JP5090859B2 - Analysis model generation method, analysis model generation apparatus, computer program, and recording medium - Google Patents

Description

  The present invention relates to an analysis model generation method and an analysis model generation method for generating an analysis model used for numerical analysis of an electromagnetic component formed by winding a winding around a core based on a core shape model representing a three-dimensional core shape. The present invention relates to an analysis model generation apparatus to be implemented, a computer program that causes a computer to function as the analysis model generation apparatus, and a recording medium that records the computer program in a computer-readable manner.

  In recent years, miniaturization of power adapters used for electric devices such as notebook computers and game machines has been demanded. The main factor for the increase in the size of the power adapter is the transformer, and a reduction in the size of the transformer is required. The transformer for the switching power supply can be reduced in size by increasing the switching frequency. However, the higher the switching frequency, the larger the eddy current loss due to leakage flux, skin effect, and proximity effect. In order to design a transformer that can reduce eddy current loss and can be miniaturized, it is necessary to repeat the improvement after grasping the operation of the transformer in detail.

  The transformer is designed using, for example, CAD (Computer Aided Design). In particular, according to the three-dimensional CAD, the assembly procedure of the transformer, the three-dimensional shape of the core and windings constituting the transformer, Comprehensive design including dimensions and positional relationships is possible. The designed transformer is evaluated for performance by a performance test using a real machine or a numerical analysis using a computer, and the design is repeated to correct the found defects. CAE (Computer Aided Engineering), which uses a computer to numerically analyze the performance of a transformer, is easier to change the design than the performance test using the actual transformer, and can reduce the development cost of the transformer. it can.

As the CAE, for example, a finite element method is used. In the finite element method, an analysis model is generated by generating a mesh that expresses a shape model of a transformer created using CAD by a combination of a plurality of polygons or polyhedron elements, and numerical values are generated for the generated analysis model. This is a method of analysis.
However, the method of generating a three-dimensional mesh and performing numerical analysis requires an enormous amount of calculation time, for example, several hours to several days, and it also takes time to generate an analysis model, so an analysis model is generated in two dimensions. However, a technique for performing numerical analysis is also used. For example, extract the core cross section obtained by cutting the three-dimensional core shape that constitutes the transformer at a specific cutting plane, model the winding specifications on the two-dimensional plane including the core cross section, and perform numerical analysis There is a way.
JP 2000-28665 A

  However, in order to grasp in detail the operation of the transformer, for example, the proximity effect between the strands constituting the winding, the current density distribution of the strands, etc., a detailed analysis model that reflects the specifications of the winding details Therefore, even when using a 2D wire shape model as well as a 3D wire shape model, it takes time to generate an analysis model and design the transformer efficiently. There was a problem that it could not be improved.

For example, in a two-dimensional wire shape model, the cross section of the wire appears at each turn, so the winding specifications can be modeled in two dimensions by specifying the position of each cross section of the wire one by one. In the case where the strand is composed of a stranded wire formed by twisting 10 conductors and the number of turns of the winding is several tens of times, each cross section of the strand on the two-dimensional plane is possible. It is necessary to specify 100 positions or more, and it takes time to generate an analysis model. This is the same when the design is changed, and it is necessary to respecify the position of each cross section of the wire, which is troublesome.
The above-described problems generally occur not only when generating an analysis model of a transformer, but also when generating an analysis model of an electromagnetic component formed by winding a winding around a core.

  The present invention has been made in view of such circumstances, and accepts the position and size of the winding space in which the winding is to be disposed and the winding mode of the wire in the winding space, and the received winding space. And by generating an analysis model of the electromagnetic component based on the winding mode, the winding specification is received with fewer steps than the conventional analysis model generation method, and the electromagnetic component including the core and the strand An analysis model generation method and an analysis model generation apparatus that can easily generate a detailed analysis model, particularly an analysis model that reflects the winding state of the wire in detail, and that can easily change the design of the analysis model An object of the present invention is to provide a computer program for causing a computer to function as the analysis model generation device, and a recording medium on which the computer program is recorded so as to be readable by the computer.

  Another object of the present invention is to accept at least one of the number of turns of the strands in the winding space, the number of layers of the strands wound in layers in the direction of contact with and away from the winding axis, and the type of the strands. By configuring as described above, it is possible to easily generate a detailed analysis model of electromagnetic parts reflecting the number of turns, number of layers, and type of wire in the winding space, compared to the conventional analysis model generation method Another object of the present invention is to provide an analysis model generation method and an analysis model generation apparatus that can easily change the design of an analysis model.

  Another object of the present invention is to accept at least one of a round wire, a square wire, and a twisted wire as the type of the wire, and as a type of the wire in the winding space as compared with the conventional analysis model generation method. An analysis model generation method and an analysis model generation apparatus that can easily generate detailed analysis models of electromagnetic parts reflecting round wires, square wires, and stranded wires, and can easily change the design of analysis models. It is to provide.

  Another object of the present invention is to accept a number of strands connected in parallel, thereby generating a detailed analysis model of the electromagnetic component reflecting the parallel connection mode in the winding space. It is an object of the present invention to provide an analysis model generation method and an analysis model generation apparatus that can easily change a design.

  Another object of the present invention is to receive the position and size of a plurality of winding spaces that are to be juxtaposed in the winding axis direction and / or in the direction of contact with and away from the winding axis, By configuring to accept the change in size, it is possible to easily specify a plurality of winding spaces to be juxtaposed in the direction in the electromagnetic component analysis model and to make the user aware of the strands It is another object of the present invention to provide an analysis model generation method and an analysis model generation apparatus that can freely change the relative position and size of the winding space.

  Another object of the present invention is such that when a change in the position and size of one winding space is received, the position and size of another winding space are changed in accordance with the contents of the received change. By doing so, it is possible to freely change the position and size of another winding space in conjunction with one winding space arranged in parallel in the analysis model of the electromagnetic component without making the user aware of the wire. An analysis model generation method and an analysis model generation apparatus are provided.

  Another object of the present invention is to accept the position and size of a plurality of winding spaces so that the winding spaces are separated from each other, thereby making it possible to make a plurality of windings without making the user aware of predetermined regulations or standards. It is an object of the present invention to provide an analysis model generation method and an analysis model generation apparatus capable of generating a detailed analysis model of electromagnetic parts having lines and easily changing the design of the analysis model.

  Another object of the present invention is to easily generate a detailed analysis model of a transformer in which a winding is wound around a core as compared with a conventional analysis model generation method, and to change the design of the analysis model. An analysis model generation method and an analysis model generation apparatus that can be easily performed are provided.

An analysis model generation method according to the present invention generates an analysis model used for numerical analysis of an electromagnetic component obtained by winding a winding around a core based on a core shape model representing a three-dimensional core shape. In the procedure for generating a two-dimensional core shape model representing a core cross section substantially parallel to the winding axis based on the three-dimensional core shape model, and for the core cross section represented by the two-dimensional core shape model, The position and size of the winding space in which the winding is to be disposed , the number of turns of the wire constituting the winding to be disposed in the winding space, and the winding is laminated in the direction of contact with and away from the winding axis. number of layers of wires, as well as the procedure for receiving a winding manner, including a cross-sectional shape and dimensions of the plain line, and the position and size of the received winding space, on the basis of the winding embodiment, substantially to the core cross-section Wire shape expressing multiple cross-sections of parallel wires A step of generating a Dell, generated two-dimensional wire shape model, and based on the core shape model, generates an analysis model of the electromagnetic component representing the core shape and wire shape with a combination of a plurality of polygons Including a procedure.

