Method, device, electronic device and storage medium for determining sound field of magnetically controlled transformer

Abstract

The present invention discloses a method, device, electronic device and storage medium for determining the acoustic field of a magnetically controlled transformer. The method comprises: obtaining a transformer geometric model of the magnetically controlled transformer and a plurality of dielectric characteristic parameters of a viscous medium in the magnetically controlled transformer, wherein the transformer geometric model is used to represent an equivalent circuit model obtained by geometrically modeling the magnetically controlled transformer; constructing an acoustic analysis model of the magnetically controlled transformer based on the transformer geometric model and the plurality of dielectric characteristic parameters, wherein the acoustic analysis model is used to represent a control equation model for acoustically analyzing the magnetically controlled transformer by integrating the plurality of characteristics of the viscous medium; determining an acoustic field analysis result of the magnetically controlled transformer based on the acoustic analysis model, wherein the acoustic field analysis result at least includes an acoustic field analysis cloud map or an acoustic field analysis curve map of the magnetically controlled transformer. The present invention solves the technical problem that the acoustic field result of the magnetically controlled transformer obtained in the related art is of low accuracy.

Description

Technical Field

[0001] The present invention relates to the field of transformer sound field determination, and in particular to a method, device, electronic equipment and storage medium for determining the sound field of a magnetically controlled transformer. Background Art

[0002] As a new type of power equipment, the magnetically controlled transformer, also known as the magnetically controlled distribution transformer, has voltage regulation and reactive power compensation capabilities, and can effectively deal with power quality pollution. As a typical multi-physical field coupling device, the magnetically controlled transformer is affected by multiple physical fields during operation, forming a more complex coupling relationship. At the same time, the noise generated during operation may endanger people's health and affect their daily lives. Therefore, in order to protect residents from noise interference, the noise research of the magnetically controlled transformer is of great significance.

[0003] At present, the research on the acoustic field of oil-immersed magnetic control transformers in related technologies is often limited to experimental measurement or finite element numerical calculation. For experimental measurement, it is usually to directly measure the external noise field of the oil-immersed transformer, but this method is difficult to carry out experiments on large-capacity transformers. At the same time, for transformer design, it is difficult to carry out a large number of noise tests to determine the best noise reduction structure. For the finite element calculation method, it is usually measured on the outer casing of the oil-immersed transformer. This is used as an excitation to perform finite element numerical calculations or structural acoustic coupling calculations of the transformer body with oil, outer casing, and air. In the above method, only a simple coupling relationship between structure and acoustics is realized, and the solution is obtained by establishing a coupling relationship between sound pressure and acceleration. The complex multi-field influence inside the transformer and the acoustic loss caused by oil as a viscous material will cause the obtained sound field results of the magnetic control transformer to be less accurate.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method, device, electronic device and storage medium for determining the sound field of a magnetically controlled transformer, so as to at least solve the technical problem that the sound field results of the magnetically controlled transformer obtained in the related art are of low accuracy.

[0006] According to one aspect of an embodiment of the present invention, a method for determining the acoustic field of a magnetically controlled transformer is provided, comprising: obtaining a transformer geometric model of the magnetically controlled transformer and a plurality of dielectric characteristic parameters of a viscous medium in the magnetically controlled transformer, wherein the transformer geometric model is used to represent an equivalent circuit model obtained by geometrically modeling the magnetically controlled transformer, and the viscous medium at least includes transformer oil in the magnetically controlled transformer; constructing an acoustic analysis model of the magnetically controlled transformer based on the transformer geometric model and the plurality of dielectric characteristic parameters, wherein the acoustic analysis model is used to represent a control equation model for acoustically analyzing the magnetically controlled transformer by integrating the plurality of characteristics of the viscous medium; determining an acoustic field analysis result of the magnetically controlled transformer based on the acoustic analysis model, wherein the acoustic field analysis result at least includes an acoustic field analysis cloud diagram or an acoustic field analysis curve diagram of the magnetically controlled transformer.

[0007] Optionally, based on the transformer geometric model and multiple medium characteristic parameters, an acoustic analysis model of the magnetic control transformer is constructed, including: obtaining a preset fluid motion analysis model, wherein the preset fluid motion analysis model is used to represent a preset equation model describing fluid motion, and the preset fluid motion analysis model at least includes a mass conservation equation, a momentum conservation equation, and an energy conservation equation; based on the preset fluid motion analysis model, the transformer geometric model and multiple medium characteristic parameters, an acoustic analysis model of the magnetic control transformer is constructed.

[0008] Optionally, based on a preset fluid motion analysis model, a transformer geometric model and multiple dielectric characteristic parameters, an acoustic analysis model of a magnetically controlled transformer is constructed, including: based on multiple dielectric characteristic parameters and the energy conservation equation in the preset fluid motion analysis model, a target energy conservation model is constructed, wherein the target energy conservation model is used to represent an equation model obtained by reconstructing the energy conservation equation based on multiple dielectric characteristic parameters; based on multiple dielectric characteristic parameters and the momentum conservation equation, a target momentum conservation model is constructed, wherein the target momentum conservation model is used to represent an equation model obtained by reconstructing the momentum conservation equation based on multiple dielectric characteristic parameters; based on the target energy conservation model, the target momentum conservation model and the transformer geometric model, an acoustic analysis model of a magnetically controlled transformer is constructed.

[0009] Optionally, the plurality of medium characteristic parameters include at least a sound pressure parameter of the viscous medium and at least one of the following: a flow velocity parameter, a temperature parameter and a viscosity parameter of the viscous medium.

