High-power three-phase air-core reactor with adjustable coupling coefficient

Abstract

The utility model relates to a high-power three-phase air-core reactor with an adjustable coupling coefficient, and belongs to the technical field of reactors. The three-phase air-core reactor comprises nine sections of concentric windings, and the axes of the nine sections of concentric windings are all perpendicular to the ground; the transverse areas of the nine sections of windings form a 3 * 3 matrix, namely, the three layers are sequentially divided into an inner layer, a middle layer and an outer layer from inside to outside, and each layer is sequentially divided into three cakes from top to bottom; the A-phase coil, the B-phase coil and the C-phase coil are respectively formed by connecting any three sections of windings in nine sections of concentric windings in series in the forward direction; and any two phases of coils have no common winding. According to the three-phase air-core reactor, the coupling coefficient can be adjusted by changing the winding combination mode of the A-phase coil, the B-phase coil and the C-phase coil; due to the fact that the coefficient is adjustable, different coupling characteristics of the degaussing working coil can be effectively simulated, and an experimental basis is provided for developing a degaussing main power supply.

Description

Technical Field

[0001] This utility model belongs to the field of reactor technology, specifically relating to a high-power three-phase air-core reactor with adjustable coupling coefficient. Background Technology

[0002] Magnetic treatment is an important means to improve the magnetic protection capability of ships. In order to reduce the voltage and power level of the demagnetizing main power supply, the demagnetizing working coil is usually divided into multiple circuits, and each circuit is powered by a separate demagnetizing main power supply. Since the coil circuits are tightly wound, the mutual inductance coupling coefficient between the circuits is very large and is related to the cable laying method. The mutual inductance coefficient varies with different laying schemes. In order to develop a demagnetizing main power supply that meets the requirements, a high-power inductive load with adjustable coupling coefficient needs to be equipped in the laboratory as a test object. Usually, a three-phase reactor is used for simulation.

[0003] Considering that the iron core will be severely saturated under high pulse power conditions, an air-core reactor should be used. However, the mutual inductance coefficient of conventional concentric air-core reactors is not adjustable. Therefore, designing a high-power three-phase air-core reactor with adjustable coupling coefficient is of great engineering significance. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies and provide a high-power three-phase air-core reactor with adjustable coupling coefficient.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A high-power three-phase air-core reactor with adjustable coupling coefficient includes nine concentric windings, namely the first winding, the second winding, the third winding, the fourth winding, the fifth winding, the sixth winding, the seventh winding, the eighth winding, and the ninth winding.

[0007] The axes of the nine concentric windings are all perpendicular to the ground;

[0008] The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom.

[0009] The inner layer consists of the first winding, the second winding, and the third winding from top to bottom.

[0010] The middle layer consists of the fourth winding, the fifth winding, and the sixth winding from top to bottom;

[0011] The outer layer consists of the seventh winding, the eighth winding, and the ninth winding from top to bottom.

[0012] Phase A coil, Phase B coil and Phase C coil are each composed of any 3 windings from the nine concentric windings connected in a forward series;

[0013] Furthermore, no two phase coils share any common windings.

[0014] Furthermore, preferably, the number of turns in each winding segment is the same.

[0015] Furthermore, preferably, the radial spacing between adjacent windings is equal in the radial direction; and the axial spacing between adjacent windings is also equal in the axial direction.

[0016] Furthermore, preferably, the A-phase coil is composed of a first winding, a second winding, and a third winding connected in a forward series.

[0017] The B-phase coil is composed of the fourth, fifth, and sixth windings connected in a forward series.

[0018] The C-phase coil consists of the seventh, eighth, and ninth windings connected in a forward series.

[0019] Furthermore, preferably, the A-phase coil is composed of the first winding segment, the fifth winding segment, and the ninth winding segment connected in a forward series;

[0020] The B-phase coil is composed of the second, sixth, and seventh windings connected in a forward series.