The analysis model generation method according to the present invention is characterized in that a cross-sectional shape of the strand includes at least one of a cross- sectional shape of a round wire, a square wire, and a stranded wire.

  In the analysis model generation method according to the present invention, the procedure for receiving the winding mode of the strands includes a procedure for receiving the number of strands connected in parallel.

  In the analysis model generation method according to the present invention, the procedure for receiving the position and size of the winding space is determined by the position of the plurality of winding spaces to be juxtaposed in the direction of the winding axis and / or the direction of contact with and away from the winding axis. And a procedure for receiving the size, and a procedure for receiving a change in the position and size of the plurality of received winding spaces.

  In the analysis model generation method according to the present invention, when a change in the position and size of one winding space is received, a procedure for changing the position and size of another winding space according to the content of the received change. It is characterized by including.

  In the analysis model generation method according to the present invention, the procedure of receiving the position and size of the winding space includes a procedure of receiving the position and size of the plurality of winding spaces so that the winding spaces are separated from each other. Features.

  The analysis model generation method according to the present invention is characterized in that the electromagnetic component is a transformer.

An analysis model generation apparatus according to the present invention generates an analysis model used for numerical analysis of an electromagnetic component obtained by winding a winding around a core based on a core shape model representing a three-dimensional core shape. In the above, on the basis of the three-dimensional core shape model, a means for generating a two-dimensional core shape model representing a core cross section substantially parallel to the winding axis, and a core cross section represented by the two-dimensional core shape model, The winding space receiving means for receiving the position and size of the winding space in which the winding is to be arranged , and the number of turns of the wire constituting the winding to be arranged in the winding space and the winding axis A winding mode receiving means for receiving a winding mode including the number of layers of the wire wound in a direction and a cross-sectional shape and dimensions of the wire, and a position of the winding space received by the winding space receiving unit and the size, before Kimaki times aspect Based on the winding manner urging means accepted, it means for generating a wire shape model representing a substantially parallel plurality of strands cross core cross-section, the generated two-dimensional wire shape model, and the core And a means for generating an analysis model of an electromagnetic component in which the core shape and the wire shape are expressed by a combination of a plurality of polygons based on the shape model.

In the analysis model generation apparatus according to the present invention, the cross-sectional shape of the strand includes at least one of a cross- sectional shape of a round wire, a square wire, and a stranded wire.

  The analysis model generation apparatus according to the present invention is characterized in that the winding mode reception means includes means for receiving the number of strands connected in parallel.

  In the analysis model generation device according to the present invention, the winding space receiving means receives the position and size of a plurality of winding spaces that should be juxtaposed in the winding axis direction and / or in the direction of contact with and away from the winding axis. And means for accepting changes in the position and size of the accepted plurality of winding spaces.

  In the analysis model generation device according to the present invention, when the winding mode reception unit receives a change in the position and size of one winding space, the position of another winding space depends on the content of the received change. And means for changing the size.

  The analysis model generation apparatus according to the present invention is characterized in that the winding space receiving means receives positions and sizes of a plurality of winding spaces so that the winding spaces are separated from each other.

  In the analysis model generation device according to the present invention, the electromagnetic component is a transformer.

A computer program according to the present invention is a computer program that causes a computer to generate an analysis model used for numerical analysis of an electromagnetic component formed by winding a winding around a core based on a core shape model representing a three-dimensional core shape. Then, based on the three-dimensional core shape model, the computer generates a two-dimensional core shape model that represents the core cross section substantially parallel to the winding axis, and the computer expresses the two-dimensional core shape model. The position and size of the winding space in which the winding is to be arranged , the number of turns of the strands constituting the winding to be arranged in the winding space, and the winding axis with respect to the core cross section number of layers of strands wound laminated winding direction, and on the basis of the winding mode comprising a cross-sectional shape and dimensions of the plain line, wire shape model representing a substantially parallel plurality of strands cross core cross-section The Generating a procedure for made, the computer generated two-dimensional wire shape model, and based on the core shape model, the analysis model of an electromagnetic component representing the core shape and wire shape with a combination of a plurality of polygons And a procedure for making it happen.

  The recording medium according to the present invention is characterized in that the computer program is recorded so as to be readable by a computer.

In the present invention, based on the three-dimensional core shape model, a two-dimensional core shape model expressing a core cross section substantially parallel to the winding axis is generated. And the position and magnitude | size of the coil | winding space where a coil | winding should be arrange | positioned are received with respect to a two-dimensional core cross section. Moreover, the winding mode of the strand which comprises the coil | winding which should be distribute | arranged to winding space is received. Next, based on the received position and size of the winding space, and the winding mode, a two-dimensional wire shape model representing a plurality of wire cross sections substantially parallel to the core cross section is generated, and the generated two An electromagnetic component analysis model is generated based on the three-dimensional wire shape model and the core shape model. The core shape model used for generating the analysis model may be either a two-dimensional or three-dimensional core shape model.
Therefore, compared with the case of accepting a plurality of strand cross sections for a two-dimensional core cross-section one by one, the specification of the winding is received with fewer steps, and the electromagnetic component reflecting the winding mode of the strand in detail An analysis model can be generated.

  In the present invention, a wire shape model based on at least one of the number of turns of the wire, the number of layers of the wire wound in the direction of contact with and away from the winding axis, and the type of the wire Is generated. Therefore, compared with the case where each position, cross-sectional shape, etc. of each of the plurality of strand cross sections is received one by one, the number of turns of the specific strand, the number of layers, or the winding type specified by the strand type is reduced with fewer steps. It is possible to receive the wire specification and generate an analysis model of the electromagnetic component reflecting the winding mode of the wire in detail.

  In the present invention, at least one of a round wire, a square wire, and a stranded wire is accepted as a type of the strand, and a strand shape model is generated. Therefore, compared to accepting the cross-sectional shape, dimensions, etc. of each of the plurality of strand cross-sections one by one, the specification of the winding in which the cross-sectional shape of the strand is defined with fewer steps is accepted, and It is possible to generate an analysis model of an electromagnetic component that reflects the winding mode in detail.

  In the present invention, the number of windings connected in parallel is received and a wire shape model is generated. Therefore, it is possible to generate a detailed analysis model of the electromagnetic component reflecting the parallel connection of the strands in the winding space.

In the present invention, the position and size of a plurality of winding spaces to be juxtaposed in the direction of the winding axis and / or the direction close to and away from the winding axis are received, and the position and size of the received winding space are further received. Accept the change. Therefore, a plurality of winding spaces can be easily specified, and the relative position and size of the winding spaces can be freely changed.
Note that the direction of the winding axis and / or the direction of contact with and away from the winding axis means the direction of the winding axis and the direction of contact with or away from the winding axis, or the direction of the winding axis or the direction of contact with or away from the winding axis. .

  In the present invention, when a change in the position and size of one winding space is received, the position and size of another winding space are also changed according to the received change content. For example, when one winding space is moved, the other winding spaces are also moved in conjunction with each other.