[0010] Optionally, a target energy conservation model is constructed based on multiple medium characteristic parameters and an energy conservation equation in a preset fluid motion analysis model, including: constructing a target energy conservation model based on sound pressure parameters, temperature parameters and energy conservation equations in multiple medium characteristic parameters.

[0011] Optionally, a target momentum conservation model is constructed based on multiple medium characteristic parameters and momentum conservation equations, including: constructing a target momentum conservation model based on sound pressure parameters, temperature parameters, viscosity parameters and momentum conservation equations among the multiple medium characteristic parameters.

[0012] According to another aspect of an embodiment of the present invention, there is also provided an acoustic field determination device for a magnetically controlled transformer, comprising: an acquisition module for acquiring a transformer geometric model of the magnetically controlled transformer and a plurality of dielectric characteristic parameters of a viscous medium in the magnetically controlled transformer, wherein the transformer geometric model is used to represent an equivalent circuit model obtained by geometrically modeling the magnetically controlled transformer, and the viscous medium at least includes transformer oil in the magnetically controlled transformer; a construction module for constructing an acoustic analysis model of the magnetically controlled transformer based on the transformer geometric model and the plurality of dielectric characteristic parameters, wherein the acoustic analysis model is used to represent a control equation model for acoustically analyzing the magnetically controlled transformer by integrating the plurality of characteristics of the viscous medium; a determination module for determining an acoustic field analysis result of the magnetically controlled transformer based on the acoustic analysis model, wherein the acoustic field analysis result includes at least an acoustic field analysis cloud diagram or an acoustic field analysis curve diagram of the magnetically controlled transformer.

[0013] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0014] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0015] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0016] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0017] According to another aspect of the embodiments of the present invention, a computer program is further provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0018] In an embodiment of the present invention, a method for determining the acoustic field of a magnetically controlled transformer is provided, comprising: obtaining a transformer geometric model of the magnetically controlled transformer and a plurality of dielectric characteristic parameters of a viscous medium in the magnetically controlled transformer, wherein the transformer geometric model is used to represent an equivalent circuit model obtained by geometrically modeling the magnetically controlled transformer, and the viscous medium at least includes transformer oil in the magnetically controlled transformer; based on the transformer geometric model and the plurality of dielectric characteristic parameters, an acoustic analysis model of the magnetically controlled transformer is constructed, wherein the acoustic analysis model is used to represent a control equation model for acoustically analyzing the magnetically controlled transformer by integrating the plurality of characteristics of the viscous medium; based on the acoustic analysis model, an acoustic field analysis result of the magnetically controlled transformer is determined, wherein the acoustic field analysis result at least includes an acoustic field analysis cloud map or an acoustic field analysis curve map of the magnetically controlled transformer. It is easy to notice that the present application obtains the transformer geometric model of the magnetically controlled transformer and a plurality of dielectric characteristic parameters, constructs an acoustic analysis model of the magnetically controlled transformer, and then determines the acoustic field analysis result of the magnetically controlled transformer, and particularly considers the influence of transformer oil as a viscous medium on sound waves, thereby providing a more accurate acoustic field prediction. The viscous medium in the magnetron transformer has a significant influence on the propagation and attenuation of the sound field. By introducing a variety of medium characteristic parameters, the acoustic characteristics of the medium can be more accurately described, thereby improving the authenticity and accuracy of the established acoustic analysis model. By adopting a variety of medium characteristic parameters of the viscous medium, the acoustic characteristics of the magnetron transformer can be more comprehensively and accurately described. By constructing an acoustic analysis model containing a variety of medium characteristic parameters, more influencing factors can be considered, so that the acoustic analysis model can more comprehensively reflect the sound field conditions inside the magnetron transformer, and the sound field distribution of the magnetron transformer can be more accurately predicted, and more accurate sound field analysis results can be obtained, thereby helping engineers to better design and optimize the structure and performance of the magnetron transformer, thereby solving the technical problem of low accuracy of the sound field results of the magnetron transformer obtained in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 is a flow chart of a method for determining an acoustic field of a magnetically controlled transformer according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of an optional transformer geometric model according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of a mesh generation result of an optional magnetic control transformer according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of attenuation of sound waves of different frequencies in a heat sink of an optional magnetron transformer according to an embodiment of the present invention;

[0024] Figure 5 is a schematic diagram of a sound field determination device for a magnetically controlled transformer according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] According to one aspect of an embodiment of the present invention, a method for determining the sound field of a magnetically controlled transformer is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0028] Figure 1 is a flow chart of a method for determining the sound field of a magnetically controlled transformer according to an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0029] Step S101, obtaining a transformer geometric model of a magnetic control transformer and a plurality of medium characteristic parameters of a viscous medium in the magnetic control transformer.

[0030] The transformer geometric model is used to represent the equivalent circuit model obtained by geometrically modeling the magnetron transformer, and the viscous medium at least includes transformer oil in the magnetron transformer.

[0031] The above-mentioned magnetic control transformer may refer to a special type of transformer that uses magnetic control electronic devices to control and adjust voltage. The magnetic control transformer uses magnetic control electronic devices such as magnetrons and magnetron triodes to achieve voltage control. The magnetic control transformer may be composed of a magnetron and a transformer. The magnetron is used as a switching tube to adjust the output voltage by changing the on and off states of the magnetron. When the magnetron is turned on, the input voltage of the transformer will be transferred to the output end, thereby obtaining a high voltage output; and when the magnetron is turned off, the input voltage of the transformer will be isolated, thereby obtaining a low voltage output. The specific type of the magnetic control transformer can be determined according to actual needs and is not limited here.