[0021] The C-phase coil is composed of the third, fourth, and eighth windings connected in a forward series.

[0022] Furthermore, preferably, the A-phase coil is composed of a first winding, a second winding, and a sixth winding connected in a forward series.

[0023] The B-phase coil is composed of the fourth, fifth, and ninth windings connected in a forward series.

[0024] The C-phase coil is composed of the third, seventh, and eighth windings connected in a forward series.

[0025] Furthermore, preferably, the A-phase coil is composed of the first winding segment, the fourth winding segment, and the seventh winding segment connected in a forward series;

[0026] The B-phase coil is composed of the second, fifth, and eighth windings connected in a forward series.

[0027] The C-phase coil is composed of the third, sixth, and ninth windings connected in a forward series.

[0028] Furthermore, preferably, the A-phase coil is composed of the first winding segment, the fourth winding segment, and the ninth winding segment connected in a forward series;

[0029] The B-phase coil is composed of the second, fifth, and seventh windings connected in a forward series.

[0030] The C-phase coil is composed of the third, sixth, and eighth windings connected in a forward series.

[0031] In this invention, the cross-sectional area of ​​the nine winding segments forms a 3×3 matrix (the interface between the winding and any plane passing through the axis is called the cross-section), that is, it is divided into three layers from the inside to the outside, namely the inner layer, the middle layer and the outer layer, and each layer is divided into three cakes from top to bottom; the inner and outer divisions are called layers, and the upper and lower divisions are called cakes.

[0032] The high-power three-phase air-core reactor with adjustable coupling coefficient of this utility model has the same structure as existing structures except for the winding configuration. This utility model does not limit the structure in this regard. For example, existing support components can be used to support the coil, and existing shells can be used as the shell of the reactor.

[0033] In this invention, the A-phase coil, B-phase coil, and C-phase coil are each composed of any three windings from a nine-segment concentric winding connected in a forward direction. By changing the winding combination of each coil, the mutual inductance coupling coefficient can be adjusted. "Forward direction" means that the magnetic flux generated by each coil is in the same direction after current is applied; from a winding perspective, this means that all coils are wound clockwise or counterclockwise, and the direction cannot be changed.

[0034] In this invention, the "adjustable coupling coefficient" in the high-power three-phase air-core reactor with adjustable coupling coefficient is achieved by changing the winding combination of phase A, phase B, and phase C coils; it is not an online real-time adjustment of the "coupling coefficient".

[0035] Compared with the prior art, the advantages of this utility model are as follows:

[0036] This utility model provides a high-power three-phase air-core reactor with adjustable coupling coefficient. The three-phase air-core reactor has a novel structure and the coupling coefficient can be adjusted by changing the winding combination of phase A, phase B and phase C coils.

[0037] Currently, the coupling coefficient of the actual demagnetizing coil is related to its laying method and is usually difficult to calculate accurately. In the design stage, in order to fully verify the characteristics of the demagnetizing power supply, it is necessary to analyze the influence of different coupling coefficients on the power supply. Since the coefficient of this utility model is adjustable, this utility model can effectively simulate different coupling characteristics of the demagnetizing working coil, providing an experimental basis for the development of the main demagnetizing power supply. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the axisymmetric structure of the high-power three-phase air-core reactor with adjustable coupling coefficient of this utility model;

[0040] Figure 2 This is a dimension diagram of the axisymmetric structure of a high-power three-phase air-core reactor with adjustable coupling coefficient in an application example of this utility model.

[0041] Figure 3 This is a schematic diagram of a 1 / 2 axisymmetric structure of a high-power three-phase air-core reactor with adjustable coupling coefficient in an application example of this utility model.

[0042] Wherein: 1. First winding segment; 2. Second winding segment; 3. Third winding segment; 4. Fourth winding segment; 5. Fifth winding segment; 6. Sixth winding segment; 7. Seventh winding segment; 8. Eighth winding segment; 9. Ninth winding segment. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to the embodiments.

