CN112464590A - Cable radiation analysis method and device for high-power switching device - Google Patents
Cable radiation analysis method and device for high-power switching device Download PDFInfo
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Abstract
The present application relates to a cable radiation analysis system method and apparatus for high power switching devices. The method comprises the following steps: and acquiring circuit data of the high-power switching device to be analyzed, and constructing a corresponding circuit model in a circuit simulation software environment. And generating corresponding simulation input current according to the input current parameters of the high-power switching device to be analyzed, and inputting the simulation input current into the circuit model to obtain corresponding simulation output current. Obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switch device to be analyzed, constructing a corresponding cable radiation model in a cable radiation simulation software environment, and inputting the simulated output current into the cable radiation model to obtain a cable radiation analysis result. According to the method, the cable space radiation condition of the high-power switching device can be obtained by analysis in the circuit design stage according to the high-power switching device and the application environment of the high-power switching device, the circuit design is correspondingly improved, the later-stage experiment and rectification cost of the circuit design can be reduced, and the pertinence of the circuit design is improved.
Description
Technical Field
The present application relates to the field of circuit design technologies for high power switching devices, and in particular, to a cable radiation analysis method and apparatus for a high power switching device.
Background
With the development of wide bandgap devices, the switching speed and frequency of high power switching devices are faster and faster, the change rate of voltage and current in the circuit is also faster, and the caused radiation interference becomes more and more serious. At present, for the problem of electromagnetic compatibility of a high-power switching device, most attention is paid to conducted interference, the influence of switching frequency, rising and falling time, stray parameters in a high-frequency circuit and the like in the switching process of the device are analyzed by establishing a physical characteristic model or an equivalent circuit model of the device, and the path and the influence of common-mode current when the common-mode current is conducted or coupled to low-voltage sensitive equipment are researched. These analyses are all electromagnetic compatibility issues that are considered at the circuit level, within the system of equipment. When the spatial field radiation caused by the high-frequency power switch device is considered, the current adopted mode is to manufacture the driving circuit board firstly and then carry out experimental test of the radiation field in a half-wave darkroom. By adopting the mode, the rectification cost of the circuit design in the later period is higher, and the time is more.
Disclosure of Invention
In view of the above, there is a need to provide a cable radiation analysis method and apparatus for a high power switching device, which can evaluate the cable radiation of the high power switching device in advance.
A cable radiation analysis method for a high power switching device, comprising:
and acquiring circuit data of the high-power switching device to be analyzed, and constructing a corresponding high-power switching device circuit model in a circuit simulation software environment according to the circuit data.
Obtaining input current parameters of a high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, and inputting the simulation input current into a high-power switching device circuit model to obtain corresponding simulation output current.
Obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switching device to be analyzed, constructing a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating input of the cable radiation model according to the simulation output current, and obtaining a cable radiation analysis result of the high-power switching device to be analyzed.
In one embodiment, the steps of obtaining input current parameters of a high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, inputting the simulation input current into a high-power switching device circuit model, and obtaining corresponding simulation output current include:
obtaining input current parameters of a high-power switching device to be analyzed, and constructing a corresponding power supply model in a circuit simulation software environment according to the input current parameters.
And taking the output of the power supply model as the input of the high-power switching device circuit model to obtain the simulated output current of the high-power switching device circuit model.
In one embodiment, the steps of obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switching device to be analyzed, constructing a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating input of the cable radiation model according to the simulation output current, and obtaining a cable radiation analysis result of the high-power switching device to be analyzed include:
obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switch device to be analyzed, and constructing a corresponding cable model in a cable radiation simulation software environment according to the output cable parameters and the load parameters.
And generating a corresponding cable excitation source model according to the simulation output current.
And taking the output of the cable excitation source model as the input of the cable model to obtain a corresponding cable radiation model.
And obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the output of the cable radiation model.
In one embodiment, the simulated output current is a periodic current signal. The step of generating a corresponding cable excitation source model according to the simulated output current comprises the following steps:
and acquiring a periodic current signal of the simulation output current in a period, and generating a corresponding cable excitation source model according to the periodic current signal.
