129 results about "Double pulse" patented technology

The invention discloses a broadband oscillation characterization platform of a multi-chip power module and a near-field characteristic evaluation method, and belongs to the technical field of power electronics. The continuous operation condition of the power converter is decoupled into a series of discrete switching points, transient near-field radiation data of a to-be-tested power module under the discrete switching points are obtained through a double-pulse test, and near-magnetic field radiation signals are reconstructed; performing time-frequency analysis on the reconstructed near magnetic field radiation signal to generate a two-dimensional time-frequency matrix; and calculating a radiation energy entropy value based on the two-dimensional time-frequency matrix, fusing the radiation energy entropy value with the peak amplitude in the two-dimensional time-frequency matrix to generate a comprehensive EMI index for evaluating the broadband oscillation electromagnetic interference risk, and triggering EMI risk early warning when the comprehensive EMI index exceeds a threshold value. According to the method, the spectrum complexity is quantified through the radiation energy entropy, the multi-dimensional EMI risk assessment is carried out by fusing the peak amplitude of the time-frequency matrix, and the broadband oscillation in the multi-chip parallel power module can be accurately and efficiently represented.

The invention relates to the technical field of spectral analysis, and particularly discloses an underwater intelligent detection machine system and method based on laser-induced breakdown spectroscopy, and the system comprises an underwater carrying platform, an orthogonal double-pulse laser-induced breakdown spectroscopy probe, a multi-sensor cooperative sensing module, a mechanical arm, a central control unit and a water surface control station. The method comprises the following steps: a first pulse vertically builds bubbles, and a second pulse parallelly enters the bubbles and is triggered according to delay time; the central control unit maintains a working distance of 1-2cm based on a distance measurement closed loop, and adaptively adjusts delay time and energy in combination with water depth pressure and cavitation feedback; and the water surface control station carries out denoising normalization on the spectrum calibration and carries out element qualitative and quantitative operation to generate an element distribution atlas. According to the method, plasma is excited in a cavitation bubble gas environment through orthogonal double pulses, and in-situ real-time high-sensitivity element detection of an underwater target is realized in combination with distance closed loop and parameter self-adaption.

The invention discloses a multi-information synchronous measurement device and method for a whole space, and belongs to the technical field of spectral measurement and analysis. The device comprises a double-pulse laser excitation module, a multi-angle spectrum acquisition module, a transient imaging module, a backlight shadow imaging module and a synchronous control module. The measurement method comprises the steps of sample positioning pretreatment, double-pulse plasma excitation, multi-angle spectrum synchronous acquisition, plasma transient imaging, shock wave backlight shadow imaging, detection post-treatment and the like, and synchronous acquisition of multi-dimensional data is realized through accurate time sequence control. Omnibearing synchronous measurement of plasma spectrum, form and shock wave propagation is realized, and the device has the advantages of high data time consistency, comprehensive information acquisition, high measurement precision and high experiment efficiency, can be widely applied to the fields of material analysis, environment monitoring, plasma physical research and the like, and has wide application prospect. And the method has good adaptability in LIBS (Laser-induced Breakdown Spectroscopy) technology expansion scenes such as double pulses and magnetic confinement.

The application discloses a compressor internal flow field synchronous measurement system based on PIV and pressure sensing, relates to the technical field of compressor experimental aerodynamics measurement, and is suitable for accurate measurement of flow field parameters in a diffuser modeling test of a compressor. The system comprises a dynamic pressure sensor array, a signal conditioning module, a multichannel dynamic pressure acquisition card, a double-pulse laser, a high-speed CMOS camera, an FPGA synchronous controller, a PIV post-processing server and a multi-source data fusion workstation. The FPGA synchronous controller is used as the only time sequence reference of the double-pulse laser, the high-speed CMOS camera and the multichannel dynamic pressure acquisition card, the traditional software trigger is replaced by a hardware trigger, and system delay jitter is eliminated. The timestamp marking pulse and the first pulse trigger signal are output simultaneously, the pressure data stream obtains a sampling point index corresponding to the laser emission moment directly, and the time synchronization accuracy of the velocity field and the pressure field reaches the nanosecond level.

