Parametric modeling method, device and computer equipment for kinked transformer winding

Abstract

The application relates to a parameterized modeling method, device and computer equipment for a twisted transformer winding. The method comprises the following steps: obtaining initialization parameters of a pie-shaped winding; sequentially connecting main lines in a main line number-main line sleeve number mode; determining and correcting the motion trajectory of a wire turn in a wire pie based on a coordinate self-defined rule; based on the cross section of a wire, the motion trajectory of the wire turn is swept to obtain a three-dimensional wire turn entity; based on the number of backstepping generated when the motion trajectory is corrected, the start and end radian of the wire turn wound by the wire pie is corrected; the longitudinal coordinate of the wire turn wound by the wire pie is corrected; the outgoing head connection of the main line between the positive pie and the negative pie is performed, based on the cross section of the connecting wire, the motion trajectory of the connecting wire is swept, the sweeping result is integrated with the three-dimensional wire turn entity, and a double-wire pie three-dimensional entity is obtained. The method can efficiently and accurately complete the parameterized modeling of the twisted transformer winding.

Description

Technical Field

[0001] This application relates to the field of digital design and simulation technology for power equipment, and in particular to a parametric modeling method, apparatus and computer equipment for entangled transformer windings. Background Technology

[0002] As a core component of the power system, the performance of power transformers directly affects the safety and stability of the power grid. In the planning, fault handling, and equipment optimization of power systems, the analysis of the electromagnetic characteristics, mechanical deformation, and thermal effects of the entangled windings of power transformers all rely on high-precision simulation models.

[0003] In traditional technology, there are three types of modeling methods for entangled transformer windings. The first type is to manually draw the winding geometry model using CAD or 3D modeling software. The second type is to use the built-in tools of finite element software to model the winding. The third type is to use scripts to parametrically model the winding.

[0004] However, current modeling methods focus on the overall geometric parameters of the winding, making it difficult to describe the actual transposition method, double-panel combination, and actual process characteristics of the lead wires. This results in incomplete model structure description, low modeling efficiency, insufficient high-frequency adaptability, and weak parameter interpretability. Summary of the Invention

[0005] Therefore, it is necessary to provide a parametric modeling method, apparatus, and computer equipment for entangled transformer windings that can fully express the modeling process and improve modeling efficiency, in order to address the above-mentioned technical problems.

[0006] In a first aspect, this application provides a parameterization method for intertwined transformer windings, including:

[0007] Obtain the initialization parameters of the disc winding, including the main wire number;

[0008] Multiply the number of main lines by the number of tangled groups to get the number of main line sets in the line cake; for the Nth set of main lines, connect the main line numbered N and the main lines whose numbers are separated by the number of the preceding main lines in turn to obtain the number of main line sets in sequence.

[0009] Based on the custom coordinate rules, the motion trajectory of the coil in the coil is determined and the motion trajectory is corrected.

[0010] Based on the cross-section of the conductor corresponding to the coil, a sweep is performed along the movement trajectory of the coil to obtain a three-dimensional coil entity;

[0011] Based on the number of retractions generated during the correction of the motion trajectory, the starting arc and / or ending arc of the coil wound by the coil are corrected; the ordinate of the coil wound by the coil is corrected.

[0012] The main line is connected between the positive and negative pie discs respectively. Based on the cross-section of the conductor used for the connection, the motion trajectory of the connection line is swept. The sweeping result is integrated with the three-dimensional line coil entity to obtain the three-dimensional entity of the double-line pie disc.

[0013] In one embodiment, the initialization parameters further include unit radians; obtaining the initialization parameters of the disc winding includes:

[0014] Divide the circumference of the pancake winding into multiple arcs, and use each arc as a unit arc, with each unit arc corresponding to a unit position.

[0015] Number the main lines of the reversed pancake from the outside to the inside to obtain the main line number of the reversed pancake; number the main lines of the normal pancake from the inside to the outside to obtain the main line number of the normal pancake.

[0016] Starting from the inner diameter of the coil, the radial width of the material in the coil arrangement sequence is superimposed to obtain the starting winding point radius of the coil in the radial direction.

[0017] In one embodiment, the coordinate customization rules include setting the starting winding position of the first coil in the reverse disc to the first position, setting the interval between the starting winding positions of adjacent parallel main lines to the first position, connecting adjacent coils of the same set of main lines end to end, setting each coil to full-turn winding, and setting the same coil to no displacement in the axial direction.

[0018] Based on custom coordinate rules, the motion trajectory of the coils in the coil pie is determined, including:

[0019] The radial offset of the main line is obtained by superimposing the radial widths of each layer of material that the main line passes through in the radial direction;

[0020] The motion trajectory of the coil in the coil is determined based on the radial offset of the main line, the radius of the starting winding point of the coil in the coil disc in the radial direction, and the unit radian.

[0021] In one embodiment, the motion trajectory is corrected, including:

[0022] Add 1 to the total number of turns to be returned, obtain the first product between the summation result and the unit radian, and return the termination radian of the last turn of the main line to the corresponding radian of the first product in order to correct the movement trajectory of the turn.

[0023] In one embodiment, the starting and / or ending arc of the coil wound on the coil is corrected based on the number of retractions generated during the correction of the motion trajectory, including:

[0024] When there is a rollback in both the reverse and forward coils, obtain the sum of the rollback numbers corresponding to the rollback of the last turn wound in each coil. Multiply the sum by a unit radian to obtain a second product. Based on the second product, correct the starting and / or ending radians of each turn wound in the forward coil.

[0025] In one embodiment, the main line is connected between the positive and negative pie charts, including:

[0026] Based on the way the main lines are interchanged and arranged between the positive and negative cakes, the ending point of the main line in the negative cake is connected to the starting point of the main line in the positive cake by an arc.

[0027] In one embodiment, for two adjacent sets of double-line disc three-dimensional entities, the sum of the number of reductions corresponding to the arcs retreated by the last turn of the positive and negative discs wound in the previous set of double-line disc three-dimensional entities is calculated as the total number of reductions for the previous set; the sum of the number of reductions corresponding to the arcs retreated by the last turn of the positive and negative discs wound in the next set of double-line disc three-dimensional entities is calculated as the total number of reductions for the next set.

[0028] Calculate the sum of the total number of downshifts in the previous group and the total number of downshifts in the next group to obtain the sum; multiply the sum by the unit radians to obtain the third product;

[0029] Based on the third product, the starting radii and / or ending radii of each turn of the reversed disc in the next set of double-line disc 3D solids are corrected.

[0030] Based on the ordinate of the coils wound in the previous set of double-coil three-dimensional entities and the axial spacing between two adjacent sets of double-coil three-dimensional entities, the ordinate of the coils wound in the next set of double-coil three-dimensional entities is corrected.

[0031] Based on the main line interchange and arrangement method between the positive cake in the previous set of double-line cake 3D entities and the negative cake in the next set of double-line cake 3D entities, the starting point of the main line in the negative cake in the next set of double-line cake 3D entities is connected to the ending point of the main line in the positive cake in the previous set of double-line cake 3D entities by using an arc.

[0032] For the arc connecting two adjacent sets of double-line disc 3D entities, the cross-section of the conductor is determined according to the radial width and axial height of the conductor used for the arc. Based on the cross-section, a sweep is performed along the motion trajectory of the arc. The sweep result is compared with multiple double-line disc 3D entities to obtain a single-coil 3D entity.

[0033] In one embodiment, the origin of a three-dimensional rectangular coordinate system is determined, and based on the origin, the position of the point on the turn in the three-dimensional entity of a single coil is changed to be represented using three-dimensional rectangular coordinates;

[0034] Based on transformer design parameters, at least two single-coil three-dimensional entities are spatially located; wherein, the conditions for spatial location are that coils on different voltage sides of the same phase share the same center, and the center distance between coils that are not in the same phase is equal to the spacing between the main columns of the transformer core.

[0035] After spatial positioning is completed, the single-coil 3D entity is merged to obtain a multi-coil 3D entity.

[0036] Secondly, this application also provides a parametric modeling apparatus for entangled transformer windings, comprising:

[0037] The acquisition module is used to acquire the initialization parameters of the disc winding, including the main wire number.

[0038] The connection module is used to multiply the number of main wires in parallel by the number of tangled groups to obtain the number of main wire sets in the wire cake; for the Nth set of main wires, the main wire numbered N and the main wires whose numbers are separated by the number of the preceding main wires are connected in sequence.

[0039] The correction module is used to determine the motion trajectory of the coil in the pie based on the coordinate-defined rules, and to correct the motion trajectory.