[0032] The above-mentioned transformer geometric model may refer to a model used to represent the structure and electrical characteristics of the transformer. By geometrically modeling the physical structure of the transformer, the various parts of the transformer can be decomposed into different components, and an equivalent circuit model can be established based on their positions, shapes, and material properties. In the transformer geometric model, the parts considered may include the core, windings, insulation layers, etc. By geometrically modeling the structure of the transformer, the electrical characteristics of the transformer, such as the resistance, inductance, mutual inductance and other parameters of the transformer, can be more accurately analyzed and predicted. By geometrically modeling the physical structure of the transformer, a more accurate equivalent circuit model can be established, which is helpful to analyze and optimize the performance of the transformer.

[0033] The above-mentioned viscous medium may refer to the insulating material used to fill the inside of the magnetron transformer, which can be used for insulation, cooling and transmission of magnetic field. The viscous medium may include mineral oil or synthetic oil in the magnetron transformer, and may also include insulating paper, tape, etc. A suitable viscous medium can improve the insulation performance, heat dissipation effect and arc resistance of the transformer, and ensure the normal operation and safety of the transformer.

[0034] The above-mentioned multiple medium characteristic parameters may refer to a series of parameters describing the properties of viscous media, which may include but are not limited to sound pressure parameters, flow rate parameters, temperature parameters and viscosity parameters, etc., and may also include other parameters such as density, specific heat capacity, thermal conductivity, etc. The multiple medium characteristic parameters can be determined according to actual needs and are not limited here.

[0035] In an optional embodiment, the magnetic control transformer can be geometrically modeled, which may include information such as the transformer's dimensions, winding structure, and core shape. By measuring and analyzing the actual structure of the magnetic control transformer, an equivalent circuit model can be established, which can be used to calculate parameters such as magnetic field distribution and electromagnetic induction. In addition, a variety of dielectric characteristic parameters of transformer oil can be obtained, which may include dielectric constant, dielectric constant, conductivity, magnetic permeability, etc., which can be obtained through experimental measurement, literature reference, or simulation calculation, so that the process of obtaining the geometric model of the magnetic control transformer and the characteristic parameters of the viscous medium can be realized. An accurate geometric model can help establish an accurate electromagnetic field model, so that the magnetic field distribution in the magnetic control transformer can be accurately predicted, which helps to optimize the design and operation parameters of the magnetic control transformer. By obtaining the characteristic parameters of the viscous medium, the insulation between the winding and the core can be better understood, which helps to optimize the insulation design and improve the safety and stability of the magnetic control transformer. By analyzing the geometric model of the magnetic control transformer and the characteristic parameters of the viscous medium, the structure and working conditions of the magnetic control transformer can be optimized, thereby improving its efficiency and performance.

[0036] Step S102: constructing an acoustic analysis model of the magnetically controlled transformer based on the transformer geometry model and various dielectric characteristic parameters.

[0037] Among them, the acoustic analysis model is used to represent the control equation model for acoustic analysis of the magnetically controlled transformer by integrating various characteristics of the viscous medium.

[0038] The above-mentioned acoustic analysis model may refer to a mathematical model used to determine or analyze the acoustic propagation characteristics of a magnetic control transformer, which can be used to describe the propagation, reflection, refraction and other phenomena of sound waves in viscous media. In the acoustic analysis of magnetic control transformers, the acoustic analysis model can help understand the propagation characteristics of sound waves in the medium, so as to acoustically design and optimize the magnetic control transformer. The acoustic analysis model may include the following: the acoustic wave propagation equation, which describes the propagation process of sound waves in the medium, which may be a wave equation or a Helmholtz equation; boundary conditions, which can describe the reflection and refraction characteristics of sound waves when propagating between different media; material parameters, which may include parameters such as density, sound velocity, and attenuation coefficient of the medium, which will affect the propagation speed and attenuation of sound waves in the medium; coupling effect, which takes into account the influence of factors such as magnetic fields and electric fields that may exist in magnetic control transformers on the propagation of sound waves. By establishing an acoustic analysis model, the propagation of sound waves in magnetic control transformers can be quantitatively analyzed, and then the design parameters can be optimized to improve the performance and stability of the equipment. The acoustic analysis model can also help predict and solve possible acoustic problems and improve the reliability and safety of the equipment.

[0039] In an optional embodiment, an acoustic analysis model of a magnetic control transformer can be constructed according to the geometric model of the transformer and the medium characteristic parameters. The model can be based on the finite element method or other numerical methods to describe the behavior of acoustic wave propagation in the medium. A control equation is introduced into the acoustic analysis model to consider the influence of various characteristics of the viscous medium on the acoustic analysis of the magnetic control transformer. The control equation can be an acoustic wave propagation equation, a heat conduction equation, etc., which are used to describe the change of the sound field in the medium. Through the above steps, the acoustic analysis model of the magnetic control transformer can be constructed to more comprehensively consider the influence of various characteristics of the medium on the sound field, thereby achieving more accurate acoustic analysis. In the above steps, by considering various medium characteristic parameters and establishing a more detailed acoustic analysis model, the propagation and attenuation process of the sound field in the magnetic control transformer can be more accurately described. By introducing various medium characteristic parameters, the influence of the medium can be analyzed more deeply, such as the damping effect of the viscous medium, the sound wave propagation characteristics of the insulating material, etc., to provide a basis for improving the design and optimization of the magnetic control transformer. By introducing the control equation model, the influence of various characteristics of the medium on the sound field can be described more systematically, providing a basis for further acoustic simulation and analysis.

[0040] Step S103: determining the acoustic field analysis result of the magnetic control transformer based on the acoustic analysis model.

