CN116306404A - Method, device, equipment and storage medium for testing magnetic core inductance element - Google Patents
Method, device, equipment and storage medium for testing magnetic core inductance element Download PDFInfo
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Abstract
The embodiment of the application provides a method, a device, equipment and a storage medium for testing a magnetic core inductance element, wherein the method comprises the following steps: establishing a three-dimensional simulation model of a magnetic core inductance element of the electrical equipment; generating boundary conditions of the three-dimensional simulation model; and performing simulation test on the magnetic core inductance element according to the boundary condition and the three-dimensional simulation model. By implementing the embodiment, the simulation test precision can be improved. And the simulation test precision is improved.
Description
Technical Field
The application relates to the technical field of motors, in particular to a method, a device, equipment and a storage medium for testing magnetic core inductance elements.
Background
Switching power conversion networks are currently an integral part of electrical systems. The circuit topology of the switching power supply conversion network in different forms is generally composed of magnetic core inductance elements, electronic switching tubes, rectifier diodes, capacitance elements and other electronic elements. Because the switching power supply switching network needs to bear voltage and current with higher amplitude and rapid change, serious electromagnetic interference and severe temperature rise are easy to generate. The magnetic core inductance element is one of the power conversion elements with the largest pressure bearing in the switching power supply conversion network, parasitic capacitance of the magnetic core inductance element can cause electromagnetic interference leakage, copper loss and iron loss of a wire winding can cause temperature rise of the element, and improper design can have risks of electromagnetic or thermal failure.
The electromagnetic characteristics of the magnetic core inductance element are closely related to the physical characteristics of inductance, capacitance, resistance and the like, and in practical application, the magnetic core inductance element is generally replaced by an equivalent circuit calculated by an empirical formula, and the influence of the magnetic core inductance element on the circuit is evaluated. However, the RLC parameters obtained by the method have poor accuracy, and cannot cover a wider frequency range, so that the electromagnetic interference simulation accuracy is greatly reduced.
At present, thermal analysis of an inductance component is often estimated by a numerical calculation method, and the current is considered to be uniformly distributed in the cross section of a wire, so that the method has small loss of the inductance component and small error in thermal analysis under the conditions of simple structure and small current change rate, and has low accuracy of temperature rise estimation of the inductance of a magnetic core for a high-frequency circuit consisting of the inductance and the elements with complex structures. The working environment of the inductor is that in alternating current and alternating magnetic field, the current is in the wire, the current in the conductor is unevenly distributed due to skin effect and is concentrated on the surface of the wire, so that the equivalent sectional area of the wire is reduced, and the equivalent resistance of the wire is improved along with the frequency. The nonlinear alternating magnetic field has low estimation accuracy by a numerical calculation method without considering skin effect.
Disclosure of Invention
The embodiment of the application aims to provide a method, a device, equipment and a storage medium for testing magnetic core inductance elements, which can accurately test the magnetic core inductance elements of a motor, so as to obtain accurate simulation test results.
The embodiment of the application provides a test method of a magnetic core inductance element, which comprises the following steps:
establishing a three-dimensional simulation model of a magnetic core inductance element of the electrical equipment;
generating boundary conditions of the three-dimensional simulation model;
and performing simulation test on the magnetic core inductance element according to the boundary condition and the three-dimensional simulation model.
In the implementation process, the magnetic core inductance three-dimensional simulation model is accurately built, different boundary conditions are set, the working state of the magnetic core inductance element in actual work can be simulated, and the electromagnetic interference characteristic simulation accuracy of the circuit can be improved.
Further, the boundary condition includes: boundary conditions corresponding to electromagnetic characteristics;
the step of performing a simulation test on the magnetic core inductance element according to the boundary condition and the three-dimensional simulation model comprises the following steps:
generating an equivalent circuit of the three-dimensional simulation model;
generating a simulation circuit of the electrical device;
replacing the magnetic core inductance element in the simulation circuit with the equivalent circuit to obtain an electromagnetic characteristic simulation model;
and testing the magnetic core inductance element according to boundary conditions corresponding to the electromagnetic characteristics and the electromagnetic characteristic simulation model.
In the implementation process, unlike the method for directly solving the RLC equivalent circuit in the prior art, the embodiment of the application obtains the equivalent circuit of the three-dimensional simulation model on the basis of the three-dimensional simulation model, so that the equivalent circuit can more represent the actual magnetic core inductance element, and the simulation test result is more accurate.