[0044] Those skilled in the art will understand that the following embodiments are for illustrative purposes only and should not be construed as limiting the scope of the present invention. Where specific techniques, connections, or conditions are not specified in the embodiments, they are performed in accordance with the techniques, connections, or conditions described in the literature in the field or according to the product instructions. Materials, instruments, or equipment used without specified manufacturers are all conventional products that can be obtained through purchase.

[0045] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” to another element, it can be directly connected to the other element, or there may be an intermediate element. Furthermore, the term “connected” as used herein can include wireless connections. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0046] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. The terms "inner", "upper", "lower", etc., indicate the orientation or state relationship based on the orientation or state relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "equipped with" 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. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0049] Example 1

[0050] like Figure 1 As shown, a high-power three-phase air-core reactor with adjustable coupling coefficient includes nine concentric windings, namely, the first winding 1, the second winding 2, the third winding 3, the fourth winding 4, the fifth winding 5, the sixth winding 6, the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0051] The axes of the nine concentric windings are all perpendicular to the ground;

[0052] The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom.

[0053] The inner layers, from top to bottom, are the first winding 1, the second winding 2, and the third winding 3;

[0054] The middle layer consists of the fourth winding 4, the fifth winding 5, and the sixth winding 6, from top to bottom.

[0055] The outer layer, from top to bottom, consists of the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0056] Phase A coil, Phase B coil and Phase C coil are each composed of any 3 windings from the nine concentric windings connected in a forward series;

[0057] Furthermore, no two phase coils share any common windings.

[0058] Example 2

[0059] like Figure 1 As shown, a high-power three-phase air-core reactor with adjustable coupling coefficient includes nine concentric windings, namely, the first winding 1, the second winding 2, the third winding 3, the fourth winding 4, the fifth winding 5, the sixth winding 6, the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0060] The axes of the nine concentric windings are all perpendicular to the ground;

[0061] The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom.

[0062] The inner layers, from top to bottom, are the first winding 1, the second winding 2, and the third winding 3;

[0063] The middle layer consists of the fourth winding 4, the fifth winding 5, and the sixth winding 6, from top to bottom.

[0064] The outer layer, from top to bottom, consists of the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0065] Phase A coil, Phase B coil and Phase C coil are each composed of any 3 windings from the nine concentric windings connected in a forward series;

[0066] Furthermore, no two phase coils share any common windings.

[0067] The number of turns in each winding segment is the same.

[0068] In the radial direction, the radial spacing between adjacent windings is equal; in the axial direction, the axial spacing between adjacent windings is also equal.

[0069] Example 3

[0070] like Figure 1 As shown, a high-power three-phase air-core reactor with adjustable coupling coefficient includes nine concentric windings, namely, the first winding 1, the second winding 2, the third winding 3, the fourth winding 4, the fifth winding 5, the sixth winding 6, the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0071] The axes of the nine concentric windings are all perpendicular to the ground;

[0072] The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom.

[0073] The inner layers, from top to bottom, are the first winding 1, the second winding 2, and the third winding 3;

[0074] The middle layer consists of the fourth winding 4, the fifth winding 5, and the sixth winding 6, from top to bottom.

[0075] The outer layer, from top to bottom, consists of the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0076] Phase A coil, Phase B coil and Phase C coil are each composed of any 3 windings from the nine concentric windings connected in a forward series;

[0077] Furthermore, no two phase coils share any common windings.

[0078] The number of turns in each winding segment is the same.

[0079] In the radial direction, the radial spacing between adjacent windings is equal; in the axial direction, the axial spacing between adjacent windings is also equal.

[0080] Phase A coil is composed of the first winding 1, the second winding 2, and the third winding 3 connected in a forward series;

[0081] The B-phase coil is composed of the fourth winding 4, the fifth winding 5, and the sixth winding 6 connected in a forward series.

[0082] The C-phase coil is composed of the seventh winding 7, the eighth winding 8, and the ninth winding 9 connected in a forward series.

