Three-phase four-column INV inductor

Abstract

The utility model discloses a three-phase four-column INV inductor which comprises a plurality of windings, a magnetic core structure and a supporting structure, and the windings are wound on the side surface of the magnetic core structure. The support structure sleeves a magnet yoke of the magnetic core structure; the magnetic core structure is provided with a plurality of magnet yokes and a plurality of magnetic core columns, and the magnet yokes are sequentially arranged at equal intervals in one direction. A plurality of magnetic core columns are arranged between every two adjacent magnet yokes, and the magnetic core columns are arranged and connected in one direction to form two sets of parallel magnetic core columns. The supporting structure comprises a plurality of supports, and the supports are correspondingly arranged on the surfaces of the sides, connected with the magnetic core columns, of the magnet yokes in a sleeving mode respectively. Each support is of a plate-shaped structure and is provided with a matching part and a supporting part, and the matching part is arranged on the surface of one side of the support; the supporting part diffuses outwards for a preset distance along the edge of the support to form a supporting plate. The three-phase four-column INV inductor provides stable support for the magnetic core structure through the supporting structure.

Description

Technical Field

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

[0002] Inductors (INV) are commonly used in inverter circuits, primarily for filtering, energy storage, and current regulation. Specifically, INV inductors, together with capacitors, form an LC filter to suppress high-frequency switching noise (such as harmonics generated by PWM), ensuring a smooth and stable output current. When switching devices (such as MOSFETs and IGBTs) are turned on, the INV inductor stores energy and releases it when turned off, maintaining current continuity. Furthermore, the INV inductor protects switching components from damage caused by sudden current changes.

[0003] Three-phase four-limb INV inductors typically employ a symmetrical four-limb layout, specifically comprising: each of the three main magnetic limbs corresponds to one phase winding (U / V / W), bearing the magnetic flux generated by that phase current; the neutral magnetic limb provides a closed path for the three-phase magnetic flux, balancing the asymmetrical magnetic flux and reducing leakage flux and core losses; and the yoke connects the top and bottom of each magnetic limb, forming a closed magnetic circuit to ensure efficient flux circulation. The four-limb design effectively disperses magnetic flux density, preventing local saturation, and the neutral limb reduces flux distortion during three-phase imbalance, improving system stability. However, existing three-phase four-limb INV inductors lack a supporting structure to provide structural support, making them susceptible to vibration and displacement during practical applications, which can affect the inductor's operational stability. Utility Model Content

[0004] Therefore, it is necessary to provide a three-phase four-limb INV inductor to address the technical problem of insufficient working stability of existing three-phase four-limb INV inductors.

[0005] A three-phase four-limb INV inductor includes several windings, a magnetic core structure, and a support structure. The windings are wound on the side surface of the magnetic core structure to form an inductor functional structure; the support structure is sleeved on the yoke of the magnetic core structure.

[0006] The magnetic core structure is provided with several magnetic yokes and several magnetic core pillars. The magnetic yokes are arranged in sequence at equal intervals along one direction to provide installation space for the magnetic core pillars. Several magnetic core pillars are arranged between two adjacent magnetic yokes, and the magnetic core pillars are arranged and connected along one direction to form two sets of parallel magnetic core pillars, thereby forming two parallel magnetic circuits, which are respectively connected to the magnetic yokes at both ends to form one of the single-phase magnetic core structures.

[0007] The support structure includes several brackets, which are respectively fitted onto one side surface of each magnetic yoke connected to the magnetic core column.

[0008] Each bracket is configured as a plate-like structure, and each bracket is provided with a mating part and a supporting part. The mating part is located on one side surface of the bracket for mating and connecting with the corresponding magnetic yoke; the supporting part extends outward from the edge of the bracket by a predetermined distance to form a support plate.

[0009] In one embodiment, each of the above-mentioned brackets is further provided with a clearance groove, the clearance groove being disposed on the end face of the magnetic core column on the main body of the bracket, and the clearance groove passing through both sides of the bracket to form a through hole of a preset shape and preset size.

