306 results about "Voltage spike" patented technology

The invention relates to the technical field of fault diagnosis of power electronic equipment, and particularly discloses a fault analysis and diagnosis method and system for a mining high-voltage frequency converter, and the method comprises the steps: collecting the skin effect depth and parasitic parameter drift distance in real time under a high-frequency working condition through a multi-physics field sensor array; constructing three-dimensional current density distribution of the conductor based on a non-Euclidean space mesh generation technology, and dynamically correcting the equivalent resistivity of the conductor in combination with a metamaterial database to calculate a dynamic eddy current loss characteristic value; optimizing and solving the parasitic parameter time-varying evolution equation by using a quantum annealing algorithm to obtain a voltage peak sensitivity characteristic value; inputting the characteristic value into a pre-trained deep residual shrinkage network diagnosis model for multi-modal fusion analysis, and outputting a fault risk assessment result; according to the method, the problem of parasitic parameter time-varying characteristic modeling in the vibration environment is innovatively solved, and early warning of hidden faults is achieved.

The present invention discloses a prediction method for a crosstalk spike in a half bridge of current-source inverter with silicon carbide devices, where, the prediction method includes calculation of the crosstalk voltage spike in the circuit of current-source type double-pulse test and analysis of the effect of each parameter on the magnitude of the crosstalk spike. The prediction method of the present invention analyzes the horizontal conduction crosstalk mechanism between the gate-source junction of the MOSFET caused by the high-frequency switching action of the silicon carbide (SiC) MOSFET and the SiC Schottky diode connected in series, and derives the prediction model for the crosstalk voltage spike in the half-bridge of current-source inverter. Based on the equivalent circuit of the current-source-type double-pulse test and the crosstalk-induced mechanism, the extreme value of crosstalk voltage spike is accurately predicted, which is helpful to analyze the effects of the drive circuit and the parameters of the power circuit on the crosstalk voltage spike through the prediction model.

The invention relates to the technical field of overvoltage control, and particularly discloses an overvoltage control method and device for an IGBT module, and the method comprises the steps: carrying out the time sequence correlation analysis of collector current time sequence data through employing a deep learning algorithm after receiving a turn-off instruction, extracting the short-time fluctuation characteristics of collector current, and obtaining the short-time fluctuation characteristics of the collector current; and the initial gate resistance value is combined to dynamically predict the collector-emitter voltage peak amplitude possibly generated in the turn-off process. And based on comparison between the predicted voltage spike amplitude and a preset threshold value, an initial gate driving strategy is generated to guide the turn-off operation. In the turn-off execution stage, collector-emitter voltage data flow is monitored in real time and dynamically compared with a safety threshold value, and therefore closed-loop optimization adjustment is conducted on a driving strategy. According to the method, prospective evaluation and self-adaptive control of the overvoltage risk are realized through intelligent prediction of the turn-off transient voltage spike, the switching loss can be optimized while the overvoltage is suppressed, and the limitation of traditional fixed parameter control is broken through.

Controller and method for a switching power supply. For example, a controller for a switching power supply includes: a first terminal configured to receive a feedback voltage representing an output voltage associated with a secondary winding of the switching power supply; a second terminal configured to output a drive voltage to a first transistor associated with a primary winding coupled to the secondary winding of the switching power supply; a comparator configured to receive the feedback voltage and a predetermined feedback threshold and generate a comparison signal based at least in part on the feedback voltage and the predetermined feedback threshold; a pulse-width detector configured to detect a pulse width of the drive voltage during a first switching cycle, compare the detected pulse width with a predetermined time threshold, and generate a detection signal based at least in part on the detected pulse width and the predetermined time threshold.

The present invention discloses a radar monitoring and early warning method for open-pit mine slope stability, which relates to the technical field of geological disaster monitoring and early warning. It is used to solve the problem that existing slope radar monitoring is greatly affected by electromagnetic interference and is difficult to achieve accurate and stable real-time early warning. By obtaining the position information of the radar and the mine edge to be measured and generating a monitoring distance, the echo intensity is measured to calculate the initial reflectivity, and the radar deployment position is dynamically adjusted according to the required echo intensity. After updating the position information, multiple time periods are set to send radar signals of different frequencies. At the same time, the number of wireless devices and power supply fluctuations in the area are monitored, and the voltage spikes are extracted by using the power fluctuations of the wireless devices. The electromagnetic interference intensity is comprehensively analyzed in combination with the number of devices. The reflection change score is integrated based on the multi-frequency echo signal. The current reflectivity is calculated based on the radar echo according to the score screening standard, and compared with the initial reflectivity to determine whether an alarm is issued, thereby significantly improving the real-time and reliability of the slope instability early warning.