[0041] The acoustic field analysis result at least includes an acoustic field analysis cloud diagram or an acoustic field analysis curve diagram of the magnetic control transformer.

[0042] The above-mentioned sound field analysis results may refer to data and charts obtained by quantitatively analyzing the distribution and propagation of sound in a magnetron transformer. The sound field analysis results may include sound pressure level distribution diagrams, sound pressure level curves, sound field diagrams, etc., which are used to display the distribution of sound in space. In the sound field analysis of a magnetron transformer, the sound field analysis results may include sound field distribution diagrams of the magnetron transformer at different frequencies, showing the intensity and directional distribution of sound in space. Through the sound field analysis results, the acoustic performance of the magnetron transformer can be evaluated, the design can be optimized and parameters can be adjusted to improve the propagation effect and quality of sound. The sound field analysis can also include sound pressure level distribution curves at different frequencies, sound field uniformity analysis, sound field attenuation analysis, etc., to comprehensively evaluate the performance of the acoustic system.

[0043] In an optional embodiment, the design parameters and working conditions of the magnetic control transformer can be collected, including information such as magnetic field strength, frequency, and current. Then, the acoustic analysis software can be used to simulate the sound field of the magnetic control transformer to obtain a sound field analysis cloud map or a sound field analysis curve map. By analyzing the distribution and changes of the sound field, the intensity, frequency distribution and other information of the sound field can be determined. According to the sound field analysis results, the noise and vibration that may be generated by the magnetic control transformer during operation can also be evaluated, and the design scheme or process measures can be further optimized to reduce the noise level and improve the stability and reliability of the equipment. This application can intuitively understand the sound field distribution of the magnetic control transformer through the visual display of the sound field analysis cloud map or the sound field analysis curve map, provide reference and decision-making basis for engineers, and determine the sound field analysis results of the magnetic control transformer through the sound field analysis model, which can effectively improve the acoustic performance of the equipment, improve the reliability and stability of the equipment, and thus provide technical support and guarantee for the design and application of the magnetic control transformer.

[0044] In an embodiment of the present invention, a method for determining the acoustic field of a magnetically controlled transformer is provided, comprising: obtaining a transformer geometric model of the magnetically controlled transformer and a plurality of dielectric characteristic parameters of a viscous medium in the magnetically controlled transformer, wherein the transformer geometric model is used to represent an equivalent circuit model obtained by geometrically modeling the magnetically controlled transformer, and the viscous medium at least includes transformer oil in the magnetically controlled transformer; based on the transformer geometric model and the plurality of dielectric characteristic parameters, an acoustic analysis model of the magnetically controlled transformer is constructed, wherein the acoustic analysis model is used to represent a control equation model for acoustically analyzing the magnetically controlled transformer by integrating the plurality of characteristics of the viscous medium; based on the acoustic analysis model, an acoustic field analysis result of the magnetically controlled transformer is determined, wherein the acoustic field analysis result at least includes an acoustic field analysis cloud map or an acoustic field analysis curve map of the magnetically controlled transformer. It is easy to notice that the present application obtains the transformer geometric model of the magnetically controlled transformer and a plurality of dielectric characteristic parameters, constructs an acoustic analysis model of the magnetically controlled transformer, and then determines the acoustic field analysis result of the magnetically controlled transformer, and particularly considers the influence of transformer oil as a viscous medium on sound waves, thereby providing a more accurate acoustic field prediction. The viscous medium in the magnetron transformer has a significant influence on the propagation and attenuation of the sound field. By introducing a variety of medium characteristic parameters, the acoustic characteristics of the medium can be more accurately described, thereby improving the authenticity and accuracy of the established acoustic analysis model. By adopting a variety of medium characteristic parameters of the viscous medium, the acoustic characteristics of the magnetron transformer can be more comprehensively and accurately described. By constructing an acoustic analysis model containing a variety of medium characteristic parameters, more influencing factors can be considered, so that the acoustic analysis model can more comprehensively reflect the sound field conditions inside the magnetron transformer, and the sound field distribution of the magnetron transformer can be more accurately predicted, and more accurate sound field analysis results can be obtained, thereby helping engineers to better design and optimize the structure and performance of the magnetron transformer, thereby solving the technical problem of low accuracy of the sound field results of the magnetron transformer obtained in related technologies.

[0045] Optionally, based on the transformer geometric model and multiple medium characteristic parameters, an acoustic analysis model of the magnetic control transformer is constructed, including: obtaining a preset fluid motion analysis model, wherein the preset fluid motion analysis model is used to represent a preset equation model describing fluid motion, and the preset fluid motion analysis model at least includes a mass conservation equation, a momentum conservation equation, and an energy conservation equation; based on the preset fluid motion analysis model, the transformer geometric model and multiple medium characteristic parameters, an acoustic analysis model of the magnetic control transformer is constructed.

[0046] In an optional embodiment, a preset fluid motion analysis model can be first determined, which is used to describe the motion of the fluid inside the magnetic control transformer. The preset fluid motion analysis model can include equation models such as mass conservation equations, momentum conservation equations, and energy conservation equations, which can be used to describe the flow of the fluid inside the transformer. Then, based on the preset fluid motion analysis model, the transformer geometry model, and the medium characteristic parameters, an acoustic analysis model of the magnetic control transformer can be constructed. The obtained acoustic analysis model can be used to simulate and analyze parameters such as the sound field distribution and sound pressure level inside the transformer, so as to better understand the acoustic characteristics of the magnetic control transformer. Simulation and emulation based on the acoustic analysis model can help engineers better understand the acoustic characteristics of the transformer during the design stage and reduce the cost and time of trial and error. By establishing an acoustic analysis model, the acoustic performance of the magnetic control transformer under different working conditions can be better evaluated, and an important reference can be provided for acoustic optimization.