[0083] Example 4

[0084] like Figure 1 As shown, a high-power three-phase air-core reactor with adjustable coupling coefficient includes nine concentric windings, namely, the first winding 1, the second winding 2, the third winding 3, the fourth winding 4, the fifth winding 5, the sixth winding 6, the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0085] The axes of the nine concentric windings are all perpendicular to the ground;

[0086] The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom.

[0087] The inner layers, from top to bottom, are the first winding 1, the second winding 2, and the third winding 3;

[0088] The middle layer consists of the fourth winding 4, the fifth winding 5, and the sixth winding 6, from top to bottom.

[0089] The outer layer, from top to bottom, consists of the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0090] Phase A coil, Phase B coil and Phase C coil are each composed of any 3 windings from the nine concentric windings connected in a forward series;

[0091] Furthermore, no two phase coils share any common windings.

[0092] The number of turns in each winding segment is the same.

[0093] In the radial direction, the radial spacing between adjacent windings is equal; in the axial direction, the axial spacing between adjacent windings is also equal.

[0094] Phase A coil is composed of the first winding 1, the fifth winding 5, and the ninth winding 9 connected in a forward series;

[0095] The B-phase coil is composed of the second winding 2, the sixth winding 6, and the seventh winding 7 connected in a forward series.

[0096] The C-phase coil is composed of the third winding 3, the fourth winding 4, and the eighth winding 8 connected in a forward series.

[0097] Example 5

[0098] like Figure 1 As shown, a high-power three-phase air-core reactor with adjustable coupling coefficient includes nine concentric windings, namely, the first winding 1, the second winding 2, the third winding 3, the fourth winding 4, the fifth winding 5, the sixth winding 6, the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0099] The axes of the nine concentric windings are all perpendicular to the ground;

[0100] The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom.

[0101] The inner layers, from top to bottom, are the first winding 1, the second winding 2, and the third winding 3;

[0102] The middle layer consists of the fourth winding 4, the fifth winding 5, and the sixth winding 6, from top to bottom.

[0103] The outer layer, from top to bottom, consists of the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0104] Phase A coil, Phase B coil and Phase C coil are each composed of any 3 windings from the nine concentric windings connected in a forward series;

[0105] Furthermore, no two phase coils share any common windings.

[0106] The number of turns in each winding segment is the same.

[0107] In the radial direction, the radial spacing between adjacent windings is equal; in the axial direction, the axial spacing between adjacent windings is also equal.

[0108] Phase A coil is composed of the first winding 1, the second winding 2, and the sixth winding 6 connected in a forward direction;

[0109] The B-phase coil is composed of the fourth winding 4, the fifth winding 5, and the ninth winding 9 connected in a forward series.

[0110] The C-phase coil is composed of the third winding 3, the seventh winding 7, and the eighth winding 8 connected in a forward series.

[0111] Example 6

[0112] like Figure 1 As shown, a high-power three-phase air-core reactor with adjustable coupling coefficient includes nine concentric windings, namely, the first winding 1, the second winding 2, the third winding 3, the fourth winding 4, the fifth winding 5, the sixth winding 6, the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0113] The axes of the nine concentric windings are all perpendicular to the ground;

[0114] The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom.

[0115] The inner layers, from top to bottom, are the first winding 1, the second winding 2, and the third winding 3;

[0116] The middle layer consists of the fourth winding 4, the fifth winding 5, and the sixth winding 6, from top to bottom.

[0117] The outer layer, from top to bottom, consists of the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0118] Phase A coil, Phase B coil and Phase C coil are each composed of any 3 windings from the nine concentric windings connected in a forward series;

[0119] Furthermore, no two phase coils share any common windings.

[0120] The number of turns in each winding segment is the same.

[0121] In the radial direction, the radial spacing between adjacent windings is equal; in the axial direction, the axial spacing between adjacent windings is also equal.