[0040] The sweeping module uses the cross-section of the conductor corresponding to the coil and sweeps along the movement trajectory of the coil to obtain a three-dimensional coil entity;

[0041] The correction module is also used to correct the starting arc and / or ending arc of the coil wound by the coil based on the number of retractions generated when correcting the motion trajectory; and to correct the ordinate of the coil wound by the coil.

[0042] The sweeping module is also used to make lead-out connections between the positive and negative pie discs respectively. Based on the cross-section of the conductor used for the lead-out connection, it sweeps along the movement trajectory of the lead-out connection line and integrates the sweeping results with the three-dimensional line turn entity to obtain the three-dimensional entity of the double line pie disc.

[0043] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0044] Obtain the initialization parameters of the disc winding, including the main wire number;

[0045] Multiply the number of main lines by the number of tangled groups to get the number of main line sets in the line cake; for the Nth set of main lines, connect the main line numbered N and the main lines whose numbers are separated by the number of the preceding main lines in turn to obtain the number of main line sets in sequence.

[0046] Based on the custom coordinate rules, the motion trajectory of the coil in the coil is determined and the motion trajectory is corrected.

[0047] Based on the cross-section of the conductor corresponding to the coil, a sweep is performed along the movement trajectory of the coil to obtain a three-dimensional coil entity;

[0048] Based on the number of retractions generated during the correction of the motion trajectory, the starting arc and / or ending arc of the coil wound by the coil are corrected; the ordinate of the coil wound by the coil is corrected.

[0049] The main line is connected between the positive and negative pie discs respectively. Based on the cross-section of the conductor used for the connection, the motion trajectory of the connection line is swept. The sweeping result is integrated with the three-dimensional line coil entity to obtain the three-dimensional entity of the double-line pie disc.

[0050] The parameterization method, apparatus, and computer equipment for the aforementioned entangled transformer windings obtain the initialization parameters of the pancake winding, including the main line number; multiply the number of parallel main lines by the number of entangled groups to obtain the number of main line sets within the pancake; for the Nth set of main lines, sequentially connect the main line numbered N and the main lines whose numbers are spaced apart from the preceding main lines by the number of main line sets; determine the motion trajectory of the turns in the pancake based on a custom coordinate rule, and correct the motion trajectory; based on the cross-section of the conductor used for the turns, sweep along the motion trajectory of the turns to obtain a three-dimensional turn entity; based on the number of retractions generated during the correction of the motion trajectory, correct the starting arc and / or ending arc of the turns wound in the pancake; correct the ordinate of the turns wound in the pancake; connect the main lines to the positive and negative pancakes respectively, and based on the cross-section of the conductor used for the connection, sweep along the motion trajectory of the connection line, and integrate the sweeping result with the three-dimensional turn entity to obtain a two-pancake three-dimensional entity. The above-described process of obtaining the 3D solid model of the double-circuit plate comprehensively considers the complex structure of the transformer's tangled windings from the turn level to the plate level. By obtaining the initialization parameters of the tangled windings, determining the connection method of the main lines within the plate based on the main line number, and correcting the motion trajectory of the turns within the plate, the constructed tangled plate solid model is made more accurate, reliable, and interpretable. Furthermore, based on the connection method of the main lines between the plates and the corrected plate model coordinates, the 3D solid model of the double-circuit plate is obtained. The above scheme, by refining the tangled transformer winding model down to the turn level, enables the model to adapt to high frequencies, improves its practicality, and achieves efficient and accurate complete parametric modeling of tangled transformer windings. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a diagram illustrating the application environment of a parametric modeling method for a tangled transformer winding in one embodiment.

[0053] Figure 2 This is a flowchart illustrating a parametric modeling method for a tangled transformer winding in one embodiment.

[0054] Figure 3 This is a given form of the arrangement order of the lines within the space in one embodiment;

[0055] Figure 4 This is a schematic diagram of the inter-panel connection method when the wire transposition method is 1 and the flower arrangement method is 1 in one embodiment;

[0056] Figure 5 This is a schematic diagram of the inter-panel connection method when the wire transposition method is 2 and the flower arrangement method is 1 in one embodiment;

[0057] Figure 6 This is a schematic diagram of the inter-panel connection method when the wire transposition method is 1 and the flower arrangement method is 2 in one embodiment;

[0058] Figure 7 This is a schematic diagram of the connection method between the two parts of the cake when the wire transposition method is 2 and the flower arrangement method is 2 in one embodiment;

[0059] Figure 8 A flowchart illustrating the parametric modeling of a tangled transformer winding in another embodiment;

[0060] Figure 9 This is an example diagram showing the arrangement order and wire numbering within a tangled reverse pie space in one embodiment;

[0061] Figure 10 This is an example diagram showing the arrangement order and wire numbering within a tangled pie chart space in one embodiment;

[0062] Figure 11 A structural block diagram of a parametric modeling device for a tangled transformer winding in one embodiment;

[0063] Figure 12 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0065] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0066] The parameterization method for entangled transformer windings provided in this application embodiment can be applied to, for example... Figure 1 In the application environment shown, terminal 102 communicates with server 104 via a network. A data storage system can store the data that server 104 needs to process. The data storage system can be integrated onto server 104 or located on a cloud or other network server. Specifically, terminal 102 or server 104 completes a parametric modeling method for a tangled transformer winding, which includes:

[0067] Obtain the initialization parameters of the disc winding, including the main wire number;

[0068] Multiply the number of main lines by the number of tangled groups to get the number of main line sets in the line cake; for the Nth set of main lines, connect the main line numbered N and the main lines whose numbers are separated by the number of the preceding main lines in turn to obtain the number of main line sets in sequence.

[0069] Based on the custom coordinate rules, the motion trajectory of the coil in the coil is determined and the motion trajectory is corrected.

[0070] Based on the cross-section of the conductor corresponding to the coil, a sweep is performed along the movement trajectory of the coil to obtain a three-dimensional coil entity;

[0071] Based on the number of retractions generated during the correction of the motion trajectory, the starting arc and / or ending arc of the coil wound by the coil are corrected; the ordinate of the coil wound by the coil is corrected.

[0072] The main line is connected between the positive and negative pie discs respectively. Based on the cross-section of the conductor used for the connection, the motion trajectory of the connection line is swept. The sweeping result is integrated with the three-dimensional line coil entity to obtain the three-dimensional entity of the double-line pie disc.

[0073] Terminal 102 can be, but is not limited to, various personal computers, laptops, smartphones, tablets, drones, low-altitude aircraft, IoT devices, and portable wearable devices. IoT devices can include smart speakers, smart TVs, smart air conditioners, smart in-vehicle devices, and projection equipment. Portable wearable devices can include smartwatches, smart bracelets, and head-mounted displays. Head-mounted displays can be virtual reality (VR) devices, augmented reality (AR) devices, and smart glasses. Server 104 can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.

[0074] In one exemplary embodiment, such as Figure 2 As shown, a parametric modeling method for entangled transformer windings is provided, which is then applied to... Figure 1 Taking the terminal in the example, the explanation includes the following steps 202 to 212. Wherein:

[0075] Step 202: Obtain the initialization parameters of the disc winding, including the main wire number.

[0076] Among them, the disc winding refers to winding the main wire one turn after another to form a disc. The number of turns of the disc is determined according to the number of turns wound. Then the discs are stacked along the axial direction of the transformer core column, and the discs are transitioned to each other by arcs.

[0077] For example, the main lines of each pie are defined with a number. Specifically, the main lines of each pie are numbered, with the numbering range from 1 to the number of main line turns of the current pie. For a reverse pie, the main line numbering is defined from the outermost turn to the innermost turn of the pie; for a normal pie, the main line numbering is defined from the innermost turn to the outermost turn of the pie.

[0078] For example, the centers of the multiple turns that make up the coil are the same, and the radius of the starting winding point of the coil in the radial direction is determined according to the position of the center and the starting turn of the coil.

[0079] Step 204: Multiply the number of main lines by the number of tangled groups to obtain the number of main line sets in the line cake; for the Nth set of main lines, connect the main line numbered N and the main lines whose numbers are separated from the previous main lines by the number of main line sets in sequence.

[0080] For example, a twisted winding has multiple bi-ply coils, each containing one positive coil and one negative coil. During the modeling of one bi-ply coil in the twisted winding, if the first coil is negative and the second is positive, a portion of the negative coil's turns are first obtained by winding with the main wire. Then, an arc is used to transition to the positive coil, and a portion of the positive coil's turns are obtained by winding with the main wire. This process is repeated, until the number of turns in each coil of the bi-ply coil equals the total number of turns in the coil.