The invention discloses an optimized virtual vector modulation strategy of a T-type three-level inverter, which is characterized in that a sector is re-divided based on the virtual vector modulation strategy, a synthesis mode of a virtual vector is optimized, a low-amplitude common-mode voltage vector is adopted to synthesize the virtual vector, on one hand, common-mode voltage generated by the inverter can be inhibited, and on the other hand, the common-mode voltage generated by the inverter can be inhibited; and on the other hand, the optimized modulation method does not influence the neutral point potential, the smoothness of the direct output voltage of the inverter is improved, the voltage quality is improved, and the method has the advantages of low harmonic content of the output current and the like. In addition, the method solves the problems of inverter output voltage distortion, common-mode voltage spike and the like caused by a dead zone effect through a voltage vector compensation method, and has guiding significance for improving the reliability of a photovoltaic system and a micro-grid system.

The invention discloses a power module. The power module comprises a direct current busbar, a radiator, an IGBT module I and an IGBT module II, the IGBT module I and the IGBT module II are respectively arranged on a mounting surface I and a mounting surface II of the radiator; the direct-current busbar comprises a direct-current busbar I, a direct-current busbar II, a direct-current busbar III and a direct-current busbar IV; the two ends of a fourth direct-current busbar are connected with the first IGBT module and the second IGBT module respectively, and the middle of the fourth direct-current busbar is connected with the middle of a third direct-current busbar. The two ends of the direct current busbar III are respectively connected with the direct current busbar I and the direct current busbar II; the direct current busbar I and the mounting surface I as well as the direct current busbar II and the mounting surface II are oppositely arranged and parallel to each other; the first direct current capacitor assembly is connected with the first direct current busbar, and the second direct current capacitor assembly is connected with the second direct current busbar. The influence of stray inductance is reduced by optimizing a current path, and the voltage spike at the switching moment is reduced due to the reduction of the stray inductance, so that the switching loss is reduced.

While programming a first set of memory cells, a non-volatile memory apparatus determines an initial magnitude of a programming signal for a second set of memory cells based on testing during the programming of the first set of memory cells. The testing comprises sensing at a first test voltage level and sensing at a second test voltage level without apply a voltage spike between the two sensing operation. Removing the voltage spike results in a performance increase (i.e. faster programming speed) and as well as a decrease in power usage.

The utility model discloses an IGBT (Insulated Gate Bipolar Transistor) protection circuit, which comprises a driving module, the input control end of the driving module is connected with the cathode of a Zener diode D0, and the cathode of the Zener diode D0 is also connected to the emitter E of an insulated gate bipolar transistor Q0. The grid electrode G of the insulated gate bipolar transistor Q0 is connected to the driving output end of the driving module through a resistor R6, and the collector electrode C of the insulated gate bipolar transistor Q0 is connected with the overcurrent detection output end of the driving module through a fast recovery diode FR107. According to the technical scheme, transient voltage spikes can be effectively restrained, the IGBT is protected against overvoltage damage, the anti-interference capacity of the circuit is enhanced, a fast recovery diode FR107 is further arranged at the overcurrent detection output end of the driving module, the switching speed can be increased, the overvoltage phenomenon during switching-off is reduced, the service life of the IGBT and the driving module is prolonged, and the service life of the IGBT and the driving module is prolonged. And the working reliability of the whole circuit is improved.

A power converter incorporating a synchronous rectifier implements adaptive turn-off voltage control for fast turn-off of the synchronous rectifier in the continuous conduction mode. In some embodiments, the synchronous rectifier turn off detection threshold is adaptively changed as a function of the detected operation mode of the power converter. In response to detecting the power converter being operated in the continuous conduction mode, the synchronous rectifier turn off detection threshold is set to a voltage value farther away from zero volt as compared to the nominal turn off detection threshold. In this manner, the synchronous rectifier can be turned off earlier while in the continuous conduction mode. When the synchronous rectifier can be turned off quickly, large reverse current or negative current as well as large drain voltage spike at the synchronous rectifier can be avoided. The reliability of the synchronous rectifier and the power converter is improved.

