A three-phase double-winding autocoupled integrated reactor

Abstract

The invention discloses a three-phase double-winding autocoupled integrated inductor, comprising a coil package, wherein an A-phase coil, a B-phase coil and a C-phase coil are arranged inside the coil package, and a central iron core is arranged inside the A-phase coil, the B-phase coil and the C-phase coil, and middle clamps are symmetrically arranged at both ends of the central iron core, and a first iron core and a second iron core are respectively arranged at both ends of a plurality of middle clamps, and a first clamp and a second clamp are arranged near one end of the first iron core of a plurality of middle clamps, wherein the first clamp, the middle clamp, the first iron core and the second clamp are installed together through a plurality of assembly components, and a third clamp and a fourth clamp are arranged near one end of the second iron core of a plurality of middle clamps, wherein the third clamp, the middle clamp, the second iron core and the fourth clamp are installed together through a plurality of assembly components; the above structure is used to form a plurality of groups of inductances, so that the integrated inductor can adjust the inductance output demand by changing the connection terminal.

Description

Technical Field

[0001] The invention relates to the technical field of electronic components, and in particular to a three-phase double-winding autocoupled integrated reactor. Background Art

[0002] Reactors are also called inductors. When a conductor is energized, it will generate a magnetic field in a certain space it occupies. Therefore, all current-carrying conductors have inductance in a general sense. However, the inductance of a long straight conductor with electricity is small, and the magnetic field generated is not strong. Therefore, the actual reactor is a wire wound into a solenoid, called an air-core reactor. Sometimes, in order to make the solenoid have a larger inductance, an iron core is inserted into the solenoid, which is called an iron-core reactor. Reactance is divided into inductive reactance and capacitive reactance. The more scientific classification is that inductive reactance (inductor) and capacitive reactance (capacitor) are collectively called reactors. With the continuous popularization of electrical equipment, people's demand for reactors is also increasing.

[0003] At present, interleaved control circuits are widely used, which require two reactors to work simultaneously or alternately. At present, the simplest solution is to use two separate reactors, but the volume of two separate reactors is relatively large, the space utilization rate is not high, and the cost of using two separate reactors at the same time is relatively high. Summary of the invention

[0004] In order to overcome the above technical problems, the object of the present invention is to provide a three-phase double-winding autocoupled integrated reactor.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A three-phase double-winding autocoupled integrated inductor comprises a coil package, wherein an A-phase coil, a B-phase coil and a C-phase coil are arranged inside the coil package, and a central iron core is arranged inside the A-phase coil, the B-phase coil and the C-phase coil, and middle clamps are symmetrically arranged at both ends of the central iron core, and a first iron core and a second iron core are respectively arranged at both ends of a plurality of middle clamps, and a first clamp and a second clamp are arranged near one end of the first iron core of a plurality of middle clamps, wherein the first clamp, the middle clamp, the first iron core and the second clamp are installed together through a plurality of assembly components, and a third clamp and a fourth clamp are arranged near one end of the second iron core of a plurality of middle clamps, wherein the third clamp, the middle clamp, the second iron core and the fourth clamp are installed together through a plurality of assembly components.

[0007] As a further solution of the present invention: the central iron core is divided into three sections, and a first air gap pad is arranged between each section of the central iron core.

[0008] As a further solution of the present invention: a plurality of first insulating pads and second air gap pads are arranged between the first iron core and the central iron core, and the plurality of first insulating pads and second air gap pads are arranged alternately.

[0009] As a further solution of the present invention: a plurality of second insulating pads and third air gap pads are arranged between the second iron core and the central iron core, and the plurality of second insulating pads and third air gap pads are arranged alternately.

[0010] As a further solution of the present invention: A1, A2, a1 and a2 terminals are respectively provided at both ends of the A-phase coil, B1, B2, b1 and b2 terminals are respectively provided at both ends of the B-phase coil, C1, C2, c1 and c2 terminals are respectively provided at both ends of the C-phase coil, and the A1, A2, B1, B2, C1 and C2 terminals are located on the same side, and the a1, a2, b1, b2, c1 and c2 terminals are located on the same side.

[0011] As a further solution of the present invention: the assembly component includes a mounting bolt, the head of the mounting bolt is covered with an insulating flat washer, a carbon steel flat washer and a spring washer, and a mounting nut is installed at one end of the mounting bolt outside the spring washer.

[0012] As a further solution of the present invention: the insulating flat gasket is located inside the carbon steel flat gasket, and the spring gasket is located outside the carbon steel flat gasket.

