77 results about "Full bridge inverter" patented technology

The embodiment of the invention discloses a multiplex type three-stage starting power generation controller, and relates to the technical field of aviation three-stage starting power generators. In the starting stage, an H-bridge inverter in the starting power generation controller provides single-phase alternating-current exciting current for a main exciter stator exciting winding through SPWM modulation so as to establish a pulsating magnetic field to provide exciting current for a main motor, and a three-phase full-bridge inverter provides armature current for a main motor stator armature winding through SVPWM modulation. In a power generation stage, an anti-parallel diode of the three-phase full-bridge inverter is used as a rectification circuit of the auxiliary exciter, and the H-bridge inverter adopts a PWM chopping mode to operate as an asymmetric half-bridge circuit. A power generation controller and a starting controller are integrated into a whole, and by changing the modulation mode of a hardware circuit, the control function of the three-stage starting generator at different stages can be realized by only one controller, so that the structure of the starting power generation controller is simplified, the system integration degree of the three-stage starting generator is improved, and the volume and the weight of the system are reduced.

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.

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 invention provides a control method, a storage medium, a full-bridge inverter and electronic equipment, and the control method is applied to the full-bridge inverter, and comprises the steps: controlling the full-bridge inverter based on a triangular wave mode of an inductive current; a compensation current value is obtained, wherein the compensation current value is a negative current increment caused by full-bridge inverter inductive current falling edge sampling calculation delay; and compensating a preset extreme value of the inductive current of the full-bridge inverter based on the compensation current value. According to the control method provided by the embodiment of the invention, the compensation current is obtained based on the negative current increment caused by the full-bridge inverter inductive current falling edge sampling calculation delay, the preset extreme value of the inductive current is compensated, the negative current influence caused by the inductive current falling edge sampling calculation delay is counteracted, and the inverter efficiency and the current quality are improved.

The application discloses a foreign matter detection circuit applied to a wireless charging system transmitting end and a method thereof, and the circuit comprises a sampling circuit, a linear voltage stabilizing source, two comparators and a microprocessor; wherein the linear voltage stabilizing source is responsible for charging a resonant cavity circuit, the sampling circuit samples a resonant waveform, filters out a negative voltage and outputs the same to the comparators, the comparators extract resonant frequency, resonant time and peak value information, and the microprocessor calculates a Q value through the information and performs foreign matter detection judgment. The application can not be affected by a specific structure resonant cavity, a delay of a wireless charging system transmitting end full-bridge inverter driving circuit and a comparator offset voltage in the foreign matter detection circuit, and can realize extremely high foreign matter Q value detection precision under a higher resonant frequency, and has important significance for improving a safety coefficient of wireless charging system application.

A non-isolated converter includes a transformer having a primary winding and a secondary winding, a primary-side inverter, a secondary-side rectifier, and an output filter. The primary-side inverter is a full-bridge inverter providing two conduction paths for primary current during ON intervals of a switching cycle. The conduction paths are connected at a low-side common connection directly connected to the output side of the secondary winding, to provide the converter output current as the sum of the primary current and the secondary current during the ON intervals. Because the converter output includes a contribution from primary-side current due to the direct connection, certain advantages may be realized such as reduced primary-winding area / losses and reduced losses in the secondary-side rectifier.

This invention discloses a strip-shaped embedded micro grid-connected inverter at the edge of a photovoltaic panel, comprising a matching strip-shaped housing and internal circuitry. The strip-shaped housing is embedded within the metal frame of a single photovoltaic panel. The internal circuitry sequentially includes a PV-end filter, an isolated non-resonant high-frequency boost DC-DC converter, a full-bridge inverter, and a grid-connected filter. It employs a non-resonant linear soft-switching topology, configured to enable all internal switches to achieve non-resonant zero-current soft-conduction and all diodes to achieve non-resonant zero-current soft-turn-off. This invention discloses a strip-shaped embedded micro grid-connected inverter at the edge of a photovoltaic panel, achieving deep integration with the photovoltaic panel frame through a strip-shaped structure design and utilizing the linear variation characteristic of transformer leakage inductance current to achieve non-resonant linear soft-switching across the entire power range.