The invention discloses a SiC MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) device structure for optimizing switching characteristics and a preparation method thereof, and provides a silicon carbide MOSFET device for reducing reverse output capacitance Crss, increasing input capacitance Ciss and increasing output capacitance Coss to improve Crosstalk voltage spike and a preparation method thereof. By introducing the composite gate oxide structure, the high-K material passivation layer and the P + structure at the bottom of the P-WELL into the planar silicon carbide MOSFET device, the reverse output capacitance Crss can be effectively reduced, the input capacitance Ciss can be increased, the output capacitance Coss can be increased, and finally, the Vgs voltage peak in the Crosstalk turn-off process can be effectively improved, and the performance of the device is improved. The breakdown and burnout of the device caused by overhigh voltage in the on-off process of the device are prevented, and the service life of the device is prolonged. Besides, the device structure and the preparation method are simple, and the effect is remarkable, so that high-performance and batch preparation and production can be realized, and the device has huge market potential and wide application prospects.

The invention belongs to the technical field of motor driving control, and discloses a space vector modulation strategy method for a permanent magnet synchronous motor, which comprises the following steps of: searching a region division and vector arrangement table by using regions in which Vlp and V are positioned to obtain an optimal vector sequence, and arranging vectors based on a principle of eliminating a peak of a CMV and minimizing switching operation times; and finally, calculating the duty ratio of a plurality of effective voltage vectors used for synthesizing the next period according to the amplitude-second balance principle. Compared with a control strategy that only one effective vector or two adjacent effective vectors are used in each control period, the virtual vector synthesized by the method is the same as the reference vector, and common-mode voltage spikes can be eliminated by the method; compared with NSPWM and AZPWM, the method has the advantages that area division and vector sorting are reasonably arranged, so that the switching action times are minimized, the switching loss is reduced, and the inverter efficiency is improved.

The utility model discloses a DC power supply input protection circuit. The transient absorption circuit is used for absorbing transient voltage spike pulse generated by input voltage of the power supply; the voltage stabilizing circuit is used for generating stable voltage when the power supply is input in a wide voltage range; the second voltage division circuit and the power supply output control switch circuit are connected in parallel and are arranged between the power supply input end and the power supply output end of the direct-current power supply, and the first voltage division circuit can divide the stable voltage generated by the voltage stabilizing circuit; the first voltage division circuit is connected with the in-phase end of the comparator to provide reference voltage for the comparator, the second voltage division circuit is connected with the anti-phase end of the comparator to provide input voltage for the comparator, and the comparator can compare the reference voltage with an input voltage signal. When the input voltage is higher than the reference voltage, the output end of the comparator outputs a signal for controlling the switching circuit to close to the power supply. The overvoltage protection circuit is sufficient and accurate in overvoltage protection, can be applied to a relatively wide voltage range, and is low in cost.

The invention discloses a nanosecond steep pulse excitation system and a nanosecond steep pulse excitation method. The nanosecond steep pulse excitation system comprises a high-voltage pulse generation module, a controller, an impedance detection module and a treatment electrode, the high-voltage pulse generation module is used for receiving a control signal monitored by the controller and outputting a high-voltage pulse to the treatment electrode; the impedance detection module comprises a measuring electrode, tissue impedance data are collected through the measuring electrode, and the impedance data are dynamically fed back to the controller; the controller dynamically adjusts parameters of the high-voltage pulse generation module according to impedance data to form closed-loop control, the Marx circuit is optimized, the high-voltage pulse generation efficiency is high, nanosecond-level accurate triggering is achieved through embedded control, effective deposition of high-frequency energy is ensured, transient voltage spikes are reduced, impedance changes are detected in real time through the impedance detection module, and the control precision is improved. The pulse width or amplitude is dynamically adjusted, pulse parameters are adjusted in real time based on impedance changes, and excessive ablation or insufficient treatment is avoided.

The invention provides a compensation output circuit, a driving circuit of a display panel and a display device.The compensation output circuit comprises a hysteresis circuit, a signal amplification circuit and a compensation circuit, and the hysteresis circuit delays first common electrode voltage output by a power management integrated circuit; the first common electrode voltage and the second common electrode voltage are output synchronously, meanwhile, the signal amplification circuit carries out signal amplification on the first common electrode voltage output in a delayed mode and outputs target voltage to the compensation circuit, and the compensation circuit generates compensation voltage according to the target voltage and the second common electrode voltage obtained through feedback. The first common electrode voltage and the second common electrode voltage are synchronously output to the compensation circuit for compensation processing through the hysteresis circuit and the signal amplification circuit, so that generation of voltage spikes and startup splash screen are avoided, and the display effect is improved.

