989 results about "Full bridge" patented technology

The invention relates to the technical field of hybrid inverters, and discloses a hybrid inverter supporting reactive compensation and a control method thereof, and the hybrid inverter comprises a DC input unit, a three-phase full-bridge inversion unit, a grid-connected switching unit, a signal acquisition unit and a digital control unit. The direct current input unit comprises a photovoltaic interface, a battery interface and a direct current bus and is used for converging photovoltaic and energy storage electric energy; the three-phase full-bridge inversion unit is composed of a power device and an LCL filter and converts direct current into alternating current. The grid-connected switching unit comprises a static switch and an isolation transformer and is used for controlling power grid connection; the signal acquisition unit detects voltage and current signals; and the digital control unit judges a grid-connected mode or an off-grid mode according to the signal, calculates a reactive current reference value and generates a PWM (Pulse Width Modulation) control signal so as to realize reactive compensation control in the grid-connected mode and the off-grid mode. According to the invention, reactive power compensation capability is provided in both grid-connected and off-grid operation modes, and stable operation of the inverter in various working conditions is ensured.

The invention belongs to the technical field of LLC resonant converters, and provides an efficiency optimization method of a wide-range LLC resonant converter. The method comprises the following steps: firstly, obtaining a full-bridge LLC resonant converter topology and a working area; secondly, establishing a full-time-domain equation of the full-bridge LLC resonant converter topology in an inductive low-gain output working area, and setting boundary conditions of the full-time-domain equation; then, on the basis of boundary conditions, switching tube turn-off current is calculated, and the switching tube turn-off current is combined with switching tube switching frequency to be represented as switching tube turn-off loss characteristic quantity related to the inductance coefficient, the quality factor and the normalized frequency; then, carrying out characteristic analysis on the turn-off current of the switching tube, and setting constraint conditions; and finally, on the basis of the set constraint conditions, the optimal values of the inductance coefficient, the quality factor and the normalized frequency are calculated by combining a differential evolution algorithm, so that the turn-off loss of the switching tube is minimum. According to the invention, the transmission efficiency in a low-gain mode and a high-gain mode can be improved, and the turn-off loss of the switching tube is reduced.

A control method and system for a resonant converter. The control method for a resonant converter comprises: in each switching cycle, determining a target power value on the basis of an input power control amount and a compensation amount corresponding to a bridge leg (S101); on the basis of the target power value, an input voltage, circuit parameters of the resonant converter, and the current operating mode of a full-bridge inverter module, determining a target slope control amount corresponding to a counter which corresponds to a switching transistor (S102); determining a comparison threshold on the basis of the target slope control amount, the current count value of the counter which corresponds to the switching transistor, and a DC bias voltage of a resonant capacitor corresponding to the current operating mode, wherein the counter starts counting using the DC bias voltage as an initial value in each switching cycle until the actual voltage of the resonant capacitor is equal to the comparison threshold (S103); and determining a control signal on the basis of the actual voltage of the resonant capacitor and the comparison threshold, and controlling the switching transistor on the basis of the control signal (S104).

The invention discloses an isolation type split-phase inverter circuit and a control method thereof. The isolation type split-phase inverter circuit comprises an isolation DC / DC module circuit and a power frequency rectification module circuit. The isolation DC / DC module circuit comprises an input-side full bridge, a three-end transformer and two output-side circuits, an input-side winding of the three-end transformer is connected with a midpoint of a bridge arm of the input-side full bridge, and the input-side full bridge is connected with a filter capacitor C1 in parallel; two output side windings of the three-end transformer are respectively connected with corresponding output circuits through a resonance network circuit, the two output circuits are connected to a power frequency rectification module circuit through filter capacitors C4 and C5, and the negative electrode of the first output circuit and the positive electrode of the second output circuit are connected to form an interface N; the power frequency rectification module circuit comprises a rectification full-bridge circuit, and an interface L1 and an interface L2 are obtained after rectification. Through cooperative control of direct transmission of integrated topology and voltage signals, a complex parameter matching algorithm is not needed, breakthrough in structure simplification, energy conversion efficiency, control convenience, cost control and safety is achieved, and the method is suitable for various power conversion scenes.