The invention discloses a detection-free zero-voltage switching-on method based on a full-bridge inverter intermittent current mode, and relates to a power electronic converter. The micro inverter works in an inductive current intermittent conduction mode, zero-voltage switching-on of a switching tube can be realized on the basis of not adding any additional device and auxiliary circuit, and the efficiency of the inverter is effectively improved. The traditional scheme generally depends on a sampling circuit to detect a resonance current zero crossing point between an inductor and a switch tube shunt capacitor to determine the turn-on time, so that the hardware complexity is increased, and the zero-voltage turn-on effect depends on the reliability of a detection circuit. And when the switching frequency is relatively high, the inherent delay characteristic of the sampling circuit can limit the zero-voltage switching-on realization effect. The invention provides a zero-voltage turn-on moment determination strategy based on inverter behavior modeling in an intermittent conduction mode, a detection circuit is not needed, and the zero-voltage turn-on moment can be accurately determined only through discrete time control by a controller after modeling, so that full-period soft switching is realized, and the hardware complexity is reduced.

The invention discloses a method and a system for controlling a network-forming converter based on direct-current voltage synchronization, and belongs to the field of power electronic converter control. In order to overcome the defects that a traditional grid-following type converter does not have the grid-building capacity, depends on a constant direct current source and needs to be provided with energy storage, and existing related patents, the system comprises a three-phase full-bridge inverter, a grid-building type converter control system and a sensor. The method comprises the following steps of: acquiring direct-current voltage Udc, terminal voltage utabc and output current iabc of the converter, generating a coordinate transformation angle theta c through a direct-current voltage controller, performing coordinate transformation and alternating-current voltage / current double-closed-loop control, generating a modulation signal in combination with coordinate inverse transformation and a PWM (Pulse-Width Modulation) generator, and controlling a power switch device. The method breaks through the dependence of a constant direct current source, reduces the cost, can support the voltage and frequency of a power grid, is high in anti-interference capability, and improves the universality and stability of a converter grid-connected system.

The disclosure relates to a fifth-generation (5G) or pre-5G communication system to support a higher data transmission rate beyond that of a fourth-generation (4G) communication system, such as Long-Term Evolution (LTE). According to embodiments of the disclosure. An apparatus and method in a wireless communication system are provided. The apparatus includes a full-bridge inverter configured to convert an input first direct current (DC) signal into a first alternating current (AC) signal, a plurality of multilayer ceramic capacitors (MLCCs) configured to isolate the first AC signal output from the full-bridge inverter to output a second AC signal, and a full-bridge rectifier configured to convert the second AC signal output from the plurality of MLCCs into a second DC signal. The plurality of MLCCs isolate the full-bridge inverter from the full-bridge rectifier, an inductor is connected to one end of each of the plurality of MLCCs, and an operating frequency of the first AC signal corresponds to a resonant frequency.

Provided is a power conversion apparatus including an input circuit generating an input voltage, a buck-boost converter connected to the input circuit, a first full-bridge inverter and a second full-bridge inverter, which are connected to the buck-boost converter, at least one first inductor connected to the first full-bridge inverter, at least one second inductor connected to the second full-bridge inverter, an output circuit connected to the at least one first inductor and the at least one second inductor to generate an alternating current output voltage, and at least one processor configured to apply a first carrier signal and a reference signal to the first full-bridge inverter and applying a second carrier signal and the reference signal to the second full-bridge inverter, wherein the first full-bridge inverter operates based on the first carrier signal and the reference signal, and the second full-bridge inverter operates based on the second carrier signal and the reference signal.

The invention belongs to the technical field of voltage-withstanding instrument boosting power supplies, and particularly relates to a full-voltage-range high-performance boosting device and a control method thereof. The device comprises a front-stage electric self-coupling voltage regulator and a rear-stage full-bridge inverter, the front-stage electric self-coupling voltage regulator is associated with the rear-stage full-bridge inverter through a direct-current bus to perform voltage linkage control; the front-stage electric self-coupling voltage regulator is used for realizing alternating current voltage regulation in a range of 0-220V; and the post-stage full-bridge inverter is used for converting the voltage-regulated alternating current into 0-311V variable direct current voltage, and inverting the direct current voltage to obtain the required output voltage. According to the invention, through a cooperative control strategy, full-range high-precision and low-harmonic voltage output from zero to rated voltage can be realized.

