding (400) is connected to the second differential mode winding (600).
6. The integrated inductor with common mode and differential mode in the form of three-dimensional staggered arrangement of the double magnetic cores according to claim 1, wherein the first common mode winding (300) is connected with the first differential mode winding (500); alternatively, the second common mode winding (400) is connected to the first differential mode winding (500).
7. The integrated inductor with double magnetic cores in a staggered manner in a common mode and a differential mode according to claim 1, wherein the plane of the ring-shaped common mode magnetic core (100) is perpendicular to the plane of the ring-shaped differential mode magnetic core (200).
8. A common mode and differential mode integrated inductor with staggered double cores according to claim 1, characterized in that an air gap (700) is left between the ring-shaped common mode core (100) and the ring-shaped differential mode core (200).
9. A common mode and differential mode integrated inductor with staggered double cores according to claim 1, characterized in that the shape of the coil-shaped common mode core (100) is circular, diamond-shaped or square.
10. A common mode and differential mode integrated inductor with staggered double cores according to claim 1, characterized in that the shape of the ring-shaped differential mode core (200) is circular, rhombic or square.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510904157.1A CN106856140B (en) | 2015-12-09 | 2015-12-09 | Common mode and differential mode integrated inductor with double magnetic cores in three-dimensional staggered arrangement |
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| CN201510904157.1A CN106856140B (en) | 2015-12-09 | 2015-12-09 | Common mode and differential mode integrated inductor with double magnetic cores in three-dimensional staggered arrangement |
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| CN106856140A CN106856140A (en) | 2017-06-16 |
| CN106856140B true CN106856140B (en) | 2020-08-04 |
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| CN107359784B (en) * | 2017-09-05 | 2019-11-08 | 贵州航天林泉电机有限公司 | A kind of the input EMC filter and production method of high voltage direct current input power supply |
| CN110148512B (en) * | 2019-05-23 | 2021-08-06 | 合肥工业大学 | Three-magnetic-core decoupling magnetic integrated transformer |
| CN111157777B (en) * | 2020-01-14 | 2020-11-27 | 清华大学 | Design method of double-magnetic-core differential leakage current measurement sensor |
| CN111157776A (en) * | 2020-01-14 | 2020-05-15 | 清华大学 | Double-magnetic-core sensor for insulation leakage current of power equipment |
| CN111415810B (en) * | 2020-04-17 | 2021-08-17 | 北京中科宇航技术有限公司 | Differential-common mode integrated choke coil |
| CN114974833B (en) * | 2022-07-27 | 2022-10-28 | 四川虹锐电工有限责任公司 | Differential mode and common mode magnetic shielding integrated choke coil |
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