Reactor performance evaluation method, device, equipment and medium
By building semi-physical circuit simulation, electromagnetic simulation, and thermal simulation models, the excitation signal and temperature information of the reactor are obtained, solving the problem of inaccurate reactor performance evaluation and achieving more accurate performance evaluation.
Patent Information
- Application Number
- CN202510904332.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-01
- Publication Date
- 2025-11-25
AI Technical Summary
In the existing technology, the performance evaluation results of reactors are inaccurate, and pure circuit simulation cannot fully reflect the dynamic characteristics of the circuit system, resulting in inaccurate evaluation results.
A semi-physical circuit simulation model, an electromagnetic simulation model, and a thermal simulation model are used. The excitation signal of the reactor is obtained through the semi-physical circuit simulation and used as the excitation condition of the electromagnetic simulation model. Combined with material parameters, simulation is performed to obtain performance evaluation parameters. Heat loss mapping and thermal simulation are performed to obtain the temperature information of the reactor and finally determine its performance.
This improves the accuracy of reactor performance evaluation, making the evaluation results more consistent with actual operating conditions and enhancing the precision of the evaluation results.
Smart Images
Figure CN121009846A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power electronics, and more particularly to a reactor performance evaluation device, equipment, and dielectric. Background Technology
[0002] Currently, reactors play a crucial role in the power system field. To ensure the safe and stable operation of the power system, users need to evaluate the performance of reactors to identify problems in advance and prevent reactor equipment failures during operation.
[0003] Currently, reactor performance evaluation schemes are based on pure circuit simulation and electromagnetic-thermal coupling simulation. Specifically, the excitation conditions of the reactor are obtained through pure circuit simulation. Then, electromagnetic-thermal coupling simulation is performed based on these excitation conditions.
[0004] However, the operating conditions of circuits obtained through pure circuit simulation are relatively ideal. Especially in circuit systems that include energy storage components, pure circuit simulation cannot fully reflect the dynamic characteristics of the circuit system. Therefore, the excitation conditions of the reactor obtained through pure circuit simulation cannot reflect the actual operating conditions of the reactor, thus leading to inaccurate reactor performance evaluation results. Summary of the Invention
[0005] This application provides a method, apparatus, device, and medium for evaluating reactor performance, aiming to solve the technical problem of inaccurate reactor performance evaluation results.
[0006] In a first aspect, embodiments of this application provide a method for evaluating the performance of a reactor, comprising:
[0007] Based on the target reactor, build a semi-physical circuit simulation model, an electromagnetic simulation model, and a thermal simulation model;
[0008] The excitation signal of the target reactor is obtained by performing simulation using the aforementioned hardware-in-the-loop simulation model.
[0009] The excitation signal is set as the excitation condition of the electromagnetic simulation model;
[0010] Set the first material parameter of the target reactor as the first simulation condition of the electromagnetic simulation model;
[0011] Based on the first simulation conditions and the excitation conditions, the electromagnetic simulation model is used to perform simulation to obtain the first performance evaluation parameters of the target reactor.
[0012] The heat loss distribution data of the target reactor is obtained by mapping the first performance evaluation parameters to heat loss.
[0013] The heat loss distribution data is input into the thermal simulation model and thermal simulation is performed to obtain the first temperature information of the target reactor.
[0014] Based on the first temperature information and the first material parameters, a second performance evaluation parameter is determined for the target reactor. The second performance evaluation parameter is used to evaluate the performance of the target reactor.
[0015] Optionally, the first material parameter includes the second temperature information of the target reactor, and the step of determining the second performance evaluation parameter of the target reactor based on the first temperature information and the first material parameter includes:
[0016] Based on the first temperature information and the second temperature information, determine whether the performance evaluation parameters of the target reactor have been extracted.
[0017] If so, the first performance evaluation parameter shall be used as the second performance evaluation parameter;
[0018] If not, the first material parameters are corrected based on the first temperature information to obtain the second material parameters; the second material parameters are set as the second simulation conditions of the electromagnetic simulation model; the electromagnetic simulation model is used to perform simulation based on the second simulation conditions and the excitation conditions to obtain the second performance evaluation parameters.
[0019] Optionally, determining whether the performance evaluation parameters of the target reactor have been extracted based on the first temperature information and the second temperature information includes:
[0020] Calculate the difference between the first temperature information and the second temperature information;
[0021] The difference is used to determine whether the performance evaluation parameters of the target reactor have been extracted.
[0022] Optionally, the semi-physical circuit simulation model includes:
[0023] Simulation software is used to build a target simulation circuit and obtain the excitation signal of the target reactor, wherein the target simulation circuit includes the target reactor;
[0024] A physical control board used to output control signals;
[0025] The host computer is used to configure the physical control board.