Planar power module (200), comprising: a first substrate (40); a second substrate (140) arranged parallel to the first substrate (40), wherein the first substrate (40) and the second substrate (140) each have a dielectric layer (42, 142) arranged between two conductive layers (44A, 44B, 144A, 144B) such that one of the two conductive layers (44B, 144A) of both the first substrate (40) and the second substrate (140) together form parallel outer conductive surfaces (41, 141) of the power module (200); Direct current rails (DC rails) (28); Alternating current busbars (AC busbars) (30); a plurality of semiconductor switching chips (22) arranged between the first substrate (40) and the second substrate (140) and electrically connected to the DC rails (28) and the AC rails (30), each of the semiconductor switching chips (22) being electrically connected to a conductive layer (44B) of the first substrate (40) and a conductive layer (144B) of the second substrate (140); a polymer molding compound (48) surrounding the edges of the first substrate (40), the second substrate (140) and the plurality of semiconductor switching chips (22), wherein the power module (200) is configured as a full-bridge inverter circuit; and at least one temperature sensor (34) connected to one of the two conductive layers (44A, 44B) of the first substrate (40) and / or one of the two conductive layers (144A, 144B) of the second substrate (140); wherein the at least one temperature sensor (34) comprises a first temperature sensor (34) connected to a first of the parallel external conductive surfaces (41, 141) and a second temperature sensor (34) connected to a second of the parallel external conductive surfaces (41, 141).

The present application relates to the technical field of switched reluctance motor control, and specifically relates to a single current sensor control method for a tail topology switched reluctance motor, which comprises the following steps: step one: building a tail topology switched reluctance motor drive system; the system comprises a switched reluctance motor, a direct current power supply, a direct current bus, a single bridge arm, a current sensor, and a three-phase full-bridge inverter; step two: during system operation, the system is controlled as follows: an SVPWM module generates a PWM drive signal for the three-phase full-bridge inverter, and a controller generates a PWM drive signal for the single bridge arm, thereby achieving SVPWM control of the switched reluctance motor; during SVPWM control, the actual three-phase winding current value and the actual neutral point current value are reconstructed according to the direct current bus current value collected by the current sensor. The present application solves the problems of high hardware cost, high wiring complexity, and poor work reliability of the existing tail topology switched reluctance motor SVPWM control method, and is suitable for new energy vehicles, industrial drives, and other fields.

The utility model is applicable to the technical field of electronic circuits, and provides an over-current detection and protection circuit applied to a three-phase full-bridge inverter, which comprises a UVW module, the output end of the UVW module is connected with the input end of an optical coupler output module, the output end of the optical coupler output module is respectively connected with the input end of a blocking six-path drive PWM module and the input end of a microprocessor MCU, and the output end of the microprocessor MCU is connected with the output end of the UVW module. The output end of the microprocessor MCU is connected with the input end of the blocking six-path drive PWM module, the output end of the blocking six-path drive PWM module is connected with the input end of the UVW module, and the power supply module is electrically connected with the UVW module, the optocoupler output module, the blocking six-path drive PWM module and the microprocessor MCU. When reliability and double over-current protection are added to the product, the circuit is simplified, the power consumption of the device is small, the packaging is small, the wiring of the functional circuit is convenient, the occupied pcb space is small, the addition is convenient in product optimization, and the size of the product is reduced.

The invention provides an energy and signal simultaneous transmission system and method for underwater equipment with a homologous interference resisting function, and the system is characterized in that a transmitting end is packaged in an underwater base station, and the system comprises a DC voltage source, a full-bridge inverter, a primary side compensation topology circuit and a primary side transmitting coil which are connected in sequence; the receiving end is packaged in an underwater equipment motor cabin section and comprises a secondary side receiving coil, a secondary side compensation topology circuit, a full-bridge rectifier and a load which are connected in sequence; resonance injection-extraction anti-interference circuits designed on the two sides can inject a modulated to-be-transmitted emission information signal into an energy transmission channel, and the modulated to-be-transmitted emission information signal and an energy signal are sent and received at the same time. Receiving information signals and transmitting information signals on the same side can be separated, so that the transmitting information signals on the same side are prevented from interfering with the receiving signals on the side, and the receiving signals are effectively extracted; the simultaneous bidirectional communication of energy and signals is realized, and the signal transmission quality and the energy transmission efficiency are improved.