Further, the boundary condition includes: boundary conditions corresponding to thermal simulation; the step of performing a simulation test on the magnetic core inductance element according to the three-dimensional simulation model comprises the following steps:
generating a simulation circuit of the electrical device;
calculating an input current of the magnetic core inductance element in the simulation circuit;
determining a metal loss coefficient of the three-dimensional simulation model;
and inputting the input current into the three-dimensional simulation model, and obtaining an output test result of the three-dimensional simulation model according to the metal loss coefficient and the boundary condition corresponding to the thermal simulation.
In the implementation process, firstly, a simulation circuit of the electrical equipment is generated, the input current input into the magnetic core inductance element by the electrical equipment can be calculated based on the simulation circuit of the electrical equipment, the metal loss coefficient of the three-dimensional simulation model is determined, and the output test result of the three-dimensional simulation model can be obtained based on the metal loss coefficient of the three-dimensional simulation model.
Further, boundary conditions corresponding to electromagnetic properties of the three-dimensional simulation model are generated by:
and defining an excitation source, a response end, simulation frequency and convergence characteristics of the three-dimensional simulation model, wherein the excitation source and the response end are arranged at two end points of the same winding.
In the implementation process, a method for setting the boundary condition of the magnetic core inductance element is provided, and the setting of the boundary condition is realized by defining the corresponding excitation source, response end, simulation frequency and convergence characteristic.
Further, the step of testing the magnetic core inductance element according to the boundary condition and the electromagnetic characteristic simulation model includes:
performing simulation on the electrical equipment according to the electromagnetic characteristic simulation model to obtain a simulation result;
analyzing the simulation result to obtain electromagnetic interference characteristics of the electrical equipment;
and judging whether the electromagnetic interference characteristics meet preset requirements, and if not, adjusting parameters of magnetic core inductance elements of the electrical equipment.
In the implementation process, the simulation result can be obtained by performing simulation on the constructed model, the simulation result is analyzed to obtain the electromagnetic interference characteristic of the electrical equipment, and if the electromagnetic interference characteristic does not meet the preset requirement, the parameters of the magnetic core inductance element of the electrical equipment are adjusted to optimize the magnetic core inductance element.
Further, after the step of inputting the input current into the three-dimensional simulation model to obtain the output test result of the three-dimensional simulation model according to the metal loss coefficient, the method includes:
acquiring the inductance temperature rise of the magnetic core inductance element under the input current according to the test result;
judging whether the electrical equipment is preset to meet the thermal management requirement according to the inductance temperature rise;
and if not, adjusting parameters of the magnetic core inductance element of the electric equipment.
In the implementation process, through carrying out simulation on the constructed model, the inductance temperature rise of the new power supply element can be obtained, and if the inductance temperature rise does not meet the preset requirement, the parameters of the inductance element of the magnetic core of the electrical equipment are adjusted, so that the optimization of the inductance element of the magnetic core is realized.
Further, the step of adjusting parameters of a magnetic core inductance element of the electrical device includes:
adjusting the structure and/or material parameters of a magnetic core inductance element of the electrical equipment to obtain an adjusted magnetic core inductance element;
and retesting the adjusted magnetic core inductance element.
In the implementation process, the performance of the magnetic core inductance element can be changed by adjusting the structure and/or material parameters of the magnetic core inductance element, and the magnetic core inductance element after adjustment is retested, so that the optimal magnetic core inductance element design scheme can be obtained.
In a second aspect, embodiments of the present application provide a magnetic core inductance element testing device, including:
the model building module is used for building a three-dimensional simulation model of the magnetic core inductance element of the electrical equipment;
the boundary generation module is used for generating boundary conditions of the three-dimensional simulation model;
and the test module is used for carrying out simulation test on the magnetic core inductance element according to the boundary condition and the three-dimensional simulation model.