In the present invention, since the positions and sizes of the plurality of winding spaces are received so that the winding spaces are separated from each other, the winding spaces do not contact or overlap each other. Therefore, the analysis model of the electromagnetic component can be generated and the design can be changed by concentrating on the arrangement and specifications of the windings without making the user aware of predetermined laws or standards.
Note that it is not always necessary that all the winding spaces are separated from each other, and a plurality of winding spaces may be received so that at least two winding spaces are separated from each other.

  In this invention, the specification of the coil | winding which comprises a transformer is received, and the analysis model of the transformer which reflected the winding aspect of the strand in detail is produced | generated.

  According to the present invention, as compared with the conventional analysis model generation method, the specification of the winding is received with fewer steps, and a detailed analysis model of the electromagnetic component including the core and the strand, in particular, the winding mode of the strand. The analysis model reflected in detail can be easily generated, and the design of the analysis model can be easily changed.

  According to the present invention, it is possible to easily generate a detailed analysis model of an electromagnetic component that reflects the number of turns, the number of layers, and the type of element wire in the winding space, as compared with the conventional analysis model generation method. The analysis model design can be easily changed.

  According to the present invention, compared with the conventional analysis model generation method, a detailed analysis model of an electromagnetic component that reflects a round wire, a square wire, and a stranded wire as a kind of wire in the winding space is easily generated. The design of the analysis model can be easily changed.

  According to the present invention, it is possible to generate a detailed analysis model of an electromagnetic component that reflects the manner of parallel connection in the winding space, and to easily change the design of the analysis model.

  According to the present invention, a plurality of winding spaces to be juxtaposed in the direction of the winding axis and / or the direction of contact with and away from the winding axis in the electromagnetic component analysis model can be easily obtained without making the user aware of the wire. The relative position and size of the winding space can be freely changed.

  According to the present invention, the position and size of another winding space can be freely changed in conjunction with one winding space juxtaposed in an analysis model of an electromagnetic component without making the user aware of the wire. Can do.

  According to the present invention, it is possible to generate a detailed analysis model of an electromagnetic component having a plurality of windings without making a user aware of predetermined laws or standards, and to easily change the design of the analysis model. be able to.

  According to the present invention, it is possible to easily generate an analysis model of a transformer that reflects the winding state of the wire in detail, and to easily change the design of the analysis model, as compared with the conventional analysis model generation method. Can be done.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
FIG. 1 is a block diagram showing a configuration of an analysis model generation apparatus according to an embodiment of the present invention. In the figure, reference numeral 1 denotes an analysis model generation apparatus according to an embodiment of the present invention. The analysis model generation device 1 is a function of a three-dimensional CAD device that generates a three-dimensional core shape model that represents the shape of the core constituting the transformer, and an analysis device that numerically analyzes the performance of the transformer by the finite element method. It also has functions and is configured using a computer. The analysis model generation device 1 includes a CPU 11 that performs a calculation, a RAM 12 that stores temporary information generated along with the calculation, an external storage device 13 such as a CD-ROM drive, and an internal storage device 14 such as a hard disk. I have. The CPU 11 reads the computer program 20 according to the embodiment of the present invention from the recording medium 2 such as a CD-ROM by the external storage device 13 and stores the read computer program 20 in the internal storage device 14. The internal storage device 14 stores, together with the computer program 20, a core database, a bobbin database, a wire database, and other various data necessary for numerical analysis of the transformer. The core database stores a three-dimensional core shape model created by three-dimensional CAD, a three-dimensional core shape model conforming to a predetermined standard, a winding axis A defined for each core shape, and the like. The bobbin database stores a three-dimensional bobbin shape model representing the shape of the bobbin constituting the transformer. The strand database stores information on the shape of the strands that make up the windings of the transformer. The CPU 11 loads the computer program 20 into the RAM 12 and performs processing related to the analysis model generation method according to the embodiment of the present invention based on the loaded computer program 20. Specifically, the CPU 11 executes processing such as generation of an analysis model used for numerical analysis of the transformer and numerical analysis based on the analysis model.
The analysis model generation apparatus 1 includes an input device 15 such as a keyboard or a mouse, and an output device 16 such as a liquid crystal display or a CRT display, and receives operations from the user such as data input. It has become.
Furthermore, the analysis model generation apparatus 1 includes a communication interface 17, downloads the computer program 20 according to the present invention from an external server computer 3 connected to the communication interface 17, and executes processing by the CPU 11. May be.

  2 and 3 are flowcharts showing the processing procedure of the CPU 11 that implements the analysis model generation method according to the present invention. When the CPU 11 of the analysis model generation device 1 receives an instruction to start generation of an analysis model and numerical analysis by the input device 15, the CPU 11 loads the computer program 20 stored in the internal storage device 14 into the RAM 12, and loads the computer. The following processing is executed according to the program 20. CPU11 receives the power supply information which concerns on the electric current or voltage supplied to a transformer from a power supply as a specification of a transformer in the input device 15, and memorize | stores it in RAM12 (step S11). The power supply information includes the maximum value of the current or voltage supplied to the primary winding constituting the transformer, the effective value of the current or voltage, the waveform information indicating whether the current or voltage is a sine wave or a pulse wave, and the frequency. Etc. are included.

  Next, the CPU 11 displays the core shape selection screen 4 for accepting selection of the core shape constituting the transformer on the output device 16, and accepts the core shape on the input device 15 (step S12).

FIG. 4 is a schematic diagram illustrating a configuration example of the core shape selection screen 4. The core shape selection screen 4 includes two frames divided into two in the horizontal direction, an OK button 44, and a cancel button. In one frame, a core showing a tree structure of a core database stored in the internal storage device 14 A database display screen 41 is arranged, and a core detailed information display screen 42 showing detailed information regarding the temporarily selected core shape is arranged in the other frame.
The tree structure displayed on the core database display screen 41 includes, for example, a “user” folder, an “import” folder, a “template” folder, a “core provider” folder, and the like. The “user” folder stores a three-dimensional core shape model prepared by the user, and the user can reuse the core shape model created in the past. The “import” folder stores the imported three-dimensional core shape model created by the three-dimensional CAD device. The “core provider” folder stores core shape models of cores handled by a specific core provider. The “template” folder stores a three-dimensional core shape model prepared in advance according to a predetermined standard. For example, EE, EER, PQ, EPC, EI, RE, UU, UI type core shape models are stored. The user can adjust the dimensions using the core shape model stored in the “template” folder and immediately start designing the transformer.
The core detailed information display screen 42 is, for example, a perspective view showing the core shape three-dimensionally, a front view showing the core shape two-dimensionally, a side view, etc., and a core numerically expressing dimensions that define the core shape. A dimension table 43.

  The user can temporarily select one core shape model stored in the core database by operating the input device 15. The file name of the temporarily selected core shape model, for example, “EE4” is displayed with the contrast reversed, and the temporarily selected core shape model, for example, the three-dimensional shape, two-dimensional shape, and core size of the EE type core shape model. A table 43 is displayed. Further, the user can change the numerical value displayed in the core dimension table 43 or input a numerical value to edit the core shape dimension and select the OK button 44 to select the core shape model. it can.

