568 results about "Rectifier" patented technology

The present disclosure relates to a kind of direct current transformer, direct current transformer includes: transformer circuit, inverter circuit, rectifier circuit and resonance circuit;The direct current side of inverter circuit is connected with direct current input port, the alternating current side of inverter circuit is connected with the primary side of transformer circuit;The alternating current side of rectifier circuit is connected with the secondary side of transformer circuit, the direct current side of rectifier circuit is connected with direct current output port;Resonance circuit includes multiple resonance modules, the alternating current side of inverter circuit is connected with the alternating current side of rectifier circuit through multiple resonance modules and transformer circuit;Resonance module includes first capacitor, resonance module is used to control the input or cut-out of first capacitor.The present disclosure can simulate the voltage outputted when direct current transformer adopts different capacitance resonant capacitor, so as to ensure that direct current transformer does not need to set resonant capacitor, can satisfy the realization condition of resonant soft switching in different working condition scene, and then make the switching device in inverter circuit and rectifier circuit can realize soft switching.

The utility model relates to a kind of compressor inverter overcurrent protection circuit and air conditioner, belong to air conditioning technical field, including rectifier unit, sampling resistance, main control chip, overcurrent protection control switch, fault state self-locking maintenance switch, operational amplifier and voltage comparator.Sampling resistance gathers DC bus voltage signal, after amplification by operational amplifier, it is transmitted to the analog-digital conversion pin and voltage comparator of main control chip.Signal is compared with preset threshold by voltage comparator, low level is output when over threshold, makes overcurrent protection control switch open, rectifier unit is disabled;While fault state self-locking maintenance switch is turned on, and fault pin is locked as low level, realizes overcurrent protection and self-locking.The circuit cooperates by hardware and software, quickly responds overcurrent fault and prevents false restart, improves the security and reliability of air conditioning system.

The present invention provides a plasma processing device for efficiently performing plasma processing. This plasma processing device includes a chamber, a substrate support part disposed in the chamber and including a lower electrode, an upper electrode disposed above the substrate support part, an RF signal generator electrically connected to the upper electrode or the lower electrode and configured to generate an RF signal for generating plasma in the chamber, a voltage signal generator electrically connected to the lower electrode and configured to generate a voltage signal having a voltage pulse sequence, a rectifier element electrically connected between a ground potential and the upper electrode, and a voltage phase adjustment element electrically connected, between the ground potential and the upper electrode, in series with the rectifier element.

The invention relates to a circuit board (100), a transformer (50), a microwave generator (1000), and a home appliance, wherein the circuit board (100) is used in the microwave generator (1000), and the circuit board (100) comprises a substrate (10) and a power device (20), the power device (20) includes an integrated rectifier bridge stack and an insulated gate bipolar transistor, and the power device (20) is provided on the substrate (10).

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 present disclosure provides a method for context-aware circuit design for a wearable device. The method includes determining a peak power requirement at a selected operating voltage for a rectifier circuit to be coupled between an antenna and system circuitry of the wearable device, the peak power requirement is based on a distance (d) between the wearable device and a power transmitter; determining a real value of at least on real circuit component of the rectifier circuit based on the peak power requirement; and determining a reactive value of at least one reactive component of the rectifier circuit based on the peak power requirement.

A power supply circuit and a power supply device, and the power supply circuit includes a bridge switching circuit, a transformer, a resonant circuit, a rectifier circuit. The bridge switching circuit, the transformer, the resonant circuit, and the rectifier circuit are sequentially connected in series. The resonant circuit includes an induction coil connected in series between the transformer and the rectifier circuit. In the case that the inductive coil is connected in series in the circuit, the inductive coil can participate in conductive charging as an inductor in the resonant circuit. Further, the inductive coil can also receive the inductive voltage wirelessly transmitted by the external circuit through electromagnetic induction, and the inductive voltage can be transmitted to the load through the rectifier circuit to achieve inductive charging.