[0026] The signal transmission box is used to transmit the control signal, the sampling signal of the target simulation circuit, and to run the target simulation circuit.
[0027] Optionally, the step of using the semi-physical circuit simulation model to perform simulation and obtain the excitation signal of the target reactor includes:
[0028] The host computer is used to configure the physical control board to generate the target control signal;
[0029] The target simulation circuit is controlled according to the target control signal;
[0030] Acquire the target sampling signal of the target simulation circuit;
[0031] The target sampling signal is input to the physical control board;
[0032] The target control signal is adjusted by the physical control board according to the target sampling signal so that the target sampling signal meets the actual working condition requirements;
[0033] The excitation signal of the target reactor is acquired to obtain the excitation signal of the target reactor.
[0034] Optionally, the signal transmission box includes: a control core and an electrical core;
[0035] The control core is used to provide a channel for the transmission of the physical control board with the target control signal and the target sampling signal;
[0036] The electrical core is used to run the target simulation circuit.
[0037] Optionally, the first material parameters may also include winding resistivity, magnetic permeability of the core material, and iron loss.
[0038] Secondly, embodiments of this application also provide a reactor performance evaluation apparatus, which includes a unit for performing the above-described method.
[0039] Thirdly, embodiments of this application also provide a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-described method.
[0040] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the above-described method.
[0041] This application provides a method, apparatus, device, and medium for evaluating the performance of a reactor. The method includes: constructing a semi-physical circuit simulation model, an electromagnetic simulation model, and a thermal simulation model based on a target reactor; performing simulation using the semi-physical circuit simulation model to obtain an excitation signal for the target reactor; setting the excitation signal as an excitation condition for the electromagnetic simulation model; setting a first material parameter of the target reactor as a first simulation condition for the electromagnetic simulation model; performing simulation using the electromagnetic simulation model based on the first simulation condition and the excitation condition to obtain a first performance evaluation parameter for the target reactor; mapping the first performance evaluation parameter to thermal loss to obtain thermal loss distribution data for the target reactor; inputting the thermal loss distribution data into the thermal simulation model and performing thermal simulation to obtain first temperature information for the target reactor; and determining a second performance evaluation parameter for the target reactor based on the first temperature information and the first material parameter, wherein the second performance evaluation parameter is used to evaluate the performance of the target reactor. Therefore, this application uses a semi-physical circuit simulation model to obtain the excitation signal of the target reactor; sets the first material parameter of the target reactor as the first simulation condition of the electromagnetic simulation model, and performs simulation based on the first simulation condition and excitation condition to obtain the first performance evaluation parameter of the target reactor. Then, the first performance evaluation parameter is mapped to heat loss to obtain the heat loss distribution data of the target reactor; the second performance evaluation parameter of the target reactor is determined based on the first temperature information and the first material parameter. The performance of the target reactor is evaluated using the second performance evaluation parameter. Thus, the excitation signal of the target reactor is obtained through semi-physical circuit simulation. Therefore, this excitation signal can truly reflect the actual operating conditions of the reactor, thereby improving the accuracy of the reactor performance evaluation results. Attached Figure Description
[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0044] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0045] Figure 1a One of the flowcharts for a reactor performance evaluation method provided in this application embodiment;
[0046] Figure 1b This is a schematic diagram of a reactor performance evaluation method provided in an embodiment of this application;
[0047] Figure 1c A circuit topology diagram of a bidirectional three-phase interleaved parallel DC-DC converter provided in this application embodiment;
[0048] Figure 2a A second schematic flowchart illustrating a reactor performance evaluation method provided in this application embodiment;
[0049] Figure 2b A schematic diagram illustrating the framework of a reactor performance evaluation method provided in this application embodiment;
[0050] Figure 3 A schematic diagram of a process for obtaining a reactor excitation signal is provided for an embodiment of this application;
[0051] Figure 4 A schematic block diagram of a reactor performance evaluation device provided in this application embodiment;
[0052] Figure 5 A computer device provided in an embodiment of this application. Detailed Implementation
[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0054] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.
[0055] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0056] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0057] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0058] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrases "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."
[0059] To address the technical problem of inaccurate reactor performance evaluation results in the prior art, this application provides a reactor performance evaluation device that can improve the accuracy of reactor performance evaluation results.
[0060] Please see Figure 1a and Figure 1b , Figure 1a This is one of the flowcharts illustrating a reactor performance evaluation method provided in an embodiment of this application. Figure 1b This is a schematic diagram of a reactor performance evaluation method provided in an embodiment of this application. In one embodiment, the method includes:
[0061] S1. Build a semi-physical circuit simulation model, an electromagnetic simulation model, and a thermal simulation model.