[0081] For example, each yarn disc is composed of multiple main yarns wound in parallel, depending on the number of main yarns wound in parallel. The total number of turns of the coil is determined by the number of turns wound on each main wire. When the number of tangled groups is 2, that is, when each thread pie contains its own pie group and tangled groups, the main thread is wound in parallel several times. Multiply by 2 to get the number of main thread nests within the thread pancake, that is, the number of main thread nests within the thread pancake is... For the Nth main storyline, the main storyline numbered N is combined with the main storyline numbered... The main lines are connected sequentially.

[0082] When a coil is wound for the first time, the number of main coil wraps at this time is... When the coil is wound a second time, the number of main wires wound at this time is also [number missing]. Thus, the number of main threads within the line cake is obtained. .

[0083] Step 206: Based on the coordinate custom rules, determine the motion trajectory of the coil in the coil and correct the motion trajectory.

[0084] For example, using cylindrical coordinates as a description method for the start and end coordinates of the main line in the line disc includes the radians corresponding to the start and end positions. and the distance between the starting and ending positions and the center of the circle. .

[0085] Specifically, the correction of the motion trajectory includes based on Correct the starting position of the main wire in the winding disc; determine the radial offset of the starting and ending coordinates of each turn of the main wire in the winding disc according to the connection scheme and material type of the main wire, and then correct the starting and ending coordinates of each turn of the main wire in the winding disc; correct the ending point coordinates of the last turn of each set of main wires according to the number of unwinding.

[0086] Among them, the number of gears to be removed refers to the difference between the number of gears at the end of a full turn and the number of gears at the end point of the last turn when the last turn of each main line is not a full turn.

[0087] Step 208: Based on the cross-section of the conductor corresponding to the coil, sweep along the movement trajectory of the coil to obtain a three-dimensional coil entity.

[0088] For example, the radial width and axial height of the conductor are determined according to the conductor material used for the main coil, thereby determining the cross-section of the conductor. Based on the cross-section, a three-dimensional coil entity is constructed along the two-dimensional motion trajectory of the coil, thereby obtaining the three-dimensional entity of the coil disc.

[0089] Step 210: Based on the number of retractions generated during the correction of the motion trajectory, correct the starting arc and / or ending arc of the coil wound by the coil; correct the ordinate of the coil wound by the coil.

[0090] For example, the pancake winding of a transformer consists of at least one coil, which in turn consists of at least one double-coil pancake, which is composed of a positive pancake and a negative pancake. When the number of turns unwinding in the first pancake of a coil is not zero, the radian coordinates of the start and end points of all main turns of the second pancake of that coil are... All of these need to be corrected.

[0091] For example, the ordinates of the start and end points of the positive and negative discs of the coil are... When both are 0, i.e., when the two discs are at the same vertical height, the distance between the discs is determined by... The ordinate of the starting and ending points of all main line turns in the pie chart model Make corrections.

[0092] Step 212: Connect the main line to the positive and negative pie respectively. Based on the cross-section of the conductor used for the connection, sweep along the movement trajectory of the connection line. Integrate the sweeping result with the three-dimensional coil entity to obtain the three-dimensional entity of the double pie.

[0093] For example, according to the conductor transposition method, the coordinates of the last group of parallel-wound main wire termination point of the first coil of the coil and the coordinates of the first group of parallel-wound main wire starting point of the second coil of the coil are connected using an arc-shaped coil model. Here, the last group of parallel-wound main wire refers to the last turn of all parallel-wound main wires in the coil, and the first group of parallel-wound main wires refers to the first turn of all parallel-wound main wires in the coil.

[0094] For example, the cross-section of the connecting line is determined based on the radial width and axial height of the main connecting line between the positive and negative pie. Based on the cross-section, a three-dimensional connecting line entity is constructed along the two-dimensional motion trajectory of the connecting line, and integrated with the three-dimensional line coil entity to obtain a two-dimensional pie entity.

[0095] In the parametric modeling method for the aforementioned entangled transformer winding, the initialization parameters of the pancake winding are obtained, including the main line number. The number of parallel main lines is multiplied by the number of entangled groups to obtain the number of main line sets within the pancake. For the Nth set of main lines, the main line numbered N and the main lines whose numbers are spaced apart from the preceding main lines are connected sequentially. Based on the coordinate custom rules, the motion trajectory of the turns in the pancake is determined and corrected. Based on the cross-section of the conductor used for the turns, the motion trajectory of the turns is swept to obtain a three-dimensional turn entity. Based on the number of retractions generated when correcting the motion trajectory, the starting arc and / or ending arc of the turns wound in the pancake are corrected. The ordinate of the turns wound in the pancake is corrected. The main lines are connected to the front and back pancakes respectively. Based on the cross-section of the conductor used for the connection, the motion trajectory of the connection line is swept, and the sweeping result is integrated with the three-dimensional turn entity to obtain a two-pancake three-dimensional entity. The above-described process of obtaining the 3D solid model of the double-circuit plate comprehensively considers the complex structure of the transformer's tangled windings from the turn level to the plate level. By obtaining the initialization parameters of the tangled windings, determining the connection method of the main lines within the plate based on the main line number, and correcting the motion trajectory of the turns within the plate, the constructed tangled plate solid model is made more accurate, reliable, and interpretable. Furthermore, based on the connection method of the main lines between the plates and the corrected plate model coordinates, the 3D solid model of the double-circuit plate is obtained. The above scheme, by refining the tangled transformer winding model down to the turn level, enables the model to adapt to high frequencies, improves its practicality, and achieves efficient and accurate complete parametric modeling of tangled transformer windings.

[0096] In one embodiment, the initialization parameters further include unit radians; obtaining the initialization parameters of the disc winding includes: dividing the corresponding circumference of the disc winding turns into multiple radians, taking each radian as a unit radian, and each unit radian corresponding to a unit position; numbering the main lines of the reverse disc from the outside to the inside of the disc to obtain the main line number of the reverse disc; numbering the main lines of the positive disc from the inside to the outside of the disc to obtain the main line number of the positive disc; and starting from the inner diameter of the disc, superimposing the material width in the disc arrangement sequence to obtain the radial starting point radius of the turns in the disc.

[0097] For example, during the manufacturing process of the disc winding, based on the state of the coils of the disc winding, and since the coils are circumferential, support bars are used to divide the circumference into equal segments, with each segment corresponding to a certain arc. That is, the unit is radians. Each setting corresponds to radians. The calculation formula is:

[0098]

[0099] For example, the transformer's intertwined winding is constructed by alternating stacks of multiple positive and negative coils. The parameters of both the positive and negative coils are obtained at once, including the number of turns, the intertwined winding code, the arrangement order within the coil space, the radial and axial dimensions of each main wire in the coil, and the inner and outer radii of the coil. The intertwined winding code includes the number of interlacing turns, the transposition method of each main wire in the coil, the number of intertwined groups, the number of turns of the parallel-wound main wires, the paired winding marker, and the number of parallel-wound conductors.

[0100] The number of interlacing lines refers to the alternating arrangement of the main parallel lines during the second winding of the yarn disc compared to the first winding. The number of interlacing lines is determined by the number of alternating lines. Furthermore, the main parallel lines during the first winding of the yarn disc are defined as the "yarn group," and the main parallel lines during the second winding of the yarn disc are defined as the "entanglement group."

[0101] Furthermore, the arrangement order within the space of the line disc is as follows: Figure 3 The table shows the given format. Each cell code represents a type of material, and the table from left to right corresponds to the material arrangement of the coil from the inside out. The first character of each cell code indicates the material type; the materials within the pie are main lines (w), shaft oil channels (c), and fillers (f). The second character of each cell code indicates the subclass of that material, such as main line type 1 (w1). (The rest of the text is incomplete and requires further context.) Figure 3 Based on this, the radial and axial dimensions of the corresponding material, as well as the material parameters, should also be provided. Material parameters include relative permittivity, relative permeability, and electrical conductivity. The arrangement order within each disc space should correspond one-to-one with the parameters of the corresponding material, as shown in the example table in Table 1.

[0102] Table 1

[0103]

[0104] For example, whether a coil is a coiled coil can be identified based on its twisted winding code. The twisted coil winding code consists of 6 numbers, 6 symbols, and 1 letter, and can be represented as follows:

[0105]

[0106] in, , , , , 'f' represents the 6 digits of the code for twisted coil winding. "", "", "", " " " " " " " " " " " " " " " """"" "" " ... It represents a single letter in the code for tangled thread twisting.