The invention discloses a non-contact power supply three-stage control system based on series redundancy, and belongs to the field of non-contact power supply control. Comprising a power correction module, a voltage conversion module, a full-bridge inversion module, a cooperative control module, an analysis adjustment module, a monitoring switching module, a simulation maintenance module, a communication security module, a remote interaction module, an energy efficiency optimization module and a diagnosis recording module. High conversion efficiency can be dynamically kept under different loads and working conditions, energy loss is reduced, electric energy quality is remarkably improved, damage and misoperation under abnormal working conditions are prevented, high-reliability continuous power supply is achieved, PID parameters can be dynamically adjusted or direct control quantity can be generated, the system adapts to complex and changeable operating environments, and failure rate and shutdown loss are reduced.

The invention provides a control structure of a rope-driven dexterous hand, the rope-driven dexterous hand and a robot, and relates to the field of robotics.The control structure comprises a master-slave driver, the master-slave driver comprises a master control chip and a plurality of slave control chips connected with the master control chip, each slave control chip is integrated with an FOC algorithm hardware acceleration module, and the FOC algorithm hardware acceleration module is connected with the master control chip. Wherein the number of the slave control chips is equal to that of finger driving motors of the rope-driven dexterous hand, the slave control chips and the finger driving motors are in one-to-one correspondence, and each slave control chip is connected to the corresponding finger driving motor through one three-phase full-bridge driver.

A triple-active bridge (TAB) converter and methods to optimize the same is disclosed. The TAB converter includes a high-frequency three-winding transformer and three active full bridges, each coupled to the high-frequency transformer through a different passive network. The converter also includes a centralized controller providing gating pulses to semiconductor switches within the active full bridges, a power pulsating buffer (PPB) configured to reduce capacitor requirements on the DC port, and an unfolder stage to convert rectified AC voltage to a pure sine wave. The centralized controller may optimize performance by varying at least one of a switching frequency, a duty cycle of bridge voltages, and a phase shift between bridge voltages. The PPB may include a buck active power decoupler with a half-bridge, inductor, and capacitors, and also a primary full bridge and a power transfer impedance block.

The single-phase bidirectional single-stage isolation matrix converter comprises a pre-stage circuit and a post-stage circuit, and the pre-stage circuit comprises an LC filter on the power grid side, a pre-stage single-phase matrix conversion circuit and an LLC resonance circuit with a high-frequency transformer; the post-stage circuit comprises a post-stage conversion circuit and an output filter capacitor; the front-stage single-phase matrix conversion circuit comprises four bidirectional switch assemblies of a full-bridge structure. Each bidirectional switch assembly comprises two unidirectional controllable MOS tubes which are reversely connected in series, one end of each bidirectional switch assembly is connected to an L line or an N line of a power grid, and the other end of each bidirectional switch assembly is connected to the LLC resonance circuit. The rear-stage conversion circuit comprises a bidirectional MOS (Metal Oxide Semiconductor) tube bridge circuit and three high-frequency transformer secondary windings which are in triangular connection or star connection; and two end points of each secondary winding are respectively connected to the upper MOS tube and the lower MOS tube of the corresponding bridge arm and then are connected to output positive and negative ends. The converter has the advantages of high power density, low current harmonic, high power factor and the like, and is small in size, strong in anti-interference capability, wide in buck-boost range, and safe and reliable in commutation.

The invention relates to the technical field of high-voltage direct-current transmission, and particularly provides an LCC-full-bridge MMC series light HVDC converter station control method, which comprises the following steps: a rectification side of a power grid commutation converter adjusts direct-current power through an outer ring and an inner ring adopts linear trigger angle control to generate a trigger pulse; transformer tap adjustment is supplemented; on the basis of the established stable direct current system, an inversion side selects a minimum trigger angle as a control signal by coordinating three control rings of a turn-off angle, direct current voltage and direct current to form a control system; the full-bridge modularized multi-level converter is switched to a power grid following and network construction control mode according to power grid conditions; and when a direct current fault is detected, setting the trigger angle of the commutation converter of the power grid to be 90 degrees and switching the full-bridge modular multi-level converter to an STATCOM mode, thereby realizing direct current fault ride-through without locking the converter. According to the invention, direct-current fault rapid ride-through of the non-locking converter is realized.