[0062] The semi-physical circuit simulation model includes a target reactor; the target reactor includes, but is not limited to, DC reactors and AC reactors.
[0063] In one embodiment, the semi-physical circuit simulation model includes:
[0064] Simulation software is used to build the target simulation circuit and obtain the excitation signal of the target reactor. The target simulation circuit includes the target reactor.
[0065] A physical control board used to output control signals;
[0066] The host computer is used to configure the physical control board;
[0067] The signal transmission box is used to transmit control signals, sampling signals of the target simulation circuit, and to run the target simulation circuit.
[0068] In one embodiment, the signal transmission box includes a control core and an electrical core; wherein the control core is used to provide a channel for the transmission of the physical control board with the target control signal and the target sampling signal; and the electrical core is used to run the target simulation circuit.
[0069] Specifically, a control chip exists on the physical control board. The control core captures the pulse width modulation (PWM) signal emitted by the control chip. Then, the control core processes the PWM signal and transmits the processed PWM signal to the electrical core.
[0070] This application embodiment uses a bidirectional three-phase interleaved parallel DC-DC converter as an example for the target simulation circuit. For details, please refer to... Figure 1c , Figure 1c This application provides a circuit topology diagram for a bidirectional three-phase interleaved parallel DC-DC converter. The control core inputs the received PWM signal to the target simulation circuit to enable the electrical core to control the switching transistors in the target simulation circuit. Under the action of the PWM signal, the target reactor generates current and voltage. The control core collects the current and voltage in the target simulation circuit to enable the electrical core to run the simulation circuit and obtain the excitation signal required by the target reactor. The excitation signal can be an excitation voltage or an excitation current.
[0071] This application uses finite element analysis software capable of performing electromagnetic and thermal analysis as a simulation tool to build electromagnetic and thermal simulation models.
[0072] The electromagnetic analysis simulation specifically begins by drawing a three-dimensional structural model of the target reactor. Next, the transient solution field, excitation conditions, electromagnetic properties of the target reactor material, mesh type, maximum mesh element size, simulation step size, total simulation duration, and field data saving time nodes are set. In this embodiment, a semi-physical circuit simulation model is used to obtain the excitation signal, which is then used as the excitation condition. The electromagnetic properties of the target reactor material include, but are not limited to, the curves relating magnetic field strength to magnetic induction intensity (HB curve), the curves relating magnetic induction intensity to core loss (BP curve), winding conductivity, and core conductivity. The mesh type can be tetrahedral, hexahedral, or conformal. The maximum mesh element size can be set according to the material geometry, such as 1 / 10 of the maximum size of the geometric model. The simulation step size and field data saving time nodes are set based on the excitation signal. For example, the simulation step size can be set to 1 / 50 to 1 / 100 of the excitation signal period, and the field data saving time nodes can be set to 1 / 20 to 1 / 50 of the excitation signal period. The total simulation duration should be set to at least 3 to 5 complete cycles of the excitation signal. For example, if the frequency of the excitation signal is 1 kHz, then the period of the excitation signal is 1 ms, and the total simulation duration can be set to 3 ms to 5 ms. Of course, the total simulation duration can also be set to other multiples of the excitation signal period. This application does not impose any restrictions on this.
[0073] The thermal analysis simulation specifically begins by drawing a three-dimensional structural model of the target reactor. This three-dimensional structural model is identical to the one used in the electromagnetic simulation model. Next, the steady-state solution field, material thermal properties of the target reactor, heat loss, mesh type, maximum mesh element size, ambient temperature, flow regime, radiation, number of iterations, and residual values are set. The material thermal properties of the target reactor include, but are not limited to, thermal conductivity, specific heat capacity, and surface emissivity. The ambient temperature can be the critical temperature for derating, such as 40°C. In this embodiment, the loss distribution obtained from the electromagnetic simulation is mapped to heat loss to obtain the heat loss required for the thermal simulation model.
[0074] S2. Simulate using a semi-physical circuit simulation model to obtain the excitation signal of the target reactor.
[0075] It should be noted that this application uses the semi-physical circuit simulation model built in the above embodiments to simulate and obtain the excitation signal of the target reactor.
[0076] It should be noted that the excitation signal of the target reactor differs from the excitation signal obtained under pure circuit simulation conditions. This is because the control signal of the semi-physical reactor is provided by the control board, while the control signal established by pure circuit simulation differs from the actual signal.
[0077] S3. Set the excitation signal as the excitation condition of the electromagnetic simulation model.