In a third aspect, an electronic device provided in an embodiment of the present application includes: a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any one of the first aspects when the computer program is executed.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having instructions stored thereon, which when executed on a computer, cause the computer to perform the method according to any of the first aspects.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the techniques disclosed herein.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a testing method of a magnetic core inductance element according to an embodiment of the present application;
fig. 2 (a) is a schematic structural diagram of a double-wire parallel wound single-winding magnetic core inductor according to an embodiment of the present application;
fig. 2 (b) is a schematic structural diagram of a dual-winding magnetic core inductor with the same winding number and wound in parallel for double wires according to an embodiment of the present application;
fig. 2 (c) is a schematic structural diagram of a dual-winding magnetic core inductor with turns ratio and wound in parallel by two wires according to an embodiment of the present application;
fig. 2 (d) is a schematic structural diagram of a transformer with turns ratio on a printed circuit board according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a three-dimensional simulation model according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a testing device for a magnetic core inductance element according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, an embodiment of the present application provides a method for testing a magnetic core inductance element, including:
s101: establishing a three-dimensional simulation model of a magnetic core inductance element of the electrical equipment;
the three-dimensional simulation model of the magnetic core inductance established by using CAD software generally comprises a magnetic core structure, winding turns, a wire winding direction, a wire winding wire diameter, a bracket structure and the like. The modeling is performed by referring to the structural size of the magnetic core inductance real object in a three-dimensional coordinate system, wherein the magnetic core and the support can be modeled by referring to the standard structural size, the conducting wire is modeled according to the wire diameter, the number of turns and the winding direction, and the condition of mutual interference among the three-dimensional simulation models does not exist. As shown in fig. 2, the common core inductance type is that of a single winding core inductance wound in parallel by two lines, fig. 2 (a) is that of a double winding core inductance wound in parallel by two lines and having the same winding number, fig. 2 (c) is that of a double winding core inductance wound in parallel by two lines and having the same winding number ratio, and fig. 2 (d) is that of a transformer on a printed circuit board and having the same winding number ratio, and the core inductance elements of the above forms are common electronic elements applied to an electrical system, and can restore the actual structure thereof as much as possible by three-dimensional modeling.
S102: generating boundary conditions of the three-dimensional simulation model;
first, defining boundary conditions of the three-dimensional simulation model, wherein the boundary conditions comprise: boundary conditions corresponding to electromagnetic characteristics and boundary conditions corresponding to thermal characteristics simulation.
Wherein the step of generating boundary conditions for electromagnetic simulation comprises: the three-dimensional simulation model comprises an excitation source, a response end, simulation frequency and convergence characteristics, wherein the excitation source and the response end are arranged at two end points of the same winding. For common mode rejection inductances with more than 1 group of windings, the positions of each excitation source and response end are consistent with the actual design scheme; the simulation frequency comprises direct current and alternating current, and for alternating current signals, the frequency step and the frequency range can be set according to the requirement; the convergence requirement comprises convergence times and convergence range, and the convergence requirement is set according to the requirement by combining simulation efficiency and accuracy.
The boundary conditions further comprise boundary conditions corresponding to thermal simulation; boundary conditions for thermal simulation include: ambient temperature, initial material temperature, air flow rate.
S103: performing simulation test on the magnetic core inductance element according to the boundary condition and the three-dimensional simulation model;
the simulation test includes a simulation test of electromagnetic characteristics and a simulation test of thermal characteristics. The three-dimensional simulation model of the electromagnetic characteristic boundary condition is set based on the steps, so that simulation test of the magnetic core inductance element can be realized.
Specifically, S103 includes: generating an equivalent circuit of the three-dimensional simulation model; generating a simulation circuit of the electrical device; replacing a magnetic core inductance element in the simulation circuit with the equivalent circuit to obtain an electromagnetic characteristic simulation model; and testing the magnetic core inductance element according to boundary conditions corresponding to the electromagnetic characteristics and the electromagnetic characteristic simulation model.
The simulation circuit of the DCDC circuit of the electrical system corresponding to the electrical equipment is obtained first, and the equivalent circuit is added into the simulation circuit to obtain an electromagnetic characteristic simulation model.
In the implementation process, unlike the method for directly solving the RLC equivalent circuit in the prior art, the embodiment of the application obtains the equivalent circuit of the three-dimensional simulation model on the basis of the three-dimensional simulation model, so that the equivalent circuit can more represent the actual magnetic core inductance element, and the simulation test result is more accurate.
In one possible embodiment, the step of testing the core inductance element according to the boundary condition, the electromagnetic characteristic simulation model, includes: acquiring the inductance temperature rise of the magnetic core inductance element under the input current according to the test result; judging whether the electrical equipment is preset to meet the thermal management requirement according to the temperature rise of the inductor; if not, the parameters of the magnetic core inductance element of the electric equipment are adjusted.