This invention relates to the field of circuits, specifically disclosing a semi-bridgeless PFC circuit, a power supply system, a computer, and its operating method. The circuit eliminates the two diodes connected to the reference potential in a traditional rectifier bridge, using a first switching transistor, a second switching transistor, their parallel diodes, and an inductor to form a current loop, reducing conduction and switching losses. The source of the switching transistor shares a common ground with the negative terminal of the DC output, eliminating the need for isolation between drive and voltage sampling, thus simplifying the design. Furthermore, the semi-bridgeless PFC circuit can integrate an intelligent enable control module. This module continuously monitors the power stage status and controls the release of the original drive signal based on safety logic, achieving proactive safety protection. This solution improves efficiency and reliability while using common silicon-based devices, and also reduces the complexity and cost of existing power-saving circuits.

This application discloses a power supply circuit based on a three-phase power supply, and a method for simultaneously achieving power factor tracking and dynamic boost / buck conversion. The power supply circuit includes an information acquisition module and a power supply circuit unit, the power supply circuit unit includes three circuit groups formed by three phases connected to a three-phase power supply, and a control center for controlling the operating state of the three circuit groups. Each circuit group includes an input rectifier module, inductor, capacitor, switch and its controller, transformer, and output half-wave rectifier module. The output terminals of the three circuit groups included in the power supply circuit unit are connected in parallel or in series to solve the ripple problem and improve power conversion efficiency. The aforementioned power supply circuit adjusts the peak value of the input current at a high frequency, further adjusting the switching frequency and duty cycle, and controlling the charging and discharging time of the inductor to achieve power factor tracking, while simultaneously enabling dynamic adjustment of boost and buck voltage to meet load demands, effectively reduce costs, have low energy loss, and have high power conversion efficiency.

The present invention provides an oxide film removal apparatus that can uniformly remove the oxide film from a wafer in the circumferential direction and suppress the consumption of etching gas. [Solution] An oxide film removal apparatus comprising an etching chamber, a table on which a wafer having an oxide film on its lower surface is placed, a gas supply unit that supplies etching gas toward the ceiling of the etching chamber, and a gas discharge unit, wherein the etching gas is brought into contact with the oxide film to remove it, the apparatus comprising a rectifier plate that partitions the space between the ceiling and the table in the vertical direction, the rectifier plate having a group of openings through which the etching gas passes, the group of openings consisting of a plurality of openings arranged in a two-dimensional periodic arrangement pattern so as to overlap with the wafer, the rectifier plate having an opening group forming region where the group of openings is formed, and a peripheral region provided around the entire circumference outside the opening group forming region to block the downward flow of the etching gas, wherein the oxide film removal apparatus comprises an etching chamber, a table on which a wafer having an oxide film on its lower surface is placed, a gas supply unit that supplies etching gas toward the ceiling of the etching chamber, and a gas discharge unit, wherein the oxide film removal apparatus comprises an etching plate that partitions the space between the ceiling and the table in the vertical direction, the group of openings consists of a plurality of openings arranged in a two-dimensional periodic arrangement pattern so as to overlap with the wafer, and the rectifier plate has an opening group forming region where the group of openings is formed, and a peripheral region provided around the entire circumference outside the opening group forming region to block the downward flow of the etching gas.

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.

This invention provides a charge-trapping type two-dimensional horizontal homojunction rectifier and its fabrication method, relating to the field of semiconductor electronics technology. It enables p-doping and n-doping of bipolar two-dimensional tungsten diselenide using graphodyne and a silicon dioxide insulating layer under a positive gate electric field. The resulting p-n junction achieves a large rectification ratio and stable rectification performance. This rectifier simultaneously performs n-type and p-type doping on the two-dimensional tungsten diselenide, forming a p-n homojunction in the horizontal direction. This allows the output current to exhibit high and low levels depending on the polarity of the input drain-source voltage, thus achieving the rectifier function. The rectifier achieves p-type and n-type doping under the influence of a positive gate electric field applied by the silicon gate electrode, through simultaneous contact between a portion of the two-dimensional tungsten diselenide with the graphodyne film and the silicon dioxide insulating layer, forming a homojunction. The technical solution provided by this invention is applicable to the rectification process.