[0107] Specifically, This is the number of flowers to be arranged; if there are no flowers, then... The value equals 1. If there are interlacing turns, the number of turns is determined by the alternating arrangement of the thread turns between this pie group and the tangled group. When i turns are interlaced... Let i+1; The numbers represent the main line transposition method. If all numbers are transposed, then... Equal to the number of turns; To determine the number of groups, there are generally 2 groups, namely the original pie group and the reverse pie group; The number of turns to be wound together for this disc group and the tangled group; To determine whether the windings are always paired, A value of 0 indicates that this group of discs and the reverse group of discs are wound together. A value of 1 indicates the existence of a single-piece or reverse-piece group; f represents the number of wires wound in the single-piece or reverse-piece group. (Letter) The representative thread is a tangled thread; "", The symbol “” is a pre-defined symbol and has no real meaning.

[0108] For example, the coils of the coil are concentric, dividing the circumference into multiple arcs, and each arc is used as a unit arc and corresponds to a unit level, thereby obtaining the number of levels and the arc corresponding to each level. Define a number for the main line turns of each pie. The main line turns can be numbered using numbers such as 1, 2, 3, etc. The main line turns of the reverse pie are numbered from the outside to the inside, and the main line turns of the positive pie are numbered from the inside to the outside.

[0109] For example, starting from the inner diameter of the coil, the radial radius of the starting winding point of each coil in the coil is obtained according to the arrangement order within the coil space and the width of each coil material. Here, the inner diameter of the coil is the distance from the center to the starting or ending winding point of the innermost coil.

[0110] In this embodiment, by calculating the radian corresponding to each level, defining the number of the main line, and obtaining the starting winding point radius of the coil according to the arrangement order in the coil space, the coil-level structure of the transformer's tangled winding can be simulated in a refined manner, thereby providing accurate and reliable data support for subsequent tangled windings and improving the accuracy of parametric modeling of transformer tangled windings.

[0111] In one embodiment, the coordinate customization rules include setting the starting winding position of the first turn in the reverse disc to the first setting, setting the interval between the starting winding positions of adjacent parallel main lines to the first setting, connecting adjacent turns of the same main line end to end, setting each turn to full-turn winding, and setting the same turn to no displacement in the axial direction. Based on the coordinate customization rules, the motion trajectory of the turns in the disc is determined, including: superimposing the radial width of each layer of material that the main line passes through in the radial direction to obtain the radial offset of the main line; and determining the motion trajectory of the turns in the disc based on the radial offset of the main line, the radius of the starting winding point of the turn in the disc in the radial direction, and the unit radian.

[0112] For example, the coil is composed of multiple main wires wound in parallel. The starting winding position of the first turn of the first main wire in the coil is set to position 1, and the interval between the starting winding positions of adjacent parallel main wires is set to position 1. Specifically, the starting winding position of the first turn of the second main wire adjacent to the first main wire is set to position 2, and the starting winding positions of the other parallel main wires are set sequentially.

[0113] For example, each wire turn is set to full-turn winding, and the same wire turn is set to no displacement in the axial direction, based on the number of parallel windings of the main wire. The total number of turns of the coil is determined by the number of turns wound on each main wire. , and wrap the main line around several Multiply by 2 to get the number of main thread nests within the thread pancake, that is, the number of main thread nests within the thread pancake is... The adjacent turns of the same main line are connected end to end, and the connection scheme is shown in Table 2.

[0114] Table 2

[0115]

[0116] For example, the offset of each turn of the main line is determined based on the spatial arrangement order within the coil and the width of each material in the coil. Specifically, the radial offset of the main line is obtained by superimposing the widths of each layer of material that the main line passes through in the radial direction. That is, when the main line is numbered X, there are multiple turns between this main line and the main line numbered 1. The widths of these multiple turns are superimposed to obtain the radial offset of the main line numbered X. Then, based on the radial offset of the main line, the radius of the starting winding point of the coil in the coil in the radial direction, and the unit radian, the movement trajectory of the coil in the coil is determined.

[0117] In this embodiment, by defining coordinate rules and determining the motion trajectory of the coils in the coil pie based on the custom coordinate rules, the accuracy of each coil model in the coil pie can be improved, thereby enhancing the accuracy and reliability of the entire modeling process.

[0118] In one embodiment, correcting the motion trajectory includes: adding 1 to the total number of turns to be reversed, obtaining a first product between the summation result and the unit radian, and reversing the termination radian of the last turn of the main line to the radian corresponding to the first product, so as to correct the motion trajectory of the turn.

[0119] For example, when the last turn of each main line is not a full turn, the trajectory of the turn is corrected. Based on the number of turns removed, the radian coordinates of the termination point of the last turn of each main line are corrected. Specifically, it is expressed as:

[0120]

[0121] in, , These are the radian coordinates of the termination point of the last turn of each main line before and after the correction. For each gear, the corresponding radian. This represents the number of files rejected.

[0122] In this embodiment, the termination coordinates of the last turn of the main line in the coil are corrected by the number of gears, the radian corresponding to each gear, and the number of gears to be degraded. This can accurately simulate the position of each turn of the coil in the winding of the twisted transformer, thereby improving the accuracy and reliability of the coil model.

[0123] In one embodiment, the starting arc and / or ending arc of the coil wound by the coil is corrected based on the number of retractions generated when correcting the motion trajectory. This includes: when there is retraction in both the reverse and forward coils, obtaining the sum of the retraction numbers corresponding to the arc retraction of the last coil wound by the forward and reverse coils, multiplying the sum by a unit arc to obtain a second product; and correcting the starting arc and / or ending arc of each coil wound by the forward coil according to the second product.

[0124] For example, a double-line coil consists of two coils, a positive coil and a negative coil, connected together. If the first coil in this double-line coil is a negative coil, the second coil is a positive coil, and the positive and negative coils are connected by an arc. When the retraction count of the negative coil is not zero, the retraction counts of the negative and positive coils are combined, and the actual retraction occurs at the outermost coil of the positive coil. Simultaneously, the radian coordinates of the start and end points of all main coil coils in the positive coil are corrected. , can be represented as:

[0125]

[0126] in, and These are the radian coordinates of the start and end points of all main line turns in the positive disc before and after correction. For each gear, the corresponding radian. To reverse the number of rounds, This is the number of times the cake is removed from the correct grade.

[0127] Specifically, when the number of retractions in the reverse pancake pattern is not zero, the first transition from the reverse pancake's own pancake group to the positive pancake's own pancake group involves the radian coordinates of the start and end points of all main line turns within the positive pancake's own pancake group. All of these will change. At this point, when transitioning from the positive cake group to the original negative cake, the radian coordinates of the starting and ending points of the main line turns of the entangled group in the negative cake will change. All of these will also change. When the second transition from the entanglement group of the reverse pie chart to the entanglement group of the forward pie chart, the radian coordinates of the starting and ending points of the main line turns in the entanglement group of the forward pie chart will change. This will also change accordingly. Therefore, it is necessary to adjust the radian coordinates of the start and end points of all main line turns in the positive disc based on the number of retractions in the reverse and positive discs. .

[0128] In this embodiment, by correcting the starting and ending arc coordinates of each turn of the winding of the positive and negative transformers by adjusting the number of unwinding turns of the negative and positive transformers, the effect of fine simulation of the winding structure of each coil of the entangled transformer can be achieved, thereby improving the accuracy of parametric modeling of the entangled transformer winding.

[0129] In one embodiment, the main line is connected between the positive and negative cakes, including: according to the main line swapping and interlacing method between the positive and negative cakes, the end point of the main line in the negative cake is connected to the beginning point of the main line in the positive cake by an arc.

[0130] For example, based on the wire transposition method and the interlacing method, the arc-shaped wire model is used to connect and correct the wires of the reverse and forward discs in the double discs. The connection involves two sets of wire connections: connecting the coordinates of the last group of parallel wires ending at the end of the reverse disc and the coordinates of the coordinates of the first group of parallel wires starting at the end of the forward disc; and connecting the coordinates of the coordinates of the next group of parallel wires ending at the end of the reverse disc and the coordinates of the coordinates of the second group of parallel wires starting at the end of the forward disc. The correction involves two sets of wire connections: connecting the coordinates of the first group of parallel wires starting at the end of the reverse disc and the coordinates of the next group of parallel wires ending at the end of the forward disc; and connecting the coordinates of the second group of parallel wires starting at the end of the reverse disc and the coordinates of the last group of parallel wires ending at the end of the forward disc. The values ​​for the wire transposition method and the interlacing method range from 1 to the number of parallel wires. The connection method of the main wire exit between wire discs corresponds to the connection method of wire transposition as follows: Figures 4 to 7 As shown.