The application discloses a single-stage three-phase high-frequency isolation type conversion circuit and a closed-loop control method. The single-stage three-phase high-frequency isolation type conversion circuit generates a modulation ratio and a vector angle on the basis of synchronous control of a fundamental wave and a harmonic wave of a three-phase current based on three-phase voltage of a three-phase three-wire power grid and the three-phase current of the three-phase three-wire power grid, generates a primary side driving signal and a secondary side driving signal according to the modulation ratio and the vector angle, the primary side driving signal is used for driving a three-phase matrix converter, and the secondary side driving signal is used for driving a full-bridge inverter. The fundamental wave and the low-frequency harmonic wave of the power grid current can be synchronously controlled, low-order harmonics can be eliminated, the sinusoidal degree of the grid-connected current can be improved, and thus the quality of the power grid current and total harmonic distortion can be improved.

A method for controlling a DC-DC converter having a primary-side full-bridge, a secondary-side full-bridge and a transformer, which is arranged between the primary-side full-bridge and the secondary-side full-bridge, wherein the method includes controlling a diagonal branch in the secondary-side full-bridge while the primary side of the transformer is short-circuited by means of the primary-side full-bridge and controlling a diagonal branch in the primary-side full-bridge.

The invention provides a method for reducing output voltage overshoot of a full-bridge DCDC converter, relates to the field of converters, and solves the technical problem that the input voltage of an isolated full-bridge DC-DC converter is unstable. The method comprises the following steps: acquiring an input voltage signal, an output voltage signal and a load current signal of the converter to form an original signal; based on the preprocessed input voltage signal, the working state of the converter is judged by combining a dynamic threshold value and a critical condition for triggering open loop of a control loop, and when it is judged that the input voltage drops, a reduced output voltage reference value is generated. When the input voltage is normal, the output voltage reference value is kept at a rated value. The reduced output voltage reference value or the voltage reference value is kept at a rated value and the preprocessed output voltage signal are subtracted, and an error signal is obtained. And taking the preprocessed load current signal as a feedforward quantity to generate a PWM driving signal. The method and the device are used for scenes with high voltage stability requirements.

The invention discloses a circuit for a high-voltage direct-hanging electric heater, and the circuit comprises a high-voltage pre-charging module which is used for inputting high-voltage alternating current and suppressing the surge current of the high-voltage alternating current; the full-bridge rectifier module is used for converting the high-voltage alternating current into direct current; the conversion and control module is used for isolating and converting the direct current and outputting rated voltage and required power of the electric heater based on the direct current, the full-bridge rectifier module is connected with the high-voltage pre-charging module and the conversion and control module, and the output end of the conversion and control module is connected with the electric heater.

The invention provides a high-power rectification resonance control method and system for a quick charger, relates to the technical field of rectification resonance, and aims to obtain direct-current bus voltage, adjust output power through frequency modulation of a full-bridge LLC resonant converter, and perform voltage stability control adjustment in combination with feedback current data. Charging curve data analysis is carried out to acquire charging key nodes and resonance frequency nodes, device state data acquisition and analysis are carried out, a frequency conversion control loop is constructed, resonance frequency adjustment is carried out, after adjustment is completed, abnormal nodes are identified and combined analysis is carried out, optimal parameters of each load segment are acquired, and voltage fluctuation data are acquired. The method comprises the steps of carrying out fluctuation influence analysis, carrying out fluctuation suppression by adjusting a switching frequency and phase shift angle combination of a full-bridge LLC resonant converter, carrying out calculation through the full-bridge LLC resonant converter to obtain an equivalent voltage control instruction, carrying out mode buffer switching and obtaining mode control switching data, and realizing rectification resonance accurate control of the charger.

The invention discloses a multi-mode electric energy conversion system and a method thereof, and relates to the technical field of power electronic conversion, the system comprises a signal acquisition module, a mode discrimination module, a soft switching control module and a switching execution module, the signal acquisition module acquires an input voltage, an output voltage, a load current and a switching tube temperature signal; the mode judgment module determines a target working mode according to an input voltage interval and a load rate interval, dynamic switching among a full-bridge phase shift mode, a half-bridge mode and an interleaving parallel mode is achieved, the soft switching control module generates a soft switching time sequence signal, a main power switch tube is enabled to achieve zero-voltage switching, and the main power switch tube is enabled to achieve zero-voltage switching. The switching execution module adopts a current ramp control strategy to execute mode switching, the switching time is less than 5ms, the voltage fluctuation is less than 3%, and the global efficiency is greater than 95% and the peak efficiency is greater than 98% under the conditions of wide voltage and wide load.