In one embodiment, the step of obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the output of the cable radiation model includes:
in a cable radiation simulation software environment, obtaining a corresponding measuring position according to the installation environment of a high-power switch device to be analyzed, and obtaining a cable radiation value of a cable radiation model at the measuring position.
And obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the relation between the cable radiation value and the measurement position.
A cable radiation analysis apparatus for a high power switching device, comprising:
and the high-power switching device circuit model building module is used for obtaining circuit data of the high-power switching device to be analyzed and building a corresponding high-power switching device circuit model in a circuit simulation software environment according to the circuit data.
And the high-power circuit simulation module is used for acquiring input current parameters of the high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, and inputting the simulation input current into the high-power switching device circuit model to obtain corresponding simulation output current.
The high-power circuit cable radiation analysis module is used for obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switch device to be analyzed, building a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating input of the cable radiation model according to the simulation output current, and obtaining a cable radiation analysis result of the high-power switch device to be analyzed.
A cable radiation analysis system for a high-power switching device comprises a circuit simulation device and a cable radiation simulation device.
The circuit simulation equipment is provided with a circuit simulation software environment and is used for constructing a corresponding high-power switch device circuit model according to preset circuit data of a high-power switch device to be analyzed, generating corresponding simulation input current according to preset input current parameters of the high-power switch device to be analyzed, and inputting the simulation input current into the high-power switch device circuit model to obtain corresponding simulation output current.
And installing a cable radiation simulation software environment on the cable radiation simulation equipment, constructing a corresponding cable radiation model according to output cable parameters and load parameters corresponding to the installation environment of the high-power switch device to be analyzed, and generating input of the cable radiation model according to the simulation output current to obtain a cable radiation analysis result of the high-power switch device to be analyzed.
In one embodiment, the circuit simulation software environment is an LTspice simulation software environment, and the cable radiation simulation software environment is a CST cable studio software environment.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
and acquiring circuit data of the high-power switching device to be analyzed, and constructing a corresponding high-power switching device circuit model in a circuit simulation software environment according to the circuit data.
Obtaining input current parameters of a high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, and inputting the simulation input current into a high-power switching device circuit model to obtain corresponding simulation output current.
Obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switching device to be analyzed, constructing a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating input of the cable radiation model according to the simulation output current, and obtaining a cable radiation analysis result of the high-power switching device to be analyzed.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
and acquiring circuit data of the high-power switching device to be analyzed, and constructing a corresponding high-power switching device circuit model in a circuit simulation software environment according to the circuit data.
Obtaining input current parameters of a high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, and inputting the simulation input current into a high-power switching device circuit model to obtain corresponding simulation output current.
Obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switching device to be analyzed, constructing a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating input of the cable radiation model according to the simulation output current, and obtaining a cable radiation analysis result of the high-power switching device to be analyzed.
Compared with the prior art, according to the cable radiation analysis system method, the device, the system, the computer equipment and the storage medium for the high-power switching device, corresponding output cable parameters and output load parameters are obtained according to the installation and use environment of the high-power switching device according to circuit data and input current parameters of the high-power switching device to be analyzed, a corresponding high-power switching device circuit model is firstly established in a circuit simulation software environment, corresponding simulation input current is generated according to the input current parameters and is input into the high-power switching device circuit model, and corresponding simulation output current is obtained. And then constructing a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, and generating the input of the cable radiation model according to the simulation output current to obtain a cable radiation analysis result of the high-power switching device to be analyzed. This application can obtain the space radiation's that high power switching device arouses through the cable condition at circuit design stage analysis according to high power switching device's circuit and application environment to according to the corresponding improvement circuit design of the space radiation result that obtains, can reduce circuit design's later stage experiment and rectification cost, improve circuit design's pertinence.
