A three-phase differential common-mode inductor

Abstract

The utility model relates to the technical field of electrical equipment, and specifically relates to a three -phase difference common mode inductance, including first winding wire, second winding wire, third winding wire, end fixed disc, three equal division magnetic core block and circular ring magnetic core, the operator utilizes the magnetic core block fixed lid and places in the circular ring magnetic core middle part after three equal division magnetic core block is evenly divided into three, then utilizes the end fixed disc to fix the end and can carry out cable connection, utilizes the magnetic core block fixed lid to realize the clearance adjustment of three equal division magnetic core block and circular ring magnetic core, effectively adapt to different leakage inductance demand, effectively reduce the volume and weight of converter, have good practicality and economy, be beneficial to the popularization and use of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical equipment, specifically to a three-phase differential common-mode inductor. Background Technology

[0002] In existing three-phase filter circuits, common-mode inductors and differential-mode inductors are both effective components for suppressing electromagnetic interference and are widely used in various filters, switching power supplies and other products. However, common-mode inductors are used to suppress common-mode interference, while differential-mode inductors are used to suppress differential-mode interference. Both are relatively important filter inductors.

[0003] Three-phase common-mode inductors and three-phase differential-mode inductors are independent inductors, which have problems such as large size, high cost, and difficulty in assembly. The main purpose of this utility model is to provide a three-phase differential-mode integrated inductor and electronic device, which aims to integrate differential-mode inductors and common-mode inductors to reduce space occupation and lower costs. Utility Model Content

[0004] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a three-phase differential common-mode integrated inductor that has a small size, is easy to assemble, and can control leakage inductance.

[0005] The technical solution adopted by this utility model is as follows: a three-phase differential common-mode inductor, including a circular magnetic core, wherein three sets of three equally divided magnetic core blocks are provided at the center of the circular magnetic core, the three sets of three equally divided magnetic core blocks present an axisymmetric structure with radial obtuse angles, and a first winding line, a second winding line, and a third winding line are sequentially provided between the angle gap between two adjacent sets of three equally divided magnetic core blocks and the circular magnetic core.

[0006] In one embodiment, the first winding wire, the second winding wire, and the third winding wire are copper conduits; or copper flat wires.

[0007] In one embodiment, the three-part magnetic core block has a rectangular cubic structure.

[0008] In one embodiment, an end fixing plate is provided on one side of the annular magnetic core, and the ends of the first winding line, the second winding line and the third winding line pass through the middle of the end fixing plate.

[0009] In one embodiment, one end of each of the three sets of three equally divided magnetic core blocks abuts against each other, and the other end has a gap with the circular magnetic core; or one end of each of the three sets of three equally divided magnetic core blocks does not abut against each other, and the other end has a gap with the circular magnetic core; or one end of each of the three sets of three equally divided magnetic core blocks abuts against each other, and the other end abuts against the circular magnetic core; or one end of each of the three sets of three equally divided magnetic core blocks does not abut against each other, and the other end abuts against the circular magnetic core.

[0010] In one embodiment, the three sets of three-part magnetic core blocks are provided with magnetic core block fixing covers on both sides of the annular magnetic core. The magnetic core block fixing covers are used to fix the three sets of three-part magnetic core blocks and the relative positions of the three-part magnetic core blocks and the annular magnetic core.

[0011] In one embodiment, the annular magnetic core is provided with a core fixing cover on both sides of the axis, and the core fixing cover is used to isolate the first winding wire, the second winding wire and the third winding wire from adhering to the annular magnetic core.

[0012] In one embodiment, the magnetic core fixing cover and the magnetic core block fixing cover are made of insulating material.

[0013] The beneficial effects of this utility model are as follows: It provides a three-phase differential common-mode integrated inductor with a small size and simple assembly, which realizes the control of leakage inductance. The specific beneficial effects are as follows:

[0014] 1. Differential-mode inductors and common-mode inductors are integrated into a single magnetic component, reducing the size and weight of the inductor. The modular structure adopts a splicing installation method, reducing assembly costs.

[0015] 2. Adjust the leakage inductance by adjusting the distance between the circular magnetic core and the three-part magnetic core block to achieve the characteristics of a differential mode inductor.

[0016] 3. By adjusting the material of the magnetic ring, the frequency impedance characteristics of the differential mode inductor can be achieved. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a partial exploded three-dimensional structural diagram of the present invention.

[0020] Figure descriptions: 1. First winding wire; 2. Second winding wire; 3. Third winding wire; 4. End fixing plate; 5. Core fixing cover; 6. Circular magnetic core; 7. Three-part magnetic core block; 71. Core block fixing cover. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] The following is combined Figure 1-2 This invention describes a specific embodiment of a three-phase differential common-mode inductor, characterized by: a circular magnetic core 6, with three sets of three equally divided magnetic core blocks 7 located at the center of the circular magnetic core 6. The three sets of three equally divided magnetic core blocks 7 exhibit an axially symmetrical structure with radial obtuse angles, resembling a triangular structure. Between the angle gap between adjacent sets of three equally divided magnetic core blocks 7 and the circular magnetic core 6, a first winding 1, a second winding 2, and a third winding 3 wound around the circular magnetic core 6 are sequentially arranged. Each set of windings around the circular magnetic core 6 forms a differential-mode inductor, which is spaced apart from the three equally divided magnetic core blocks 7 in the center. By utilizing the fact that the first winding 1, the second winding 2, and the third winding 3 have the same winding direction, and one of their positive and negative terminals is opposite to the other two sets, a common-mode inductor is formed. The operator can then use the device through a connection circuit with different cables connected in series.