The utility model discloses a kind of internal electronic device partition installation type frequency converters, its shell is separated into left side chamber, middle air duct and right side chamber by left, right partition, left side chamber sets up rectifier module group and direct current contactor, right side chamber sets up drive board and IGBT module group, air duct installs radiator, capacitor group transversely penetrates air duct and is fixed between left, right side partition, realize that rectifier module group and IGBT module group share radiator;Shell top is equipped with protective piece and receives control panel, inlet group external fan group brings in airflow and carries away heat.The utility model concentrates high heating element in air duct both sides by partition installation, utilizes shared radiator and fan group to realize high-efficiency heat dissipation, avoid heat interference;Control panel is independently laid in top protective piece, and optimization space utilization rate;The utility model is in guaranteeing heat dissipation performance, through structure optimization makes overall layout compact, reduce the volume of frequency converter, it is favorable to reduce cost.

The application relates to a critical conduction mode control method of a totem-pole PFC converter, which utilizes energy equivalence to determine the resonance process of inductor current at switching commutation, carries out totem-pole Boost inductor current value estimation, and on this basis, utilizes a current zero-crossing point prediction algorithm to calculate the turn-on and turn-off time to generate corresponding active tube-synchronous rectifier tube commutation dead time T d,f , synchronous rectification conduction time T SR , rectifier tube-active tube commutation dead time T d,r ; the PWM drive signals of high-speed switching tubes Q1 and Q2 are generated by T on , T d,f , T SR , T d,r ; the power frequency drive signals of low-speed switching tubes Q3 and Q4 are generated by comparing the input alternating voltage v ac with a hysteresis comparison loop and 0. The method can effectively get rid of the dependence on a current zero-crossing detection circuit and a current sensor, reduces the cost and improves the system stability.

The application relates to a commercial power conversion circuit, method, device and storage medium. The commercial power conversion circuit comprises a rectifier circuit, a control circuit and an open circuit; an input end of the rectifier circuit is used for being connected with a commercial power grid, and an output end is connected with a first end of the open circuit; a second end of the open circuit is used for being connected with an electronic device, and a control end is connected with the control circuit; the control circuit is used for acquiring a working voltage of the electronic device and a rectified voltage output by the rectifier circuit; and the control circuit is further used for controlling the open circuit to conduct the connection between the rectifier circuit and the electronic device according to the working voltage and / or the rectified voltage. The commercial power conversion circuit realizes efficient power supply in a low-voltage section. Meanwhile, compared with a traditional technical solution, the commercial power conversion circuit does not need an auxiliary winding, and a power supply low-voltage section is a fixed value set according to the demand of the electronic device, so that the circuit is further simplified, the cost is reduced, and the circuit reliability is improved.

The utility model relates to intelligent body temperature measurement technical field, especially a wearable intelligent body temperature measurement device, including bracelet body and watchband, the bracelet body includes the shell, the chamber is opened in the shell, be equipped with PCB board in the chamber, integrate rectifier circuit, super capacitor, lithium cell and communication module on the PCB board, be equipped with heat power generation unit below the chamber, the output end of heat power generation unit is connected to the input of rectifier circuit, the output of rectifier circuit is linked with super capacitor, the positive pole of super capacitor is accessed power input end of communication module with lithium cell, super capacitor still accesses the charging loop of lithium cell.

This invention provides a miniature general-purpose electrical control device and method, including a power adapter module, a PLC programming control unit, a central coordination controller, and an integrated control module. The invention acquires input power signals, identifies their type and amplitude range, and generates electrical state identifiers. Based on these identifiers, it selects the corresponding rectifier topology, converting the input power into a stable intermediate DC bus voltage, forming a reconfigurable DC energy pool. It acquires multi-channel load state data through miniature sensor nodes, generating a multi-dimensional load feature vector. Using an improved fuzzy PID coordination controller, it integrates load characteristics with a preset channel priority strategy, calculates energy demand weights, and generates a dynamic power allocation matrix. Based on this matrix, it adjusts the operating mode and power flow of the bidirectional DC / DC converter. This invention significantly improves power adaptability and energy utilization in multi-input, multi-output power supply scenarios, effectively addressing complex operating conditions such as grid fluctuations and uneven load distribution.