[0078] It should be noted that, in order to improve the accuracy of the reactor performance evaluation results, the excitation signal obtained from the semi-physical circuit simulation model in this embodiment is set as the excitation condition of the electromagnetic simulation model. Since this excitation signal can realistically reflect the actual operating conditions of the target reactor, the electromagnetic simulation results obtained through this excitation condition are more consistent with reality.
[0079] S4. Set the first material parameters of the target reactor as the first simulation condition of the electromagnetic simulation model.
[0080] The first material parameters include the winding resistivity, the permeability of the core material, the iron loss, and the second temperature information of the target reactor. The second temperature information will be described in detail in later embodiments of this application. It will not be repeated here.
[0081] In this embodiment of the application, the permeability and iron loss of the core material are obtained by consulting the specifications provided by the target reactor manufacturer. Here, iron loss refers to the core loss.
[0082] The formula for calculating winding resistivity is as follows:
[0083] ρ T =ρ1*[1+K 绕组 *(T-20)]
[0084] Where, ρ T ρt is the resistivity of the winding material at temperature T, ρ1 is the resistivity of the winding material at 20℃, and Kt is the resistivity of the winding material at 20℃. 绕组 This is the temperature coefficient.
[0085] It should be noted that K 绕组 The values are shown in Table 1. Table 1 shows the temperature coefficient values for different materials.
[0086] Material <![CDATA[ρ1(Ω·m)]]> <![CDATA[K 绕组 (℃-1)]]> silver <![CDATA[1.59×10 -8 ]]> <![CDATA[3.80×10 -3 ]]> copper <![CDATA[1.72×10 -8 ]]> <![CDATA[4.10×10 -3 ]]> aluminum <![CDATA[2.83×10 -8 ]]> <![CDATA[3.93×10 -3 ]]>
[0087] Table 1
[0088] S5. Based on the first simulation conditions and excitation conditions, use the electromagnetic simulation model to perform simulation and obtain the first performance evaluation parameters of the target reactor.
[0089] The first performance evaluation parameters include: the inductance of the target reactor, the magnetic flux density map of the target reactor, and the loss distribution of the target reactor. The loss distribution of the target reactor includes the winding loss and the core loss.
[0090] S6. Map the first performance evaluation parameters to thermal loss to obtain the thermal loss distribution data of the target reactor.
[0091] Specifically, in this embodiment of the application, the winding loss and core loss of the target reactor are mapped to the heat loss distribution data of the target reactor using thermal simulation software.
[0092] S7. Input the heat loss distribution data into the thermal simulation model and perform thermal simulation to obtain the first temperature information of the target reactor.
[0093] The first temperature information can be either the temperature distribution or the temperature value.
[0094] In one embodiment, when the first temperature information is a temperature distribution, specifically, heat loss distribution data is input into a thermal simulation model and thermal simulation is performed to obtain the temperature distribution of the target reactor. In the three-dimensional model of the target reactor, each corner point (also called a node) of a mesh cell corresponds to a temperature value. The temperature at any location within the cell is obtained by interpolating the node temperatures using a shape function. For example, in a hexahedral mesh cell, each of the eight nodes corresponds to a temperature value, and the temperature T at any point (x, y, z) within the cell is obtained by interpolating the shape function Ni with weighted node temperatures Ti.
[0095]
[0096] N i The value is 1 at node i and 0 at other nodes; in the linear hexahedral element, the temperature changes linearly within the element (gradient is constant).
[0097] The first temperature information is the three-dimensional temperature field obtained from thermal simulation, which is transmitted to the electromagnetic simulation model in mesh nodes as the basic unit. The temperature value of each mesh node participates in the material parameter update.
[0098] In the electromagnetic simulation model, temperature data is mapped to geometric topology: Each component (such as coil or magnetic core) in the electromagnetic simulation model receives the temperature field of the corresponding geometric region of the thermal simulation project. If the components are geometrically identical, the temperature field is accurately mapped according to the node coordinates; if there is an offset, the simulation platform automatically performs nearest neighbor interpolation.
[0099] In another embodiment, when the first temperature information is a single temperature value, this embodiment obtains the three-dimensional temperature field of the target reactor through thermal simulation, then extracts the maximum value from the three-dimensional temperature field and uses this maximum value as the first temperature information. Alternatively, this embodiment can extract the average temperature value of all grid nodes from the three-dimensional temperature field and use this average temperature value as the first temperature information.
[0100] S8. Determine the second performance evaluation parameters of the target reactor based on the first temperature information and the first material parameters.
[0101] The second performance evaluation parameters are used to evaluate the performance of the target reactor. These parameters include: the inductance of the target reactor, the magnetic flux density map of the target reactor, and the loss distribution of the target reactor.