[0013] Beneficial effects of the present invention:

[0014] The present invention connects the first winding of phase A in series with the second winding of phase A, the first winding of phase B in series with the second winding of phase B, and the first winding of phase C in series with the second winding of phase C, so as to form three groups of inductances, wherein A1-A2 / B1-B2 / C1-C2 is one group of inductances, a1-a2 / b1-b2 / c1-c2 is one group of inductances, and A1-a2 / B1-b2 / C1-c2 is one group of inductances, so that the integrated reactor can adjust the inductance output demand by changing the connection terminal, and at the same time, the integrated reactor reduces the volume and weight of the product, and further reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the explosion structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall front view structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the overall top view of the structure of the present invention;

[0019] Figure 4 It is a schematic diagram of the overall side view structure of the present invention;

[0020] Figure 5 It is a schematic diagram of the assembly structure of the present invention;

[0021] Figure 6 It is a schematic diagram of the connection structure of the A-phase first winding and the A-phase second winding in the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of the first winding and the second winding in the present invention;

[0023] Figure 8 It is a schematic diagram of the winding cross-section structure in the present invention;

[0024] Fig. 9 It is a schematic diagram of the structure of the A-phase coil in the present invention;

[0025] Fig.10 It is a circuit connection schematic diagram of the present invention.

[0026] In the figure: 1, wire package; 11, support bar; 12, A-phase coil; 13, B-phase coil; 14, C-phase coil; 2, center core; 21, first air gap pad; 3, middle clamp; 4, first core; 41, first insulating pad; 42, second air gap pad; 5, second core; 51, second insulating pad; 52, third air gap pad; 6, first clamp; 7, second clamp; 8, third clamp; 9, fourth clamp; 120, assembly component; 1201, mounting bolt; 1202, insulating flat gasket; 1203, carbon steel flat gasket; 1204, spring gasket; 1205, mounting nut; 200, first winding; 300, second winding. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1-Figure 10As shown, it is a three-phase double-winding autocoupled integrated inductor, which includes a coil package 1, and three groups of coils are arranged in the coil package 1, namely, an A-phase coil 12, a B-phase coil 13 and a C-phase coil 14, and a central iron core 2 is arranged inside the A-phase coil 12, the B-phase coil 13 and the C-phase coil 14, wherein each central iron core 2 is also divided into three sections, and a first air gap pad 21 is arranged between each section, and the first air gap pad 21 is adjusted to change the magnetic flux rate so that the reactance value is changed, and at the same time, in each center A center clamp 3 is provided on both sides of the core iron core 2, and each two center clamps 3 clamp a center iron core 2 in the middle, and are assembled together in the middle of the A-phase coil 12, the B-phase coil 13 and the C-phase coil 14. A support bar 11 is provided on the outside of the two center clamps 3 and on the inside of the A-phase coil 12, the B-phase coil 13 and the C-phase coil 14. The support bar 11 is manually hammered in to support the A-phase coil 12, the B-phase coil 13 and the C-phase coil 14 and the center iron core 2 inside, and the center clamp 3 extends out of the A-phase coil 12, the B-phase coil 13 and the C-phase coil 14. A first iron core 4 is provided at one end of the 13 and C phase coils 14, and a second iron core 5 is provided at the other end, wherein a plurality of first insulating pads 41 and second air gap pads 42 are provided between the first iron core 4 and the center iron core 2, and the plurality of first insulating pads 41 and second air gap pads 42 are arranged alternately, and further a plurality of second insulating pads 51 and third air gap pads 52 are provided between the second iron core 5 and the center iron core 2, and the plurality of second insulating pads 51 and third air gap pads 52 are arranged alternately, and are located at the top of the middle clamp 3 outside the first iron core 4 The second clamp 7 and the first clamp 6 are respectively provided at the top and bottom, and the first clamp 6, the middle clamp 3, the first iron core 4 and the second clamp 7 are installed together through multiple assembly components 120, and the fourth clamp 9 and the third clamp 8 are respectively provided at the top and bottom of the middle clamp 3 outside the second iron core 5, and similarly, the third clamp 8, the middle clamp 3, the second iron core 5 and the fourth clamp 9 are also installed together through multiple assembly components 120, wherein the first insulating pad 41 and the second insulating pad 51 include but are not limited to insulating paper and insulating plate.

[0029] Further Figure 1 and Figure 3 As shown, the two ends of the A-phase coil 12 are respectively provided with A1, A2, a1 and a2 terminals, the two ends of the B-phase coil 13 are respectively provided with B1, B2, b1 and b2 terminals, and the two ends of the C-phase coil 14 are respectively provided with C1, C2, c1 and c2 terminals, and A1, A2, B1, B2, C1, C2 are located on the same side, and a1, a2, b1, b2, c1, c2 are located on the same side.