This invention provides a power factor correction circuit and a switching power supply. The power factor correction circuit includes: first and second power frequency rectifier circuits, a first high-frequency rectifier circuit, and a bus capacitor; a boost inductor, with its first end connected to the midpoint of the bridge arm of the first power frequency rectifier circuit and its second end connected to the midpoint of the bridge arm of the first high-frequency rectifier circuit; a lightning strike detection unit, including: a first inductor, a detection winding, and a detection device; one end of the primary winding of the first inductor is connected to the first terminal of the AC input grid, and the other end is connected to the midpoint of the bridge arm of the first power frequency rectifier circuit; one end of the secondary winding of the first inductor is connected to the second terminal of the AC input grid, and the other end is connected to the midpoint of the bridge arm of the second power frequency rectifier circuit; the detection device generates a surge protection signal when the voltage across the detection winding exceeds a set value; and a controller, upon receiving the surge protection signal, controls the switching transistor in the second power frequency rectifier circuit to turn off for a fixed time. This invention improves the reliability of the switching power supply.

The application provides an Ethernet-based linear series monitoring system and related equipment, the linear series monitoring system comprising a host device and a plurality of slave devices, a main power supply tap being led out from a secondary coil of each first coupling transformer, and an output end of a first power supply unit being connected with each main power supply tap; a primary tap being led out from a primary coil of each second coupling transformer, and a secondary tap being led out from a secondary coil of each third coupling transformer, a primary tap of an nth second coupling transformer in the same slave device being connected with a secondary tap of an nth third coupling transformer; and the primary taps of the N second coupling transformers in the same slave device all being connected with an input end of a rectifier unit. After the first power supply unit starts to supply power, parallel power supply is performed through 2N wires, so that the equivalent comprehensive line resistance is reduced, the voltage drop and loss are reduced, and the stability of line power supply is improved.

An electronic circuit includes a rectifier module and an energy storage module. The rectifier module includes a three-phase rectifier bridge including first, second, and third bridge arms connected in parallel to each other, and a bidirectional switch assembly including first, second, and third bidirectional switches. One ends of the first, second, and third bidirectional switches are connected to midpoints of the first, second, and third bridge arms, respectively. The energy storage module is connected to a direct-current output end of the rectifier module and includes two capacitors connected in series to each other. One of the two capacitors is connected in parallel to a direct-current load. Other ends of the first, second, and third bidirectional switches are connected between the two capacitors.

A hot-pressing sintering method for an optical zinc sulfide rectifier includes the following steps: zinc sulfide powder pretreatment; loading: mixing the pretreated zinc sulfide powder with a sintering additive with a melting point lower than zinc sulfide and loading it into a mold with a thermal expansion coefficient smaller than that of polycrystalline zinc sulfide, placing it in a hot press furnace, closing the furnace, the weight of the mixed powder loaded into the mold exceeding the raw material weight required for the ideal product of the mold, the mold being pre-coated with a release agent; starting up, when the absolute pressure drops below 500 Pa, starting the heating, while continuing to evacuate to no more than 5 Pa; the first stage heating at 5-10℃ / min to the second stage heating at 300-400℃ / min. 00℃ and hold for 1-4 hours; S4, the vacuum pressure at the second stage target temperature of 300-400℃ should not exceed 5Pa; 10 minutes before the end of the second stage, pre-pressurize in a cold state to 40-60% of the process pressure; in the third stage, continue to raise the temperature to 900-1000℃ at 5-10℃ / min, hold for 30-60 minutes after reaching the temperature, raise the process pressure to 20-40MPa in 30 minutes, and finally hold for 60-120 minutes; after the holding and pressure holding are completed, release the pressure, turn off the heating, let it cool naturally, cool with the furnace to room temperature, and then remove from the furnace.