The invention provides a voltage environment self-adaptive adjusting method and system of a plug-in adapter, and is applied to the field of electric data processing. Under-voltage compensation and over-voltage compensation can be automatically performed according to actual voltage conditions through a dynamic voltage compensation mechanism, so that the adapter can still maintain stable output in an extremely low or extremely high voltage environment, and adapter damage caused by abnormal voltage is avoided; meanwhile, key element parameters such as the turn ratio, the magnetic flux density and the saturation current of the transformer are tested, it is ensured that the elements work within the design range, in combination with activation of the active clamping circuit, the problems of voltage spikes and overcurrent can be effectively solved, the service life of the key elements is prolonged, and damage is avoided.

The present application discloses a control method and a power conversion system for a power converter, wherein the control method for the power converter comprises: obtaining an output voltage reference value of the power converter; obtaining an actual output voltage value of the power converter at the current moment; determining the voltage interval in which the actual output voltage value is located according to a preset voltage interval set; obtaining a control error of the current control cycle according to a preset algorithm, an output voltage reference value, and an actual output voltage value corresponding to the voltage interval; controlling the power converter using a PID control algorithm according to the control error; and returning to the step of obtaining the actual output voltage value of the power converter at the current moment until the actual output voltage value meets the preset accuracy requirement. The present application can make the output voltage of the power converter smoothly transition to its reference value when the PID controller parameter configuration is poor, which is beneficial to reducing the voltage spike of the switch tube inside the power converter and improving the robustness of the power converter control system.

The present invention relates to the technical field of electric vehicle charging, and in particular provides a V2G charging pile, a portable fast charger and a charging system. The portable fast charger includes a portable charger, two charging connector assemblies and two quick connection assemblies. The present invention can provide multiple points of real-time and accurate current or voltage data, prevent the system from misjudging as overcurrent or overvoltage due to sudden instantaneous voltage or current fluctuations at a certain point, effectively prevent the misjudgment of overcurrent or overvoltage due to instantaneous voltage or current mutations caused by voltage spikes, current mutations and the like in the power grid, and at the same time, ensure the stability and stability of the charging / discharging plug-in process, reduce deviations or shaking during plug-in, avoid damage or safety risks caused by poor plug-in, and prevent loose or disconnected connections caused by external factors such as vibration and pulling, thereby ensuring the continuity and safety of the charging / discharging process.

The embodiment of the utility model discloses a voltage spike absorption circuit and a whole vehicle power distribution system. The voltage spike absorption circuit comprises a first absorption circuit, a second absorption circuit, a third absorption circuit and an electronic relay module, the first end of the electronic relay module is connected with a first power supply, and the second end of the electronic relay module is connected with a second power supply or a load; the first absorption circuit is connected with the first end of the electronic relay module, the second absorption circuit is connected with the second end of the electronic relay module, and the third absorption circuit is connected between the first end and the second end of the electronic relay module. According to the technical scheme provided by the embodiment of the invention, the electronic relay module is connected with the first absorption circuit, the second absorption circuit and the third absorption circuit, so that when the electronic relay is turned off, the absorption circuits can effectively reduce voltage spikes generated in the circuit, protect other elements in the circuit from being damaged, and prolong the service life of system components.

The utility model belongs to the technical field of flyback switching circuits, and particularly discloses a flyback switching circuit which comprises a transformer T1 and a switching power supply chip U2, the primary side of the transformer T1 is connected with rectified voltage, the primary side of the transformer T1 is connected with a diode D6 and a diode D7 in parallel, the rectified voltage supplies energy to the switching power supply chip U2, and the diode D6 supplies energy to the switching power supply chip U2. A pin 7 of the secondary side of the transformer T1 is connected with a pin 6 of the switching power supply chip U2 through a diode D9 and a resistor R36, and the pin 7 of the secondary side of the transformer T1 is further connected with a pin 5 of the switching power supply chip U2 through a resistor R37. According to the utility model, reverse voltage tips are absorbed through the half-wave rectification filter circuit, jitter frequency control is carried out on the switching power supply chip U2 according to EM I signals, the whole circuit is convenient to stably output voltage, switching loss and current peaks during light load and even no load are reduced, loss of an auxiliary power supply is reduced, and an extra EM I filter device does not need to be provided for the auxiliary power supply.