Drawings
FIG. 1 is a diagram of steps of a cable radiation analysis system method for a high power switching device, in one embodiment;
FIG. 2 is a diagram of a simulation scenario in one embodiment;
FIG. 3 is a circuit schematic of a high power switching device circuit model in one embodiment;
FIG. 4 is a simulated output current signal of a circuit model of a high power switching device in another embodiment;
FIG. 5 is a schematic view of a cable radiation model established in one embodiment;
FIG. 6 is a schematic circuit diagram of a radiation model of a cable in one embodiment;
FIG. 7 is a graph of cable radiation measurements in one embodiment;
FIG. 8 is a graph of cable radiated field strength versus measurement point distance in one embodiment;
FIG. 9 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, a cable radiation analysis method for a high power switching device is provided, which is described by taking an example that a high power switching device to be analyzed is a SiC MOSFET device, a circuit simulation software environment is an ltslice simulation software environment, and a cable radiation simulation software environment is a CST cable studio software environment, and includes the following steps:
and 102, acquiring circuit data of the SiC MOSFET device, and constructing a corresponding high-power switching device circuit model in an LTspice software environment according to the circuit data.
And step 104, acquiring input current parameters of the SiC MOSFET device, and constructing a corresponding power supply model in an LTspice software environment according to the input current parameters. And taking the output of the power supply model as the input of the high-power switching device circuit model to obtain the simulated output current of the high-power switching device circuit model.
Furthermore, the input voltage parameter of the SiC MOSFET device or the parameter requirement of the SiC MOSFET device on the circuit connected to the input terminal may be obtained, and the corresponding simulated output current may be generated according to the obtained parameter value.
And 106, obtaining corresponding output cable parameters and load parameters according to the installation environment of the SiC MOSFET device, and constructing a corresponding cable model in the CST cable working room software environment according to the output cable parameters and the load parameters.
And 108, acquiring a periodic current signal of the simulation output current in one period, and generating a corresponding cable excitation source model according to the periodic current signal. And taking the output of the cable excitation source model as the input of the cable model to obtain a corresponding cable radiation model. And obtaining a cable radiation analysis result of the SiC MOSFET device according to the output of the cable radiation model.
And step 110, in a CST cable studio software environment, obtaining a corresponding measuring position according to the installation environment of the SiC MOSFET device, and obtaining a cable radiation value of a cable radiation model at the measuring position. And obtaining a cable radiation analysis result of the SiC MOSFET device according to the relation between the cable radiation value and the measurement position.
Specifically, in order to analyze the cable radiation caused by the SiC MOSFET device, the present embodiment builds up a simulation scenario as shown in fig. 2 through steps 102 to 108. The SiC MOSFET device is used to construct a full-bridge single-phase inverter circuit, and accordingly, a dc voltage is used as an input of the SiC MOSFET device after passing through a LISN circuit (line impedance stabilization network), and an ac voltage output from the SiC MOSFET device is connected to a load terminal through a cable. It is necessary to analyze the radiation of the cable between the full bridge single phase inverter circuit and the load.
The implementation of the simulation scenario in fig. 2 is divided into two phases. In the first stage, an inverter circuit is built in the ltspe software, as shown in fig. 3, and includes a dc power supply, an LISN circuit, and a full-bridge single-phase inverter circuit. The output of the inverter circuit is an ac voltage of 220V as shown in fig. 4.
And in the second stage, a 3D model is established in a CST cable working chamber, as shown in FIG. 5, a SiC inverter and a driving circuit board corresponding to the inverter circuit are arranged on the table, and the output end of the SiC inverter is connected to a resistive load through two cables. Parameters of the two cables, including electrical properties thereof, are set according to the installation and use environment of the SiC inverter, and the cables are mapped into a circuit of the schema module by a 2d (tl) Modeling tool of the CST cable studio, and a Schematic diagram of the established circuit is shown in fig. 6. Since the ac output voltage in fig. 4 is a periodic signal, one period of which includes all the information needed to perform the analysis of the radiation by the cable, the signal of one period is intercepted as the input excitation source for the cable in fig. 5.
After the simulation test is started, monitoring points are correspondingly selected in the 3D model in fig. 5 according to the distance between the output cable of the SiC inverter and devices needing apple radiation influence in the installation and use environment, so as to analyze the influence of cable radiation caused by the monitoring points on the devices. Taking the detection points with distances of 250mm, 500mm, 1000mm, 2000mm and 3000mm as examples, the CST transition co-simulation is performed on the schema interface to obtain the field intensity distribution diagram of each measurement point, as shown in fig. 7.