[0131] For example, when the wire numbers for both the positive and negative discs are between 1 and 8, that is, when the number of parallel wires in both the disc group and the tangled group of the positive and negative discs are 2, then when the representative number for the wire transposition method is 1 and the representative number for the wire interlacing method is 1, the connection method between the discs is as follows: Figure 4 As shown; when the representative number for the wire transposition method is 2 and the representative number for the wire interlacing method is 1, the connection method between the two ends is as follows. Figure 5 As shown; when the representative number for the wire transposition method is 1 and the representative number for the wire interlacing method is 2, the connection method between the two ends is as follows. Figure 6 As shown; when the representative number for the wire transposition method is 2 and the representative number for the wire interlacing method is 2, the connection method between the two ends is as follows. Figure 7 As shown.

[0132] In the diagram, the wires numbered 5, 6, 7, and 8 for the reversed pancake and 1, 2, 3, and 4 for the regular pancake represent one group from the pancake group and one group from the tangled group of the respective pancake and reversed pancake, both wound around the main line. The wires numbered 5, 6, 7, and 8 for the regular pancake and 1, 2, 3, and 4 for the reversed pancake represent another group from the pancake group and one group from the tangled group of the respective pancake and reversed pancake, both wound around the main line. Figure 4 , Figure 5 , Figure 6 as well as Figure 7 Introducing an arc connection scheme between the positive and negative pie models.

[0133] In this embodiment, by transposing the wires and using a staggered connection method to connect the main wires between the coils, the relative positions and connection relationships between the positive and negative coils in the winding of a tangled transformer can be accurately simulated, thus reproducing the complex structure and improving the accuracy and reliability of the entire modeling process.

[0134] In one embodiment, for two adjacent sets of double-line disc 3D entities, the sum of the number of radians retracted from the final turn of the last coil wound in the positive and negative discs of the previous set of double-line disc 3D entities is calculated as the total number of radians retracted in the previous set; the sum of the number of radians retracted from the final turn of the last coil wound in the positive and negative discs of the next set of double-line disc 3D entities is calculated as the total number of radians retracted in the next set; the sum of the total number of radians retracted in the previous set and the total number of radians retracted in the next set of double-line disc 3D entities is calculated as the total number of radians retracted in the next set of double-line disc 3D entities; the sum of the total number of radians retracted in the previous set and the total number of radians retracted in the next set of double-line disc 3D entities is calculated as the total number of radians retracted in the previous set of double-line disc 3D entities; the sum of the total number of radians retracted in the previous set of double-line disc 3D entities is calculated as the total number of radians retracted in the next ... The ordinate of the turn and the axial spacing between two adjacent sets of double-circle three-dimensional entities are used to correct the ordinate of the turns wound in the next set of double-circle three-dimensional entities. Based on the main line transposition and interlacing method between the positive and negative lines in the previous set of double-circle three-dimensional entities and the negative line in the next set of double-circle three-dimensional entities, the starting point of the main line in the negative line in the next set of double-circle three-dimensional entities is connected to the ending point of the main line in the positive line in the previous set of double-circle three-dimensional entities by an arc. For the arc connecting two adjacent sets of double-circle three-dimensional entities, the cross-section of the conductor is determined according to the radial width and axial height of the conductor used in the arc. Based on the cross-section, the arc is swept along its trajectory. The sweeping result is compared with multiple double-circle three-dimensional entities to obtain a single-coil three-dimensional entity.

[0135] For example, a single coil is composed of multiple positive and negative coils connected alternately, and each group of double coils contains one positive and one negative coil. Double coil models 1-2, 3-4, 5-6, etc. are constructed sequentially from top to bottom, and the modeling of all coils in the single coil is completed.

[0136] Specifically, if the first coil of the first double-coil pattern is a reverse pattern and the second coil of the first double-coil pattern is a regular pattern, after completing the modeling of the three-dimensional entity of the first double-coil pattern, the sum of the number of arcs that the last turn of the regular and reverse coils wound in the three-dimensional entity of the first double-coil pattern is calculated as the total number of arcs for the first group; the sum of the number of arcs that the last turn of the regular and reverse coils wound in the three-dimensional entity of the next double-coil pattern is calculated as the total number of arcs for the next group; the sum of the total number of arcs for the first group and the total number of arcs for the next group is calculated to obtain the sum value.

[0137] Specifically, the sum is multiplied by a unit radian to obtain the product. Based on the product, the starting and ending radians of each turn of the reversed disc in the next set of double-line disc 3D solids are corrected. The same process is repeated to correct the starting and ending radians of each turn of other double-line discs.

[0138] Specifically, based on the ordinate of the coil in the first set of double-line discs and the axial spacing between the three-dimensional entities of two adjacent sets of double-line discs, the ordinate of the coil in the next set of double-line discs is corrected. According to the transposition and interlacing methods of the wires between the double-line discs, an arc is used to connect the starting point of the main line in the reverse disc of the next set of double-line discs to the ending point of the main line in the positive disc of the previous set of double-line discs. The transposition and interlacing methods of the wires in the positive and reverse discs between each set of double-line discs can be different.

[0139] For example, the cross-section of the conductor is determined based on the arc connecting two adjacent sets of double-line piece three-dimensional entities and the radial width and axial height of the conductor used for the arc. Based on the cross-section, a sweep is performed along the motion trajectory of the arc. The sweep result is compared with multiple double-line piece three-dimensional entities to obtain a single-coil three-dimensional entity.

[0140] In this embodiment, a single coil model is obtained by using the modeling parameters of the previous set of coils and the wire connection and interlacing methods between the two coils. This model can accurately simulate the effect of the internal structure of the coil in the tangled transformer winding, which helps to accurately construct the complex structure of the tangled transformer winding coil.

[0141] In one embodiment, the origin of a three-dimensional rectangular coordinate system is determined, and based on the origin, the position of the point on the turn in the single-coil three-dimensional entity is changed to be represented using three-dimensional rectangular coordinates; based on the transformer design parameters, at least two single-coil three-dimensional entities are spatially positioned; wherein, the conditions for spatial positioning satisfy that the coils on different voltage sides of the same phase share the same center, and the center distance between the coils that are not in the same phase is equal to the spacing between the main columns of the transformer core; the single-coil three-dimensional entities after spatial positioning are merged to obtain a multi-coil three-dimensional entity.

[0142] For example, a tangled transformer may have multi-phase coils, each phase coil being a single coil, and the model of the multi-phase coils is obtained based on the single coils. Specifically, the coordinates of the start and end points of all turns of the transformer coil should be transformed from the cylindrical coordinate system to the rectangular coordinate system, with the origin of the coordinate axes being the intermediate phase, the center point, and the upper surface of the lower yoke of the core. Based on the transformer design parameters, at least two single-coil three-dimensional entities are spatially located. Based on the single-coil modeling, a complete transformer winding model is constructed according to the number of single-phase coils, the number of phases, the spacing between the main columns of the core, and the coil height. Coils on different voltage sides of the same phase share the same center, and the center distance between coils of different phases is equal to the spacing between the main columns of the transformer core. The single-coil three-dimensional entities after spatial positioning are merged to obtain the multi-coil three-dimensional entities.

[0143] In this embodiment, multi-coil models are modeled based on single-coil models, which can achieve the effect of accurately constructing multi-coil models. It fully considers the relative positional relationship between multiple coils in the transformer entangled winding and ensures the accurate position of each coil in the overall structure.

[0144] like Figure 8 As shown, a specific embodiment illustrates a parametric modeling method for entangled transformer windings, including steps 802 to 810. Wherein,

[0145] Step 802: Identify the tangled winding based on the obtained parameters of the disc winding, and calibrate the obtained parameters.

[0146] Specifically, the parameters of the two coils (positive and negative) are obtained at one time, including the number of turns, the tangled winding code (the tangled winding code includes the number of interlacing, the transposition method of each main wire in the coil, the number of tangled groups, the number of turns of the parallel main wire, the pair winding flag, and the number of parallel windings of the conductors), the radial and axial dimensions of each main wire in the coil, and the inner and outer radii of the coil. Then, the tangled winding code is used to identify whether the obtained coil is a tangled coil.

[0147] Specifically, the acquired parameters are checked, including: a) whether both the reverse and forward coils are entangled; b) whether the number of coil turns obtained based on the entangled winding code (i.e., "number of entangled groups × number of turns in this reverse coil + number of paired winding flags) × number of parallel windings of conductors" is equal to the number of main wires in the arrangement sequence table; c) whether the number of parallel windings of the main wires in the reverse and forward coils is consistent; d) whether the difference between the outer and inner diameters of each coil in the coil is equal to the sum of the radial widths of all materials in each coil; e) whether the conductor types of the main wires in the coil are all of the same type; f) whether the conductor transposition method of the reverse and forward coils is consistent; g) whether the conductor interleaving method of the reverse and forward coils is consistent.