The disclosure concerns a resonant LLC converter, comprising a transformer comprising a primary side and a secondary side; a primary side circuit comprising primary side switches connected to the primary side of the transformer; a secondary side circuit comprising secondary side switches connected to the secondary side of the transformer; and a control unit configured to control the primary side switches and the secondary side switches; wherein the control unit is configured to perform a steady-state operation where switching frequencies of the primary side switches and of the secondary side switches are controlled to regulate an output voltage of the converter; and the control unit is configured to perform an overshoot control operation where an output voltage spike during a load transient is reduced by setting a control signal for the secondary side switches to low or OFF. The invention also concerns a control method for driving the above-mentioned converter.

The utility model discloses a clamping plate type titanium-based composite anode structure which comprises a composite conductive beam, a conductive connecting plate, a titanium mesh, a titanium structure frame and a titanium bolt, the composite conductive beam is connected with the conductive connecting plate, and the conductive connecting plate is connected with the titanium mesh; the number of the titanium structure frames is two, and a plurality of bolt holes are formed in the titanium structure frames. The titanium bolts penetrate through the bolt holes to clamp and fix the titanium mesh between the two titanium structure frames; and the top end of the titanium structure frame is connected with the composite conductive beam and the conductive connecting plate. According to the clamping plate type titanium-based composite anode structure provided by the utility model, the titanium mesh is clamped and fixed by the two titanium structure frames through the clamping plate type structure, so that the bending deformation of the titanium mesh can be reduced; the condition of voltage increase or short circuit caused by titanium mesh deformation in the electrolysis process is avoided; and the disassembly cost of reutilization of the structural member is reduced.

The present invention belongs to the field of atmospheric pressure glow discharge and relates to a low-temperature plasma processing device controlled by a transverse magnetic field. The device comprises a power supply unit, a discharge unit with a built-in high-voltage spike electrode, an annular ground electrode, and an electromagnetic coil, a gas unit, a gas control unit, a magnetostrictive unit, and a sample unit for holding a treatment liquid or collecting gaseous products processed in the discharge unit. The discharge end of the high-voltage spike electrode is a pointed tip, and the radially inner side of the annular ground electrode is prefabricated with an axially symmetrical cut angle. A magnetic core is provided on the inner surface of the outer cylinder, and the magnetic core includes a first annular magnetic core and a second annular magnetic core. The device improves the efficiency of generating high-energy active particles in the low-temperature plasma by significantly increasing the discharge area. It can either utilize the discharge process of a specific dielectric gas to generate high-energy active particles for subsequent liquid treatment, or directly mix the gas to be treated with the dielectric gas in a certain proportion in the gas unit and then complete the treatment directly in the discharge unit.

The invention discloses a compact single-stage matrix AC-DC power conversion device and a control method thereof. The power conversion device comprises a power module, a switch matrix, a resonant cavity, a rectifying circuit, a first follow current branch and a second follow current branch, the power module is connected with the switch matrix, the resonant cavity is connected with the power module, the switch matrix comprises a first bridge arm and a second bridge arm, the midpoint of the first bridge arm is connected with one end of a primary winding of the resonant cavity, and the midpoint of the second bridge arm is connected with the other end of a secondary winding of the resonant cavity. The midpoint of the second bridge arm is connected with the other end of the primary winding of the resonant cavity, the first freewheeling branch is connected with the first bridge arm in parallel, the second freewheeling branch is connected with the second bridge arm in parallel, and the first freewheeling branch, the second freewheeling branch, at least part of the first bridge arm, at least part of the second bridge arm, the power module and the resonant cavity form a freewheeling channel. Two ends of the rectification circuit are connected with the secondary winding of the resonant cavity. The compact single-stage matrix type AC-DC power conversion device can effectively eliminate voltage spikes and reduce loss.

The utility model discloses a switching power supply and a power converter. The switching power supply comprises a transformer, a controller and a switching circuit, the switching circuit comprises at least two switching tubes which are connected in series; the first end of the primary winding of the transformer is connected with a direct-current source; the second end of the primary winding of the transformer is grounded through at least two switching tubes which are connected in series; a secondary winding of the transformer is used for supplying power to a load; the control end of the switching circuit is connected with the controller; the switching circuit further comprises absorption circuits corresponding to the switching tubes; the first end of the absorption circuit is connected with the drain electrode of the corresponding switch tube, and the second end of the absorption circuit is connected with the source electrode of the corresponding switch tube; the controller controls the on-off state of the at least two series-connected switch tubes. The plurality of switch tubes connected in series can divide the voltage, and the overheating and breakdown of the switch tubes caused by the reflection voltage and the peak voltage are avoided. And each switch tube adopts a switch tube with a common voltage-withstanding grade. And the absorption circuit balances the voltage of each switching tube and absorbs the voltage peak, thereby achieving a voltage-sharing effect.