  When a three-dimensional core shape is selected in step S12, the CPU 11 reads a core shape model representing the selected core shape from the internal storage device 14 to the RAM 12 (step S13).

  Hereinafter, a case where an EE type core shape is selected as an example of the core shape will be described. FIG. 5 is a perspective view of an EE type core. The EE-type core 5 includes two core halves 51 and 51 having an E-shaped cross section, and the core halves 51 and 51 are arranged so as to face each other to constitute the core 5 of the transformer. An arrow indicated by a broken line in the figure indicates a winding axis A around which a winding 7 (not shown) is to be wound.

  FIG. 6 is a schematic diagram showing an example of a transformer using the EE type core 5. 6A is a schematic exploded front view of the transformer, FIG. 6B is a schematic front view of the transformer, and FIG. 6C is a cross-sectional view taken along the line VI-VI in FIG. 6B. . The transformer is configured by winding a winding 7 around a core 5. More specifically, the wire 7 a constituting the winding 7 is wound around the bobbin 6 that can be inserted into the core 5, and the bobbin 6 around which the wire 7 a is wound is inserted into the core 5, thereby transforming the transformer. It is configured.

  When the process of step S13 is completed, the CPU 11 determines the winding axis A (step S14). When the core shape selected in step S12 conforms to the standard, the CPU 11 reads the winding axis A stored in advance in the internal storage device 14 into the RAM 12, thereby determining the winding axis A. If the core shape selected in step S12 is out of specification, the CPU 11 displays a winding axis selection screen (not shown) for accepting selection of the winding axis A on the output device 16, and the winding axis A is input to the input device. By receiving at 15, the winding axis A is determined. Normally, the CPU 11 presents three winding axis A candidates orthogonal to each other on the output device 16 and receives the winding axis A on the input device 15.

  Next, the CPU 11 presents the bobbin selection screen 8 for accepting the selection of the bobbin and the bobbin that can be inserted into the core selected in step S12 on the output device 16, and the bobbin desired by the user is displayed on the input device 15. (Step S15).

FIG. 7 is a schematic diagram illustrating a configuration example of the bobbin selection screen 8. The bobbin selection screen 8 includes a bobbin receiving unit 81 for receiving the type of bobbin, a bobbin size receiving unit 82 for receiving bobbin dimensions, a bobbin side cross-section display screen 83 for displaying a side cross-section of the bobbin, and a winding axis A cross-section of the bobbin. Has a bobbin shaft section display screen 84 and an OK button 85.
The bobbin accepting unit 81 is arranged at the top of the bobbin selection screen 8, for example, and has a pull-down menu for displaying and accepting names of a plurality of bobbins. In the pull-down menu, a bobbin having a shape and size that can be inserted into the core having the core shape selected in step S12 is displayed. Specifically, the CPU 11 calculates the cross-sectional dimension of the core around which the winding is wound based on the core shape model read to the RAM 12 in step S13 and the winding axis A received in step S14, and stores it in the internal memory. The internal diameter of each of the plurality of bobbins stored in the device 14 is read out to the RAM 12, the cross-sectional dimensions of the core and the internal diameter of the bobbin are compared, and the bobbin that can be inserted into the core is identified based on the comparison result. The bobbin name is displayed as a menu on the output device 16.

  The bobbin size receiving unit 82 is a text input field disposed below the bobbin receiving unit 81, for example.

  The user can select a desired bobbin from the pull-down menu of the bobbin receiving unit 81 by operating the input device 15, and by inputting a numerical value in the text input field of the bobbin size receiving unit 82, You can edit the dimensions. Further, the shape of the selected bobbin can be visually confirmed. When the selection of the bobbin and the size adjustment are completed, the user can determine the desired type and size of the bobbin by operating the OK button 85.

  FIG. 8 is a schematic view of a plurality of types of bobbins viewed from the winding axis A direction. 8A is a track type bobbin having a substantially rectangular axial section with a short side curved, FIG. 8B is a cylindrical type bobbin having a circular axial section, and FIG. FIG. 8 (d) shows a square bobbin with a fillet having a substantially rectangular axial section having a rounded corner.

  When finishing the process in step S15, the CPU 11 determines a cut surface for generating a two-dimensional core shape model based on the three-dimensional core shape model stored in the RAM 12 (step S16). A two-dimensional core shape model is generated based on the cut surface and the core shape model stored in the RAM 12 (step S17). Note that the generated two-dimensional core shape model is stored in the RAM 12 or the internal storage device 14.

FIG. 9 is an explanatory diagram for conceptually explaining a method of determining a cut surface. 9A is a cross-sectional view obtained by cutting the transformer along a plane substantially perpendicular to the winding axis A, and FIG. 9B is a cross-sectional view taken along the line IX-IX in FIG. 9A. However, the winding is not shown for convenience of drawing. First, as shown in FIG. 9A, the CPU 11 is substantially parallel to the winding axis A determined in step S14 and is on the surface of the bobbin selected in step S15, that is, the surface on which the strand is wound. A substantially vertical vertical plane B is selected, the area of the core window W is calculated based on the three-dimensional core shape model and the bobbin shape read out to the RAM 12, and the calculated area is stored. As shown in FIG. 9B, the core window W means a space portion in which windings can be arranged in a two-dimensional plane obtained by cutting a core with a bobbin inserted by a vertical plane B. To do. The area of the core window W is obtained, for example, by multiplying the distance in the direction of the winding axis A of the winding bobbin by the distance between the bobbin and the core in the direction away from the winding axis A.
Next, the CPU 11 selects the vertical plane B over the entire surface of the bobbin and determines whether or not the area of the core window W has been calculated. When it determines with no, CPU11 moves the vertical surface B to the winding direction of a coil | winding, and repeats the process which calculates the area of the core window W similarly. When it is determined that the selection of the vertical plane B and the area of the core window W are calculated over the entire surface of the bobbin, the CPU 11 specifies the vertical plane B that minimizes the area of the core window W, and specifies the specified vertical plane B is determined as the cutting plane.

  FIG. 10 is a schematic diagram illustrating an example of a two-dimensional core shape model. Since the cross-sectional shape obtained by cutting the three-dimensional core shape model at the cutting plane is symmetric with respect to the winding axis A, the CPU 11 generates one symmetric cross-sectional shape as a two-dimensional core shape model.

  When the process of step S17 is completed, the CPU 11 displays the winding specification reception screen 9 for displaying the two-dimensional core shape model and receiving the winding specification on the output device 16 (step S18).

FIG. 11 is a schematic diagram illustrating a configuration example of the winding specification reception screen 9. The winding specification reception screen 9 confirms the winding specifications, a winding specification display screen 91 arranged at the upper right, a space selection receiving unit 92 arranged at the upper left, a table display screen 93 arranged below. And an OK button 94.
On the winding specification display screen 91, a part of the core cross section is displayed together with the bobbin space. In addition, the winding specification display screen 91 includes a primary winding space in which the primary winding is to be disposed, a secondary winding space in which the secondary winding is to be disposed, and an insulating layer, as will be described later. The insulation space to be displayed is displayed as a rectangular frame image, and the position and size of each space can be edited on the winding specification display screen 91.