The invention provides a high-frequency parasitic parameter extraction and electromagnetic interference source modeling method for a vehicle high-voltage high-power IGBT (Insulated Gate Bipolar Transistor) module, which comprises the following steps of: extracting parasitic capacitance to ground and lead inductance of each pole of the IGBT module by adopting a finite element method, and combining entity port impedance measurement with a simulation mode to obtain parasitic parameters among the poles of the IGBT; corresponding high-frequency equivalent circuit models are established for electromagnetic interference sources such as bridge arms, laminated busbars and cables in sequence, finally, a double-pulse simulation and entity test platform is established by integrating parasitic parameters and the models, and the accuracy of modeling of the IGBT electromagnetic interference sources can be effectively verified by comparing simulation and test results under the same working condition. And theoretical support can be provided for analysis and optimization of an electromagnetic interference mechanism of a high-voltage system of the new energy automobile.

The invention relates to a method, a device and a system for measuring electrical parameters of an IGBT (Insulated Gate Bipolar Translator) module. The method comprises the steps of obtaining a historical double-pulse test result of an IGBT module, and obtaining a historical residual life curve; according to the difference between the historical remaining life of each abnormal inflection point and the historical remaining life of the adjacent test data point, determining the anomaly degree of the abnormal inflection point; in each abnormal interval, according to the proportion of fault working condition subintervals in the working condition data and the deviation degree of the multiple monitoring parameters, the fluctuation degree in the abnormal interval is determined; determining the matching degree of the abnormal inflection point based on the difference between the abnormity degree and the fluctuation degree of each abnormal inflection point; and performing a double-pulse test on the IGBT module once to obtain the current residual life, and correcting the current residual life based on the matching degree of the plurality of abnormal inflection points and the difference of the historical residual life between the adjacent test data points in the corresponding abnormal interval to obtain a target residual life value. According to the invention, the accuracy of residual life prediction of the IGBT module can be improved.

The invention relates to an experimental platform of a full-control device series valve. The experimental platform comprises a main control unit, a unit to be tested and a sampling unit, the main control unit comprises an upper computer used for providing a test signal of the series valve; the to-be-tested unit is composed of each full-control device and a driving module connected with the full-control device, and each driving module is in communication connection with the main control unit; the sampling unit comprises a sampling host and at least two isolation units; the isolation unit is in communication connection with the sampling host; the isolation units are not electrically connected, and the isolation units and the sampling host are not electrically connected. On one hand, the reliability of the isolation unit power supply mode is ensured; and on the other hand, the reliability of normal work of the isolation unit and the sampling host is ensured. The experiment platform can carry out safety measurement on required test points in series valve single and double pulse experiments and series valve bridge type circuit no-load, on-load and other operation experiments.

The invention relates to a double-pulse test tool and method for a full-control device series valve, and the tool comprises an upper computer main control unit which is used for transmitting a control instruction, receiving waveform data, and carrying out the automatic parameter calculation; the control unit is connected with the upper computer main control unit, comprises a high-voltage power supply, a support capacitor and a bridge arm change-over switch, and is used for providing adjustable high voltage and realizing rapid reconstruction of a test loop; the test unit is electrically connected with the control unit and the to-be-tested device and comprises a busbar box and a load inductor, and the busbar box is used for interconnecting the supporting capacitor, the load inductor, the bridge arm change-over switch and the to-be-tested device to form an energy transmission main loop; and the acquisition unit is connected with the upper computer main control unit and the test unit, comprises an oscilloscope, a voltage probe and a current probe, and is used for capturing the electrical parameter waveform of the device to be tested in real time and uploading the electrical parameter waveform to the upper computer main control unit.

The invention provides a double-pulse laser engraving method and device, and relates to the technical field of laser engraving, the double-pulse laser engraving method and device are used for engraving a gravure forme.The engraving method comprises the steps that the wavelength of femtosecond pulse laser and the wavelength of picosecond pulse laser are determined; determining the pulse delay of the femtosecond pulse laser and the picosecond pulse laser; determining a to-be-engraved area of the gravure plate; adjusting the optical path length of the femtosecond pulse laser and / or the picosecond pulse laser according to the pulse delay; synthesizing the femtosecond pulse laser and the picosecond pulse laser into double-pulse laser by using a polarization beam splitting cube; and ablating the to-be-engraved area according to the double-pulse laser. The femtosecond pulse laser is short in wavelength and high in energy, so that a to-be-engraved area can be pre-ablated quickly, when ungasified plasma is formed in the pre-ablated area, the picosecond pulse laser is used for performing secondary ablation on the pre-ablated area, the machining quality of the gravure plate can be guaranteed, the area of a heat affected area can be controlled, and the etching precision of an etched pattern can be improved.