[0148] Step 804: Initialize the parameters of the obtained disc winding and determine the connection scheme of the main wire in each disc.

[0149] Specifically, in the manufacturing process of the disc winding, support bars are used to divide the circumference into equal segments, with each segment corresponding to a certain arc. That is, the unit is radians. Each setting corresponds to radians. The calculation formula is:

[0150]

[0151] Specifically, the main lines of each coil are numbered, ranging from 1 to the number of turns of the main line in the current coil. For a reverse coil, the main line number is defined from the outermost turn to the innermost turn; for a normal coil, the main line number is defined from the innermost turn to the outermost turn.

[0152] Taking the twisted coil with winding code "2V2-(2×2+0)×2" as an example, the main wire numbers of its positive and negative coils are shown below. Figure 9 , Figure 10 , Figure 9 This refers to the arrangement order of the turns and the wire numbering in a tangled inverted disc. Figure 10 The arrangement order and wire numbering of each coil in the twisted coil are shown in Table 3. The radius of the starting winding point of each coil can be calculated based on the coil arrangement order, material size, and coil inner diameter. Assuming the coil inner diameter is 300mm, the coil level parameters are shown in Table 3.

[0153] Therefore, the radius of the starting firing point of the wire coil numbered 3 in the reverse cake is:

[0154]

[0155] in, This indicates the width of the main line 1. This indicates the width of oil passage 1. This indicates the inner diameter of the coil.

[0156] Table 3

[0157]

[0158] Specifically, taking the twisted coil with winding code "2V2-(2×2+0)×2" as an example, the number of interpolations in the coil is 2, the conductor transposition method is 2, the number of turns of the coil group and the twisted group is 2, and the number of parallel turns of the conductors of the coil group and the reverse coil group in the coil is 2. The connection scheme of the main coil turns in the coil is confirmed according to the conductor number, as shown in Table 4.

[0159] Table 4

[0160]

[0161] Step 806: Determine the start and end coordinates of each coil in the coil and correct the end coordinates of the last coil of each set of conductors in the coil.

[0162] Specifically, after confirming the coil curve connection scheme, the start and end coordinates of the coil are calculated according to the rules, and the end coordinate of the coil is related to the offset. The radial offset of the start and end coordinates of each main coil should be calculated based on the connection scheme and the width of each material within the coil. For example, for Figure 9 The start and end coordinate offsets of the main line number 6 The calculation formula is:

[0163]

[0164] Specifically, since the last turn of each set of conductors in the wire pan may not be a full turn, the coordinates of the end point of the last turn of each set of main wires are adjusted according to the number of turns removed. After determining the connection scheme and start / end coordinates of the coils within the pie chart, the coil curve trajectory can be confirmed based on these coordinates. The connection scheme for the coil curve trajectory is then confirmed based on the connection scheme within the pie chart, and the coil curve trajectories are connected. The cross-section corresponding to the connected coil curve trajectory is swept along the trajectory. If the coils are wound with flat conductors, the length and width of the cross-section correspond to the radial width and axial height of the coil parameters, respectively, thus obtaining the coil curve model. Based on the coil curve model, a positive pie chart model and a negative pie chart model are constructed.

[0165] Step 808: Connect the two line-based pie models, the inverted pie model and the upright pie model, into a double-line pie model.

[0166] Specifically, when the first curve of a double-line disc is a reverse curve and the second curve is a forward curve, firstly, if the number of retractions for the reverse curve is not zero, the retractions for the reverse and forward curves should be combined, and the actual retraction should be performed at the outermost turn of the forward curve. Then, the radian coordinates of the start and end points of all main curve turns in the forward curve should be calculated. All have been revised again.

[0167] Secondly, since the starting and ending ordinates of both the inverted and positive pie charts are 0, meaning the two pie charts are at the same vertical height, the ordinates of the starting and ending points of all main line turns in the pie charts are corrected based on the pie chart spacing. With the starting and ending ordinates of the positive pie chart fixed at 0, the starting and ending ordinates of the inverted pie chart are:

[0168]

[0169] in, and These are the ordinates of the starting and ending points of all turns in the inverted pie chart model before and after the correction. The spacing between the lines is denoted as 'pie'.

[0170] Secondly, based on the conductor transposition method, connect the last group of the reversed coil and the coordinates of the termination point around the main line, and the coordinates of the starting point of the first group of the positive coil and the coordinates of the starting point around the main line, using the arc-shaped coil model. Taking the tangled coil with the winding code "2V2-(2×2+0)×2" as an example, the first number 2 indicates the number of interlacings in the coil, and the first number 2 indicates the conductor transposition method, such as... Figure 7 As shown.

[0171] Finally, based on the motion trajectory of the double-circuit coil and the arc, the cross-section corresponding to the main coil is swept along the trajectory to construct a three-dimensional coil entity using a two-dimensional curve trajectory. If the coil is wound with flat wire, the length and width of the cross-section correspond to the radial width and axial height of the coil parameters, respectively, thus obtaining the three-dimensional model of the double-circuit coil.

[0172] Step 810: Model single-coil and multi-coil models based on the double-line pie model.

[0173] Specifically, based on the modeling method of the double-line pie model described above, double-line pie models 1-2, 3-4, 5-6, etc., are constructed sequentially from top to bottom until the modeling of all pieces within a single coil is completed. During the single-coil modeling process, the number of steps back, the ordinate, all double-line pieces are connected, and the curve trajectory is swept into a solid shape, thus forming the single-coil model. In addition, if the center point coordinates of the bottommost pie of the coil are set to (0, 0, 0), then the center point coordinates of the topmost pie of the coil are (0, 0, coil height - piece height).

[0174] Specifically, based on the single-coil modeling, multi-coil modeling is carried out according to the number of single-phase coils, number of phases, spacing between iron core main columns, and coil height, so as to obtain the complete winding model of the entangled transformer. The windings of the same phase share the same center, and the center distance between the windings of non-same-phase coils is equal to the spacing between iron core main columns.

[0175] Taking a three-phase, two-winding power transformer as an example, in a rectangular coordinate system, with the middle phase, center point, and upper surface of the lower yoke set as the origin of the coordinate axes, the coordinates of the center points of the lowest coils of each coil of the transformer are shown in Table 5. The center distance of the iron core main column is... This refers to the distance from the bottom of the X-phase high / low voltage side coil to the upper surface of the lower yoke. For the height of the line cake, For the high / low voltage side coil of phase X.

[0176] Table 5

[0177]

[0178] Based on the confirmed multi-coil coordinate translation of the single-coil model, the final multi-coil model is obtained. The multi-coil model is a complete set of entangled winding model of a transformer.

[0179] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0180] Based on the same inventive concept, this application also provides a parameterization device for a twisted transformer winding used to implement the parameterization method for the twisted transformer winding described above. The solution provided by this device is similar to the solution described in the above method. Therefore, the specific limitations of one or more parameterization device embodiments for twisted transformer windings provided below can be found in the limitations of the parameterization method for twisted transformer windings described above, and will not be repeated here.

[0181] In one exemplary embodiment, such as Figure 11 As shown, a parametric modeling device for entangled transformer windings is provided, comprising: an acquisition module 1102, a connection module 1104, a correction module 1106, and a sweep module 1108, wherein:

[0182] The acquisition module is used to acquire the initialization parameters of the disc winding, including the main wire number.

[0183] The connection module is used to multiply the number of main wires in parallel by the number of tangled groups to obtain the number of main wire sets in the wire cake; for the Nth set of main wires, the main wire numbered N and the main wires whose numbers are separated by the number of the preceding main wires are connected in sequence.

[0184] The correction module is used to determine the motion trajectory of the coil in the pie based on the coordinate-defined rules, and to correct the motion trajectory.

[0185] The sweep module is used to sweep along the movement trajectory of the wire turn based on the cross-section of the wire turn to obtain a three-dimensional wire turn entity;

[0186] The correction module is also used to correct the starting arc and / or ending arc of the coil wound by the coil based on the number of retractions generated when correcting the motion trajectory; and to correct the ordinate of the coil wound by the coil.

[0187] The sweeping module is also used to make lead-out connections between the positive and negative pie discs respectively. Based on the cross-section of the conductor used for the lead-out connection, it sweeps along the movement trajectory of the lead-out connection line and integrates the sweeping results with the three-dimensional line turn entity to obtain the three-dimensional entity of the double line pie disc.