It can be seen that the resonant frequency near the low frequency is related to the input driver period at a short distance, and has a peak near 70MHz, where the field strength at all monitoring points has a large variation, which is caused by the resonant frequency of some parasitic parameters in the SiC inverter. The distance field intensity values at the 70MHz frequency point are selected to draw a relation graph of distance and field intensity, as shown in FIG. 8, it can be seen that the field intensity is attenuated along with the increase of the distance, and the speed is slower and slower.
According to the circuit of the high-power switching device and the application environment thereof, the situation of space radiation of the high-power switching device caused by cables is analyzed and obtained in the circuit design stage, the circuit design is correspondingly improved according to the obtained space radiation result, the later-stage experiment and rectification cost of the circuit design can be reduced, and the pertinence of the circuit design is improved.
It should be understood that, although the steps in the flowchart of fig. 1 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 1 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
In one embodiment, there is provided a cable radiation analysis apparatus for a high power switching device, comprising:
and the high-power switching device circuit model building module is used for obtaining circuit data of the high-power switching device to be analyzed and building a corresponding high-power switching device circuit model in a circuit simulation software environment according to the circuit data.
And the high-power circuit simulation module is used for acquiring input current parameters of the high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, and inputting the simulation input current into the high-power switching device circuit model to obtain corresponding simulation output current.
The high-power circuit cable radiation analysis module is used for obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switch device to be analyzed, building a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating input of the cable radiation model according to the simulation output current, and obtaining a cable radiation analysis result of the high-power switch device to be analyzed.
In one embodiment, the high-power circuit simulation module is used for acquiring input current parameters of a high-power switching device to be analyzed, and constructing a corresponding power supply model in a circuit simulation software environment according to the input current parameters. And taking the output of the power supply model as the input of the high-power switching device circuit model to obtain the simulated output current of the high-power switching device circuit model.
In one embodiment, the high-power circuit cable radiation analysis module is used for obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switch device to be analyzed, and constructing a corresponding cable model in a cable radiation simulation software environment according to the output cable parameters and the load parameters. And generating a corresponding cable excitation source model according to the simulation output current. And taking the output of the cable excitation source model as the input of the cable model to obtain a corresponding cable radiation model. And obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the output of the cable radiation model.
In one embodiment, the simulated output current is a periodic current signal. The high-power circuit cable radiation analysis module is used for acquiring periodic current signals of the simulation output current in a period and generating a corresponding cable excitation source model according to the periodic current signals.
In one embodiment, the high-power circuit cable radiation analysis module is used for obtaining a corresponding measurement position according to an installation environment of a high-power switch device to be analyzed in a cable radiation simulation software environment, and obtaining a cable radiation value of a cable radiation model at the measurement position. And obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the relation between the cable radiation value and the measurement position.
A cable radiation analysis system for a high-power switching device comprises a circuit simulation device and a cable radiation simulation device.
The circuit simulation equipment is provided with a circuit simulation software environment and is used for constructing a corresponding high-power switch device circuit model according to preset circuit data of a high-power switch device to be analyzed, generating corresponding simulation input current according to preset input current parameters of the high-power switch device to be analyzed, and inputting the simulation input current into the high-power switch device circuit model to obtain corresponding simulation output current.
And installing a cable radiation simulation software environment on the cable radiation simulation equipment, constructing a corresponding cable radiation model according to output cable parameters and load parameters corresponding to the installation environment of the high-power switch device to be analyzed, and generating input of the cable radiation model according to the simulation output current to obtain a cable radiation analysis result of the high-power switch device to be analyzed.
In the cable radiation analysis system for the high-power switching device provided by this embodiment, hardware of each device may be, but is not limited to, various servers, personal computers, and notebook computers.