The invention discloses a laser ion source system based on double pulses and AI feedback control and a control method, and relates to the technical field of plasmas, and the system is characterized in that a first laser generates pre-ablation laser, and generates pre-plasma on a target material; the second laser generates main ionization laser which irradiates the pre-plasma to generate main plasma; and the intelligent control unit extracts spatial features from the plume image, fuses the spatial features, the spectral data, the real-time ion current intensity and the equipment parameters to obtain high-order state features, and generates laser pulse optimization parameters according to the high-order state features and the equipment parameters. According to the invention, a double-pulse mechanism is adopted to enable main ionization to occur in the expanded plasma, charge exchange and energy dispersion are reduced, the energy divergence of the ion beam is remarkably reduced, the energy conversion efficiency is improved, AI real-time feedback control can compensate factors such as target pitting corrosion and laser power fluctuation, and very high inter-pulse stability is realized.

The invention relates to the technical field of integrated circuits, and provides a pulse trigger type level shift circuit which comprises a double-pulse current generation circuit, a high-low level shift conversion holding circuit, a high-voltage domain output shaping filter circuit and an RS trigger which are connected in sequence. The double-pulse current generating circuit responds to the jump edge of the low-voltage domain input signal to generate a transient double-pulse current signal; the high-low level shift conversion holding circuit is combined with the current signal and an input signal to generate a complementary pulse voltage signal of a high-voltage domain; the shaping and filtering circuit performs shaping and filtering on the pulse voltage; and the RS trigger finally latches the logic state and outputs a stable burr-free high-voltage domain signal. Through a pulse current triggering mode, an extremely short pulse is generated only when a signal jumps, a quiescent current path is eliminated, and low static power consumption is achieved; meanwhile, fast level flipping under high voltage difference is achieved through pulse driving, the requirement for the input signal driving capacity is low, and the characteristics of high speed and low power consumption are considered.

The application relates to a power device dynamic on-resistance detection method, system, device, storage medium and program product, which is applied to a power device dynamic on-resistance detection system, and the power device dynamic on-resistance detection system comprises an upper computer, a controller, a double-pulse test circuit and a signal collector, wherein the double-pulse test circuit is installed with a measured gallium nitride power device; the method comprises the following steps: under the condition that the test temperature of the measured gallium nitride power device meets preset test conditions, sending multiple groups of double-pulse test signals to the double-pulse test circuit through the controller; collecting multiple groups of electrical test parameters of the measured gallium nitride power device under the multiple groups of double-pulse test signals through the signal collector; and detecting the on-resistance of the measured gallium nitride power device based on the multiple groups of electrical test parameters through the upper computer. The method improves the detection accuracy of power device dynamic on-resistance detection.

The utility model discloses a femtosecond laser surgery system based on wavefront modulation, a laser device of the femtosecond laser surgery system emits double-pulse laser, the first pulse laser is low in energy and is used for exciting glow / fluorescence signals in a turbid crystalline lens; the excitation light signal penetrates through the turbid medium and is imaged on the wavefront measurer through the focusing lens; the excitation signal light wave front carries turbid medium scattering information on a light propagation path. The wavefront measurer carries out conjugate processing on captured wavefront information and loads the information to the wavefront modulator, wavefront pre-modulation is carried out on a second strong pulse laser, and scattering of light in a turbid medium is compensated. The second cutting intense pulse laser is focused in the turbid medium in a high-quality mode, and effective focusing is achieved.

The utility model relates to the technical field of optical fiber laser, concretely is a kind of main amplifier and high peak value double-pulse optical fiber laser, the main amplifier includes water-cooling mounting plate and the first active optical fiber, active pumping signal combiner, space isolator, beam expander lens group, reflector group, power meter that are sequentially arranged in the water-cooling mounting plate, there is quartz end cap on the output optical fiber of the active pumping signal combiner, long barrel diaphragm is provided between the reflector group, the main amplifier is located on the reflection output light path of reflector group still be provided with window piece.The utility model is through pumping signal combiner, active optical fiber, cladding light stripping area, quartz end cap height integration, greatly reduce nonlinear effect, space isolator, beam expander lens group are separated simultaneously greatly enhanced the use flexibility, and internal device can be replaced, and the scope of application is wide.