[0188] In one embodiment, the acquisition module is further used to initialize parameters including unit radians; to acquire the initialization parameters of the disc winding, including: dividing the corresponding circumference of the disc winding turns into multiple radians, taking each radian as a unit radian, and each unit radian corresponding to a unit position; numbering the main lines of the reverse disc from the outside to the inside of the disc to obtain the main line number of the reverse disc; numbering the main lines of the positive disc from the inside to the outside of the disc to obtain the main line number of the positive disc; starting from the inner diameter of the disc, superimposing the material width in the disc arrangement sequence to obtain the radial starting point radius of the turns in the disc.

[0189] In one embodiment, the acquisition module is further configured to acquire coordinate custom rules including setting the starting winding position of the first coil in the reverse pancake to the first setting, setting the interval between the starting winding positions of adjacent parallel main lines to the first setting, connecting adjacent coils of the same set of main lines end to end, setting each coil to full winding, and setting the same coil to no displacement in the axial direction; and determining the motion trajectory of the coil in the pancake based on the coordinate custom rules, including: superimposing the radial width of each layer of material that the main line passes through in the radial direction to obtain the radial offset of the main line; and determining the motion trajectory of the coil in the pancake based on the radial offset of the main line, the radius of the starting winding point of the coil in the radial direction and the unit radian.

[0190] In one embodiment, the correction module is also used to correct the motion trajectory, including: adding 1 to the total number of gears that need to be returned, obtaining a first product between the summation result and the unit radian, and returning the termination radian of the last coil wound by the main line to the radian corresponding to the first product, so as to correct the motion trajectory of the coil.

[0191] In one embodiment, the correction module is further configured to correct the starting arc and / or ending arc of the coil wound by the coil based on the number of retractions generated when correcting the motion trajectory, including: when there is retraction in the reverse coil and the forward coil, obtaining the sum of the retraction numbers corresponding to the arc retraction of the last coil wound by the forward and reverse coils respectively, multiplying the sum by a unit arc to obtain a second product; and correcting the starting arc and / or ending arc of each coil wound by the forward coil according to the second product.

[0192] In one embodiment, the connecting module is also used to connect the main lines of the positive and negative cakes respectively, including: according to the main line swapping and interlacing method between the positive and negative cakes, connecting the end point of the main line in the negative cake to the beginning point of the main line in the positive cake through an arc.

[0193] In one embodiment, the correction module is further configured to, for two adjacent sets of double-ply three-dimensional entities, calculate the sum of the number of reductions corresponding to the arcs retreated from the final turn of the positive and negative plywood in the previous set of double-ply three-dimensional entities, as the total reduction number of the previous set; calculate the sum of the number of reductions corresponding to the arcs retreated from the final turn of the positive and negative plywood in the next set of double-ply three-dimensional entities, as the total reduction number of the next set; calculate the sum of the total reduction number of the previous set and the total reduction number of the next set to obtain a sum value; multiply the sum value by a unit radian to obtain a third product; based on the third product, correct the starting arc and / or ending arc of each turn of the negative plywood in the next set of double-ply three-dimensional entities; and based on the previous set of double-ply three-dimensional entities... The ordinate of the wound coil and the axial spacing between two adjacent sets of double-coil three-dimensional entities are used to correct the ordinate of the wound coil in the next set of double-coil three-dimensional entities. Based on the main line transposition and interlacing method between the positive and negative coils in the previous set of double-coil three-dimensional entities, the starting point of the main line in the negative coil of the next set of double-coil three-dimensional entities is connected to the ending point of the main line in the positive coil of the previous set of double-coil three-dimensional entities by an arc. For the arc connecting two adjacent sets of double-coil three-dimensional entities, the cross-section of the conductor is determined according to the radial width and axial height of the conductor used in the arc. Based on the cross-section, the arc is swept along its movement trajectory. The sweeping result is compared with multiple double-coil three-dimensional entities to obtain a single-coil three-dimensional entity.

[0194] In one embodiment, the acquisition module is further configured to determine the origin of the three-dimensional rectangular coordinate system, and based on the origin, change the position of the point on the turn in the single coil three-dimensional entity to be represented using three-dimensional rectangular coordinates; based on the transformer design parameters, spatially locate at least two single coil three-dimensional entities; wherein the conditions for spatial positioning satisfy that the coils on different voltage sides of the same phase share the same center, and the center distance between the coils that are not in the same phase is equal to the spacing between the main columns of the transformer core; and merge the single coil three-dimensional entities after spatial positioning to obtain a multi-coil three-dimensional entity.

[0195] Each module in the parametric modeling device for the aforementioned entangled transformer windings can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the computer device's memory as software, so that the processor can call and execute the corresponding operations of each module.

[0196] In one exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 12As shown, the computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computational and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage medium. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When executed by the processor, the computer program implements a parameterization method for a twisted transformer winding.

[0197] Those skilled in the art will understand that Figure 12 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0198] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0199] Obtain the initialization parameters of the disc winding, including the main wire number;

[0200] Multiply the number of main lines by the number of tangled groups to get the number of main line sets in the line cake; for the Nth set of main lines, connect the main line numbered N and the main lines whose numbers are separated by the number of the preceding main lines in turn to obtain the number of main line sets in sequence.

[0201] Based on the custom coordinate rules, the motion trajectory of the coil in the coil is determined and the motion trajectory is corrected.

[0202] Based on the cross-section of the conductor corresponding to the coil, a sweep is performed along the movement trajectory of the coil to obtain a three-dimensional coil entity;

[0203] Based on the number of retractions generated during the correction of the motion trajectory, the starting arc and / or ending arc of the coil wound by the coil are corrected; the ordinate of the coil wound by the coil is corrected.

[0204] The main line is connected between the positive and negative pie discs respectively. Based on the cross-section of the conductor used for the connection, the motion trajectory of the connection line is swept. The sweeping result is integrated with the three-dimensional line coil entity to obtain the three-dimensional entity of the double-line pie disc.

[0205] In one embodiment, when the processor executes the computer program, it further implements the following steps: the initialization parameters also include unit radians; obtaining the initialization parameters of the disc winding includes: dividing the corresponding circumference of the coil of the disc winding into multiple radians, taking each radian as a unit radian, and each unit radian corresponding to a unit position; numbering the main lines of the reverse disc from the outside to the inside of the disc to obtain the main line number of the reverse disc; numbering the main lines of the positive disc from the inside to the outside of the disc to obtain the main line number of the positive disc; starting from the inner diameter of the disc, superimposing the material width in the disc arrangement sequence to obtain the radial starting point radius of the coil in the disc.

[0206] In one embodiment, when the processor executes the computer program, it further implements the following steps: The coordinate customization rules include setting the starting winding position of the first coil in the reverse pancake to position 1, setting the interval between the starting winding positions of adjacent parallel main lines to position 1, connecting adjacent coils of the same main line end-to-end, setting each coil to full-turn winding, and setting the same coil to have no displacement in the axial direction; based on the coordinate customization rules, determining the motion trajectory of the coils in the pancake includes:

[0207] The radial offset of the main line is obtained by superimposing the radial widths of each layer of material that the main line passes through in the radial direction; the movement trajectory of the coil in the coil is determined by the radial offset of the main line, the radius of the starting winding point of the coil in the coil disc, and the unit radian.

[0208] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0209] The motion trajectory is corrected by: adding 1 to the total number of turns to be reversed, obtaining the first product between the summation result and the unit radian, and reversing the termination radian of the last turn of the main line to the corresponding radian of the first product, so as to correct the motion trajectory of the turn.

[0210] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0211] Based on the number of retractions generated during the correction of the motion trajectory, the starting arc and / or ending arc of the coil wound by the coil disc are corrected, including: when there is retraction in both the reverse and forward coils, obtaining the sum of the retraction numbers corresponding to the arc retraction of the last coil wound by the forward and reverse coils, multiplying the sum by a unit arc to obtain a second product; and correcting the starting arc and / or ending arc of each coil wound by the forward coil according to the second product.

[0212] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0213] Connect the main lines between the positive and negative cakes, including: according to the main line swapping and interlacing methods between the positive and negative cakes, connect the end point of the main line in the negative cake to the beginning point of the main line in the positive cake using an arc.