Specific limitations regarding the cable radiation analysis apparatus and system for the high power switching device can be found in the above limitations regarding the cable radiation analysis method for the high power switching device, which are not described herein again. The modules in the cable radiation analysis device for the high-power switching device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 9. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a cable radiation analysis method for a high power switching device. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 9 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, there is provided a computer device comprising a memory storing a computer program and a processor implementing the following steps when the processor executes the computer program:
and acquiring circuit data of the high-power switching device to be analyzed, and constructing a corresponding high-power switching device circuit model in a circuit simulation software environment according to the circuit data.
Obtaining input current parameters of a high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, and inputting the simulation input current into a high-power switching device circuit model to obtain corresponding simulation output current.
Obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switching device to be analyzed, constructing a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating input of the cable radiation model according to the simulation output current, and obtaining a cable radiation analysis result of the high-power switching device to be analyzed.
In one embodiment, the processor, when executing the computer program, further performs the steps of: obtaining input current parameters of a high-power switching device to be analyzed, and constructing a corresponding power supply model in a circuit simulation software environment according to the input current parameters. And taking the output of the power supply model as the input of the high-power switching device circuit model to obtain the simulated output current of the high-power switching device circuit model.
In one embodiment, the processor, when executing the computer program, further performs the steps of: obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switch device to be analyzed, and constructing a corresponding cable model in a cable radiation simulation software environment according to the output cable parameters and the load parameters. And generating a corresponding cable excitation source model according to the simulation output current. And taking the output of the cable excitation source model as the input of the cable model to obtain a corresponding cable radiation model. And obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the output of the cable radiation model.
In one embodiment, the simulated output current is a periodic current signal. The processor, when executing the computer program, further performs the steps of: and acquiring a periodic current signal of the simulation output current in a period, and generating a corresponding cable excitation source model according to the periodic current signal.
In one embodiment, the processor, when executing the computer program, further performs the steps of: in a cable radiation simulation software environment, obtaining a corresponding measuring position according to the installation environment of a high-power switch device to be analyzed, and obtaining a cable radiation value of a cable radiation model at the measuring position. And obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the relation between the cable radiation value and the measurement position.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
and acquiring circuit data of the high-power switching device to be analyzed, and constructing a corresponding high-power switching device circuit model in a circuit simulation software environment according to the circuit data.
Obtaining input current parameters of a high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, and inputting the simulation input current into a high-power switching device circuit model to obtain corresponding simulation output current.
Obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switching device to be analyzed, constructing a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating input of the cable radiation model according to the simulation output current, and obtaining a cable radiation analysis result of the high-power switching device to be analyzed.
In one embodiment, the computer program when executed by the processor further performs the steps of: obtaining input current parameters of a high-power switching device to be analyzed, and constructing a corresponding power supply model in a circuit simulation software environment according to the input current parameters. And taking the output of the power supply model as the input of the high-power switching device circuit model to obtain the simulated output current of the high-power switching device circuit model.
In one embodiment, the computer program when executed by the processor further performs the steps of: obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switch device to be analyzed, and constructing a corresponding cable model in a cable radiation simulation software environment according to the output cable parameters and the load parameters. And generating a corresponding cable excitation source model according to the simulation output current. And taking the output of the cable excitation source model as the input of the cable model to obtain a corresponding cable radiation model. And obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the output of the cable radiation model.
In one embodiment, the simulated output current is a periodic current signal. The computer program when executed by the processor further realizes the steps of: and acquiring a periodic current signal of the simulation output current in a period, and generating a corresponding cable excitation source model according to the periodic current signal.
In one embodiment, the computer program when executed by the processor further performs the steps of: in a cable radiation simulation software environment, obtaining a corresponding measuring position according to the installation environment of a high-power switch device to be analyzed, and obtaining a cable radiation value of a cable radiation model at the measuring position. And obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the relation between the cable radiation value and the measurement position.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of cable radiation analysis for a high power switching device, the method comprising:
obtaining circuit data of a high-power switching device to be analyzed, and constructing a corresponding high-power switching device circuit model in a circuit simulation software environment according to the circuit data;
acquiring input current parameters of the high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, and inputting the simulation input current into the high-power switching device circuit model to obtain corresponding simulation output current;
obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switching device to be analyzed, constructing a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, and generating input of the cable radiation model according to the simulation output current to obtain a cable radiation analysis result of the high-power switching device to be analyzed.