A charging device may be configured for installation in an electric vehicle for charging a traction battery of the electric vehicle. The charging device may include a wireless power transfer (WPT) unit, an on-board charging (OBC) unit, a rectifier unit configured to convert an alternating current into a direct current, and / or an output configured to connect to the traction battery of the electric vehicle. The rectifier unit may include three rectifier branches of rectifier switching elements. A first rectifier branch and a second rectifier branch may be connected to the OBC unit and may form a full-bridge rectifier configured to rectify an alternating current supplied via the OBC unit. The second rectifier branch and the third rectifier branch may be connected to the WPT unit and may form a full-bridge rectifier configured to rectify an alternating current supplied via the WPT unit.

The invention belongs to the technical field of inverters, and discloses a three-phase four-leg optical storage converter and a control method and application thereof. According to the three-phase four-bridge-arm optical storage converter, the boost inductor is connected to the midpoints of the three-phase bridge arms through the three switching tubes respectively, device multiplexing of a bidirectional Buck / Boost converter and a three-phase full bridge is achieved, the converter can achieve boost / buck and inversion control at the same time, and then single-stage power conversion among the photovoltaic port, the storage battery port and the load port is achieved; the conversion efficiency and the integration level are improved, and the system cost is low. According to the converter, an SPWM and PWM hybrid control strategy is adopted, the high voltage utilization rate which is the same as that of traditional 3D-SVPWM control is obtained, but a large amount of sector judgment and vector selection are avoided, the calculation burden is remarkably reduced, and the system control complexity is reduced.

The invention discloses a full-bridge synchronous rectification circuit, which realizes self-driving of two PMOS (P-channel Metal Oxide Semiconductor) tubes of a full-bridge synchronous rectification structure through a gate-source clamping self-driving module, and controls gate-source voltages of the two self-driving PMOS tubes when an output voltage Vo is high, so that the gate-source voltages of the two self-driving PMOS tubes are always clamped in a voltage withstanding range of the two self-driving PMOS tubes, and the problem of overvoltage breakdown is solved. The working voltage range is expanded, and the circuit reliability is improved. In addition, the gate source clamping self-driving module can release excessive energy when the voltage of the rectification output end abnormally drifts high, the load regulation rate can be optimized, and the problem that the output abnormally drifts high can be relieved or avoided.

The invention discloses a self-powered synchronous rectification active bridge, a control method thereof and a power supply system. An active bridge belongs to the technical field of power electronics and comprises a full-bridge rectifying circuit composed of four switching devices, a self-powered circuit taking electricity from an alternating current input end and a control circuit. And the control circuit detects an alternating current input phase, generates a driving signal with dead time, and controls the switching device to be alternately conducted in positive and negative half cycles to realize synchronous rectification. The self-powered circuit is preferably a charge pump, and an external auxiliary power supply is not needed. Through integration of synchronous rectification, self-power supply and intelligent control, the rectification efficiency and the power density are remarkably improved, a traditional rectifier bridge is conveniently and directly replaced through the modular design, and the high-power rectifier bridge can be widely applied to high-power scenes.

An audio amplifier that implements current mode control without the use of an explicit or separate current mode sensor is disclosed. The audio amplifier may include a pair of feedback loops that provide current from a node located before an inductor of an output filter and current from a node located after the inductor of the output filter to an integrator circuit. The integrator circuit may be formed from existing circuitry of the audio amplifier controller. Thus, current mode control can be implemented without a separate current mode sensor. Further, the audio amplifier can be implemented as a half bridge or as a full bridge design without increasing the number of operational amplifiers compared to the half bridge.

The utility model relates to the field of testing, in particular to a testing device and a testing system, in the testing device, a first load end of a phase-shifted full-bridge unit is connected to a first end of a primary winding of each transformer, and a second load end of the phase-shifted full-bridge unit is connected to a second end of the primary winding of each transformer; the phase-shifted full-bridge unit is used for converting direct-current voltage output by the direct-current power source into alternating-current voltage, secondary windings of all the transformers are connected to the first testing end and the second testing end of the corresponding testing circuit, and the first testing end and the second testing end are used for outputting testing signals to test the corresponding testing circuit. The positive feedback end of each test circuit is connected to the second end of the feedback module, and the negative feedback end of each test circuit is connected to the negative electrode of the DC power supply. According to the embodiment of the utility model, the aging test can be carried out on a plurality of test circuits, and the device has the characteristics of low equipment complexity and cost.