The application discloses a tracking lock type maximum power point tracking circuit and an implementation method thereof, which comprises a rectifier circuit, a control circuit, a step-down-step-up converter control circuit and a step-down-step-up converter. The rectifier circuit is used for converting input alternating current energy into direct current energy. The control circuit is used for judging the length of current inductance demagnetization time, adjusting the current inductance demagnetization time, realizing indirect detection of inductance current zero-crossing point, and generating a switch timing control signal. The step-down-step-up converter control circuit is used for generating a first switch tube driving signal and a second switch tube driving signal. The step-down-step-up converter is used for adjusting input impedance according to the first switch tube driving signal and the second switch tube driving signal, and realizing maximum power point tracking. The application can realize adaptive locking of the maximum power point under different vibration frequencies and different open circuit voltages, improve the tracking speed of the circuit when the input changes, and can be widely applied to the technical field of integrated circuits.

The application relates to a PMSG non-controlled rectification position estimation method based on a quasi-resonant extended state observer, and relates to the technical field of motor position sensorless control. According to current sampling information under the non-controlled rectification state, the motor static shaft system voltage is calculated, a quasi-resonant controller QR is embedded in view of the low-pass filtering characteristics and the problem of being easily disturbed by low-frequency disturbance existing in the traditional linear extended state observer ESO, so that an improved quasi-resonant extended state observer QR-ESO is obtained, the current and the calculated voltage are input into the observer, the motor back electromotive force is observed, and the motor position information is obtained through a phase-locked loop PLL. On the basis of the diode rectification model method, the static shaft system voltage is calculated by using the sampling current under the non-controlled rectification state, the motor back electromotive force information is observed by using the voltage and the sampling current in combination with the quasi-resonant extended state observer, the rotor position information is synchronously obtained, the estimation precision is high, and the grid-connected surge current is reduced.

The application provides a power management adaptive feedback regulation method and system with a wide voltage input range. In the application, the output current ripple waveform of the power supply is collected, wavelet packet decomposition is performed to extract the energy distribution of the characteristic frequency band, and the dynamic offset characteristics of the energy distribution with the wide voltage input fluctuation are used to identify the load change mode. The electromagnetic vibration caused by the current ripple is captured and converted into recovered electrical energy, which is directly supplied to the feedback circuit to realize energy self-supply. The recovered electrical energy is introduced into the ripple injection inverting proportional circuit, the gain coefficient and phase offset are dynamically set according to the load mode, and the inverting ripple signal is generated. The inverting ripple signal is superimposed on the feedback voltage to offset the ripple fluctuation by dynamically tracking the ripple amplitude change caused by the wide voltage input. Finally, the response speed of the rectifier tube driving timing is adjusted according to the input voltage fluctuation amplitude, and the optimized feedback control signal is generated. The application realizes the load fluctuation compensation and energy recovery closed loop.

The present application relates to the technical field of transformer, and discloses a mechanical locking type rectification voltage regulating transformer, which comprises a shell, an iron core assembly is fixedly installed in the shell, and a winding is sleeved on the periphery of the iron core assembly, wherein the iron core assembly comprises laminations in full-skew joint structure, the laminations comprise lower yoke sheets, core column sheets and upper yoke sheets, and the core column sheets are alternately and adhesively connected with the lower yoke sheets and the upper yoke sheets.The mechanical locking type rectification voltage regulating transformer can effectively solve the problem that in the prior art, in order to facilitate subsequent winding sleeving, the lower yoke sheets and the core column sheets are assembled into a horizontal E-shaped structure in advance, and then the upper yoke sheets are assembled after the winding is sleeved, however, the iron core of the horizontal E-shaped structure is only positioned by the laminated friction force of silicon steel sheets, and displacement or loosening is prone to occur during movement, transportation and overturning, thereby affecting the overall performance of the transformer.

