Three-phase four-column magnetic integrated inductor

Abstract

The utility model discloses a three-phase four-column magnetic integrated inductor which comprises a bottom plate, four magnet yokes, a plurality of magnetic core columns and a plurality of coils, the four magnet yokes are installed on the surface of one side of the bottom plate, and the four magnet yokes are respectively parallel to a preset plane and are arranged at equal intervals; the plurality of magnetic core columns are respectively arranged between the two adjacent magnetic yokes, so that the two adjacent magnetic yokes are matched with the plurality of corresponding magnetic core columns to form a complete magnetic circuit; the plurality of coils are in one-to-one correspondence with the plurality of magnetic core columns, and each coil is wound on the corresponding magnetic core column; the magnetic core columns between every two adjacent magnet yokes are arranged in the length extending direction of the corresponding magnet yokes, and therefore the magnetic core structure of the three-phase four-column magnetic integrated inductor is integrally arranged in a thin mode. The three-phase four-column magnetic integrated inductor is matched with a plurality of magnetic cores and a plurality of coils wound on the surfaces of the magnetic cores through the four magnet yokes to form a whole structure of the three-phase four-column magnetic integrated inductor, and the whole size can be effectively reduced through magnetic circuit integration of the magnetic core columns.

Description

Technical Field

[0001] This utility model relates to the field of three-phase four-column integrated magnetic inductor technology, and in particular to a three-phase four-column integrated magnetic inductor. Background Technology

[0002] A three-phase four-limb inductor is a special type of inductor primarily used in three-phase circuits. It typically consists of three magnetic cores and three coils, with each coil wound around a separate core. This structure allows the three-phase inductor to handle three-phase currents simultaneously, enabling inductive regulation and control of the three-phase circuit. The main functions of a three-phase four-limb inductor include: balancing current: It balances the current between phases in a three-phase circuit, ensuring uniform current distribution and avoiding problems caused by unbalanced loads. Suppressing harmonics: The three-phase four-limb inductor reduces harmonics in the circuit and improves the power factor. Improving circuit stability: By introducing inductance, energy can be stored in the circuit, thereby improving circuit stability and anti-interference capabilities.

[0003] Currently, commercially available three-phase four-column inductors typically integrate three inductors into a single structure via magnetic integration. For example, Chinese patent CN220627558U discloses a three-phase four-column inductor and transformer. The three-phase four-column inductor includes a top magnetic core, a bottom magnetic core, three side magnetic cores, a center magnetic core, and a coil winding. The top magnetic core is attached to the top of the center magnetic core, and the bottom magnetic core is attached to the bottom of the center magnetic core. The height of the center magnetic core is higher than the height of the three side magnetic cores. The three side magnetic cores are arranged equidistantly and at equal angles around the center magnetic core between the bottom and top magnetic cores. The coil winding is wound around the side magnetic cores. This patent addresses the issues of high material costs and large volume space requirements to some extent. However, the three-phase four-column inductors described above, which arrange the inductors at the same height on the same plane and in a radial, centrally symmetrical manner, make their height, width, and thickness relatively uniform in the conventional sense. For relatively narrow and compact installation spaces, the adaptability of these three-phase four-column inductors is limited, which is not conducive to further lightweight and miniaturized designs for such applications. Utility Model Content

[0004] Therefore, it is necessary to provide a three-phase four-column magnetic integrated inductor to address the technical problem of limited installation adaptability of currently available three-phase four-column inductors.

[0005] A three-phase four-column integrated magnetic inductor includes a base plate, four yokes, a plurality of magnetic core columns, and a plurality of coils. The four yokes are mounted on one side surface of the base plate and are arranged parallel to a predetermined plane and at equal intervals. The plurality of magnetic core columns are respectively disposed between two adjacent yokes, so that the two adjacent yokes cooperate with the corresponding plurality of magnetic core columns to form a complete magnetic circuit. The plurality of coils correspond one-to-one with the plurality of magnetic core columns, and each coil is wound on the corresponding magnetic core column.