The embodiment of the invention provides a power device test system and a power device test method, and the system comprises a double-pulse test board which is used for providing a double-pulse signal for a power device according to a first voltage, so as to enable the power device to execute the corresponding turn-off according to the double-pulse signal during the test; the first power supply is used for providing first voltage for the double-pulse test board; the second power supply is used for providing a second voltage for the power device; the oscilloscope is used for collecting operation data of the power device, generating a corresponding waveform according to the operation data and displaying the waveform; the controller is used for acquiring a configuration file and configuring the voltage value of the first power supply and the voltage value of the second power supply according to the configuration file; and configuring oscilloscope acquisition parameters according to the configuration file, and determining corresponding test parameters of the power device according to a waveform processing mode in the configuration file. Therefore, the power device is automatically tested, the time required by the test is shortened, and the test efficiency is improved.

The invention discloses a method for realizing optical cable fiber core health prediction by using a B-OTDR technology, which comprises the following steps: a multi-physical quantity fusion detection module synchronously obtains Brillouin scattering and Raman scattering signals by using a double-pulse modulation technology, separates two kinds of scattered light through frequency division multiplexing, and constructs a strain-temperature decoupling model; and the dynamic self-adaptive sampling module automatically switches sampling resolution according to the position of the optical fiber, adopts high-resolution continuous scanning on a historical fault high-incidence area, adopts low-resolution sparse sampling on a normal area, and automatically triggers local encryption sampling when an abnormal event is detected. The double pulses are respectively calculated by adopting a double-pulse modulation technology, so that the prediction accuracy is improved; dynamic self-adaptive sampling is adopted, segmented sampling is carried out on a high fault area and a normal area, meanwhile, local sampling is carried out on an abnormal section, the invalid data volume is reduced, and meanwhile the monitoring precision of a key area is ensured.

1. Name of the designed product: top spray shower (double pulse dense rain 400). 2. Use of the designed product: top spray shower for shower. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The invention provides a non-uniform double-pulse modulation method based on a TCM. The non-uniform double-pulse modulation method comprises the steps that 1, a non-uniform double-pulse period modulation model is constructed; 2, carrying out radar echo modulation analysis; 3, analyzing a pulse compression result; and step 4, regulation and control effect analysis based on a CFAR detector. According to the method, the key parameter of the time delay factor is innovatively introduced, the modulation flexibility and unpredictability are greatly improved through the collaborative design of three degrees of freedom, and the problems of insufficient flexibility and the like existing in a radar target feature regulation and control method are solved. Compared with a regulation and control method based on TCM uniform monopulse period modulation, the generated harmonic peak amplitude distribution is diversified, screening of regular signals by a radar CFAR detector is effectively avoided, and the number of effective harmonic peaks passing detection is remarkably increased. According to the invention, precise suppression or enhancement of specific-order harmonics can be realized, and a technical approach is provided for implementing flexible and dynamic radar target feature regulation and control.

The invention discloses a carving machining method and system based on vector pulse laser, and belongs to the technical field of laser carving, the carving machining method based on the vector pulse laser comprises the steps that linear polarization femtosecond pulse laser is split into femtosecond pre-pulse laser and picosecond main pulse laser; adjusting the pulse time delay between the femtosecond pre-pulse laser and the picosecond main pulse laser; combining the femtosecond pre-pulse laser and the picosecond main pulse laser after delay regulation and control; the femtosecond pre-pulse laser is converted into an angularly polarized femtosecond pre-pulse light beam, the picosecond main pulse laser is converted into a radially polarized picosecond main pulse light beam, and a double-pulse light beam combination of the angularly polarized femtosecond pre-pulse light beam and the radially polarized picosecond main pulse light beam is formed; and the to-be-machined workpiece is ablated and engraved through the double-pulse light beam combination. And by means of the synergistic effect of double pulses and precise time delay, the width and fusion damage of a heat affected zone are remarkably reduced, and high-precision and low-damage carving machining is achieved.