The application discloses a kind of single-phase short-circuit fast detection protection circuit based on spectral characteristics, including AC section and DC section;In AC section, L line is connected in series with Hall current sensor, the output end of Hall current sensor is respectively connected with one end of voltage-dependent resistor and electrical equipment, voltage-dependent resistor is connected with the port III of rectifier element after being connected with electrical equipment in parallel, the port I of rectifier element is connected with N line;In DC section, the collector of the port II of rectifier element is respectively connected with triode NPN, one end of diode D1 and one end of capacitor C1, the emitter of triode NPN is respectively connected with the other end of diode D1, one end of diode D2 and the port IV of rectifier element, the other end of capacitor C1 is connected with the other end of diode D2, the base of triode NPN is connected with CON port through resistance R1.This application samples current by Hall current sensor, judges short-circuit fault using spectral analysis, and cuts off power supply by controlling triode NPN to shut down quickly through CON port, to realize fast short-circuit protection.

This utility model discloses a busbar filtering system and power equipment. The busbar filtering system includes: a rectifier-inverter integrated device, comprising a separated rectifier circuit network and an inverter circuit network, wherein the input side of the rectifier circuit network and the output side of the inverter circuit network are respectively connected to an external AC power supply and a load; a connection device, comprising a first connection component and a second connection component; and a busbar filtering circuit, electrically connected to the output side of the rectifier circuit network and the input side of the inverter circuit network through the first connection component and the second connection component respectively, to form a loop for filtering the busbar voltage. In the rectifier-inverter integrated device of this utility model, the rectifier circuit network and the inverter circuit network are separated, and the rectifier-side bus and the inverter-side bus are not directly connected, reducing direct interference between them. Furthermore, the rectifier-side output and the inverter-side input must pass through the busbar filtering circuit, making the filtering path more absolute and avoiding filtering delay interference.

The utility model discloses LED lamp control circuit and the bulb and the lamp string of application of this circuit, this scheme cleverly through rectifier module access commercial power supply, then again by voltage regulation module to the voltage of access power supply is regulated and controlled, then it is introduced MCU drive module and is powered, through MCU drive module to LED module carries out the working control to realize the synchronous or asynchronous work of multiple LED lamp pearl on LED module, when synchronous work, it can make multiple LED lamp pearl synchronous bright and dark, and when asynchronous work, can realize the light of flowing light lamp or other asynchronous working lamp effect, provide reliable hardware foundation for bulb as atmosphere to set off lamp, and after the circuit board of LED lamp control circuit setting and bulb, bulb can directly by commercial power supply, make it as lamp string use bulb, can not need further through external adapter and carry out power supply voltage regulation and control again power supply, this scheme is reliable and application nimble not only, has better market application prospect and value.

The application provides a variable pitch driver and a control method thereof. Since the pre-charging process of each stage only includes one charging path, if it is judged that the voltage between the two ends of the DC side capacitor branch arranged on the DC side of the rectifier circuit does not reach the set value corresponding to the stage during the pre-charging process of the stage, it can be detected that the switch tube in the charging path corresponding to the stage cannot work normally; since the pre-charging process of the DC side capacitor branch is divided into at least two stages and is carried out one by one during the soft start process of the variable pitch driver, and the charging paths corresponding to all stages cover all switch tubes, it can be detected whether each switch tube in the variable pitch driver cannot work normally; since all the above-mentioned switch tubes are current type devices, the variable pitch driver whose own switch tube is a current type device can detect whether each switch tube in itself cannot work normally during the soft start process of itself.

This invention provides a three-phase isolated bidirectional AC-DC converter and a component monitoring method, relating to the field of AC-DC converter technology. It includes a three-phase full-bridge circuit, a resonant network circuit, an output rectifier circuit, a status monitoring circuit, and a controller. The three-phase full-bridge circuit includes an A-phase bridge arm unit, a B-phase bridge arm unit, and a C-phase bridge arm unit, with the three-phase output power supply connected to each unit respectively. The resonant network circuit is connected to the three-phase full-bridge circuit, and the output rectifier circuit is also connected to the resonant network circuit. The controller is communicatively connected to the switching transistors in the three-phase full-bridge circuit. A temperature monitoring unit is connected to the switching transistors in the three-phase full-bridge circuit. This invention reduces the number of switching transistors in the converter, reduces the adjustment pressure on the DC side, and decreases the size of the DC bus capacitor, thereby reducing the complexity of the converter and decreasing the possibility of prolonged operation under fault conditions.