The invention discloses a series resonant DC transformer and a control method for magnetic bias suppression thereof, and the DC transformer consists of a low-voltage-side circuit breaker, a low-voltage-side DC support capacitor, a low-voltage-side full-bridge inverter, a resonant capacitor, an isolation transformer, a high-voltage-side DC support capacitor and a rectification circuit. During starting, pre-charging is carried out, a low-voltage side direct-current supporting capacitor is charged, and after charging is completed, progressive phase-shifting control is carried out on a low-voltage side full-bridge inverter in the series resonant direct-current transformer; a normal operation stage is carried out after pre-charging is completed, when shutdown occurs, resonance current flowing through leakage inductance of an isolation transformer is gradually reduced by controlling a low-voltage side circuit breaker and a low-voltage side full-bridge inverter, and non-magnetic-bias shutdown is carried out; and when a fault occurs, the series resonant direct-current transformer is locked according to the exciting current. According to the invention, magnetic bias suppression can be achieved without external demagnetization equipment or an auxiliary circuit.

The invention relates to the technical field of fault type diagnosis, in particular to a three-phase full-bridge inverter fault diagnosis method, system and equipment. The method comprises the following steps: acquiring a PWM command signal in a three-phase full-bridge inverter and an electric signal and a temperature signal of an IGBT device; based on the bridge arm on-off logic performance, the electric signal and the temperature signal of the IGBT device in the PWM instruction signal period, obtaining an on-off logic analysis coefficient and a conduction efficiency coefficient of the IGBT device, combining a fault determination threshold and a constraint condition, obtaining a fault type label of the IGBT, constructing a fault sample set, training a fault type identification model, and obtaining a fault type identification result; obtaining a trained fault type identification model; according to the method, the on-off logic analysis coefficient and the conduction efficiency coefficient are accurately obtained, so that the accuracy of fault type tag identification is effectively improved, the fault type of the IGBT device can be accurately identified in real time, corresponding processing is carried out in time, and the fault loss of the three-phase full-bridge inverter is effectively reduced.

A non-isolated converter includes a transformer having a primary winding and a secondary winding, a primary side inverter, a secondary side rectifier, and an output filter. The primary-side inverter is a full-bridge inverter that provides two conduction paths for the primary current during an on-interval of a switching cycle. The conduction paths are connected together at a low-end common junction directly connected to the output side of the secondary winding to provide a converter output current as a sum of the primary current and the secondary current during the turn-on interval. Because the converter output includes the contribution of the primary side current due to the direct connection, certain advantages can be achieved, such as reducing primary winding area / loss and reducing loss in the secondary side rectifier.

The invention provides a negative logic UC3901 isolation control circuit and method based on a phase-shifted full-bridge converter. The circuit is characterized by comprising a full-bridge inverter, a power transformer, a current doubler rectifier, a voltage and current sampling circuit, a voltage loop compensation network, a current loop compensation network, a magnetic isolation circuit, a main control circuit and a driving circuit, the full-bridge inverter, the power transformer and the current doubler rectifier form a power circuit of the converter, and the rest parts form a control circuit; the magnetic isolation circuit comprises a UC3901 chopping chip, an isolation transformer and a rectifier filter, and the UC3901 chip is used for chopping an analog control signal Vcoms of over 0.45 V, so that the analog control signal Vcoms becomes an alternating current signal, and magnetic isolation transmission of the analog signal is realized. A conventional magnetic isolation drive circuit is replaced by the magnetic isolation circuit, the size and the weight of the circuit are reduced, and meanwhile a novel magnetic isolation mode is provided.