[0010] In one embodiment, the end face of the magnetic core post can mate with the corresponding clearance groove and be connected to the corresponding magnetic yoke surface through the clearance groove.

[0011] In one embodiment, the aforementioned mating part is configured as a pre-shaped enclosure structure corresponding to the magnetic yoke. When the mating part is mated and connected with the corresponding magnetic yoke, the mating part is sleeved onto the side surface of the magnetic yoke.

[0012] In one embodiment, the aforementioned support portions are respectively disposed at the edges on both sides of the bracket.

[0013] In one embodiment, each of the above-mentioned support portions is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are disposed between the support portion and the mating portion.

[0014] In one embodiment, one end of each of the reinforcing ribs is connected to the surface of the support portion, and the other end of the reinforcing rib is connected to the outer surface of the side wall of the mating portion.

[0015] In one embodiment, the aforementioned support is made of an elastic material.

[0016] In one embodiment, the aforementioned bracket is made of silicone.

[0017] In one embodiment, the aforementioned bracket is made of thermally conductive silicone.

[0018] In one embodiment, each magnetic route between two adjacent yokes consists of four magnetic core posts stacked in one direction.

[0019] In one embodiment, each of the above-mentioned magnetic core posts is configured as a uniformly extended main body structure, and both ends of the magnetic core posts are configured as flat end faces.

[0020] In one embodiment, the two windings corresponding to the two magnetic circuits between the two adjacent magnetic yokes are connected in series and wound on the side surfaces of two sets of parallel magnetic core columns respectively.

[0021] The aforementioned three-phase four-limb INV inductor provides stable support for the core structure through a support structure, thereby enhancing the installation stability of the three-phase four-limb INV inductor, reducing vibration of the core structure and windings, and improving the inductor's operating stability. Specifically, the core structure includes several yokes and several core pillars; several core pillars are arranged between adjacent yokes, and these core pillars are connected in one direction to form two parallel sets of core pillars, thus forming two parallel magnetic circuits, which are respectively connected to the yokes at both ends to form one single-phase core structure. Based on this, the support structure includes several brackets, which are respectively fitted onto one side surface of each yoke connected to the core pillar, thereby providing sufficiently stable support for each yoke. Each bracket is a plate-like structure, and each bracket has a mating part and a supporting part. The mating part is located on one side surface of the bracket for mating and connecting with the corresponding yoke; the supporting part extends outwards along the edge of the bracket by a predetermined distance to form a support plate, which supports the yoke and prevents the yoke from directly contacting the mounting point, thus affecting the overall installation stability of the inductor. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a three-phase four-column INV inductor in one embodiment;

[0023] Figure 2 This is an exploded view of the structure of a three-phase four-column INV inductor in one embodiment;

[0024] Figure 3 This is a partial structural diagram of a three-phase four-column INV inductor in one embodiment. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] Please see Figures 1 to 3 This utility model discloses a three-phase four-column INV inductor 10, which includes several windings 100, a magnetic core structure 200, and a support structure. The windings 100 are wound on the side surface of the magnetic core structure 200 to form an inductor functional structure. The support structure is sleeved on the yoke 210 of the magnetic core structure 200. In the actual application of the three-phase four-column INV inductor 10, when it is installed at a preset installation point, the support structure can provide stable support for the magnetic core structure 200, thereby enhancing the installation stability of the three-phase four-column INV inductor 10, reducing the vibration of the magnetic core structure 200 and the windings 100, and improving the working stability of the inductor. Specifically, the magnetic core structure 200 is provided with a plurality of magnetic yokes 210 and a plurality of magnetic core pillars 220. The plurality of magnetic yokes 210 are arranged sequentially and equidistantly along one direction to provide installation space for the magnetic core pillars 220. A plurality of magnetic core pillars 220 are provided between two adjacent magnetic yokes 210, and the plurality of magnetic core pillars 220 are arranged and connected along one direction to form two sets of parallel magnetic core pillars 220, thereby forming two parallel magnetic circuits, which are respectively connected to the magnetic yokes 210 at both ends to form one single-phase magnetic core structure 200. Based on this, the support structure includes a plurality of brackets 300, which are respectively sleeved on one side surface of each magnetic yoke 210 connected to the magnetic core pillar 220, so that each magnetic yoke 210 has sufficiently stable support. More specifically, each bracket 300 is configured as a plate structure, and each bracket 300 is provided with a mating part 310 and a supporting part 320. The mating part 310 is provided on one side surface of the bracket 300 for mating and connecting with the corresponding magnetic yoke 210. The supporting part 320 extends outward from the edge of the bracket 300 by a predetermined distance to form a support plate for supporting the magnetic yoke 210, so as to avoid the magnetic yoke 210 directly contacting the mounting point and affecting the overall installation stability of the inductor.