[0047] Optionally, based on a preset fluid motion analysis model, a transformer geometric model and multiple dielectric characteristic parameters, an acoustic analysis model of a magnetically controlled transformer is constructed, including: based on multiple dielectric characteristic parameters and the energy conservation equation in the preset fluid motion analysis model, a target energy conservation model is constructed, wherein the target energy conservation model is used to represent an equation model obtained by reconstructing the energy conservation equation based on multiple dielectric characteristic parameters; based on multiple dielectric characteristic parameters and the momentum conservation equation, a target momentum conservation model is constructed, wherein the target momentum conservation model is used to represent an equation model obtained by reconstructing the momentum conservation equation based on multiple dielectric characteristic parameters; based on the target energy conservation model, the target momentum conservation model and the transformer geometric model, an acoustic analysis model of a magnetically controlled transformer is constructed.

[0048] In an optional embodiment, an energy conservation model can be reconstructed based on multiple medium characteristic parameters and the energy conservation equation in the preset fluid motion analysis model to describe the energy propagation process of sound waves in the medium. And a momentum conservation model can be reconstructed based on multiple medium characteristic parameters and the momentum conservation equation to describe the momentum propagation process of sound waves in the medium. Finally, a complete acoustic analysis model of the magnetically controlled transformer can be established by combining the target energy conservation model, the target momentum conservation model and the transformer geometric model. This model can be used to predict the distribution and propagation characteristics of the sound field in the magnetically controlled transformer. By establishing an acoustic analysis model based on multiple medium characteristic parameters and a fluid motion analysis model, the distribution and propagation characteristics of the sound field in the magnetically controlled transformer can be more accurately predicted, which can help us to more deeply understand the characteristics of the sound field in the magnetically controlled transformer, thereby improving the accuracy and efficiency of the system design.

[0049] Optionally, the plurality of medium characteristic parameters include at least a sound pressure parameter of the viscous medium and at least one of the following: a flow velocity parameter, a temperature parameter and a viscosity parameter of the viscous medium.

[0050] In an optional embodiment, the sound pressure parameters of the viscous medium can be determined, that is, the pressure distribution of the sound field in the medium. By calculating the propagation path and reflection of the sound field in the medium, the distribution characteristics of the sound pressure can be obtained. The flow velocity parameters of the viscous medium can be determined, that is, the flow velocity when the sound field propagates in the medium. By considering the interaction between the fluid dynamics equation and the sound field, the flow velocity distribution in the medium can be calculated. The temperature parameters or viscosity parameters of the viscous medium can also be determined, that is, the temperature change or viscosity characteristics of the medium under the action of the sound field. The temperature change and viscosity characteristics of the medium in the sound field can be calculated by the heat conduction equation and the viscous fluid dynamics equation. By determining the medium characteristic parameters, the sound field propagation of the magnetic control transformer can be more accurately simulated and predicted, and the accuracy and reliability of the sound field analysis can be improved. By analyzing the sound pressure, flow velocity, temperature and viscosity parameters of the medium, the design and operation parameters of the magnetic control transformer can be optimized, and its sound field performance and efficiency can be improved. It can provide a reference basis for the sound field control and optimization of the magnetic control transformer, and further improve its work efficiency and stability.

[0051] Optionally, a target energy conservation model is constructed based on multiple medium characteristic parameters and an energy conservation equation in a preset fluid motion analysis model, including: constructing a target energy conservation model based on sound pressure parameters, temperature parameters and energy conservation equations in multiple medium characteristic parameters.

[0052] In an optional embodiment, the energy in the sound field can be converted into heat energy and other forms according to the energy conservation equation. The energy conservation equation is constructed to consider the heat transfer, mass transfer and other processes of the medium in the sound field. Then, the medium characteristic parameters, the preset fluid motion analysis model and the energy conservation equation can be combined to construct a target energy conservation model. This model can describe the energy transfer and conversion process in the sound field. Constructing a target energy conservation model can more accurately describe the energy transfer and conversion process in the sound field, help engineers better understand the sound field characteristics in the magnetic control transformer, and construct a target energy conservation model to improve the accuracy of the sound field simulation and provide a more reliable reference for the sound field design and optimization of the magnetic control transformer.

[0053] Optionally, a target momentum conservation model is constructed based on multiple medium characteristic parameters and momentum conservation equations, including: constructing a target momentum conservation model based on sound pressure parameters, temperature parameters, viscosity parameters and momentum conservation equations among the multiple medium characteristic parameters.

[0054] In an optional embodiment, the sound pressure parameters, temperature parameters and viscosity parameters in the sound field can be incorporated into the momentum conservation model. Through mathematical modeling and calculation, the momentum transfer and conversion characteristics inside the medium are analyzed. Through the solution and simulation of the model, the momentum distribution inside the medium is obtained, and then the characteristics and propagation characteristics of the sound field are determined. By analyzing the sound pressure parameters, temperature parameters and viscosity parameters in the sound field, the complex dynamic characteristics inside the medium can be revealed, providing an important reference for the optimal design and control of the sound field. Through the solution and simulation of the model, the momentum distribution in the sound field can be predicted, guiding the adjustment and optimization of the sound field in practical applications, and improving the system performance and efficiency.