Specifically, voltage source waveforms, filter capacitor sizes, load resistance sizes, PWM control waveforms of the electronic switching tubes and the like in the equivalent simulation model are set, and boundary conditions of electromagnetic simulation are defined. The voltage frequency domain waveform on the load resistor can be calculated by referring to the electromagnetic interference related standard, so as to obtain the electromagnetic interference characteristic of the initial design scheme of the electrical system. Waveform change on the load resistor is analyzed by adjusting relevant parameters of the magnetic core inductance element, and the improvement effect of each rectification scheme is compared, so that the optimal electromagnetic design scheme is selected.
Based on the simulation boundary conditions of the thermal characteristics generated in step S102, a thermal characteristic test of the magnetic core element may be implemented, where the test process includes: generating a simulation circuit of the electrical device; calculating the input current of a magnetic core inductance element in the simulation circuit; determining a metal loss coefficient of the three-dimensional simulation model; and inputting the input current into a three-dimensional simulation model, and obtaining an output test result of the three-dimensional simulation model according to the metal loss coefficient and the boundary condition corresponding to the thermal simulation.
In the above embodiment, the metal loss coefficient includes: iron loss coefficient and copper loss coefficient. The core loss factor may be set according to the material from which the actual core inductive element is made.
Specifically, the inductance element of the magnetic core is equivalent to an integral element in the simulation circuit of the electrical equipment, the input current of the magnetic core can be calculated based on the simulation circuit of the electrical equipment, and the current is input into the three-dimensional simulation model of fig. 3. Since the inductor is spirally wound on the iron core, the inductor coil itself has a direct current resistance, and the parameter is generally found in an inductance specification given by a manufacturer and can be used for defining a material parameter of a three-dimensional simulation model and is calculated by a finite element model (the model is a geometric model in simulation calculation and then is brought into the finite element model to carry out simulation calculation). The longer the total wire length of the coil, the greater the resistance, and the thinner the coil, the greater the resistance. The alternating current generates an alternating magnetic field in the coil core, which brings about eddy current losses and hysteresis losses, which are finally released in the form of heat. The losses are also different under different thermal simulation boundary conditions.
In the implementation process, the boundary conditions of the magnetic core inductance element in the three-dimensional simulation model are set, so that the performance parameters of the three-dimensional simulation model and the actual magnetic core inductance element are more approximate, and the simulation test precision is improved.
In one possible implementation manner, after the step of inputting the input current into the three-dimensional simulation model to obtain the output test result of the three-dimensional simulation model according to the boundary condition and the metal loss coefficient corresponding to the thermal simulation, the method includes: acquiring the inductance temperature rise of the magnetic core inductance element under the input current according to the test result; judging whether the electrical equipment is preset to meet the thermal management requirement according to the temperature rise of the inductor;
if not, the parameters of the magnetic core inductance element of the electric equipment are adjusted.
In a possible embodiment, the step of adjusting parameters of the core inductance element of the electrical device comprises: adjusting the structure and/or material parameters of a magnetic core inductance element of the electrical equipment to obtain an adjusted magnetic core inductance element; the adjusted core inductance element is retested.
The method provided by the embodiment of the application is also suitable for magnetic core inductance elements with two or more groups of windings. Magnetic core inductive elements with two or more windings are commonly used as common mode filter inductors or transformers in electrical systems. For the common mode filter inductance, it is one of main elements for improving common mode electromagnetic interference of an electrical system, according to its structure, to enable electromagnetic interference in a common mode form to cancel each other without affecting a useful signal in a differential mode form. For transformers, it is often applied in e.g. flyback switching power supply switching networks with feedback regulation or in e.g. LLC resonant switching power supply switching networks with voltage transformation regulation, usually the main heating element in the network. The evaluation methods proposed in the embodiments of the present application are equally applicable to both types of core inductance elements.
Example 2
Referring to fig. 4, an embodiment of the present application provides a magnetic core inductance element testing device, including:
the model building module 1 is used for building a three-dimensional simulation model of a magnetic core inductance element of the electrical equipment;
the boundary generation module 2 is used for generating boundary conditions of the three-dimensional simulation model;
and the test module 3 is used for carrying out simulation test on the magnetic core inductance element according to boundary conditions and the three-dimensional simulation model.