A method for plasma processing a substrate includes: sustaining a plasma in a plasma processing chamber, the plasma processing chamber including a first electrode and a second electrode, where sustaining the plasma includes: coupling a source signal to the first electrode; and applying a bias signal to the second electrode, the bias signal having a spike waveform including a plurality of bias pulses, each of the bias pulses including a DC base voltage for a base duration and a triangular voltage spike having a rise time from the base voltage to a peak voltage and a fall time from the peak voltage to the base voltage, a sum of the rise time, the fall time, and the base duration including a pulse period, the applying including: independently adjusting the rise time and fall time to obtain a narrow energy spread of a mode at a high modal energy in an ion energy distribution function (IEDF) of an ion flux incident on the substrate, the narrow energy spread including a first width of the high energy mode of the IEDF that is smaller than a second width of the high energy mode of the IEDF obtainable using a rectangular pulse waveform.

Embodiments of this application disclose an inverter apparatus and an inverter apparatus control method. The inverter apparatus includes an inverter circuit and a control unit, and the control unit detects a driving mode of the inverter circuit based on a running state of the inverter circuit. When the inverter circuit outputs reactive power and an output current amplitude is greater than a current threshold, the control unit controls the inverter circuit in a full-bridge two-level bipolar control mode; and in other cases, the control unit controls the inverter circuit in a three-level control mode. This reduces a risk of breaking down horizontal bridge semiconductor switching devices by a voltage spike in an active turn-off process.

A voltage controller (204) detects (604) a voltage spike (244) in an electrical signal received from an electrical power source (208). The voltage controller (204) is implemented using a single-loop control system in a stationary reference frame. The electrical signal includes voltage harmonics caused by a non-linear or unbalanced load (256). The voltage controller (204) includes a phase-compensated harmonic regulator (220) that regulates the voltage harmonics present in the electrical signal and receives a feedback voltage (240) of the single-loop control system. The feedback voltage (240) is a delayed version of an instantaneous voltage (236) of the electrical signal. The instantaneous voltage (236) is sub-transiently stabilized into a steady-state voltage (232) based on the feedback voltage (240). Sub-transiently stabilizing the instantaneous voltage (236) is performed within a single cycle after the voltage spike (244) is detected (604). The steady-state voltage (232) has a total harmonic distortion less than a threshold total harmonic distortion and the steady-state voltage has a balanced sinusoidal waveform.

The invention provides a power module, an electric drive assembly and a vehicle, and the power module comprises a plurality of sub-power modules, and each sub-power module corresponds to one phase; the number of the lining plates is multiple, each lining plate is provided with a reference surface, at least one sub-power module in the multiple sub-power modules is provided with one lining plate, and the sub-power modules are located in the reference surfaces; a plurality of direct current power terminals, the plurality of direct current power terminals and the plurality of lining plates are arranged in a one-to-one correspondence manner, the direct current power terminals are located in the reference surface, and the direct current power terminals are arranged at one ends of the lining plates; the number of the alternating current power terminals is multiple, and the multiple alternating current power terminals and the multiple lining plates are arranged in a one-to-one correspondence mode; and the plurality of capacitors are arranged in one-to-one correspondence with the plurality of lining plates, and the capacitors are located between the sub-power modules and the direct-current power terminals. According to the invention, the problem of how to effectively suppress the voltage spike in the switching process by the power module in the prior art is solved.

The present invention discloses a current-source high-frequency link matrix inverter topology with soft switching, comprising a sequentially connected power supply network, a current-source H-bridge, a series resonant tank, a high-frequency transformer, a matrix converter, a CL filter, and a load. The present invention uses series resonance to match the leakage inductance current of the high-frequency transformer with the DC-side input current, thereby avoiding large voltage spikes on the primary side of the high-frequency transformer and achieving zero-current switching of the current-source H-bridge. The present invention is also well-suited for high-frequency transformers with large leakage inductance. Furthermore, the proposed decoupling-based SPWM and SVM modulation methods for current-source matrix inverters feature mixed high- and low-frequency modulation, enabling safe commutation, effectively reducing the switching frequency of the matrix converter, and providing soft switching conditions for all switches in the matrix converter.