[0024] Beneficially, the first winding wire 1, the second winding wire 2, and the third winding wire 3 are copper tubular wires or copper flat wires; the choice can be made freely according to the actual winding method. The attached diagram shows copper flat wires.

[0025] Beneficially, the three-part magnetic core block 7 presents a rectangular cubic structure, which can maximize the effect of proportional leakage inductance adjustment.

[0026] Beneficially, the circular magnetic core 6 has an end fixing plate 4 on one side, and the ends of the first winding wire 1, the second winding wire 2 and the third winding wire 3 pass through the middle of the end fixing plate 4, which facilitates the connection with the wires and cables.

[0027] Beneficially, one end of the three sets of three equally divided magnetic core blocks 7 abuts against each other, and the other end is left with a gap between it and the circular magnetic core 6; or one end of the three sets of three equally divided magnetic core blocks 7 does not abut against each other, and the other end is left with a gap between it and the circular magnetic core 6; or one end of the three sets of three equally divided magnetic core blocks 7 abuts against each other, and the other end is left with a gap between it and the circular magnetic core 6; or one end of the three sets of three equally divided magnetic core blocks 7 does not abut against each other, and the other end is left with a gap between it and the circular magnetic core 6. The gap is adjustable for leakage inductance and can be freely adjusted according to actual conditions. Beneficially, the three sets of three-part magnetic core blocks 7 are provided with magnetic core block fixing covers 71 on both sides of the circular magnetic core 6. The magnetic core block fixing covers 71 are used to fix the three sets of three-part magnetic core blocks 7 and the relative position of the three-part magnetic core blocks 7 and the circular magnetic core 6. The attached diagram shows that the magnetic core block fixing covers 71 adopt a surface-wrapping form, allowing adjustment of the relative position of the three-part magnetic core blocks 7 within the circular magnetic core 6 to be achieved using the magnetic core block fixing covers 71.

[0028] Beneficially, the annular magnetic core 6 is provided with magnetic core fixing covers 5 on both sides of the axis. The magnetic core fixing covers 5 are used to isolate the first winding wire 1, the second winding wire 2 and the third winding wire 3 from the annular magnetic core 6. At the same time, the magnetic core fixing covers 5 and the magnetic core block fixing covers 71 are made of insulating material.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A three-phase differential common-mode inductor, characterized in that: The ring core (6) includes a circular magnetic core (6). Three sets of three-part magnetic core blocks (7) are provided at the center of the ring core (6). The three sets of three-part magnetic core blocks (7) present an axisymmetric structure with a radial obtuse angle. Between the angle gap between two adjacent sets of three-part magnetic core blocks (7) and the ring core (6), a first winding line (1), a second winding line (2), and a third winding line (3) of the ring core (6) are provided in sequence.

2. The three-phase differential common-mode inductor according to claim 1, characterized in that: The first winding wire (1), the second winding wire (2) and the third winding wire (3) are copper pipes or copper flat wires.

3. The three-phase differential common-mode inductor according to claim 1, characterized in that: The three-part magnetic core block (7) has a rectangular cubic structure.

4. The three-phase differential common-mode inductor according to claim 1 or 2, characterized in that: The circular magnetic core (6) has an end fixing plate (4) on one side, and the ends of the first winding line (1), the second winding line (2) and the third winding line (3) pass through the middle of the end fixing plate (4).

5. The three-phase differential common-mode inductor according to claim 1, characterized in that: The three sets of three equally divided magnetic core blocks (7) abut each other at one end, and leave a gap between the other end and the circular magnetic core (6); or One end of each of the three sets of three equal-divided magnetic core blocks (7) is not in contact with the other end, and there is a gap between the other end and the circular magnetic core (6); or one end of each of the three sets of three equal-divided magnetic core blocks (7) is in contact with the other end, and the other end is in contact with the circular magnetic core (6); or one end of each of the three sets of three equal-divided magnetic core blocks (7) is not in contact with the other end, and the other end is in contact with the circular magnetic core (6).

6. The three-phase differential common-mode inductor according to claim 5, characterized in that: The three sets of three equal-division magnetic core blocks (7) are provided with magnetic core block fixing covers (71) on both sides of the circular magnetic core (6). The magnetic core block fixing covers (71) are used to fix the three sets of three equal-division magnetic core blocks (7) and the relative positions of the three equal-division magnetic core blocks (7) and the circular magnetic core (6).

7. The three-phase differential common-mode inductor according to claim 6, characterized in that: The circular magnetic core (6) has magnetic core fixing covers (5) on both sides of the axis. The magnetic core fixing covers (5) are used to isolate the first winding wire (1), the second winding wire (2) and the third winding wire (3) from adhering to the circular magnetic core (6).

8. The three-phase differential common-mode inductor according to claim 7, characterized in that: The magnetic core fixing cover (5) and the magnetic core block fixing cover (71) are made of insulating material.

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