[0032] Furthermore, each bracket 300 is also provided with a clearance groove a, which is provided on the main body of the bracket 300 corresponding to the end face of the magnetic core column 220. The clearance groove a passes through both sides of the bracket 300 to form a through hole of a preset shape and size. Correspondingly, the end face of the magnetic core column 220 can cooperate with the corresponding clearance groove a and is connected to the surface of the corresponding magnetic yoke 210 through the clearance groove a. This ensures that the bracket 300 supports the magnetic yoke 210 while ensuring an effective connection between the magnetic core column 220 and the corresponding magnetic yoke 210.

[0033] Furthermore, the mating part 310 is configured as a pre-shaped enclosure structure corresponding to the yoke 210. When the mating part 310 is mated and connected with the corresponding yoke 210, the mating part 310 is sleeved onto the side surface of the yoke 210. That is, the yoke 210 is embedded in the mating part 310 and abuts against the main body of the bracket 300. This effectively ensures the tightness of the connection between the bracket 300 and the yoke 210, reduces the vibration between the yoke 210 and the bracket 300, and thus improves the stability during inductor application.

[0034] Furthermore, the support portions 320 are respectively disposed on the edges of both sides of the bracket 300, so that in practical applications, the inductor can be installed at a preset mounting point by selecting one of the two sides of the support portion 320, thereby enabling the inductor to be supported by the support portion 320 while reducing the lateral volume of the inductor and improving the installation flexibility of the inductor.

[0035] Furthermore, each support portion 320 is provided with a plurality of reinforcing ribs 321, which are disposed between the support portion 320 and the mating portion 310. Specifically, one end of each reinforcing rib 321 is connected to the surface of the support portion 320, and the other end of the reinforcing rib 321 is connected to the outer surface of the side wall of the mating portion 310, thereby reinforcing the structure between the support portion 320 and the mating portion 310, thereby improving the bending resistance of the support portion 320 and enhancing the stability of the support.

[0036] In one embodiment, the bracket 300 is made of an elastic material, thereby enhancing its cushioning and shock absorption performance while providing support and improving the inductor's vibration resistance during use. In one embodiment, the bracket 300 is made of silicone; in another embodiment, the bracket 300 is made of thermally conductive silicone to further enhance the inductor's heat dissipation performance.

[0037] Furthermore, each magnetic route between two adjacent magnetic yokes 210 comprises four magnetic core posts 220 stacked in one direction. In one embodiment, each magnetic core post 220 is configured as a uniformly extended main structure, and both ends of the magnetic core post 220 are configured as flat end faces, which facilitates the linear stacking arrangement of the magnetic core posts 220.

[0038] Furthermore, the two windings 100 on both sides of the two magnetic circuits between two adjacent magnetic yokes 210 are connected in series and wound on the side surfaces of two sets of parallel magnetic core columns 220 respectively.