  The space selection receiving unit 92 includes a primary winding button 92a for receiving the position and size of the primary winding space in which the primary winding is to be disposed, and the secondary winding in which the secondary winding is to be disposed. A secondary winding button 92b for receiving the position and size of the line space, and an insulating layer button 92c for receiving the position and size of the insulating space in which the insulation barrier, insulating tape, etc. are to be placed are already arranged. And a selection button 92d for selecting each space and changing the order of the top, bottom, left, and right of each space.

  The table display screen 93 displays the sizes of the received primary winding space, secondary winding space, and insulation space, and the wires constituting the windings to be arranged in each primary winding space and secondary winding space. A winding specification table 93a showing the winding mode. The winding specification table 93a includes a “name” item for each space, a “type” item indicating whether each space is a primary winding space, a secondary winding space, or an insulating space, and a diagram of each space. 11 indicates the width in the horizontal direction, that is, the length in the direction of the winding axis A, and the vertical width in FIG. 11 of each space, that is, the length in the direction of contact with and away from the winding axis A. A “width” item to indicate, a “wire type” item to indicate the type of the strand, a “number of layers” item to indicate the number of layers of the strand wound in the direction of contact with and away from the winding axis A, It has a “parallel number” indicating the number of strands connected in parallel and a “number of turns” item indicating the number of windings of the strands.

  When the process of step S18 is completed, the CPU 11 receives the primary winding space, the secondary winding space, and the insulating space with the input device 15 (step S19).

  FIG. 12 is a flowchart showing the procedure of the subroutine of step S19. The CPU 11 accepts a change in the position and size of one or a plurality of primary winding spaces or the position and size of a primary winding space that has already been arranged by the input device 15 (step S31). Next, the CPU 11 determines whether there is a contradiction in the arrangement of the primary winding space (step S32). For example, it is determined whether or not the first winding space does not overlap with another secondary winding space, insulating space, or winding. When it is determined that there is no arrangement contradiction (step S32: YES), the CPU 11 determines whether or not the primary winding is separated from the other secondary winding by a predetermined distance or more (step S33). The predetermined distance is a distance determined by law, for example. The internal storage device 14 stores information about a predetermined distance according to the voltages of the primary winding and the secondary winding, and the CPU 11 stores the information and the potential difference between the primary winding and the secondary winding. The predetermined distance is specified based on When it is determined that the distance is less than the predetermined distance (step S33: NO), or when it is determined that there is an arrangement contradiction (step S32: NO), the CPU 11 changes the position or size of each space (step S34). For example, the CPU 11 can change the size of the primary winding to eliminate the contradiction in arrangement and to make the distance from the other secondary windings equal to or greater than a predetermined distance. Further, the position or size of the secondary winding may be changed so that the distance from the other secondary winding is a predetermined distance or more. Further, the position of the secondary winding space may be changed so as to be interlocked with the movement of the primary winding space. For example, the secondary coil space is moved by the same distance in the same direction as the movement direction of the primary winding space. Furthermore, when the primary winding space moves in the direction of another arranged secondary winding and overlaps a predetermined area or more, the positions of the primary winding space and the secondary winding space are exchanged. You may do it. The above-described method for changing the position and size of the primary winding space, the secondary winding space, and the insulating space is an example, and various other changing methods may be employed.

  When the process of step S34 is completed, or when it is determined that it is separated from the other secondary winding by a predetermined distance or more (step S33: YES), the CPU 11 is similar to the primary winding and includes one or a plurality of 2 A change in the position and size of the next winding or the position and size of the primary winding space that has already been arranged is received (step S35).

  Next, the CPU 11 determines whether there is a contradiction in the arrangement of the secondary winding space (step S36). When it is determined that there is no arrangement contradiction (step S36: YES), the CPU 11 determines whether or not the secondary winding is separated from the other primary winding by a predetermined distance or more (step S37). When it is determined that the distance is less than the predetermined distance (step S37: NO), or when it is determined that there is an arrangement contradiction (step S36: NO), the CPU 11 changes the position or size of each space (step S38).

  When the process of step S38 is completed, or when it is determined that it is separated from the other primary winding by a predetermined distance or more (step S37: YES), the CPU 11 determines the position and size of one or a plurality of insulating spaces, Alternatively, a change in the position and size of the already disposed primary winding space is accepted (step S39). Next, the CPU 11 determines whether there is an inconsistency in the arrangement of the insulating space (step S40). When it is determined that there is an arrangement contradiction (step S40: NO), the CPU 11 changes the position or size of each space (step S41). When it is determined that there is no arrangement contradiction (step S40: YES), or when the process of step S41 is completed, the CPU 11 ends the subroutine process.

FIGS. 13 and 14 are schematic diagrams illustrating a configuration example of the winding specification reception screen 9 showing the reception procedure of the primary winding space, the secondary winding space, and the insulation space. The user can instruct the creation of the secondary winding space by operating the input device 15, for example, the mouse, clicking the secondary winding button 92 b and dragging it on the winding specification display screen 91. The CPU 11 accepts the creation of the secondary winding by the input device 15 and displays a rectangular frame image representing the secondary winding space on the output device 16 as shown in FIG. Characters “S1” indicating a space in which the secondary winding is disposed are displayed at appropriate positions of the rectangular frame image, for example, at a substantially central portion inside the rectangular frame image. Then, the CPU 11 causes the output device 16 to display a strand setting button 93b for setting details such as the type and size of the strand in the vicinity of the “wire type” item in the winding specification table 93a.
Further, the user can specify the moving direction and moving amount of the secondary winding space by operating the input device 15 and clicking and dragging the center portion of the rectangular frame image of the secondary winding space. The CPU 11 receives the moving direction and moving amount of the secondary winding space by the input device 15, that is, the moved position, and outputs a rectangular frame image representing the secondary winding space to the changed position by the output device 16. indicate.
Further, the user can specify the size of the secondary winding space by operating the input device 15 and clicking and dragging the edge of the rectangular frame image of the secondary winding space. Then, the input device 15 receives a change in the size of the secondary winding, and displays a rectangular frame image of the secondary winding space having a dimension corresponding to the changed size.
Furthermore, the user operates the input device 15 to input the dimensions of the secondary winding space into the “height” item and the “width” item of the winding specification table 93a, thereby providing the secondary winding space. The CPU 11 receives the size of the secondary winding at the input device 15 at the input device 15 and the secondary winding space having a dimension corresponding to the received size. Displays a rectangular frame image. For example, as shown in FIG. 13, the CPU 11 accepts a secondary winding space having a height of 20 mm and a width of 1 mm as a space in which the secondary winding is arranged.

Similarly, the CPU 11 receives the position and size of the primary winding space or the insulating space by the input device 15 by the input device 15 and, as shown in FIG. 14, a rectangular frame representing the primary winding space or the insulating space. The image is displayed on the output device 16. Note that the rectangular frame images representing the primary winding space, the secondary winding space, and the insulation space are given different colors so that the user can visually identify each space. In addition, characters “P1” indicating the primary winding are attached to appropriate portions of the rectangular frame image indicating the primary winding space. Further, as shown in FIG. 14, when a plurality of primary winding spaces and secondary winding spaces are received, the letter “P2” is displayed on the rectangular frame image indicating the second primary winding space. The letter “S2” is attached to the rectangular frame image indicating the secondary winding space.
The above-described method for creating and receiving the primary winding space is an example, and the position and size of the primary winding space may be received by other methods.