[0006] Several core columns between two adjacent magnetic yokes are arranged along the length extension direction of the corresponding magnetic yoke, so that the core structure of the three-phase four-column integrated magnetic inductor is thin as a whole.

[0007] In one embodiment, each of the above-described magnetic core pillars is configured as a columnar structure that extends uniformly along the length direction.

[0008] In one embodiment, the cross-section of each of the aforementioned magnetic core pillars is set to a centrally symmetrical shape.

[0009] In one embodiment, the cross-section of each of the magnetic core pillars described above is set to be circular.

[0010] In one embodiment, each of the above-mentioned magnetic core pillars is provided with two air gap plates, which are disposed on the end faces of the corresponding magnetic core pillars. That is, each air gap plate is disposed between the corresponding end face of the magnetic core pillar and the adjacent magnetic yoke.

[0011] In one embodiment, the air gap plate is configured as a centrally through-hole annular plate structure along the circular end face of the magnetic core column.

[0012] In one embodiment, each of the magnetic core posts is provided with insulating paper, which covers the side surface of the corresponding magnetic core post; that is, the insulating paper is disposed between the magnetic core post and the corresponding coil.

[0013] In one embodiment, the insulating paper is configured as a hollow cylindrical structure on the side surface of the magnetic core column.

[0014] In one embodiment, a partition is provided between each of the yokes and the coil.

[0015] In one embodiment, each of the above-mentioned partitions is provided with a plurality of clearance holes corresponding to a plurality of magnetic core columns adjacent to the magnetic yoke, so that the magnetic core columns are connected to the magnetic yoke through the corresponding clearance holes.

[0016] In one embodiment, the corresponding air gap piece is disposed within the corresponding clearance hole.

[0017] In one embodiment, the magnetic core posts between the adjacent magnetic yokes are configured as two.

[0018] In one embodiment, the coils between the two adjacent magnetic yokes are configured as two, and are respectively wound on the corresponding magnetic core cylinder surface.

[0019] In one embodiment, the aforementioned base plate extends along the thickness direction of the three-phase four-column integrated magnetic inductor and is disposed at one end of the four magnetic yokes.

[0020] In one embodiment, the aforementioned three-phase four-column magnetic integrated inductor further includes four magnetic core blocks, each corresponding to one of the four magnetic yokes. One end of each magnetic core block is connected to the surface of the base plate, and the other end of the magnetic core block abuts against the corresponding magnetic yoke.

[0021] In one embodiment, the aforementioned three-phase four-column magnetic integrated inductor further includes four steel cable ties, each corresponding to one of the four magnetic yokes. Each steel cable tie is wound around the measuring surface of the corresponding magnetic yoke and connected to the base plate.

[0022] In one embodiment, the coils between the adjacent magnetic yokes are electrically connected in parallel.

[0023] In one embodiment, the leads at both ends of the coil extend to the other side of the base plate via a copper busbar.

[0024] The aforementioned three-phase four-limb integrated magnetic inductor is formed by four magnetic yokes, several magnetic cores, and several coils wound on their surfaces to create the overall structure. Through the integration of the magnetic circuits of the core columns, the overall size of the three-phase four-limb integrated magnetic inductor can be effectively reduced. This significantly improves inductor efficiency and power density while enhancing installation convenience in practical applications. It reduces the need for additional space to install multiple independent inductors, facilitating lightweight and miniaturized design of application equipment. Specifically, several magnetic core columns between adjacent magnetic yokes are arranged along the length of the corresponding yokes, resulting in a thin overall core structure for the three-phase four-limb integrated magnetic inductor. This effectively reduces the thickness of the inductor, adapting to narrow installation spaces and meeting the requirements of applications with tight component placement. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a three-phase four-column integrated magnetic inductor in one embodiment;