The application relates to the technical field of high-speed data communication materials and high-speed interconnection structures, and discloses a composite silver foil applied to 224G and 448G high-frequency communication and a high-speed interconnection structure. The single-surface silver layer composite copper foil comprises a copper foil base tape, a first surface of the copper foil base tape is provided with a continuous and dense silver layer and constitutes a high-frequency signal transmission surface, and a second surface forms a bonding function surface; the silver layer is formed through pulse electroplating or double-pulse electroplating and is subjected to electrochemical leveling or electro-polishing treatment, so that the surface roughness Ra of the leveled silver layer is less than or equal to 0.05 mu m. The high-speed interconnection structure comprises a dielectric layer, a bonding layer and the single-surface silver layer composite copper foil, a side where the silver layer is located constitutes a high-frequency signal transmission side, and the second surface is combined with the dielectric layer through the bonding layer. The scheme can consider high-frequency low-loss transmission performance, bonding reliability with the dielectric layer and storage stability, and is suitable for 224G and 448G high-frequency data communication.

The application discloses a method for inhibiting thermionic emission based on TTM-MD simulation, which adjusts the energy distribution and delay time of double pulses to regulate the electron temperature, and obtains the maximum delay time introduced under the condition of meeting the processing requirements according to the relationship between the temperature rising time and the delay. The method can obtain the maximum delay introduced under the condition of meeting the processing requirements, reduces the electron temperature, and inhibits the thermionic emission.

The invention discloses a modularized inverter pulse width adjustment testing device and method, and the testing steps of providing a DC bus voltage, generating and transmitting a double-pulse signal, simulating a load, collecting a signal, adjusting the pulse width and the like can be orderly completed in the device. An operator can set parameters through the upper computer and start the test, so that the test convenience is improved; besides, the resistance measurement module automatically accesses and switches adjustable resistance measurement by means of the relay combination module without manual intervention, the isolation test module automatically acquires and uploads signals, the upper computer automatically calculates delay time and a fine tuning resistance value according to the signals, and the pulse width adjustment module automatically adjusts the resistance value according to a result, so that the test time is greatly shortened. Besides, resistance measurement adopts a high-precision method, an accurate algorithm is combined, and calculation is performed based on accurate measurement data and acquired information, so that manual errors are avoided, and the accuracy of a test result is improved.

A test and measurement system includes a device under test (DUT) interface configured to couple to at least one DUT and a measurement instrument coupled to the interface. The apparatus includes one or more processors configured to, when testing the DUT, receive a measurement signal at a first input channel and generate a first sample waveform from the measurement signal using a first set of parameters, receive a measurement signal at a second input channel and generate a second sample waveform from the measurement signal using a second set of parameters, and generating a measurement waveform from a combination of the first sample waveform and the second sample waveform. Furthermore, the measuring instrument is configured to determine a build-up error in a first pulse of the double-pulse test, and then compensate for the build-up error for a measurement made in a subsequent pulse.

The invention relates to the technical field of electronics, and discloses a double-pulse test method, device and equipment and a storage medium, and the method comprises the steps: obtaining multi-source feature information of a tested device to generate a device feature code; performing a double-pulse test based on the device feature code, and collecting time-frequency domain data of the tested device in the test process; performing oscillation feature recognition on the time-frequency domain data to obtain oscillation feature data; adjusting the operation state of the double-pulse test based on the oscillation characteristic data, and terminating the test until a preset suppression target is met or a preset repeated test threshold value is reached, so as to obtain a final test result; according to the invention, on the basis of feature recognition and data acquisition, continuous oscillation adjustment is realized, the optimal test operation state adaptive to the tested device is generated, the core problems of much manual intervention, long test period and poor oscillation suppression effect of the existing double-pulse test are solved, and the stability of the double-pulse test is improved.

The invention discloses a controlled aerosol laser-induced breakdown spectroscopy detection method and device, and relates to the technical field of laser plasma emission spectroscopy. The method comprises the following steps: placing a to-be-detected sample with fixed mass in a closed cavity filled with inert gas; ablating all the to-be-detected samples in the closed cavity by using laser with fixed wavelength, mixing ablated to-be-detected sample particles with inert gas to form aerosol with uniform mass density, and exciting the aerosol to form plasma; the plasma spontaneously emits light; one or more of pressure intensity, double-pulse excitation and resonance excitation in the closed cavity are regulated and controlled, so that the intensity of light emitted by the plasma is enhanced; and obtaining the content of the to-be-analyzed element in the to-be-detected sample according to the intensity-enhanced plasma emitted light. According to the method, the influence of the matrix effect on the laser-induced breakdown spectroscopy technology can be reduced, and the quantification accuracy is improved.