The application discloses a wireless charging circuit for a UAV, a movable electric energy carrier and the UAV. The circuit comprises an electric energy transmitting sub-circuit and an electric energy receiving sub-circuit, the electric energy carrier is configured to perform wireless charging on a power supply of the UAV through electric energy transmission between the electric energy transmitting sub-circuit and the electric energy receiving sub-circuit; the electric energy transmitting sub-circuit comprises a boost converter and a full-bridge inverter to control the operation efficiency of the wireless charging circuit; and the electric energy receiving sub-circuit comprises a receiving switch tube and a receiving diode arranged in series to control the wireless charging circuit to output electric energy at a constant voltage or a constant current to the power supply. The application can switch and adjust the charging mode for the UAV based on the control of the PWM signal on the basis of using the electric energy carrier to perform wireless charging on the UAV in real time, can maximize the operation efficiency of the whole wireless charging circuit and reduce the control complexity of the wireless charging circuit.

The application provides a high-power low-voltage starting rectifying device, which comprises a three-phase input power distribution and filter unit, a three-phase 12-pulse rectifying unit, a DC / DC unit I, a DC / DC unit II and a control module; the three-phase input power distribution and filter unit is connected with the three-phase 12-pulse rectifying unit, the three-phase 12-pulse rectifying unit adopts a differential connection triangle autotransformer 12-pulse rectifying technology and is connected with the DC / DC unit I and the DC / DC unit II respectively; the DC / DC unit I adopts a three-channel staggered parallel phase-shift full-bridge technology, and the DC / DC unit II adopts a single-channel phase-shift full-bridge technology; the control module is connected with the DC / DC unit I and the DC / DC unit II respectively; the control module is used for controlling the DC / DC unit I and the DC / DC unit II to convert direct current voltage and supply a hovercraft gas turbine. The hovercraft gas turbine can be started.

The invention belongs to the technical field of key power supply conversion in an aviation airborne starting power converter, and discloses a novel matrix LLC secondary side resonant topology. On the basis of an LLC resonant topology circuit, a resonant cavity is placed on the secondary side of a transformer, a matrix transformer with the primary side connected in parallel and the secondary side connected in series is adopted, and the matrix transformer comprises n parallel H-bridge inversion units on the low-voltage side, a high-frequency matrix transformer, the LLC resonant cavity on the high-voltage side and a full-bridge uncontrollable rectification circuit. The matrix transformer is composed of n transformer units, primary sides of which are connected in parallel and secondary sides of which are connected in series. A primary winding of each transformer unit is connected with the H-bridge DC-AC inverter circuit. According to the matrix LLC secondary side resonant topology, by controlling the switching frequency of the H-bridge power MOS tube, square wave signals with different frequencies are obtained, the series impedance of the resonant capacitor and the resonant inductor is changed, the partial voltage at the two ends of the excitation inductor is adjusted, gain control over the resonant cavity is achieved, and the purpose of adjusting the output load voltage is achieved.

A system and method for reducing common mode (CM) conducted electromagnetic interference (EMI) noise of a full bridge (FB) resonant converter is presented. The FB resonant converter comprises a bridge circuit, a transformer, a resonant cavity and a rectifier. The transformer has a primary winding and a secondary winding which are magnetically coupled, the primary winding being divided into a first primary winding segment and a second primary winding segment, respectively having winding turns P1 and P2. The resonant cavity is composed of a capacitor and an inductor and is electrically connected between the first and second primary winding segments. The secondary winding is electrically connected with the rectifier. The bridge circuit includes two or more switches with duty cycle control connected to the primary winding in series with the first and second primary winding segments.

The invention discloses a large-capacity energy storage converter based on a DAB-ANPC cascade architecture, which comprises a pre-stage DC-DC converter and a post-stage DC-AC inverter which are cascaded, the pre-stage DC-DC converter adopts a dual active bridge (DAB) circuit and comprises a primary and secondary full bridge, a high-frequency isolation transformer, a series inductor and a blocking capacitor, and electrical isolation and wide voltage input are realized; the back-stage DC-AC inverter is a three-phase three-level active neutral point clamp (ANPC) topology, each phase of bridge arm comprises six full-control switches, loss is balanced through the clamp switches, and the output end of the back-stage DC-AC inverter is connected with the LCL filter. According to the invention, DAB power transmission is controlled and adjusted through single phase shift, and an ANPC switch tube conduction time sequence is dynamically allocated by adopting stacked carrier SPWM modulation, so that the problems of electrical isolation and wide voltage can be solved, and a new energy fluctuation scene is compatible; the device loss is balanced, local overheating is avoided, and the system efficiency and reliability are improved; soft switching and LCL filtering are cooperated, so that the switching loss and harmonic interference are reduced, and the cost is reduced; bidirectional energy flow is supported, and the charging and discharging requirements of an energy storage power station are met.