  When the processing of the subroutine of step S19 is completed, the CPU 11 receives the winding mode of the strands with the input device 15 (step S20).

  FIG. 15 is a flowchart showing the procedure of the subroutine of step S20. When the operation of the strand setting button 93b is received by the input device 15, the CPU 11 displays the strand setting screen 10 on the output device 16, and the input device 15 indicates the type of strand and the cross-sectional shape of the strand. Accept (step S51). Next, the CPU 11 receives the dimension of the strand by the input device 15 (step S52), and further receives the insulation film thickness of the strand (step S53).

FIG. 16 is a schematic diagram illustrating a configuration example of the strand setting screen 10. The strand setting screen 10 includes a registered strand list 101 arranged on the left side, a strand name accepting unit 102 arranged above the right side, a strand type accepting unit 103, and a strand size accepting unit 104. A film thickness receiving unit 105, a strand axis section display screen 106, and an OK button 107 are provided.
The registered strand list 101 displays the names of strands that have been used and registered in the past. The user can reuse any strand used in the past by selecting any one of the names displayed in the list with the input device 15. The strand name receiving unit 102 is a text field in which a name of a specific strand is input, for example. The strand type reception unit 103 is a pull-down menu for selecting a specific strand from a plurality of types of strands, for example, a round wire, a square wire, and a stranded wire. In addition, a round wire is a strand which has a conducting wire with a circular axial cross section, a square wire is a strand which has a conducting wire whose axial cross section is a rectangle, and a twisted wire is a strand having a plurality of twisted conducting wires. The strand size receiving unit 104 and the insulating film thickness receiving unit 105 are, for example, text fields.
The user can select a desired line type from the strand type receiving unit 103, and by inputting desired dimensions to the strand size receiving unit 104 and the insulating film thickness receiving unit 105, the wire and the insulating film thickness are input. Can be edited. When the strand is a round wire or a stranded wire, the diameter of the strand is accepted. For example, a diameter of 0.9 mm of the conductor portion and an insulation film thickness of 0.1 mm are accepted. When the strand is a square wire, the dimensions of the two sides of the strand are accepted. Note that when receiving the insulating film thickness, the number of insulating films may be received, and the insulating film thickness of each of the plurality of insulating films may be received. The user can select the strand selected on the strand setting screen 10 by selecting the OK button 107.

  Note that the user can instruct the registration of the edited wire by operating the add button on the input device 15, and the CPU 11 accepts the registration of the edited wire on the input device 15. In this case, various kinds of information for defining the wire can be stored in the internal storage device 14. Then, the user can select a desired strand from the registered strand list 101 with the input device 15, and when the CPU 11 accepts the selection of the registered strand with the input device 15, the accepted strand Is read from the internal storage device 14, and information specifying the registered strand is displayed on the output device 16.

  Next, the CPU 11 determines whether or not the selected strand is a stranded wire (step S54). When it determines with it being a twisted wire (step S54: YES), CPU11 receives the pitch of a twisted wire with the input device 15 (step S55), and receives the twist number of a strand (step S56).

When the process of step S56 is completed, or when it is determined that the wire is not a twisted wire (step S54: NO), the CPU 11 receives the number of turns of the wire through the input device 15 (step S57).
When receiving the number of turns of the strand, the CPU 11 determines the primary winding space or 2 based on the size of the strand and the size of the primary winding space or the secondary winding space around which the strand is wound. It is configured to determine whether or not there is a contradiction between the next winding space and the wire information, and when there is a contradiction, the output device 16 displays a warning. Moreover, you may comprise so that the dimension of the primary winding space or the secondary winding space by which the said strand is wound may be changed according to a winding aspect.
Next, the CPU 11 accepts the number of layers of strands that are laminated and wound in the direction in which the input device 15 contacts and separates from the winding axis A (step S58). Further, the CPU 11 receives the number of strands connected in parallel by the input device 15 (step S59), and ends the process.

  Specifically, the user inputs numerical values in the “number of layers” item, the “number of parallel” item, and the “number of turns” item of the winding specification table 93a in the processes of steps S57 to S59 to input the number of strands of wires The number of turns and the number of turns can be specified, and the CPU 11 receives the number of turns, the number of parallels, and the number of turns with the input device 15.

  When the process of step S20 is completed, the CPU 11 determines, based on the position and size of the primary winding space and the secondary winding space received in step S19, and the winding mode of the wire received in step S20. A two-dimensional wire shape model is generated (step S21). The strand shape model is a model that two-dimensionally represents the shape, position, and size of each of a plurality of strand sections substantially parallel to the core section.

FIG. 17 is a schematic diagram illustrating a configuration example of the winding specification reception screen 9 including an image of a wire shape model. When the type of wire constituting the primary winding to be arranged in the primary winding space is a round wire, the number of layers is 1, the number of parallels is 1 and the number of turns is 10, the winding axis as shown in FIG. The strand cross section that appears when one strand is wound around the bobbin with the same pitch and 10 layers in the A direction is displayed together with the core cross section. That is, a strand shape model in which 10 circular strand sections are arranged in the horizontal direction is generated and displayed.
As shown in FIG. 17, by displaying the two-dimensional wire shape model generated in step S21, the user can visually confirm the winding state of the wire.

FIG. 18 is a schematic diagram illustrating an example of a wire shape model in another winding mode. The left figure of FIG. 18A shows a winding mode in which the type of wire in the primary winding space is a round wire, the number of layers is 2, the number of parallels is 1, and the number of turns is 10 by the user using the input device 15. A schematic diagram showing a part of the wire shape model generated when the CPU 11 accepts the winding mode by the input device 15 and the right diagram in FIG. It is a conceptual diagram which shows a state, ie, a serial connection state.
The left figure of FIG. 18B shows the winding mode in which the type of the wire in the primary winding space is a round wire, the number of layers is 1, the number of parallels is 2, and the number of turns is 10 at the input device 15. A schematic diagram showing a part of the wire shape model generated when the CPU 11 receives the winding mode by the input device 15 and the right figure in FIG. 18B is a conceptual diagram showing a parallel connection state. FIG.

  FIG. 19 is a schematic diagram illustrating a configuration example of the winding specification reception screen 9 in which the winding mode of each space is set. In the example shown in FIG. 19, the strand is wound 10 times in the first secondary winding space, the strand is wound 10 times in the first and second primary winding spaces, A wire shape model in which the wire is wound 5 times in the secondary winding space 2 is displayed.

Next, the CPU 11 determines whether or not the determination of the winding specification has been received by the input device 15 (step S22). When it is determined that the determination of the winding specification has not been received (step S22: NO), the CPU 11 The process returns to step S18. When it is determined that the winding specification has been determined (step S22: YES), the CPU 11 inputs a circuit model representing a circuit connected to the transformer, such as a flyback converter, a push-pull converter, a forward converter, etc., to the input device 15. (Step S23), and the primary winding and the secondary winding are connected to the received circuit model (Step S24).
A user can easily generate a model of a transformer formed by connecting the circuit model to a transformer only by designating a desired circuit model with the input device 15.

Then, the CPU 11 represents the transformer analysis model, that is, the core shape and the wire shape by a combination of a plurality of polygons based on the two-dimensional or three-dimensional core shape model and the two-dimensional wire shape model. The generated mesh is generated (step S25).
Since the mesh generation method is a well-known and commonly used technique, detailed description thereof is omitted.