[0102] It should be noted that, in this embodiment of the application, the magnetic density cloud diagram of the target reactor is examined to ensure that the magnetic core of the target reactor has not experienced magnetic saturation.
[0103] This application provides a method for evaluating the performance of a reactor. The method includes: constructing a semi-physical circuit simulation model, an electromagnetic simulation model, and a thermal simulation model based on a target reactor; performing simulation using the semi-physical circuit simulation model to obtain an excitation signal for the target reactor; setting the excitation signal as an excitation condition for the electromagnetic simulation model; setting a first material parameter of the target reactor as a first simulation condition for the electromagnetic simulation model; performing simulation using the electromagnetic simulation model based on the first simulation condition and the excitation condition to obtain a first performance evaluation parameter for the target reactor; mapping the first performance evaluation parameter to thermal loss to obtain thermal loss distribution data for the target reactor; inputting the thermal loss distribution data into the thermal simulation model and performing thermal simulation to obtain first temperature information for the target reactor; and determining a second performance evaluation parameter for the target reactor based on the first temperature information and the first material parameter, wherein the second performance evaluation parameter is used to evaluate the performance of the target reactor. Therefore, this application uses a semi-physical circuit simulation model to obtain the excitation signal of the target reactor; sets the first material parameter of the target reactor as the first simulation condition of the electromagnetic simulation model, and performs simulation based on the first simulation condition and the excitation condition to obtain the first performance evaluation parameter of the target reactor. Then, the first performance evaluation parameter is mapped to heat loss to obtain the heat loss distribution data of the target reactor; the second performance evaluation parameter of the target reactor is determined based on the first temperature information and the first material parameter. The performance of the target reactor is evaluated using the second performance evaluation parameter. Thus, the excitation signal of the target reactor is obtained through semi-physical circuit simulation. Therefore, this excitation signal can truly reflect the actual operating conditions of the target reactor, thereby improving the accuracy of the reactor performance evaluation results.
[0104] Please see Figure 2a , Figure 2a This is a second schematic flowchart illustrating a reactor performance evaluation method provided in an embodiment of this application. In one embodiment, the first material parameter includes the second temperature information of the target reactor. Determining the second performance evaluation parameter of the target reactor based on the first temperature information and the first material parameter includes:
[0105] S201. Determine whether the performance evaluation parameters of the target reactor have been extracted based on the first temperature information and the second temperature information; if yes, proceed to S202; otherwise, proceed to S203-S205.
[0106] In one embodiment, determining whether the performance evaluation parameters of the target reactor have been extracted based on the first temperature information and the second temperature information includes:
[0107] S2011. Calculate the difference between the first temperature information and the second temperature information.
[0108] The second temperature information can be either temperature distribution or temperature value.
[0109] When both the first and second temperature information are temperature distributions, the temperature difference corresponding to the same grid nodes in the two temperature distributions is calculated to obtain multiple temperature difference values. For example, if the first temperature information includes temperature value a1 of grid node A and temperature value b1 of grid node B, and the second temperature information includes temperature value a2 of grid node A and temperature value b2 of grid node B, then the difference between the first and second temperature information is a1-a2 and b1-b2.
[0110] When the first temperature information and the second temperature information are temperature values, the difference between the first temperature information and the second temperature information is the difference between the two temperature values. For example, if the first temperature information is 80℃ and the second temperature information is 66℃, then the difference is 14℃.
[0111] S2012. Determine whether the performance evaluation parameters of the target reactor have been extracted based on the difference.
[0112] Specifically, the process involves determining whether the difference is within a preset range. If so, the extraction of performance evaluation parameters for the target reactor is complete. If not, the extraction of performance evaluation parameters for the target reactor is incomplete. The preset range is set by the applicant based on experience. It should be noted that the closer the first temperature information is to the second temperature information, the higher the accuracy of the extracted performance evaluation parameters for the target reactor. The preset range can be set to 0-1℃. Of course, the preset range can also be set to other numerical ranges. This application does not impose any restrictions on this.
[0113] S202, Use the first performance evaluation parameter as the second performance evaluation parameter.
[0114] When the difference is within the preset range, the performance evaluation parameters of the target reactor are extracted. At this point, the first performance evaluation parameter is used as the second performance evaluation parameter.
[0115] S203. Correct the first material parameters based on the first temperature information to obtain the second material parameters;
[0116] If the difference is outside the preset range, the extraction of performance evaluation parameters for the target reactor is incomplete. In this case, the first material parameters need to be corrected based on the first temperature information, and the simulation needs to be repeated. Specifically, the winding resistivity, core material permeability, and iron loss of the target reactor are modified based on the first temperature information to obtain new winding resistivity, core material permeability, and iron loss for the target reactor. The second material parameters are the same as the first material parameters. This will not be elaborated upon further in this application.