[0055] The technical solution proposed in this application is described below in combination with an optional embodiment. This application proposes a method for calculating the acoustic field of a multifunctional magnetic control transformer based on viscous medium multi-parameters. By considering the influence of the internal flow field and temperature field of the transformer, combining various heat flow parameters of the transformer oil and the unique structure of the transformer heat sink, a viscous medium multi-parameter acoustic calculation model of the oil-immersed magnetic control transformer is established, and a more accurate simulation calculation of the internal and external noise fields of the oil-immersed magnetic control transformer is performed. This method is suitable for new multifunctional magnetic control transformers, has high calculation accuracy, and has a wide range of application prospects.

[0056] The present application proposes a method for calculating the acoustic field of a multifunctional magnetic control transformer based on multi-parameters of viscous media, which includes the following steps: establishing a geometric model of the magnetic control transformer, and deriving an acoustic calculation method for the oil-immersed magnetic control transformer under multi-parameters of viscous media, and then finely dividing the grids at the transformer heat sink, in the air, and in the oil, and adding the coupling relationship of multiple physical fields, and finally completing the establishment of a calculation method model for the multifunctional magnetic control transformer based on the material parameters provided by the experiment.

[0057] The present application provides a method for establishing a lumped parameter equivalent circuit model of a magnetically controlled transformer winding, comprising the following steps: establishing a geometric model, that is, a transformer geometric model. When establishing the geometric model, a 1 / 2 model can be used to reduce the amount of calculation. Based on the geometric model, the magnetic field of the magnetically controlled transformer can be transiently calculated. During the calculation, the solution domain is set to the oil and the transformer body, and the discretization of the linear unit is selected to reduce the amount of calculation. The solution step can be set to 0.0005s, and the calculation time is a total of 0.1s. The electromagnetic force on the winding obtained by the magnetic field calculation and the magnetization intensity in the iron core are used as excitations and added to structural mechanics as excitation sources for the winding vibration and the magnetostrictive vibration of the iron core, so as to perform linear NS acoustic-structural coupling.

[0058] The present application provides a multifunctional magnetic control transformer acoustic field calculation method based on multi-parameters of viscous media, including the following steps: deriving the linear NS equation, the fluid problem is based on three basic conservation equations, namely the continuity equation, that is, the mass conservation equation; the Navier-Stokes equation, that is, the momentum conservation equation; and the general heat transfer equation, that is, the energy conservation equation. The linear NS equation, that is, the preset fluid motion analysis model can be expressed as:

[0059] ;

[0060] Among them, time and spatial coordinate x as independent variables, and density as dependent variable , velocity field ,entropy . is temperature, is the viscous dissipation coefficient, is the total stress tensor, is the viscous stress tensor, is the local heat flux, Indicates possible mass sources, For possible heat sources, is a possible source of volume force. ,momentum , total entropy It is a conserved quantity. When considering the conservation of mass, M=0 in general.

[0061] Some thermodynamic relations are needed to reconstruct the energy conservation equation based on temperature and pressure variables. The energy conservation equation is reconstructed based on thermodynamic relations to define the thermal expansion coefficient (1 / K), isothermal compressibility coefficient (1 / Pa), isochoric specific heat capacity (J / kg / k), and constant pressure specific heat capacity (J / kg / k):

[0062] ;

[0063] Assumptions and , we can establish the differential formula of density and entropy:

[0064] ;

[0065] By giving the Maxwell relation:

[0066] ;

[0067] Combined with the transformation relationship between enthalpy u and entropy s in isobaric process With the above , The definition of , we can get the differential form of the final entropy:

[0068] ;

[0069] Then the energy conservation equation reconstructed with temperature and pressure variables is obtained. The above process is to construct the target energy conservation model based on the sound pressure parameters, temperature parameters and energy conservation equation among various medium characteristic parameters.

[0070] The constitutive equation is divided into the following state equations: pressure and temperature represent density, Stokes expression of viscous stress tensor, and Fourier heat conduction law, that is, based on the sound pressure parameters, temperature parameters, viscosity parameters and momentum conservation equations in various medium characteristic parameters, the target momentum conservation model is constructed; and then the target momentum conservation model can be expressed as follows:

[0071] ;

[0072] Where k is the thermal conductivity, is the dynamic viscosity, Represents bulk viscosity. Bulk viscosity is used to characterize compression and expansion effects and describes the direct difference between mechanical and thermodynamic pressure. All material properties are considered as temperature- and pressure-dependent variables and can therefore also be considered as spatially dependent quantities.

[0073] By repeatedly changing the above expression, we can get the temperature T, speed , the coupled equations of motion for an isotropic, compressible, viscous, and heat-conducting fluid with pressure p as the dependent variable, i.e., the acoustic analysis model, can be expressed as follows:

[0074] ;

[0075] This application provides a grid generation method for a multifunctional magnetic control transformer acoustic field calculation method based on multi-parameter viscous media. For fluid mechanics, the grid generation level is finer than the acoustic field grid generation. Inside the transformer fluid field, the grid generation of the fluid field is set to a maximum unit less than or equal to ,in, represents the speed of sound, Indicates the frequency of the sound wave; compared with the acoustic field, the mesh division is more detailed, and the viscous and heat loss boundary layers are set in the transformer heat sink. At the same time, in the external air, a perfect matching layer is set to simulate the infinite domain. The swept mesh division method is used in the perfect matching layer, which is divided into 5 layers in total, and a boundary layer is set at the boundary between the air domain and the perfect matching layer.

[0076] This application considers transformer oil as a viscous medium, the attenuation effect of sound waves in it, especially in the heat sink, and proposes a new mesh generation method to ensure the accuracy of finite element calculation. It also proposes finite element calculation under multiple parameters and considers the influence of thermal flow field on the internal noise of the transformer.