[0214] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0215] For two adjacent sets of double-circle disc 3D entities, calculate the sum of the number of arcs that the last turn of each of the positive and negative discs in the previous set of double-circle disc 3D entities should retract, which is the total number of arcs retracted in the previous set. Calculate the sum of the number of arcs that the last turn of each of the positive and negative discs in the next set of double-circle disc 3D entities should retract, which is the total number of arcs retracted in the next set. Calculate the sum of the total number of arcs retracted in the previous set and the total number of arcs retracted in the next set of double-circle disc 3D entities to obtain the sum value. Multiply the sum value by a unit radian to obtain the third product. Based on the third product, correct the starting arc and / or ending arc of each turn of the negative disc in the next set of double-circle disc 3D entities. Then, based on the longitudinal coordinates of the turns wound in the previous set of double-circle disc 3D entities... The axial spacing between adjacent sets of double-circle three-dimensional entities is used to correct the ordinate of the coils wound in the next set of double-circle three-dimensional entities. Based on the main line transposition and interlacing method between the positive and negative coils in the previous set of double-circle three-dimensional entities, the starting point of the main line in the negative coil of the next set of double-circle three-dimensional entities is connected to the ending point of the main line in the positive coil of the previous set of double-circle three-dimensional entities by an arc. For the arc connecting adjacent sets of double-circle three-dimensional entities, the cross-section of the conductor is determined according to the radial width and axial height of the conductor used in the arc. Based on the cross-section, the arc is swept along its trajectory. The sweeping result is compared with multiple double-circle three-dimensional entities to obtain a single-coil three-dimensional entity.

[0216] In one embodiment, when the processor executes the computer program, it further performs the following steps: determining the origin of the three-dimensional rectangular coordinate system; based on the origin, changing the position of the point on the turn in the single-coil three-dimensional entity to be represented using three-dimensional rectangular coordinates; based on the transformer design parameters, spatially locating at least two single-coil three-dimensional entities; wherein the conditions for spatial positioning satisfy that the coils on different voltage sides of the same phase share the same center, and the center distance between the coils that are not in the same phase is equal to the spacing between the main columns of the transformer core; merging the single-coil three-dimensional entities after spatial positioning to obtain a multi-coil three-dimensional entity.

[0217] The implementation principle and technical effects of the above embodiments are similar to those of the above method embodiments, and will not be repeated here.

[0218] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0219] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0220] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0221] 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 application.

[0222] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A parametric modeling method for entangled transformer windings, characterized in that, The method includes: Obtain the initialization parameters of the disc winding, including the main wire number; Multiply the number of main lines by the number of tangled groups to get the number of main line sets in the line cake; for the Nth set of main lines, connect the main line numbered N and the main lines whose numbers are separated by the number of the preceding main lines in turn to obtain the number of main line sets in sequence. Based on the coordinate-defined rules, the motion trajectory of the coil in the coil is determined, and the motion trajectory is corrected. Based on the cross-section of the conductor corresponding to the coil, a sweep is performed along the movement trajectory of the coil to obtain a three-dimensional coil entity; Based on the number of retractions generated when correcting the motion trajectory, the starting arc and / or ending arc of the coil wound by the coil are corrected; the ordinate of the coil wound by the coil is corrected. The main line is connected between the positive and negative pie discs respectively. Based on the cross-section of the conductor used for the connection, the motion trajectory of the connection line is swept. The sweeping result is integrated with the three-dimensional line coil entity to obtain the three-dimensional entity of the double-line pie disc.

2. The method according to claim 1, characterized in that, The initialization parameters also include unit radians; obtaining the initialization parameters of the disc winding includes: The circumference of the corresponding turn of the disc winding is divided into multiple arcs, each arc is taken as a unit arc, and each unit arc corresponds to a unit gear. The main lines of the reversed disc are numbered from the outside to the inside to obtain the main line number of the reversed disc; the main lines of the forward disc are numbered from the inside to the outside to obtain the main line number of the forward disc. Starting from the inner diameter of the coil, the radial width of the material in the coil arrangement sequence is superimposed to obtain the starting winding point radius of the coil in the radial direction.

3. The method according to claim 1, characterized in that, The coordinate customization rules include setting the starting winding position of the first coil in the reverse disc to the first level, setting the interval between the starting winding positions of adjacent parallel main lines to level 1, connecting adjacent coils of the same main line end to end, setting each coil to full-turn winding, and setting the same coil to no displacement in the axial direction. The determination of the motion trajectory of the coil in the coil pie based on the coordinate-defined rules includes: The radial offset of the main line is obtained by superimposing the radial widths of each layer of material that the main line passes through in the radial direction; The motion trajectory of the coil in the coil is determined based on the radial offset of the main line, the radius of the starting winding point of the coil in the coil disc in the radial direction, and the unit radian.

4. The method according to claim 1, characterized in that, The correction of the motion trajectory includes: Add 1 to the total number of turns to be returned, obtain the first product between the summation result and the unit radian, and return the termination radian of the last turn of the main line to the corresponding radian of the first product in order to correct the movement trajectory of the turn.

5. The method according to claim 1, characterized in that, The correction of the starting and / or ending arc of the coil wound on the coil based on the number of retractions generated when correcting the motion trajectory includes: When there is a rollback in both the reverse and forward coils, obtain the sum of the rollback numbers corresponding to the rollback of the last turn wound in each coil. Multiply the sum by a unit radian to obtain a second product. Based on the second product, correct the starting and / or ending radians of each turn wound in the forward coil.

6. The method according to claim 1, characterized in that, The process of connecting the positive and negative pie charts with the main line includes: Based on the way the main lines are interchanged and arranged between the positive and negative cakes, the ending point of the main line in the negative cake is connected to the starting point of the main line in the positive cake by an arc.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: For two adjacent sets of double-line disc 3D entities, calculate the sum of the number of arcs that the last turn of the positive and negative discs in the previous set of double-line disc 3D entities should retract, which is the total number of arcs for the previous set; calculate the sum of the number of arcs that the last turn of the positive and negative discs in the next set of double-line disc 3D entities should retract, which is the total number of arcs for the next set. Calculate the sum of the total number of downshifts in the previous group and the total number of downshifts in the next group to obtain the sum; multiply the sum by the unit radians to obtain the third product; Based on the third product, the starting radii and / or ending radii of each turn of the reversed disc in the next set of double-line disc three-dimensional solids are corrected. Based on the ordinate of the coils wound in the previous set of double-coil three-dimensional entities and the axial spacing between two adjacent sets of double-coil three-dimensional entities, the ordinate of the coils wound in the next set of double-coil three-dimensional entities is corrected. Based on the main line interchange and arrangement method between the positive cake in the previous set of double-line cake 3D entities and the negative cake in the next set of double-line cake 3D entities, the starting point of the main line in the negative cake in the next set of double-line cake 3D entities is connected to the ending point of the main line in the positive cake in the previous set of double-line cake 3D entities by using an arc. For the arc connecting two adjacent sets of double-line disc three-dimensional entities, the cross-section of the conductor is determined according to the radial width and axial height of the conductor used for the arc. Based on the cross-section, a sweep is performed along the movement trajectory of the arc. The sweep result is compared with multiple double-line disc three-dimensional entities to obtain a single-coil three-dimensional entity.

8. The method according to claim 7, characterized in that, The method further includes: Determine the origin of the three-dimensional rectangular coordinate system, and based on the origin, change the position of the point on the turn in the three-dimensional entity of the single coil to be represented using three-dimensional rectangular coordinates; Based on transformer design parameters, at least two single-coil three-dimensional entities are spatially located; wherein, the conditions for spatial location are that coils on different voltage sides of the same phase share the same center, and the center distance between coils that are not in the same phase is equal to the spacing between the main columns of the transformer core. After spatial positioning is completed, the single-coil 3D entity is merged to obtain a multi-coil 3D entity.

9. A parametric modeling device for entangled transformer windings, characterized in that, The device includes: The acquisition module is used to acquire the initialization parameters of the disc winding, including the main line number. The connection module is used to multiply the number of main wires in parallel by the number of tangled groups to obtain the number of main wire sets in the wire cake; for the Nth set of main wires, the main wire numbered N and the main wires whose numbers are separated by the number of the preceding main wires are connected in sequence. The correction module is used to determine the motion trajectory of the coil in the coil pie based on the coordinate-defined rules, and to correct the motion trajectory. The sweep module is used to sweep along the movement trajectory of the wire turn based on the cross-section of the wire turn to obtain a three-dimensional wire turn entity; The correction module is also used to correct the starting arc and / or ending arc of the coil wound by the coil based on the number of retractions generated when correcting the motion trajectory; and to correct the ordinate of the coil wound by the coil. The sweeping module is also used to make lead-out connections between the positive and negative pie, respectively. Based on the cross-section of the conductor used for the lead-out connection, it sweeps along the movement trajectory of the lead-out connection line and integrates the sweeping result with the three-dimensional line coil entity to obtain a three-dimensional entity of the double-line pie.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 8.

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