[0117] S204. Set the second material parameter as the second simulation condition of the electromagnetic simulation model;
[0118] It should be noted that S204 is the same as or similar to S6. This application will not elaborate further on this point.
[0119] S205. Based on the second simulation conditions and excitation conditions, use the electromagnetic simulation model to perform simulation and obtain the second performance evaluation parameters.
[0120] It should be noted that S205 is the same as or similar to S7, and the second performance evaluation parameter is the same as the first performance evaluation parameter. This application will not elaborate further on this.
[0121] It should be noted that S203-S205 can be executed once or multiple times. When it is determined that the performance evaluation parameters of the target reactor have not been fully extracted, this embodiment of the application repeats S203-S205 to ensure that the performance evaluation parameters of the target reactor are fully extracted. At this time, the performance evaluation parameters obtained from the electromagnetic simulation model are the second performance evaluation parameters.
[0122] Please see Figure 2b , Figure 2b This is a schematic diagram illustrating the framework of a reactor performance evaluation method provided in this application embodiment. A semi-physical circuit simulation provides current data for the target reactor and uses this current data as the excitation condition in the electromagnetic simulation. After the electromagnetic simulation, the inductance, magnetic flux density map, and loss distribution of the target reactor are generated. The loss distribution is then thermally mapped to generate the thermal loss data required for thermal simulation. The thermal simulation model performs thermal simulation based on the thermal loss data to obtain the temperature information of the target reactor. The thermal simulation model then feeds the temperature information back to the electromagnetic simulation model and performs the electromagnetic simulation again. When the difference between the temperature information of the target reactor generated by the thermal simulation and the temperature information of the target reactor in the electromagnetic simulation is within a preset range, the electromagnetic and thermal simulations end. At this point, the inductance, magnetic flux density map, and loss distribution of the target reactor generated by the final electromagnetic simulation by the electromagnetic simulation model are used to evaluate the performance of the target reactor.
[0123] Please see Figure 3 , Figure 3This is a schematic flowchart illustrating a process for obtaining an excitation signal for a reactor, provided as an embodiment of this application. In one embodiment, the step of using the semi-physical circuit simulation model to perform simulation and obtain the excitation signal for the target reactor includes:
[0124] 301. Set up the physical control board via the host computer to generate the target control signal.
[0125] In this embodiment, the physical control board is controlled by debugging software on a host computer. Specifically, the host computer sets the communication parameters or operating mode of the physical control board. For example, the serial communication baud rate of the physical control board is set to 115200bps. The physical control board generates a target control signal based on the settings of the host computer. This target control signal is a PWM signal.
[0126] 302. Control the target simulation circuit according to the target control signal.
[0127] Please see Figure 1b The signal transmission box acquires the PWM signal from the physical control board. It should be noted that the sampling step size of the signal transmission box should be minimized as much as possible to ensure that the PWM signal acquired by the signal transmission box is consistent with the PWM signal emitted by the physical control board, thereby ensuring high accuracy of the excitation signal of the target reactor.
[0128] The signal transmission box inputs the PWM signal to the target simulation circuit to control the switching transistors in the target simulation circuit.
[0129] 303. Acquire the target sampling signal of the target simulation circuit.
[0130] The target sampling signals include current signals and voltage signals.
[0131] 304. Input the target sampling signal to the physical control board.
[0132] The signal transmission box inputs the collected current and voltage signals to the physical control board.
[0133] 305. Adjust the target control signal through the physical control board according to the target sampling signal so that the target sampling signal meets the actual working conditions.
[0134] The physical control board adjusts the duty cycle of the target control signal based on the current and voltage signals, so that the target simulation circuit outputs the required excitation signal.
[0135] 306. Collect the excitation signal of the target reactor by ensuring that the output voltage and current of the target simulation circuit meet the requirements of the actual working conditions.
[0136] It should be noted that S303-S305 can be executed once or multiple times. When the target control signal cannot make the target reactor output a stable excitation signal, the physical control board needs to modulate the duty cycle of the target control signal according to the target sampling signal to obtain a new target control signal. The new target control signal then controls the target simulation circuit so that the excitation signal collected by the signal transmission box is a stable excitation signal.