In one possible embodiment, the boundary conditions include: boundary conditions corresponding to electromagnetic characteristics; the test module 3 is also used for generating an equivalent circuit of the three-dimensional simulation model; generating a simulation circuit of the electrical device; replacing a magnetic core inductance element in the simulation circuit with the equivalent circuit to obtain an electromagnetic characteristic simulation model; and testing the magnetic core inductance element according to boundary conditions and an electromagnetic characteristic simulation model.
In one possible embodiment, the conditions include: boundary conditions corresponding to thermal simulation; the test module 3 is also used for generating a simulation circuit of the electrical equipment; calculating the input current of a magnetic core inductance element in the simulation circuit; determining a metal loss coefficient of the three-dimensional simulation model; and inputting the input current into the three-dimensional simulation model, and obtaining an output test result of the three-dimensional simulation model according to the metal loss coefficient.
In a possible embodiment, the boundary generation module 2 is further configured to define an excitation source, a response end, a simulation frequency and a convergence characteristic of the three-dimensional simulation model, where the excitation source and the response end are disposed at two end points of the same winding.
In a possible implementation manner, the test module 3 is further configured to perform simulation on the electrical device according to the electromagnetic characteristic simulation model, so as to obtain a simulation result; analyzing the simulation result to obtain electromagnetic interference characteristics of the electrical equipment; and judging whether the electromagnetic interference characteristics meet preset requirements, and if not, adjusting parameters of magnetic core inductance elements of the electrical equipment.
In a possible embodiment, the test module 4 is further configured to obtain an inductance temperature rise of the magnetic core inductance element under the input current according to the test result; judging whether the electrical equipment is preset to meet the thermal management requirement according to the temperature rise of the inductor; if not, the parameters of the magnetic core inductance element of the electric equipment are adjusted.
In a possible embodiment, the test module 3 is further configured to adjust a structural and/or material parameter of a magnetic core inductance element of the electrical device, resulting in an adjusted magnetic core inductance element; the adjusted core inductance element is retested.
In a possible embodiment, the test module 3 is further configured to adjust a structural and/or material parameter of a magnetic core inductance element of the electrical device, resulting in an adjusted magnetic core inductance element; the adjusted core inductance element is retested.
The application further provides an electronic device, please refer to fig. 5, and fig. 5 is a block diagram of an electronic device according to an embodiment of the application. The electronic device may include a processor 51, a communication interface 52, a memory 53, and at least one communication bus 54. Wherein the communication bus 54 is used to enable direct connection communication of these components. The communication interface 52 of the electronic device in the embodiment of the present application is used for performing signaling or data communication with other node devices. The processor 51 may be an integrated circuit chip with signal processing capabilities.
The processor 51 may be a general-purpose processor including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but may also be a Digital Signal Processor (DSP), application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. The general purpose processor may be a microprocessor or the processor 51 may be any conventional processor or the like.
The Memory 53 may be, but is not limited to, random access Memory (Random Access Memory, RAM), read Only Memory (ROM), programmable Read Only Memory (Programmable Read-Only Memory, PROM), erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc. The memory 53 has stored therein computer readable instructions which, when executed by the processor 51, can perform the steps involved in the above-described method embodiments.
Optionally, the electronic device may further include a storage controller, an input-output unit.
The memory 53, the memory controller, the processor 51, the peripheral interface, and the input/output unit are electrically connected directly or indirectly to each other, so as to realize data transmission or interaction. For example, the components may be electrically coupled to each other via one or more communication buses 54. The processor 51 is adapted to execute executable modules stored in the memory 53, such as software functional modules or computer programs comprised by the electronic device.
The input-output unit is used for providing the user with the creation task and creating the starting selectable period or the preset execution time for the task so as to realize the interaction between the user and the server. The input/output unit may be, but is not limited to, a mouse, a keyboard, and the like.
It will be appreciated that the configuration shown in fig. 5 is merely illustrative, and that the electronic device may also include more or fewer components than shown in fig. 5, or have a different configuration than shown in fig. 5. The components shown in fig. 5 may be implemented in hardware, software, or a combination thereof.
The embodiment of the application further provides a computer readable storage medium, on which instructions are stored, and when the instructions run on a computer, the computer program is executed by a processor to implement the method of the method embodiment, so that repetition is avoided, and no further description is given here.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners as well. The apparatus embodiments described above are merely illustrative, for example, flow diagrams and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored on a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above is only an example of the present application, and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Claims (10)
1. A method for testing an inductive component of a magnetic core, comprising:
establishing a three-dimensional simulation model of a magnetic core inductance element of the electrical equipment;
generating boundary conditions of the three-dimensional simulation model;
and performing simulation test on the magnetic core inductance element according to the boundary condition and the three-dimensional simulation model.