[0122] Phase A coil is composed of the first winding 1, the fourth winding 4, and the seventh winding 7 connected in a forward series;

[0123] The B-phase coil is composed of the second winding 2, the fifth winding 5, and the eighth winding 8 connected in a forward series.

[0124] The C-phase coil is composed of the third winding 3, the sixth winding 6, and the ninth winding 9 connected in a forward series.

[0125] Example 7

[0126] like Figure 1 As shown, a high-power three-phase air-core reactor with adjustable coupling coefficient includes nine concentric windings, namely, the first winding 1, the second winding 2, the third winding 3, the fourth winding 4, the fifth winding 5, the sixth winding 6, the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0127] The axes of the nine concentric windings are all perpendicular to the ground;

[0128] The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom.

[0129] The inner layers, from top to bottom, are the first winding 1, the second winding 2, and the third winding 3;

[0130] The middle layer consists of the fourth winding 4, the fifth winding 5, and the sixth winding 6, from top to bottom.

[0131] The outer layer, from top to bottom, consists of the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0132] Phase A coil, Phase B coil and Phase C coil are each composed of any 3 windings from the nine concentric windings connected in a forward series;

[0133] Furthermore, no two phase coils share any common windings.

[0134] The number of turns in each winding segment is the same.

[0135] In the radial direction, the radial spacing between adjacent windings is equal; in the axial direction, the axial spacing between adjacent windings is also equal.

[0136] Phase A coil is composed of the first winding 1, the fourth winding 4, and the ninth winding 9 connected in a forward series;

[0137] The B-phase coil is composed of the second winding 2, the fifth winding 5, and the seventh winding 7 connected in a forward series;

[0138] The C-phase coil is composed of the third winding 3, the sixth winding 6, and the eighth winding 8 connected in a forward series.

[0139] Application Examples

[0140] like Figure 1 As shown, a high-power three-phase air-core reactor with adjustable coupling coefficient includes nine concentric windings, namely, the first winding 1, the second winding 2, the third winding 3, the fourth winding 4, the fifth winding 5, the sixth winding 6, the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0141] The axes of the nine concentric windings are all perpendicular to the ground;

[0142] The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom.

[0143] The inner layers, from top to bottom, are the first winding 1, the second winding 2, and the third winding 3;

[0144] The middle layer consists of the fourth winding 4, the fifth winding 5, and the sixth winding 6, from top to bottom.

[0145] The outer layer, from top to bottom, consists of the seventh winding 7, the eighth winding 8, and the ninth winding 9.

[0146] Each winding segment consists of 6×8 turns, with each turn measuring 24mm in height and 10mm in width. The radial and axial distances between each turn are both 5mm (i.e., within the same winding segment, the radial distance between two adjacent inner and outer turns is 5mm, and the axial distance between two adjacent upper and lower turns is 5mm). The inner and outer windings are 10mm apart (the distance between the inner and middle layers is 10mm, and the distance between the middle and outer layers is 10mm), and the upper and lower windings are 5mm apart (the distance between the upper and middle layers is 5mm, and the distance between the middle and lower layers is 5mm). The inner winding is 1000mm from the axis of symmetry. Figure 2 As shown.

[0147] Phase A, Phase B, and Phase C coils are each composed of any three windings from these nine winding segments connected in a forward series, with no two phase coils sharing a common winding. The mutual inductance coupling coefficient can be adjusted by changing the winding combination of each coil. Five combination schemes are given below, and the mutual inductance coupling coefficient is calculated using the finite element method.

[0148] Option 1:

[0149] Phase A coil is composed of the first winding 1, the second winding 2, and the third winding 3 connected in a forward series;

[0150] The B-phase coil is composed of the fourth winding 4, the fifth winding 5, and the sixth winding 6 connected in a forward series.

[0151] The C-phase coil is composed of the seventh winding 7, the eighth winding 8, and the ninth winding 9 connected in a forward series.