[0137] See Figure 4 , Figure 4 This is a schematic block diagram of a reactor performance evaluation device provided in an embodiment of this application. Corresponding to the above-described reactor performance evaluation method, this application also provides a reactor performance evaluation device. This reactor performance evaluation device includes a unit for performing the above-described reactor performance evaluation method, and can be configured in a terminal such as a desktop computer, tablet computer, or laptop computer. Specifically, the reactor performance evaluation device includes:
[0138] Unit 401 is used to build a semi-physical circuit simulation model, an electromagnetic simulation model, and a thermal simulation model based on the target reactor.
[0139] The first simulation unit 402 is used to perform simulation using the semi-physical circuit simulation model to obtain the excitation signal of the target reactor.
[0140] The first setting unit 403 is used to set the excitation signal as the excitation condition of the electromagnetic simulation model;
[0141] The second setting unit 404 is used to set the first material parameter of the target reactor as the first simulation condition of the electromagnetic simulation model.
[0142] The second simulation unit 405 is used to perform simulation using the electromagnetic simulation model according to the first simulation conditions and the excitation conditions to obtain the first performance evaluation parameters of the target reactor.
[0143] The mapping unit 406 is used to perform heat loss mapping on the first performance evaluation parameters to obtain the heat loss distribution data of the target reactor.
[0144] The third simulation unit 407 is used to input the heat loss distribution data into the thermal simulation model and perform thermal simulation to obtain the first temperature information of the target reactor.
[0145] The determining unit 408 is used to determine a second performance evaluation parameter of the target reactor based on the first temperature information and the first material parameters. The second performance evaluation parameter is used to evaluate the performance of the target reactor.
[0146] In one embodiment, the first material parameter includes the second temperature information of the target reactor, and the determining unit 408 is specifically used to determine whether the performance evaluation parameters of the target reactor have been extracted based on the first temperature information and the second temperature information;
[0147] If so, the first performance evaluation parameter shall be used as the second performance evaluation parameter.
[0148] If not, the first material parameters are corrected based on the first temperature information to obtain the second material parameters; the second material parameters are set as the second simulation conditions of the electromagnetic simulation model; the electromagnetic simulation model is used to perform simulation based on the second simulation conditions and the excitation conditions to obtain the second performance evaluation parameters.
[0149] In one embodiment, the determining unit 408 is further configured to calculate the difference between the first temperature information and the second temperature information;
[0150] The difference is used to determine whether the performance evaluation parameters of the target reactor have been extracted.
[0151] In one embodiment, the semi-physical circuit simulation model includes:
[0152] Simulation software is used to build a target simulation circuit and obtain the excitation signal of the target reactor, wherein the target simulation circuit includes the target reactor;
[0153] A physical control board used to output control signals;
[0154] The host computer is used to configure the physical control board.
[0155] The signal transmission box is used to transmit the control signal, the sampling signal of the target simulation circuit, and to run the target simulation circuit.
[0156] In one embodiment, the first simulation unit 402 is specifically used to set the physical control board through the host computer to generate a target control signal;
[0157] The target simulation circuit is controlled according to the target control signal;
[0158] Acquire the target sampling signal of the target simulation circuit;
[0159] The target sampling signal is input to the physical control board;
[0160] The target control signal is adjusted by the physical control board according to the target sampling signal so that the target sampling signal meets the actual working condition requirements;
[0161] The excitation signal of the target reactor is acquired to obtain the excitation signal of the target reactor.
[0162] In one embodiment, the signal transmission box includes: a control core and an electrical core;
[0163] The control core is used to provide a channel for the transmission of the physical control board with the target control signal and the target sampling signal;
[0164] The electrical core is used to run the target simulation circuit.
[0165] In one embodiment, the first material parameters include winding resistivity, magnetic permeability of the core material, and iron loss.
[0166] like Figure 5 As shown, this application provides a computer device including a processor 51, a communication interface 52, a memory 53, and a communication bus 54. The processor 51, the communication interface 52, and the memory 53 communicate with each other through the communication bus 54. The memory 53 is used to store computer programs.
[0167] In one embodiment of this application, when the processor 51 executes the program stored in the memory 53, it implements the control method for evaluating reactor performance provided in any of the foregoing method embodiments.
[0168] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program may be stored in a storage medium, which is a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.
[0169] Therefore, embodiments of this application also provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the reactor performance evaluation method provided in any of the foregoing method embodiments.
[0170] The storage medium is a physical, non-transient storage medium, such as a USB flash drive, external hard drive, read-only memory (ROM), magnetic disk, or optical disk, or any other physical storage medium capable of storing program code. The computer-readable storage medium can be non-volatile or volatile.
[0171] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.
[0172] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For example, the division of each unit is merely a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.
[0173] The steps in the methods of this application embodiment can be adjusted, merged, or deleted according to actual needs. The units in the apparatus of this application embodiment can be merged, divided, or deleted according to actual needs. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
[0174] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of this application, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a terminal, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.