[0030] The winding structure of the present invention is as follows Figure 6-Figure 9As shown, the above-mentioned coil 1 is wound by the first winding 200 and the second winding 300 in cooperation with the winding insulation paper, wherein the first winding 200 is divided into the A-phase first winding, the B-phase first winding and the C-phase first winding, and the second winding 300 is divided into the A-phase second winding, the B-phase second winding and the C-phase second winding. The further winding method of the A-phase coil 12 is: the A-phase first winding is used to wind on the top of the inner layer insulation, firstly the first layer is wound, the number of turns is 52, then the winding insulation paper is covered, and then one layer is wound, the number of turns is 2 2 turns, and then covered with a layer of winding insulation paper, and the A-phase second winding is wound with 74 turns, and finally a layer of peripheral insulation paper is covered on the upper surface to form an A-phase coil 12, wherein the two terminal ends A1 and A2 of the A-phase first winding are located at one end, and the two terminal ends a1 and a2 of the A-phase second winding are located at one end, and the winding method of the B-phase coil 13 and the C-phase coil 14 is exactly the same as that of the A-phase coil 12, and finally the A-phase coil 12, the B-phase coil 13 and the C-phase coil 14 are formed by winding.

[0031] Further Fig.10 As shown, the circuit connection relationship inside the integrated reactor is that the first winding of phase A is connected in series with the second winding of phase A, the first winding of phase B is connected in series with the second winding of phase B, and the first winding of phase C is connected in series with the second winding of phase C, forming three groups of inductance, of which A1~A2 / B1~B2 / C1~C2 is one group of inductance, a1~a2 / b1~b2 / c1~c2 is one group of inductance, and A1~a2 / B1~b2 / C1~c2 is one group of inductance. The integrated reactor can adjust the inductance output demand by changing the connection terminal.

[0032] The above-mentioned assembly component 120 is as follows Figure 5 As shown, it includes a mounting bolt 1201, and the mounting bolt 1201 is set through when assembling the integrated inductor, passing through various parts from top to bottom, and an insulating flat gasket 1202, a carbon steel flat gasket 1203 and a spring gasket 1204 are set on the head of the mounting bolt 1201, wherein the insulating flat gasket 1202 is located at the innermost end, and the spring gasket 1204 is located at the outermost end, and the mounting bolt 1201 is installed with a mounting nut 1205 at one end outside the spring gasket 1204 to fix the positions of various components.

[0033] The present invention realizes the requirements of various inductance outputs by integrating multiple groups of reactor structures. At the same time, the integrated reactor reduces the volume and weight of the product, further reducing the production cost.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A three-phase dual-winding autocoupled integrated reactor, comprising a coil (1), characterized in that: An A-phase coil (12), a B-phase coil (13) and a C-phase coil (14) are arranged inside the coil package (1), and a central iron core (2) is arranged inside the A-phase coil (12), the B-phase coil (13) and the C-phase coil (14), and middle clamps (3) are symmetrically arranged at both ends of the central iron core (2), and the outer side of the middle clamps (3) is arranged on the support bar (11), and the first iron core (4) and the second iron core (5) are respectively arranged at both ends of the plurality of middle clamps (3), and the plurality of middle clamps (3) are close to the first iron core (4). A first clamp (6) and a second clamp (7) are provided at one end of the core (4), wherein the first clamp (6), the middle clamp (3), the first iron core (4) and the second clamp (7) are assembled together via a plurality of assembly components (120); a third clamp (8) and a fourth clamp (9) are provided at one end of the plurality of middle clamps (3) close to the second iron core (5), wherein the third clamp (8), the middle clamp (3), the second iron core (5) and the fourth clamp (9) are assembled together via a plurality of assembly components (120); A plurality of first insulating pads (41) and second air gap pads (42) are arranged between the first iron core (4) and the central iron core (2), and the plurality of first insulating pads (41) and second air gap pads (42) are arranged alternately; The assembly component (120) comprises a mounting bolt (1201), the head of the mounting bolt (1201) being sleeved with an insulating flat washer (1202), a carbon steel flat washer (1203) and a spring washer (1204), and a mounting nut (1205) is installed at one end of the mounting bolt (1201) outside the spring washer (1204).

2. A three-phase dual-winding autocoupler integrated reactor according to claim 1, characterized in that: The central iron core (2) is divided into three sections, and a first air gap pad (21) is arranged between each section of the central iron core (2).

3. The three-phase dual-winding autocoupled integrated reactor according to claim 1, characterized in that: A plurality of second insulating pads (51) and third air gap pads (52) are arranged between the second iron core (5) and the central iron core (2), and the plurality of second insulating pads (51) and third air gap pads (52) are arranged in a staggered manner.

4. A three-phase dual-winding autocoupled integrated reactor according to claim 1, characterized in that: The A-phase coil (12) is provided with A1, A2, a1 and a2 terminals at both ends, respectively; the B-phase coil (13) is provided with B1, B2, b1 and b2 terminals at both ends, respectively; the C-phase coil (14) is provided with C1, C2, c1 and c2 terminals at both ends, respectively; and the A1, A2, B1, B2, C1 and C2 terminals are located on the same side, and the a1, a2, b1, b2, c1 and c2 terminals are located on the same side.

5. The three-phase dual-winding autocoupled integrated reactor according to claim 1, characterized in that: The insulating flat gasket (1202) is located inside the carbon steel flat gasket (1203), and the spring gasket (1204) is located outside the carbon steel flat gasket (1203).

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