[0026] Figure 2 This is an exploded structural diagram of a three-phase four-column integrated magnetic inductor in one embodiment. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Please see Figures 1 to 2 This utility model discloses a three-phase four-column integrated magnetic inductor 10, which includes a base plate 100, four yokes 200, a plurality of magnetic core columns 300, and a plurality of coils 400. The four yokes 200 are mounted on one side surface of the base plate 100, and are arranged parallel to a predetermined plane and at equal intervals. The plurality of magnetic core columns 300 are respectively disposed between two adjacent yokes 200, so that the two adjacent yokes 200 cooperate with the corresponding plurality of magnetic core columns 300 to form a complete magnetic circuit. The plurality of coils 400 are respectively located between the plurality of magnetic core columns. Each coil 400 is wound around a corresponding magnetic core post 300. Based on this, the four magnetic yokes 200, together with several magnetic cores and several coils 400 wound on their surfaces, form the overall structure of a three-phase four-column integrated magnetic inductor 10. Through the magnetic circuit integration of the magnetic core posts 300, the overall volume of the three-phase four-column integrated magnetic inductor 10 can be effectively reduced. This significantly improves inductor efficiency and power density while enhancing its installation convenience in practical applications. It reduces the need for additional space to install multiple independent inductors, which is beneficial for the lightweight and miniaturized design of application equipment. Specifically, several magnetic core posts 300 between two adjacent magnetic yokes 200 are arranged along the length extension direction of the corresponding magnetic yoke 200, so that the overall magnetic core structure of the three-phase four-column integrated magnetic inductor 10 is thin, thereby effectively reducing the thickness of the three-phase four-column integrated magnetic inductor 10 to adapt to narrow installation spaces and meet the application scenarios that require a certain degree of compact component arrangement.

[0034] Furthermore, each magnetic core post 300 is configured as a columnar structure extending uniformly along its length, thereby ensuring the overall regularity of the three-phase four-post integrated magnetic inductor 10. In one embodiment, the cross-section of each magnetic core post 300 is configured as a centrally symmetrical shape. More specifically, in this embodiment, the cross-section of each magnetic core post 300 is configured as a circle.

[0035] Furthermore, each magnetic core post 300 is provided with two air gap plates 310, which are disposed at both ends of the corresponding magnetic core post 300. That is, each air gap plate 310 is disposed between the corresponding end face of the magnetic core post 300 and the adjacent magnetic yoke 200 to ensure that a predetermined air gap of a certain width is reserved between the magnetic yoke 200 and the corresponding magnetic core post 300. In one embodiment, the air gap plate 310 is configured as a ring-shaped plate structure with a central through-hole along the circular end face of the magnetic core post 300.

[0036] Furthermore, each magnetic core post 300 is provided with insulating paper 320, which covers the corresponding side surface of the magnetic core post 300. That is, the insulating paper 320 is disposed between the magnetic core post 300 and the corresponding coil 400, thereby ensuring the insulation performance between the coil 400 and the corresponding magnetic core post 300. In one embodiment, the insulating paper 320 corresponding to the side surface of the magnetic core post 300 is set as a hollow cylindrical structure, thereby ensuring the tightness of the adhesion between the insulating paper 320 and the side surface of the magnetic core post 300.

[0037] Furthermore, a partition 210 is provided between each yoke 200 and the coil 400 to ensure insulation between the coil 400 and the corresponding yoke 200. Specifically, each partition 210 is provided with several clearance holes a corresponding to several magnetic core posts 300 adjacent to the yoke 200, so that the magnetic core posts 300 are connected to the yoke 200 through the corresponding clearance holes a. Based on this, the corresponding air gap plate 310 is provided in the corresponding clearance hole a.

[0038] Furthermore, in one embodiment, two magnetic core posts 300 are provided between adjacent magnetic yokes 200, and correspondingly, two coils 400 are provided between two adjacent magnetic yokes 200, and are respectively wound on the surface of the corresponding magnetic core post 300.

[0039] Furthermore, the base plate 100 extends along the thickness direction of the three-phase four-column integrated magnetic inductor 10 and is disposed at one end of the four magnetic yokes 200 to ensure the overall thin structure of the three-phase four-column integrated magnetic inductor 10.

[0040] Furthermore, the three-phase four-column integrated magnetic inductor 10 also includes four magnetic core pads 500, which correspond one-to-one with the four magnetic yokes 200. One end of each magnetic core pad 500 is connected to the surface of the base plate 100, and the other end of the magnetic core pad 500 abuts against the corresponding magnetic yoke 200 to effectively support the magnetic yoke 200.