[0175] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0176] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.
[0177] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A method for evaluating the performance of a reactor, characterized in that, include: Based on the target reactor, build a semi-physical circuit simulation model, an electromagnetic simulation model, and a thermal simulation model; The excitation signal of the target reactor is obtained by performing simulation using the aforementioned hardware-in-the-loop simulation model. The excitation signal is set as the excitation condition of the electromagnetic simulation model; Set the first material parameter of the target reactor as the first simulation condition of the electromagnetic simulation model; Based on the first simulation conditions and the excitation conditions, the electromagnetic simulation model is used to perform simulation to obtain the first performance evaluation parameters of the target reactor. The heat loss distribution data of the target reactor is obtained by mapping the first performance evaluation parameters to heat loss. The heat loss distribution data is input into the thermal simulation model and thermal simulation is performed to obtain the first temperature information of the target reactor. Based on the first temperature information and the first material parameters, a second performance evaluation parameter is determined for the target reactor. The second performance evaluation parameter is used to evaluate the performance of the target reactor.
2. The method according to claim 1, characterized in that, The first material parameter includes the second temperature information of the target reactor. Determining the second performance evaluation parameter of the target reactor based on the first temperature information and the first material parameter includes: Based on the first temperature information and the second temperature information, determine whether the performance evaluation parameters of the target reactor have been extracted. If so, the first performance evaluation parameter shall be used as the second performance evaluation parameter; If not, the first material parameters are corrected based on the first temperature information to obtain the second material parameters; the second material parameters are set as the second simulation conditions of the electromagnetic simulation model; the electromagnetic simulation model is used to perform simulation based on the second simulation conditions and the excitation conditions to obtain the second performance evaluation parameters.
3. The method according to claim 2, characterized in that, The step of determining whether the performance evaluation parameters of the target reactor have been extracted based on the first temperature information and the second temperature information includes: Calculate the difference between the first temperature information and the second temperature information; The difference is used to determine whether the performance evaluation parameters of the target reactor have been extracted.
4. The method according to any one of claims 1 to 3, characterized in that, The semi-physical circuit simulation model includes: Simulation software is used to build a target simulation circuit and obtain the excitation signal of the target reactor, wherein the target simulation circuit includes the target reactor; A physical control board used to output control signals; The host computer is used to configure the physical control board. The signal transmission box is used to transmit the control signal, the sampling signal of the target simulation circuit, and to run the target simulation circuit.
5. The method according to claim 4, characterized in that, The process of using the semi-physical circuit simulation model to perform simulation and obtain the excitation signal for the target reactor includes: The host computer is used to configure the physical control board to generate the target control signal; The target simulation circuit is controlled according to the target control signal; Acquire the target sampling signal of the target simulation circuit; The target sampling signal is input to the physical control board; The target control signal is adjusted by the physical control board according to the target sampling signal so that the target sampling signal meets the actual working condition requirements; The excitation signal of the target reactor is acquired to obtain the excitation signal.
6. The method according to claim 4, characterized in that, The signal transmission box includes: a control core and an electrical core; The control core is used to provide a channel for the transmission of the physical control board with the target control signal and the target sampling signal; The electrical core is used to run the target simulation circuit.
7. The method according to any one of claims 1 to 3, characterized in that, The first material parameters also include winding resistivity, magnetic permeability of core material, and iron loss.
8. A reactor performance evaluation device, characterized in that, include: The building unit is used to build a semi-physical circuit simulation model, an electromagnetic simulation model, and a thermal simulation model based on the target reactor. The first simulation unit is used to perform simulation using the semi-physical circuit simulation model to obtain the excitation signal of the target reactor. The first setting unit is used to set the excitation signal as the excitation condition of the electromagnetic simulation model; The second setting unit is used to set the first material parameter of the target reactor as the first simulation condition of the electromagnetic simulation model. The second simulation unit is used to perform simulation using the electromagnetic simulation model according to the first simulation conditions and the excitation conditions to obtain the first performance evaluation parameters of the target reactor. The mapping unit is used to map the first performance evaluation parameters to thermal loss to obtain the thermal loss distribution data of the target reactor. The third simulation unit is used to input the heat loss distribution data into the thermal simulation model and perform thermal simulation to obtain the first temperature information of the target reactor. The determining unit is configured to determine a second performance evaluation parameter of the target reactor based on the first temperature information and the first material parameters, wherein the second performance evaluation parameter is used to evaluate the performance of the target reactor.
9. A computer device, characterized in that, The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method as described in any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that, when executed by a processor, can implement the method as described in any one of claims 1 to 7.