[0077] Figure 2 is a schematic diagram of an optional transformer geometric model according to an embodiment of the present invention, such as Figure 2 As shown, a transformer geometric model of an optional magnetic control transformer obtained in the present application is displayed.

[0078] Figure 3 is a schematic diagram of a mesh generation result of an optional magnetic control transformer according to an embodiment of the present invention, such as Figure 3 As shown, the results of meshing the transformer geometric model of the magnetic control transformer in this application are shown.

[0079] Figure 4 is a schematic diagram of attenuation of sound waves of different frequencies in a heat sink of an optional magnetic control transformer according to an embodiment of the present invention, such as Figure 4 As shown in the figure, the horizontal axis represents the arc length (mm), and the vertical axis represents the total sound pressure level (dB). The figure shows the attenuation effect of sound waves of different frequencies in the heat sink of the magnetron transformer obtained based on the acoustic analysis model proposed in this application.

[0080] According to another aspect of an embodiment of the present invention, a device for determining the sound field of a magnetically controlled transformer is also provided. The device can execute the method for determining the sound field of a magnetically controlled transformer of the above embodiment. The specific implementation method and preferred application scenario are the same as those of the above embodiment and will not be repeated here.

[0081] Figure 5 is a schematic diagram of a device for determining a sound field of a magnetically controlled transformer according to an embodiment of the present application, such as Figure 5 As shown, the device includes the following: an acquisition module 501, a construction module 502 and a determination module 503.

[0082] Among them, the acquisition module is used to obtain the transformer geometric model of the magnetic control transformer and various medium characteristic parameters of the viscous medium in the magnetic control transformer, wherein the transformer geometric model is used to represent the equivalent circuit model obtained by geometric modeling of the magnetic control transformer, and the viscous medium at least includes the transformer oil in the magnetic control transformer; the construction module is used to construct the acoustic analysis model of the magnetic control transformer based on the transformer geometric model and various medium characteristic parameters, wherein the acoustic analysis model is used to represent the control equation model for acoustic analysis of the magnetic control transformer that integrates various characteristics of the viscous medium; the determination module is used to determine the acoustic field analysis results of the magnetic control transformer based on the acoustic analysis model, wherein the acoustic field analysis results at least include the acoustic field analysis cloud map or acoustic field analysis curve map of the magnetic control transformer.

[0083] Among them, the construction module is also used to obtain a preset fluid motion analysis model, wherein the preset fluid motion analysis model is used to represent a preset equation model describing fluid motion, and the preset fluid motion analysis model at least includes the mass conservation equation, the momentum conservation equation and the energy conservation equation; based on the preset fluid motion analysis model, the transformer geometric model and multiple medium characteristic parameters, an acoustic analysis model of the magnetic control transformer is constructed.

[0084] Among them, the construction module is also used to construct a target energy conservation model based on multiple medium characteristic parameters and the energy conservation equation in the preset fluid motion analysis model, wherein the target energy conservation model is used to represent the equation model obtained by reconstructing the energy conservation equation based on multiple medium characteristic parameters; based on multiple medium characteristic parameters and the momentum conservation equation, a target momentum conservation model is constructed, wherein the target momentum conservation model is used to represent the equation model obtained by reconstructing the momentum conservation equation based on multiple medium characteristic parameters; based on the target energy conservation model, the target momentum conservation model and the transformer geometric model, an acoustic analysis model of the magnetic control transformer is constructed.

[0085] The plurality of medium characteristic parameters at least include a sound pressure parameter of the viscous medium and at least one of the following: a flow velocity parameter, a temperature parameter and a viscosity parameter of the viscous medium.

[0086] Among them, the construction module is also used to construct a target energy conservation model based on sound pressure parameters, temperature parameters and energy conservation equations among various medium characteristic parameters.

[0087] Among them, the construction module is also used to construct a target momentum conservation model based on sound pressure parameters, temperature parameters, viscosity parameters and momentum conservation equations among various medium characteristic parameters.

[0088] An embodiment of the present application further provides an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of the present invention when running.

[0089] The above-mentioned memory may refer to a device inside a computer for storing data and programs, and may include memory, hard disk, etc., wherein the memory may be used to temporarily store running programs and data, the hard disk may be used to store programs and data for a long time, and the memory may be used to enable the computer to read and write data, and execute programs; the above-mentioned processor may be responsible for executing instructions in computer programs and performing data processing, and may be responsible for controlling and executing various operations, including arithmetic operations, logical operations, data transmission, etc.

[0090] An embodiment of the present application further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0091] The above-mentioned computer storage medium may refer to a medium in a computer memory used to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser disks, etc.; the stored program included in the computer-readable storage medium may be a set of instructions that can be recognized and executed by a computer, running on an electronic computer, and is an information tool that meets certain needs of people.

[0092] An embodiment of the present application further provides a computer program product, including a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0093] The above-mentioned computer program product may refer to a software program that has been written, tested and released and can be run on a computer or other device. The computer program product may include an application, an operating system, tool software, etc., which is used to implement specific functions or solve specific problems.

[0094] An embodiment of the present application further provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0095] The above-mentioned non-volatile computer-readable storage medium may refer to a medium for storing data. The non-volatile computer-readable storage medium can keep the data from being lost when the power is off, and can be used to store long-term data, such as operating systems, applications, and user files. The non-volatile storage medium may include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0096] The embodiments of the present application further provide a computer program, which implements the methods in the above-mentioned embodiments of the present invention when executed by a processor.