  Next, the CPU 11 numerically analyzes the performance of the transformer using the generated analysis model of the transformer (step S26). For example, the electromagnetic field analysis of the transformer is performed, and the magnetic field around the core and the strands, the current density flowing through the strands, and the like are calculated. The method of numerical analysis is not particularly limited.

  Then, as a result of the calculation, the CPU 11 displays, for example, a magnetic field distribution, a contour diagram showing the current distribution, a calculation result table, a graph, and the like on the output device 16 (step S27), and ends the process. When displaying the calculation result, it may be configured to determine whether or not a predetermined legal regulation is satisfied from the voltage between the strands and to output the determination result by the output device 16.

In the analysis model generation method, the analysis model generation device 1, the computer program 20, and the recording medium 2 according to the embodiment configured as described above, the winding is performed with fewer procedures than the conventional analysis model generation method. It is possible to easily generate an analysis model of a transformer that accepts the specification of the wire and reflects the winding mode of the wire in detail, and can easily change the design of the analysis model.
Specifically, the transformer specification reflecting the number of turns, the number of layers, and the kind of wire in the winding space can be received with fewer procedures, and an analysis model of the transformer can be easily generated. . Further, it is possible to easily generate an analysis model of a transformer reflecting a round wire, a square wire, and a stranded wire as types of strands.
In addition, by the processing of steps S31, 35, and 39, the arrangement of a plurality of primary winding spaces, secondary winding spaces, and insulating spaces that should be juxtaposed in the direction of the winding axis A and in the direction of contact with and away from the winding axis. The relative position and size of the primary winding space, the secondary winding space, and the insulating space can be freely changed without making the user aware of the wire. Can do.
Furthermore, by the processing of steps S34, 38, 41, the other primary winding space in conjunction with one primary winding space, secondary winding space or insulation space without making the user aware of the strands, The position and size of the secondary winding space or the insulating space can be freely changed.
Therefore, the user can change the design of the relative positional relationship between the first winding space, the second winding space, and the insulating space without being aware of the wires, that is, the design change related to the relative position and size of each space. It can be repeated in a short time, and the analysis result can be efficiently fed back to the design work. Moreover, the design change of the winding mode of the strand can be repeated in a short time, and the analysis result can be efficiently fed back to the design work. Electromagnetic field analysis using an analysis model that reflects in detail the relative positions of multiple windings and the winding manner of the wires makes it easier to identify the factors of current distribution in the wires that make up the transformer, for example. Therefore, it is possible to effectively support a small and low-loss transformer design.

  In addition, the number of strands connected in parallel can be easily specified, and an analysis model of the transformer can be generated.

  Furthermore, the user generates an analysis model of the transformer by concentrating on the relative positional relationship between the primary winding space, the secondary winding space, and the insulation space without being conscious of predetermined laws or standards. The design of the analysis model can be changed.

  In the above-described embodiment, the wire shape model is generated by receiving the number of turns of the wire, the number of layers, etc., but other wire winding methods are accepted. The wire shape model may be generated. For example, the output device 16 displays a dense winding button and a space winding button on the winding specification reception screen 9, and the CPU 11 is configured to receive a winding method such as dense winding and space winding with the input device 15. Also good.

FIG. 20 is a schematic diagram conceptually showing a two-dimensional wire shape model in the case of dense winding and space winding. FIG. 20A shows a closely wound two-dimensional wire shape model. In the case of dense winding, the wire is wound around the bobbin so that the wire is in close contact in the direction of the winding axis A. Based on the size of the primary or secondary winding space, the size of the wire, and the insulation coating thickness Thus, the number of turns of the wire can be determined. For example, when the dimension of the primary winding space or the secondary winding space in the direction of the winding axis A is 10 mm, the diameter of the round wire is 0.9 mm, and the insulation film thickness is 0.1 mm, the number of turns of the wire Becomes 10, and the wire shape as shown in FIG. 20A can be specified.
FIG. 20B shows a space-wound two-dimensional wire shape model. In the case of space winding, the wire is wound around the bobbin so that the strands are spaced apart at a predetermined distance at equal intervals in the direction of the winding axis A. Moreover, you may comprise so that the distance between the strands in a two-dimensional space may be received. The control unit can determine the number of turns of the wire based on the distance between the wires, the size of the primary winding space or the secondary winding space, the size of the wire, and the insulation coating thickness. For example, the dimension of the primary winding space or the secondary winding space in the direction of the winding axis A is 9 mm, the diameter of the round wire is 0.9 mm, the insulation film thickness is 0.1 mm, and the distance between the wires is 1 mm. , The number of turns of the strand becomes 5, and the strand shape as shown in FIG. 20B can be specified.

  Moreover, in the above-described embodiment, when there are a plurality of strands, the positional relationship between the strands of each layer is not accepted, but the positional relationship between the strands of each layer is accepted. You may comprise. For example, the output device 16 may display an opposing placement button, a shifted placement button, or the like on the winding specification reception screen 9, and the CPU 11 may be configured to receive the positional relationship between the strands of each layer with the input device 15. good.

FIG. 21 is a schematic diagram conceptually showing a two-dimensional wire shape model when wires are arranged oppositely and shifted. FIG. 21A shows a two-dimensional wire shape model when the wires of each layer are arranged to face each other in a direction substantially perpendicular to the winding axis A. FIG. FIG. 21B shows a two-dimensional strand shape model when the strands of each layer are arranged so as not to be positioned in a direction substantially perpendicular to the winding axis A. In addition, the distance which shifts the strand of each layer is not specifically limited. Moreover, you may comprise so that the deviation | shift amount of a strand may be received.
The user can instruct the creation of the wire shape model as shown in FIGS. 21A and 21B by operating the opposing placement button or the shifted placement button with the input device 15, and the CPU 11 The input device 15 receives the instruction and generates a two-dimensional wire shape model as shown in FIG. Therefore, the analysis model generation apparatus 1 can receive a winding specification as shown in FIG. 21 with fewer steps, generate a two-dimensional wire shape model, and perform numerical analysis of the transformer.

  In the above-described embodiments and modifications, the primary winding space, the secondary winding space, and the insulating layer are individually configured to receive the position and size of each space. When the space is moved, the position and size of each space may be received while restraining the relative position of each space so that other spaces are also linked.

  In addition, after setting the primary winding space or the secondary winding space, it is configured to receive the winding mode of the strand, but first accept the winding mode of the strand, It is configured to present a primary winding space or a secondary winding space having a corresponding dimension, and then accept the position and size of the primary winding space or the secondary winding space and generate a wire shape model You may do it.

  Furthermore, in the embodiment, the case where an analysis model of a transformer is generated as an example has been described. However, electromagnetic parts formed by winding a winding around a core, for example, a reactor, an induction machine, various motors, an electromagnetic relay, etc. The present invention may be applied to the generation of the analysis model.