This utility model discloses an orthogonally coupled dual-receiver wireless charging system for unmanned aerial vehicles (UAVs), comprising a ground transmitter and a UAV receiver. The ground transmitter includes a DC power supply, a transmitter control circuit, a full-bridge inverter, a transmitter coil, and a transmitter compensation capacitor. The UAV receiver includes a UAV landing gear, first and second receiver coils, a rectifier bridge, first and second receiver compensation capacitors, a filter capacitor, and a load. The DC power supply, full-bridge inverter, transmitter compensation capacitor, and transmitter coil are connected in sequence. The transmitter control circuit is connected to the full-bridge inverter. The first and second receiver coils are respectively connected to the first and second receiver compensation capacitors. The first and second receiver compensation capacitors are connected to the rectifier bridge. The rectifier bridge, filter capacitor, and load are connected in sequence. The first and second receiver coils are connected to the UAV landing gear. When the coupling coefficient of the system reaches the critical coupling coefficient, the system has three real solutions, achieving output power and efficiency independent of the coupling coefficient.

The invention provides an MC-WPT system with partial power control and a power adjusting and efficiency improving method thereof. A primary side of the system is provided with a primary side direct-current power supply, N primary side full-bridge inverters, N primary side compensation networks, a primary side capacitor and a primary side coil; the secondary side is provided with a secondary side coil, a secondary side capacitor, a secondary side first compensation network, a secondary side second compensation network, a secondary side passive rectifier, a secondary side active rectifier and a rechargeable power supply; according to the invention, a primary and secondary side cooperative control strategy of power level matching-redundant module cut-out-external shift phase angle resetting is adopted, the matching of the system power and the improvement of the efficiency are realized, the number of primary side modules is determined according to the power level requirement, and then the external shift phase angle is regulated and controlled by controlling the impedance angle of the secondary side modules, so that the power level of the system is improved. Therefore, the offset of the system power is realized, and the power adjusting range is obviously widened. The system can adapt to various application scenes such as vehicle-mounted wireless charging and industrial equipment power supply, and has remarkable engineering practical value.

In the traditional wireless power transmission technology, a full-bridge inverter is mostly adopted to realize alternating-current inversion, so that the problems that the cost of a wireless charging product is increased, the inversion frequency is limited and the like are caused. In order to realize high degree of freedom and low cost of a wireless charging product, an E-type inverter is often adopted to realize high-frequency inversion. And the E-type inverter adopts a single switching tube for inversion, so that the requirement on devices is low. However, the E-type inverter is greatly influenced by a load and is easy to work in a hard switching state due to load change, so that the working efficiency of the system is reduced, a switch is damaged under a serious condition, the stability of the system is reduced, and finally the application of the E-type inverter in an actual product is limited. The invention discloses a high-efficiency and wide-load soft switching system design scheme and a corresponding control strategy. In a wireless charging system adopting an E-type inverter, when the system works at a rated distance, a secondary side series compensation capacitor is connected, and when the transmission distance becomes closer, the efficiency and the power of the wireless charging system based on the E-type inverter are in a state that the efficiency and the power are suddenly reduced after being transiently increased. At the moment, if the system efficiency is obviously reduced or the temperature of the switching tube is abnormally increased, the secondary side compensation capacitor parallel switch is closed, the series compensation capacitor is equivalently cut off, the system is recovered to the soft switching state, the switching temperature is recovered to be normal, and the system efficiency and the output power are obviously improved.

The application discloses a control circuit of a five-level full-bridge inverter in the technical field of power electronics, and the five-level full-bridge inverter comprises a high-frequency bridge arm and a low-frequency bridge arm, the high-frequency bridge arm comprises four SiC tubes and two Si tubes, and the low-frequency bridge arm comprises two Si tubes; the control circuit comprises a closed-loop control circuit and a driving modulation circuit; the closed-loop control circuit comprises a sampling circuit and a closed-loop controller, the sampling circuit is used for collecting the current and voltage of the output end of the five-level full-bridge inverter; the closed-loop controller obtains the current and voltage of the output end of the five-level full-bridge inverter to generate a modulation signal; the driving modulation circuit obtains the modulation signal generated by the closed-loop controller to generate a driving signal, and sequentially drives the four SiC tubes to take turns to bear the switching loss, so that the switching losses among all the switching tubes are balanced, and the power level and conversion efficiency of the inverter are improved.

The invention provides a wireless power transmission efficiency enhancement method and system based on a Buck-inversion composite structure, and relates to the technical field of wireless power transmission. Through cooperative regulation and control of the Buck converter and the full-bridge inverter, stable control over high-frequency energy transmission and output is achieved, the coupling efficiency is improved in combination with an LCC-S compensation network, the duty ratio and the modulation ratio are dynamically adjusted through real-time sampling and a PID algorithm, self-adaptive derating and alarming are achieved in combination with temperature monitoring, and the stability and safety of the system are effectively improved.