[0152] The coupling coefficients of the three sets of coils were determined through finite element simulation analysis, as shown in Table 1.

[0153] Table 1 Mutual Inductance Coupling Coefficients of Combination Scheme 1

[0154] Mutual inductance coupling coefficient <![CDATA[k AB ]]> <![CDATA[k BC ]]> <![CDATA[k AC ]]> numerical size 92.8％ 82.8％ 92.1％

[0155] Where, k AB This represents the coupling coefficient between phase A coil and phase B coil;

[0156] k BC This represents the coupling coefficient between phase B coil and phase C coil;

[0157] k AC This represents the coupling coefficient between phase A coil and phase C coil.

[0158] Combination Option Two:

[0159] like Figure 3 As shown, the A-phase coil is composed of the first winding 1, the fifth winding 5, and the ninth winding 9 connected in a forward series.

[0160] The B-phase coil is composed of the second winding 2, the sixth winding 6, and the seventh winding 7 connected in a forward series.

[0161] The C-phase coil is composed of the third winding 3, the fourth winding 4, and the eighth winding 8 connected in a forward series.

[0162] The coupling coefficients of the three sets of coils were determined through finite element simulation analysis, as shown in Table 2.

[0163] Table 2 Mutual Inductance Coupling Coefficients of Combination Scheme Two

[0164] Mutual inductance coupling coefficient <![CDATA[k AB ]]> <![CDATA[k BC ]]> <![CDATA[k AC ]]> numerical size 93.1％ 93.0％ 94.3％

[0165] Combination Scheme 3

[0166] Phase A coil is composed of the first winding 1, the second winding 2, and the sixth winding 6 connected in a forward direction;

[0167] The B-phase coil is composed of the fourth winding 4, the fifth winding 5, and the ninth winding 9 connected in a forward series.

[0168] The C-phase coil is composed of the third winding 3, the seventh winding 7, and the eighth winding 8 connected in a forward series.

[0169] The coupling coefficients of the three sets of coils were determined through finite element simulation analysis, as shown in Table 3.

[0170] Table 3 Mutual Inductance Coupling Coefficients of Combination Scheme 3

[0171] Mutual inductance coupling coefficient <![CDATA[k AB ]]> <![CDATA[k BC ]]> <![CDATA[k AC ]]> numerical size 93.0％ 88.8％ 92.5％

[0172] Combination Option 4:

[0173] Phase A coil is composed of the first winding 1, the fourth winding 4, and the seventh winding 7 connected in a forward series;

[0174] The B-phase coil is composed of the second winding 2, the fifth winding 5, and the eighth winding 8 connected in a forward series.

[0175] The C-phase coil is composed of the third winding 3, the sixth winding 6, and the ninth winding 9 connected in a forward series.

[0176] The coupling coefficients of the three sets of coils were determined through finite element simulation analysis, as shown in Table 4.

[0177] Table 4 Mutual Inductance Coupling Coefficients of Combination Scheme 4

[0178] Mutual inductance coupling coefficient <![CDATA[k AB ]]> <![CDATA[k BC ]]> <![CDATA[k AC ]]> numerical size 76.9％ 53.9％ 76.9％

[0179] Option 5:

[0180] Phase A coil is composed of the first winding 1, the fourth winding 4, and the ninth winding 9 connected in a forward series;

[0181] The B-phase coil is composed of the second winding 2, the fifth winding 5, and the seventh winding 7 connected in a forward series;

[0182] The C-phase coil is composed of the third winding 3, the sixth winding 6, and the eighth winding 8 connected in a forward series.

[0183] The coupling coefficients of the three sets of coils were determined through finite element simulation analysis, as shown in Table 5.

[0184] Table 5 Mutual Inductance Coupling Coefficients of Combination Scheme 5

[0185] Mutual inductance coupling coefficient <![CDATA[k AB ]]> <![CDATA[k BC ]]> <![CDATA[k AC ]]> numerical size 88.0％ 78.4％ 82.4％

[0186] As can be seen from Tables 1 to 5, the coupling coefficients between coils differ under different winding combinations, thus achieving the purpose of adjusting the mutual inductance coupling coefficient.