  It should be noted that the embodiment disclosed this time is illustrative in all respects and is not restrictive. The scope of the present invention is defined by the terms of the claims, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

It is a block diagram which shows the structure of the analysis model production | generation apparatus which concerns on embodiment of this invention. It is a flowchart which shows the process sequence of CPU which implements the analysis model production | generation method concerning this invention. It is a flowchart which shows the process sequence of CPU which implements the analysis model production | generation method concerning this invention. It is a schematic diagram which shows the structural example of a core shape selection screen. It is a perspective view of an EE type core. It is a schematic diagram which shows an example of the transformer using an EE type | mold core. It is a schematic diagram which shows the structural example of a bobbin selection screen. It is the schematic diagram which looked at multiple types of bobbins from the direction of a winding axis. It is explanatory drawing for demonstrating notionally the determination method of a cut surface. It is a schematic diagram which shows an example of a two-dimensional core shape model. It is a schematic diagram which shows the structural example of a winding specification reception screen. It is a flowchart which shows the procedure of the subroutine of step S19. It is a schematic diagram which shows the structural example of the coil | winding specification reception screen which showed the reception procedure of primary winding space, secondary winding space, and insulation space. It is a schematic diagram which shows the structural example of the coil | winding specification reception screen which showed the reception procedure of primary winding space, secondary winding space, and insulation space. It is a flowchart which shows the procedure of the subroutine of step S20. It is a schematic diagram which shows the structural example of a strand setting screen. It is a schematic diagram which shows the structural example of the winding specification reception screen containing the image of a strand shape model. It is a schematic diagram which shows an example of the wire shape model in another winding aspect. It is a schematic diagram which shows the structural example of the winding specification reception screen in which the winding aspect of each space was set. It is a schematic diagram which shows notionally the two-dimensional strand shape model at the time of densely winding and space winding. It is a schematic diagram which shows notionally the two-dimensional strand shape model at the time of strand arrangement | positioning facing and shifting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Analysis model production | generation apparatus 2 Recording medium 3 Server computer 11 CPU
12 RAM
13 External Storage Device 14 Internal Storage Device 15 Input Device 16 Output Device 17 Communication Interface 20 Computer Program

Claims (16)

In an analysis model generation method for generating an analysis model used for numerical analysis of an electromagnetic component formed by winding a winding around a core based on a core shape model representing a three-dimensional core shape,
Based on the three-dimensional core shape model, a procedure for generating a two-dimensional core shape model representing a core cross section substantially parallel to the winding axis;
With respect to the core cross section expressed by the two-dimensional core shape model, the position and size of the winding space in which the winding is to be arranged , and the number of turns of the wire constituting the winding to be arranged in the winding space , a step of receiving the number of layers of strands wound laminated around the direction toward or away from, as well as a winding manner, including a cross-sectional shape and dimensions of the plain line relative to the winding shaft,
The position and size of the received winding space, a procedure based on the winding manner to produce a wire shape model representing a substantially parallel plurality of strands cross the core cross section,
Generating an analysis model of an electromagnetic component in which the core shape and the wire shape are expressed by a combination of a plurality of polygons based on the generated two-dimensional wire shape model and the core shape model. An analysis model generation method. Analysis model generating method according to claim 1 the cross-sectional shape of the strands, characterized in that it comprises at least one round wire, rectangular wire and stranded wire cross-sectional shape. The procedure for accepting the winding mode of the wire is as follows:
Analysis model generating method according to claim 1 or claim 2, characterized in that it comprises the steps of accepting a number of strands in parallel connection. The procedure for receiving the position and size of the winding space is as follows:
A procedure for receiving the position and size of a plurality of winding spaces to be juxtaposed in the winding axis direction and / or in the direction approaching or separating from the winding axis;
The method for generating an analysis model according to any one of claims 1 to 3 , further comprising: a procedure for receiving a change in the position and size of the plurality of received winding spaces. When receiving a change in the position and size of one of the winding space, claim, characterized in that it comprises the steps in accordance with the contents of the changes that have accepted to change the position and size of the other winding space 4 The analysis model generation method described in 1. The procedure for receiving the position and size of the winding space is as follows:
The analysis model generation method according to any one of claims 1 to 5 , further comprising a procedure of receiving positions and sizes of a plurality of winding spaces so that the winding spaces are separated from each other. Wherein the electromagnetic component analysis model generating method according to any one of claims 1 to 6, characterized in that a transformer. In an analysis model generation device that generates an analysis model used for numerical analysis of an electromagnetic component formed by winding a winding around a core based on a core shape model representing a three-dimensional core shape,
Means for generating a two-dimensional core shape model representing a core cross section substantially parallel to the winding axis based on the three-dimensional core shape model;
Winding space receiving means for receiving the position and size of the winding space in which the winding is to be arranged with respect to the core cross section represented by the two-dimensional core shape model;
Including the number of turns of the wire constituting the winding to be arranged in the winding space, the number of layers of the wire wound in a direction in contact with and away from the winding axis, and the cross-sectional shape and dimensions of the wire A winding mode receiving means for receiving a winding mode;
The position and size of the winding space receiving unit winding space accepted, before on the basis of the Kimaki times aspect reception unit winding manner accepted, represent substantially parallel multiple strands cross core cross-section A means for generating a finished wire shape model;
And a means for generating an analysis model of an electromagnetic component in which the core shape and the wire shape are expressed by a combination of a plurality of polygons based on the generated two-dimensional wire shape model and the core shape model. Analysis model generation device. Analysis model generating apparatus according to claim 8, characterized in that it comprises at least one cross-sectional shape round wire, rectangular wire and stranded wire of a cross-sectional shape of the wire. The winding mode reception means includes:
The analysis model generation device according to claim 8 or 9, comprising means for receiving the number of strands connected in parallel. Winding space reception means
Means for receiving the position and size of a plurality of winding spaces to be juxtaposed in the direction of the winding axis and / or in the direction close to or away from the winding axis;
The analysis model generation device according to any one of claims 8 to 10 , further comprising: a unit configured to receive a change in the position and size of the plurality of received winding spaces. When the winding mode reception means receives a change in the position and size of one winding space, it comprises means for changing the position and size of another winding space according to the content of the received change. The analysis model generation device according to claim 11 . The winding space receiving means
The analysis model generation device according to any one of claims 8 to 12 , wherein positions and sizes of a plurality of winding spaces are received so that the winding spaces are separated from each other. . Wherein the electromagnetic component analysis model generating apparatus according to any one of claims 8 to 13, characterized in that a transformer. A computer program for causing a computer to generate an analysis model used for numerical analysis of an electromagnetic component formed by winding a winding around a core based on a core shape model representing a three-dimensional core shape,
A procedure for causing a computer to generate a two-dimensional core shape model representing a core cross section substantially parallel to the winding axis based on the three-dimensional core shape model;
The position and size of the winding space in which the winding is to be arranged, and the wire constituting the winding to be arranged in the winding space with respect to the core cross section expressed by the two-dimensional core shape model turns, the number of layers of strands wound laminated wound toward or away from relative to the winding axis, and on the basis of the winding mode comprising a cross-sectional shape and dimensions of the plain lines, a plurality substantially parallel to the core cross section To generate a wire shape model representing a wire cross section of
And a step of causing the computer to generate an analysis model of an electromagnetic component in which the core shape and the wire shape are expressed by a combination of a plurality of polygons based on the generated two-dimensional wire shape model and the core shape model. A computer program characterized by the above. A recording medium in which the computer program according to claim 15 is recorded so as to be readable by a computer.

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