The invention belongs to the technical field of photoelectric detection, and particularly relates to a near-infrared photoelectric synapse device and a preparation method thereof. The near-infrared photoelectric synapse device comprises a conductive substrate, a transition metal sulfide layer, a perovskite active layer and an electrode layer which are stacked from bottom to top, wherein when the thickness of the transition metal sulfide layer is gradually increased within a preset thickness range, a high-density interface capture state is formed between the transition metal sulfide layer and the perovskite active layer, so that the double-pulse facilitation index of the near-infrared photoelectric synapse device is gradually increased under the stimulation of near-infrared pulses; therefore, photoelectric response and short-time synaptic plasticity are realized in a near-infrared band. The photoelectric synaptic device designed in the scheme can sense infrared signals, the working wave band range of the device is widened, and meanwhile, the photoelectric synaptic device has a high double-pulse simplification index, namely, the device can show a low-energy-consumption strong synaptic behavior in a near-infrared wave band, so that the photoelectric synaptic device can be used for constructing a brain-like vision and neuromorphic computing system.

The application provides a bored pile post-grouting process energy consumption intelligent optimization and regulation method and system, relates to the field of automatic control of industrial processes, and comprises the following steps: collecting grouting construction data to establish a database; establishing an energy consumption prediction benchmark value based on historical data, dynamically comparing to generate working condition optimization instructions; adjusting parameters and collecting energy consumption data to determine the best efficiency parameter combination; and when the energy consumption exceeds the preset value, switching to a main and auxiliary double-pulse grouting mode and optimizing pulse sequence parameters. The application can realize intelligent optimization and regulation of grouting process energy consumption, improve grouting efficiency, and reduce energy consumption.

The application provides an IGBT testing device and testing equipment, comprising: a control device and a testing device connected in communication; the control device comprises a first Bluetooth module; the testing device comprises a second Bluetooth module and a safety detection module; the testing device is connected with an external IGBT; the control device is used for sending testing data to the second Bluetooth module through the first Bluetooth module; the testing device is used for performing double-pulse testing on the external IGBT according to the testing data, obtaining testing parameters of the external IGBT, and sending the testing parameters to the control device through the second Bluetooth module; and the testing device is also used for stopping testing when the safety detection module generates an alarm signal and sending the alarm signal to the control device through the second Bluetooth module. The safety of IGBT double-pulse testing is improved by remotely performing IGBT testing and setting a safety detection module on the IGBT testing device, so as to guarantee the personal safety of the tester.

The present application relates to a kind of detection device of the number of times of output pulse triggered by pulse laser, at least including pulse laser and pulse number detection circuit: the output end of pulse laser is to ranging target body after collimator, the lens of two different focal lengths in collimator is coincided in focal length, and pinhole diaphragm is placed in focal length coinciding point, the output light before collimation of pulse laser becomes relatively thin collimated output light after collimation and pinhole diaphragm filtering, the side of optical axis in front end of pinhole diaphragm is fixed with photodiode, and photodiode is used to receive filtered heat dissipation light, and the heat dissipation light received by photodiode becomes electrical signal, and is connected to the input end of pulse number detection circuit by interface.The present application can accurately and effectively detect single and double pulse of laser, eliminate the misjudgment to the performance index of laser, and improve production efficiency.

The invention discloses a double-pulse test circuit and method suitable for a high-voltage SiC MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor), and belongs to the technical field of semiconductor device testing. The circuit comprises an FPGA (Field Programmable Gate Array) controller, a driving main chip, a desaturation short circuit detection circuit, a bidirectional voltage-stabilizing protection circuit, a SiC MOSFET upper tube test loop and a SiC MOSFET lower tube; the output end of the FPGA controller is connected with the input end of the SiC MOSFET upper tube test loop and the input end of the driving board, and the input end of the FPGA controller is connected with the output end of the driving main chip. The input end of the desaturation short circuit detection circuit is electrically connected with the drain electrode and the source electrode of the SiC MOSFET lower tube, and the input end of the desaturation short circuit detection circuit is electrically connected with the driving main chip. One end of the bidirectional voltage stabilization protection circuit is connected with the output end of the driving main chip, and the other end of the bidirectional voltage stabilization protection circuit is connected with the grid electrode of the SiC MOSFET lower tube. The high-voltage SIC MOSFET test circuit can solve the problem that the high-voltage SIC MOSFET test circuit is low in safety.