The invention discloses a resonance induction wireless power transmission converter with a power factor correction function, and belongs to the technical field of wireless power supply. According to the converter, a single-stage integrated framework is adopted, an interlaced power factor correction sub-stage and a resonant induction type wireless power transmission sub-stage are deeply fused, and an intermediate DC-DC conversion stage of a traditional multi-stage framework is omitted; the resonant induction WPT sublevel realizes non-contact energy transmission through the transmitting coil, the receiving coil and the mutual inductor, and power switch tubes of the full-bridge inverter all realize zero-voltage switching, so that the switching loss is reduced; and the output side provides stable direct current through the full-bridge rectification and filtering module. The device is compact in size, high in efficiency and suitable for medium-low-power wireless power supply scenes such as consumer electronics and biomedical implants.

The invention provides a real-time intelligent control hub system based on a GPPC series open converter. The real-time intelligent control hub system comprises a first intelligent control module and a second intelligent control module, wherein the first intelligent control module comprises a control method design sub-module, a first core control sub-module and a first monitoring sub-module, the second intelligent control module also comprises a control method design sub-module, and the second intelligent control module also comprises a second core control sub-module and a second monitoring sub-module. The core control sub-module and the monitoring sub-module are connected with the GPPC series open converter; the beneficial effects of the invention are that students or researchers can autonomously design a control system through MATLAB / SIMULINK and GPPC series open type converters, adjust circuit parameters in real time, observe the action state of a switching device and the waveform change of analog quantity such as current / voltage / active power, visually understand a Buck / Boost converter and a three-phase full-bridge inverter, and realize the real-time simulation of the three-phase full-bridge inverter. The invention relates to a working principle or an SPWM (sinusoidal pulse width modulation) process of various topological structures such as an H-bridge inverter.

A control device for a full-bridge inverter uses a modulation method to drive an OEW motor. The control unit operates respective half-bridge switches on opposite sides of the bridge branch such that the half-bridge switch on one side maintains a constant switching state, while the half-bridge switch on the other side switches according to the modulation method. This switching modulation is used to output the predetermined target AC voltage in the bridge branch. To achieve the predetermined target AC voltage, at least one phase on one side is switched to a constant switching state according to a first switching scheme, while the opposite half-bridge switch is operated using the modulation method.The half-bridge switches on opposite sides are alternately switched to the constant switching state according to a second switching scheme. These switching schemes are determined depending on the phase voltage magnitude or the sign of the phase voltage or phase current. A corresponding control procedure is described.

This invention discloses a multi-coil wireless power transfer system with anti-offset constant current output characteristics, belonging to the field of anti-offset constant current output wireless power transfer technology. It aims to address the limitations of existing control strategies, topology optimization, and coil structure design. The technical solution includes a DC voltage source, a full-bridge inverter, a first transmitting side, a second transmitting side, a relay circuit, a first receiving side, a second receiving side, a rectifier circuit, a filter capacitor, and a load. This system can be equivalently represented as a decoupled four-coil structure connected in parallel with a decoupled compensation topology. When the coils deviate, the output current of one path increases or decreases, while the output current of the other path shows the opposite trend, decreasing or increasing accordingly. This creates a complementary regulation effect, maintaining the total output current of the system at a relatively stable level, thereby improving the overall output stability and reliability.

Provided is a power conversion device including an input circuit configured to generate an input voltage, a first full-bridge inverter and a second full-bridge inverter each connected to the input circuit, at least one first inductor connected to the first full-bridge inverter, at least one second inductor connected to the second full-bridge inverter, an output circuit connected to the at least one first inductor and the at least one second inductor to generate an alternating current (AC) output voltage, and at least one processor configured to apply a first carrier signal and a control signal to the first full-bridge inverter, and apply a second carrier signal and the control signal to the second full-bridge inverter, wherein the first full-bridge inverter operates based on the first carrier signal and the control signal, and the second full-bridge inverter operates based on the second carrier signal and the control signal.