[0041] Furthermore, the three-phase four-column integrated magnetic inductor 10 also includes four steel cable ties 600, which correspond one-to-one with the four magnetic yokes 200. Each steel cable tie 600 is wound around the side surface of the corresponding magnetic yoke 200 and connected to the base plate 100 to fasten the magnetic yoke 200, thereby improving the overall installation stability of the magnetic core structure.

[0042] Furthermore, in one embodiment, the coils 400 between adjacent yokes 200 are electrically connected in parallel. Based on this, the leads at both ends of the coils 400 extend to the other side of the base plate 100 via a copper busbar 410 for installation connection in practical applications.

[0043] In summary, the three-phase four-limb integrated magnetic inductor disclosed in this invention forms an overall structure through four magnetic yokes, several magnetic cores, and several coils wound on their surfaces. By integrating the magnetic circuits of the core columns, the overall volume of the three-phase four-limb integrated magnetic inductor can be effectively reduced. This significantly improves inductor efficiency and power density while enhancing installation convenience in practical applications, reducing the need for additional space to install multiple independent inductors, and facilitating lightweight and miniaturized design of application equipment. Specifically, several magnetic core columns between adjacent magnetic yokes are arranged along the length of the corresponding yokes, resulting in a thin overall core structure for the three-phase four-limb integrated magnetic inductor. This effectively reduces the thickness of the inductor, adapting to narrow installation spaces and meeting the requirements of applications with specific requirements for compact component arrangement.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A three-phase four-column integrated magnetic inductor, characterized in that, include: The system comprises a base plate, four magnetic yokes, several magnetic core posts, and several coils. The four magnetic yokes are mounted on one side surface of the base plate and are arranged parallel to a predetermined plane and at equal intervals. The several magnetic core posts are respectively disposed between two adjacent magnetic yokes, so that the two adjacent magnetic yokes cooperate with the corresponding magnetic core posts to form a complete magnetic circuit. The several coils correspond one-to-one with the several magnetic core posts, and each coil is wound around the corresponding magnetic core post. The magnetic core columns between two adjacent magnetic yokes are arranged along the length extension direction of the corresponding magnetic yoke, so that the magnetic core structure of the three-phase four-column integrated magnetic inductor is thin as a whole.

2. The three-phase four-column integrated magnetic inductor according to claim 1, characterized in that, Each of the magnetic core columns is configured as a columnar structure that extends uniformly along its length.

3. The three-phase four-column integrated magnetic inductor according to claim 1, characterized in that, Each of the magnetic core columns is provided with two air gap plates, which are disposed on the end faces of the corresponding magnetic core columns.

4. The three-phase four-column integrated magnetic inductor according to claim 1, characterized in that, Each of the magnetic core posts is provided with insulating paper, which covers the corresponding side surface of the magnetic core post.

5. The three-phase four-column integrated magnetic inductor according to claim 4, characterized in that, The insulating paper is configured as a hollow cylindrical structure corresponding to the surface of the magnetic core column.

6. The three-phase four-column integrated magnetic inductor according to claim 3, characterized in that, A partition is provided between each of the magnetic yokes and the coil.

7. The three-phase four-column integrated magnetic inductor according to claim 6, characterized in that, Each of the partitions is provided with a plurality of clearance holes corresponding to a plurality of magnetic core posts adjacent to the magnetic yoke, thereby the magnetic core posts are connected to the magnetic yoke through the corresponding clearance holes.

8. The three-phase four-column integrated magnetic inductor according to claim 7, characterized in that, The corresponding air gap plate is disposed in the corresponding clearance hole.

9. The three-phase four-column integrated magnetic inductor according to claim 1, characterized in that, The magnetic core posts between adjacent magnetic yokes are configured as two.

10. The three-phase four-column integrated magnetic inductor according to claim 1, characterized in that, The base plate extends along the thickness direction of the three-phase four-column integrated magnetic inductor and is disposed at one end of the four magnetic yokes.

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