[0187] It should be understood that any parts not described in detail in this specification belong to the prior art.

[0188] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-power three-phase air-core reactor with adjustable coupling coefficient, characterized in that, It includes nine concentric windings, namely the first winding (1), the second winding (2), the third winding (3), the fourth winding (4), the fifth winding (5), the sixth winding (6), the seventh winding (7), the eighth winding (8), and the ninth winding (9). The axes of the nine concentric windings are all perpendicular to the ground; The cross-sectional area of ​​the nine windings forms a 3×3 matrix, which is divided into three layers from the inside out: the inner layer, the middle layer, and the outer layer. Each layer is divided into three cakes from top to bottom. The inner layer consists of the first winding (1), the second winding (2), and the third winding (3) from top to bottom. The middle layer consists of the fourth winding (4), the fifth winding (5), and the sixth winding (6) from top to bottom. The outer layer consists of the seventh winding (7), the eighth winding (8), and the ninth winding (9) from top to bottom. Phase A coil, Phase B coil and Phase C coil are each composed of any 3 windings from the nine concentric windings connected in a forward series; Furthermore, no two phase coils share any common windings.

2. The high-power three-phase air-core reactor with adjustable coupling coefficient according to claim 1, characterized in that, The number of turns in each winding segment is the same.

3. The high-power three-phase air-core reactor with adjustable coupling coefficient according to claim 1, characterized in that, In the radial direction, the radial spacing between adjacent windings is equal; in the axial direction, the axial spacing between adjacent windings is also equal.

4. The high-power three-phase air-core reactor with adjustable coupling coefficient according to claim 1, characterized in that, Phase A coil is composed of the first winding (1), the second winding (2), and the third winding (3) connected in a forward series; The B-phase coil is composed of the fourth winding (4), the fifth winding (5), and the sixth winding (6) connected in a forward series. The C-phase coil is composed of the seventh winding (7), the eighth winding (8), and the ninth winding (9) connected in a forward series.

5. The high-power three-phase air-core reactor with adjustable coupling coefficient according to claim 1, characterized in that, Phase A coil is composed of the first winding (1), the fifth winding (5), and the ninth winding (9) connected in a forward series; The B-phase coil is composed of the second winding (2), the sixth winding (6), and the seventh winding (7) connected in a forward series; The C-phase coil is composed of the third winding (3), the fourth winding (4), and the eighth winding (8) connected in a forward series.

6. The high-power three-phase air-core reactor with adjustable coupling coefficient according to claim 1, characterized in that, Phase A coil is composed of the first winding (1), the second winding (2), and the sixth winding (6) connected in a forward series; The B-phase coil is composed of the fourth winding (4), the fifth winding (5), and the ninth winding (9) connected in a forward series. The C-phase coil is composed of the third winding (3), the seventh winding (7), and the eighth winding (8) connected in a forward series.

7. The high-power three-phase air-core reactor with adjustable coupling coefficient according to claim 1, characterized in that, Phase A coil is composed of the first winding (1), the fourth winding (4), and the seventh winding (7) connected in a forward series; The B-phase coil is composed of the second winding (2), the fifth winding (5), and the eighth winding (8) connected in a forward series. The C-phase coil is composed of the third winding (3), the sixth winding (6), and the ninth winding (9) connected in a forward series.

8. The high-power three-phase air-core reactor with adjustable coupling coefficient according to claim 1, characterized in that, Phase A coil is composed of the first winding (1), the fourth winding (4), and the ninth winding (9) connected in a forward series; The B-phase coil is composed of the second winding (2), the fifth winding (5), and the seventh winding (7) connected in a forward series. The C-phase coil is composed of the third winding (3), the sixth winding (6), and the eighth winding (8) connected in a forward series.

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