[0097] The above-mentioned computer program may refer to a collection of instructions used to tell a computer to perform a specific task or operation. A computer program may be written by a programmer using a specific programming language and may include algorithms, data structures, logic, and control flows. A computer program may be used for a variety of purposes, including application software, operating systems, and the like.

[0098] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0099] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0100] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0101] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0102] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0103] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for determining the acoustic field of a magnetically controlled transformer, characterized in that: include: Acquire a transformer geometric model of a magnetic control transformer and a plurality of medium characteristic parameters of a viscous medium in the magnetic control transformer, wherein the transformer geometric model is used to represent an equivalent circuit model obtained by geometrically modeling the magnetic control transformer, the transformer geometric model is used to characterize the transformer structure and electrical characteristics of the magnetic control transformer, and the viscous medium at least includes transformer oil in the magnetic control transformer; Based on the transformer geometric model and the characteristic parameters of the multiple media, an acoustic analysis model of the magnetic control transformer is constructed, wherein the acoustic analysis model is used to represent a control equation model for acoustic analysis of the magnetic control transformer that incorporates the multiple characteristics of the viscous medium; Based on the acoustic analysis model, determining an acoustic field analysis result of the magnetically controlled transformer, wherein the acoustic field analysis result at least includes an acoustic field analysis cloud diagram or an acoustic field analysis curve diagram of the magnetically controlled transformer; Based on the transformer geometric model and the multiple medium characteristic parameters, an acoustic analysis model of the magnetic control transformer is constructed, including: obtaining a preset fluid motion analysis model, wherein the preset fluid motion analysis model is used to represent a preset equation model describing fluid motion, and the preset fluid motion analysis model at least includes a mass conservation equation, a momentum conservation equation, and an energy conservation equation; based on the preset fluid motion analysis model, the transformer geometric model and the multiple medium characteristic parameters, an acoustic analysis model of the magnetic control transformer is constructed.

2. The method for determining the sound field of a magnetically controlled transformer according to claim 1, characterized in that: Based on the preset fluid motion analysis model, the transformer geometric model and the multiple medium characteristic parameters, an acoustic analysis model of the magnetic control transformer is constructed, including: Based on the multiple medium characteristic parameters and the energy conservation equation in the preset fluid motion analysis model, a target energy conservation model is constructed, wherein the target energy conservation model is used to represent an equation model obtained by reconstructing the energy conservation equation based on the multiple medium characteristic parameters; Based on the multiple medium characteristic parameters and the momentum conservation equation, constructing a target momentum conservation model, wherein the target momentum conservation model is used to represent an equation model obtained by reconstructing the momentum conservation equation based on the multiple medium characteristic parameters; Based on the target energy conservation model, the target momentum conservation model and the transformer geometric model, an acoustic analysis model of the magnetic control transformer is constructed.

3. The method for determining the sound field of a magnetically controlled transformer according to any one of claims 1 to 2, characterized in that: The plurality of medium characteristic parameters at least include a sound pressure parameter of the viscous medium and at least one of the following: a flow velocity parameter, a temperature parameter and a viscosity parameter of the viscous medium.

4. The method for determining the sound field of a magnetically controlled transformer according to claim 2, characterized in that: Based on the multiple medium characteristic parameters and the energy conservation equation in the preset fluid motion analysis model, a target energy conservation model is constructed, including: The target energy conservation model is constructed based on the sound pressure parameter, the temperature parameter and the energy conservation equation among the multiple medium characteristic parameters.

5. The method for determining the sound field of a magnetically controlled transformer according to claim 2, characterized in that: Based on the multiple medium characteristic parameters and the momentum conservation equation, a target momentum conservation model is constructed, including: The target momentum conservation model is constructed based on the sound pressure parameter, temperature parameter, viscosity parameter and the momentum conservation equation among the multiple medium characteristic parameters.

6. A device for determining the sound field of a magnetron transformer, characterized in that: include: An acquisition module, used for acquiring a transformer geometric model of a magnetic control transformer and a plurality of medium characteristic parameters of a viscous medium in the magnetic control transformer, wherein the transformer geometric model is used for representing an equivalent circuit model obtained by geometrically modeling the magnetic control transformer, the transformer geometric model is used for characterizing the transformer structure and electrical characteristics of the magnetic control transformer, and the viscous medium at least includes transformer oil in the magnetic control transformer; A construction module, used to construct an acoustic analysis model of the magnetic control transformer based on the transformer geometric model and the multiple medium characteristic parameters, wherein the acoustic analysis model is used to represent a control equation model for acoustic analysis of the magnetic control transformer that incorporates multiple characteristics of the viscous medium; A determination module, configured to determine an acoustic field analysis result of the magnetic control transformer based on the acoustic analysis model, wherein the acoustic field analysis result at least includes an acoustic field analysis cloud diagram or an acoustic field analysis curve diagram of the magnetic control transformer; The construction module is also used to obtain a preset fluid motion analysis model, wherein the preset fluid motion analysis model is used to represent a preset equation model describing fluid motion, and the preset fluid motion analysis model at least includes a mass conservation equation, a momentum conservation equation, and an energy conservation equation; based on the preset fluid motion analysis model, the transformer geometric model, and the multiple medium characteristic parameters, an acoustic analysis model of the magnetic control transformer is constructed.

7. An electronic device, characterized in that: include: A memory storing an executable program; A processor is used to run the program, wherein the program executes the method for determining the sound field of a magnetically controlled transformer as described in any one of claims 1 to 5 when running.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is run, the device where the storage medium is located is controlled to execute the method for determining the sound field of a magnetically controlled transformer according to any one of claims 1 to 5.

9. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the method for determining the sound field of a magnetically controlled transformer according to any one of claims 1 to 5.

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