2. The method according to claim 1, wherein the step of obtaining input current parameters of the high power switching device to be analyzed, generating corresponding simulated input current according to the input current parameters, inputting the simulated input current into the high power switching device circuit model, and obtaining corresponding simulated output current comprises:
acquiring input current parameters of the high-power switching device to be analyzed, and constructing a corresponding power supply model in the circuit simulation software environment according to the input current parameters;
and taking the output of the power supply model as the input of the high-power switching device circuit model to obtain the simulation output current of the high-power switching device circuit model.
3. The method according to claim 1, wherein the step of obtaining the cable radiation analysis result of the high power switching device to be analyzed comprises the steps of obtaining corresponding output cable parameters and load parameters according to the installation environment of the high power switching device to be analyzed, constructing a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating an input of the cable radiation model according to the simulation output current, and obtaining the cable radiation analysis result of the high power switching device to be analyzed:
obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switch device to be analyzed, and constructing a corresponding cable model in a cable radiation simulation software environment according to the output cable parameters and the load parameters;
generating a corresponding cable excitation source model according to the simulation output current;
taking the output of the cable excitation source model as the input of the cable model to obtain a corresponding cable radiation model;
and obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the output of the cable radiation model.
4. The method of claim 3, wherein the emulated output current is a periodic current signal;
the step of generating a corresponding cable excitation source model according to the simulation output current comprises the following steps:
and acquiring a periodic current signal of the simulation output current in a period, and generating a corresponding cable excitation source model according to the periodic current signal.
5. The method of claim 3, wherein the step of obtaining the cable radiation analysis result of the high power switching device to be analyzed according to the output of the cable radiation model comprises:
in the cable radiation simulation software environment, obtaining a corresponding measurement position according to the installation environment of the high-power switch device to be analyzed, and obtaining a cable radiation value of the cable radiation model at the measurement position;
and obtaining a cable radiation analysis result of the high-power switching device to be analyzed according to the relation between the cable radiation value and the measurement position.
6. A cable radiation analysis apparatus for a high power switching device, the apparatus comprising:
the high-power switching device circuit model building module is used for obtaining circuit data of a high-power switching device to be analyzed and building a corresponding high-power switching device circuit model in a circuit simulation software environment according to the circuit data;
the high-power circuit simulation module is used for acquiring input current parameters of the high-power switching device to be analyzed, generating corresponding simulation input current according to the input current parameters, and inputting the simulation input current into the high-power switching device circuit model to obtain corresponding simulation output current;
the high-power circuit cable radiation analysis module is used for obtaining corresponding output cable parameters and load parameters according to the installation environment of the high-power switch device to be analyzed, building a corresponding cable radiation model in a cable radiation simulation software environment according to the output cable parameters and the load parameters, generating the input of the cable radiation model according to the simulation output current, and obtaining a cable radiation analysis result of the high-power switch device to be analyzed.
7. A cable radiation analysis system for a high-power switching device is characterized by comprising a circuit simulation device and a cable radiation simulation device;
the circuit simulation equipment is provided with a circuit simulation software environment and is used for constructing a corresponding high-power switching device circuit model according to preset circuit data of a high-power switching device to be analyzed, generating corresponding simulation input current according to preset input current parameters of the high-power switching device to be analyzed, and inputting the simulation input current into the high-power switching device circuit model to obtain corresponding simulation output current;
and a cable radiation simulation software environment is installed on the cable radiation simulation equipment and is used for constructing a corresponding cable radiation model according to output cable parameters and load parameters corresponding to the installation environment of the high-power switch device to be analyzed, and generating the input of the cable radiation model according to the simulation output current to obtain a cable radiation analysis result of the high-power switch device to be analyzed.
8. The system of claim 7, wherein the circuit simulation software environment is a ltsspice simulation software environment and the cable radiation simulation software environment is a CST cable studio software environment.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.
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