[0039] In summary, the three-phase four-limb INV inductor disclosed in this utility model provides stable support for the core structure through a support structure, thereby enhancing the installation stability of the three-phase four-limb INV inductor, reducing vibration of the core structure and windings, and improving the inductor's operating stability. Specifically, the core structure is provided with several yokes and several core pillars; several core pillars are arranged between two adjacent yokes, and these core pillars are arranged and connected in one direction to form two sets of parallel core pillars, thus forming two parallel magnetic circuits, which are respectively connected to the yokes at both ends to form one single-phase core structure; based on this, the support structure includes several brackets, which are respectively sleeved on one side surface of each yoke connected to the core pillar, so that each yoke has sufficiently stable support. Each bracket is configured as a plate structure, and each bracket is provided with a mating part and a supporting part. The mating part is located on one side surface of the bracket for mating and connecting with the corresponding magnetic yoke. The supporting part extends outward from the edge of the bracket by a predetermined distance to form a support plate, which is used to support the magnetic yoke and prevent the magnetic yoke from directly contacting the mounting point and affecting the overall installation stability of the inductor.

[0040] 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.

[0041] 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-pillar INV inductance, characterized by, The application relates to a single-phase magnetic core structure. The single-phase magnetic core structure comprises a plurality of windings and a magnetic core structure, the windings are wound on the side surface of the magnetic core structure to form an inductance functional structure, and a support structure is sleeved on the magnetic yoke of the magnetic core structure. The magnetic core structure is provided with a plurality of magnetic yokes and a plurality of magnetic core columns, the magnetic yokes are arranged in sequence at equal intervals along a direction to provide mounting spaces for the magnetic core columns, a plurality of magnetic core columns are arranged between two adjacent magnetic yokes, the magnetic core columns are arranged in a direction to form two groups of magnetic core columns parallel to each other, thereby forming two parallel magnetic circuits, and the magnetic yokes at two ends are connected, so that a single-phase magnetic core structure is formed. The support structure comprises a plurality of supports, and the supports are respectively sleeved on one side surface of each magnetic yoke connected with the magnetic core columns. Each support is provided in a plate structure, and is provided with a matching part and a supporting part, the matching part is arranged on one side surface of the support to be matched and connected with the corresponding magnetic yoke, and the supporting part is diffused outward along the edge of the support by a preset distance to form a support plate.

2. The three-phase four-column INV inductance of claim 1, wherein, Each support is further provided with a clearance groove, the clearance groove is arranged on the main body part of the support corresponding to the end surface of the magnetic core column, and the clearance groove penetrates through both sides of the support to form a through hole with a preset shape and size.

3. The three-phase four-column INV inductance of claim 2, wherein, The end surface of the magnetic core column can be matched with the corresponding clearance groove and connected to the surface of the corresponding magnetic yoke through the clearance groove.

4. The three-phase four-pillar INV inductance according to claim 3, characterized in that, The matching part is provided in a surrounding plate structure with a preset shape corresponding to the magnetic yoke, and when the matching part is matched and connected with the corresponding magnetic yoke, the matching part is sleeved on the side surface of the magnetic yoke.

5. The three-phase four-column INV inductance of claim 4, wherein, The supporting parts are respectively arranged at the edges of both sides of the support.

6. The three-phase four-column INV inductance of claim 5, wherein, Each supporting part is provided with a plurality of reinforcing ribs arranged between the supporting part and the matching part.

7. The three-phase four-column INV inductance of claim 6, wherein, One end of each reinforcing rib is connected to the surface of the supporting part, and the other end of the reinforcing rib is connected to the outer surface of the side wall of the matching part.

8. The three-phase four-column INV inductance of claim 7, wherein, The support is made of elastic material.

9. The three-phase four-column INV inductance of claim 8, wherein, Each magnetic circuit between two adjacent magnetic yokes is arranged in a direction by stacking four magnetic core columns.

10. The three-phase four-pillar INV inductance of claim 9, wherein, The two side windings corresponding to the two magnetic circuits between the two adjacent magnetic yokes are connected in series and wound on the side surfaces of the two groups of magnetic core columns parallel to each other.

Images