2. The method of testing a magnetic core inductive component according to claim 1, wherein the boundary conditions comprise: boundary conditions corresponding to electromagnetic characteristics;
the step of performing a simulation test on the magnetic core inductance element according to the boundary condition and the three-dimensional simulation model comprises the following steps:
generating an equivalent circuit of the three-dimensional simulation model;
generating a simulation circuit of the electrical device;
replacing the magnetic core inductance element in the simulation circuit with the equivalent circuit to obtain an electromagnetic characteristic simulation model;
and testing the magnetic core inductance element according to boundary conditions corresponding to the electromagnetic characteristics and the electromagnetic characteristic simulation model.
3. The method of testing a magnetic core inductive component according to claim 1, wherein the boundary conditions comprise: boundary conditions corresponding to thermal simulation;
the step of performing a simulation test on the magnetic core inductance element according to the three-dimensional simulation model comprises the following steps:
generating a simulation circuit of the electrical device;
calculating an input current of the magnetic core inductance element in the simulation circuit;
determining a metal loss coefficient of the three-dimensional simulation model;
and inputting the input current into the three-dimensional simulation model, and obtaining an output test result of the three-dimensional simulation model according to the metal loss coefficient and the boundary condition corresponding to the thermal simulation.
4. The method of testing a magnetic core inductance element according to claim 2, wherein the boundary condition corresponding to the electromagnetic characteristic of the three-dimensional simulation model is generated by:
and defining an excitation source, a response end, simulation frequency and convergence characteristics of the three-dimensional simulation model, wherein the excitation source and the response end are arranged at two end points of the same winding.
5. The method of testing a magnetic core inductance element according to claim 2, wherein the step of testing the magnetic core inductance element according to the boundary condition, the electromagnetic characteristic simulation model, comprises:
performing simulation on the electrical equipment according to the electromagnetic characteristic simulation model to obtain a simulation result;
analyzing the simulation result to obtain electromagnetic interference characteristics of the electrical equipment;
and judging whether the electromagnetic interference characteristics meet preset requirements, and if not, adjusting parameters of magnetic core inductance elements of the electrical equipment.
6. The method for testing a magnetic core inductance element according to claim 3, wherein after the step of inputting the input current into the three-dimensional simulation model to obtain an output test result of the three-dimensional simulation model according to the metal loss coefficient, the method comprises:
acquiring the inductance temperature rise of the magnetic core inductance element under the input current according to the test result;
judging whether the electrical equipment is preset to meet the thermal management requirement according to the inductance temperature rise;
and if not, adjusting parameters of the magnetic core inductance element of the electric equipment.
7. Method for testing a magnetic core inductive element according to claim 5 or 6, characterized in that said step of adjusting parameters of the magnetic core inductive element of the electrical device comprises:
adjusting the structure and/or material parameters of a magnetic core inductance element of the electrical equipment to obtain an adjusted magnetic core inductance element;
and retesting the adjusted magnetic core inductance element.
8. A magnetic core inductance component testing apparatus, comprising:
the model building module is used for building a three-dimensional simulation model of the magnetic core inductance element of the electrical equipment;
the boundary generation module is used for generating boundary conditions of the three-dimensional simulation model;
and the test module is used for carrying out simulation test on the magnetic core inductance element according to the boundary condition and the three-dimensional simulation model.
9. An electronic device, comprising: memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 1-7 when the computer program is executed.
10. A computer readable storage medium having instructions stored thereon which, when run on a computer, cause the computer to perform the method of any of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310153759.2A CN116306404A (en) | 2023-02-21 | 2023-02-21 | Method, device, equipment and storage medium for testing magnetic core inductance element |
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|---|---|---|---|
| CN202310153759.2A CN116306404A (en) | 2023-02-21 | 2023-02-21 | Method, device, equipment and storage medium for testing magnetic core inductance element |
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| CN116306404A true CN116306404A (en) | 2023-06-23 |
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| CN202310153759.2A Pending CN116306404A (en) | 2023-02-21 | 2023-02-21 | Method, device, equipment and storage medium for testing magnetic core inductance element |
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