This disclosure presents an embodiment of a power supply device for a submarine data center. One specific embodiment of the power supply device includes a pre-stage voltage regulator / conversion component, a post-stage DC-DC converter component, and a combined protection circuit. The pre-stage voltage regulator / conversion component includes several parallel single-group voltage regulator branches, each branch connected in series with a varistor and a color-coded resistor. A thin-film capacitor is connected in parallel to the output terminal of the pre-stage voltage regulator / conversion component. The post-stage DC-DC converter component, electrically connected to the pre-stage voltage regulator / conversion component, includes at least two sets of full-bridge DC synchronous rectifier circuits. The combined protection circuit includes a pre-stage combined protection circuit, a post-stage active voltage clamping circuit connected in parallel to the output side of the post-stage DC-DC converter component, and a rectifier diode bridge connected between the constant current input port and the pre-stage voltage regulator / conversion component. The pre-stage combined protection circuit is connected in series to the input side of the rectifier diode bridge. By connecting multiple voltage regulator branches in parallel and combining them with the combined protection circuit, ripple is reduced. This embodiment can improve the power supply stability of the power supply device.

The invention discloses a current converter, a control method and a related product. The converter comprises a three-phase full-bridge circuit and a controller. A direct current first end of the three-phase full-bridge circuit is used for connecting a direct current positive electrode, a direct current second end of the three-phase full-bridge circuit is used for connecting a direct current negative electrode, and a three-phase alternating current end of the three-phase full-bridge circuit is used for connecting a converter transformer; wherein the upper bridge arm and the lower bridge arm of each phase in the three-phase full-bridge circuit respectively comprise a converter valve; the controller is configured to obtain a turn-off interval of a target converter valve, the target converter valve is allowed to be turned off actively in the turn-off interval, and the target converter valve comprises a converter valve in any upper bridge arm or any lower bridge arm; and under the condition that the converter is abnormal, controlling the target converter valve to prohibit active turn-off in the turn-off interval. In the embodiment of the invention, under the condition that the converter is abnormal, the target converter valve is controlled to be prohibited from being turned off actively in the turn-off interval corresponding to the target converter valve, so that the internal turn-off stress of the converter valve is reduced, and the operation safety of the converter valve is improved.

The present specification relates to the technical field of power electronics, and particularly relates to a multi-element heterogeneous hydrogen production power supply and a control method. The power supply comprises a main branch and an auxiliary branch. The main branch comprises a first rectifier circuit and a Buck converter. An input end of the first rectifier circuit is connected with a first output winding of a transformer, an output end of the first rectifier circuit is connected with an input end of the Buck converter, and an output end of the Buck converter is connected with a first end of a DC bus. The main branch is used for providing steady-state power. The first rectifier circuit is an uncontrolled rectifier circuit. The auxiliary branch comprises a second rectifier circuit and a full-bridge circuit. An input end of the second rectifier circuit is connected with a second output winding of the transformer, an output end of the second rectifier circuit is connected with an input end of the full-bridge circuit, and an output end of the full-bridge circuit is connected with the first end of the DC bus. The auxiliary branch is used for transmitting fluctuating power or AC excitation. The embodiments of the present specification can balance between steady-state high efficiency and dynamic fast response.

The invention provides a switching power supply LLC interleaving current sharing control system and method. The system comprises a switching power supply conversion circuit, a controller and a logic operation circuit. Wherein the controller is used for obtaining driving signals of a plurality of switch tubes in the first full-bridge resonant conversion branch and the second full-bridge resonant conversion branch according to an output voltage set value and an output current and voltage sampling value of the interlaced full-bridge LLC resonant converter module; the driving signal is used for controlling the working state of the switching tube so as to realize current sharing of the first full-bridge resonant conversion branch and the second full-bridge resonant conversion branch. According to the current value sampled by the two branches, the current-sharing pulse which only affects the turn-off signal of the switching tube can be generated, in the current-sharing adjusting process, the deviation of 90 degrees of MOS tube driving at the same position of the two resonant full bridges can be maintained without complex setting of a controller or addition of an additional complex circuit, and the current-sharing effect of the two resonant full bridges is improved. And a good effect of small interleaving parallel output ripple is realized.