147 results about "Energy feedback" patented technology

The invention discloses an automobile fastener production energy consumption optimization control method and system, and relates to the technical field of fastener production, and the method comprises the following steps: obtaining a real-time current waveform signal and a power grid fundamental wave voltage signal of an inversion unit in an energy feedback link, building a phase dynamic drift model through a time difference analysis algorithm, and carrying out the calculation of the phase dynamic drift model; continuous mapping of energy flow direction change is formed on a time axis; and based on the established phase dynamic drift model, extracting an offset rate continuous change section between the current waveform and the power grid fundamental wave, constructing a phase trend prediction function by using a sliding window algorithm, and converting the time characteristic of the energy flow direction change into a phase prediction signal trajectory. Through phase dynamic drift modeling and lead compensation control, synchronization of feedback current and power grid voltage is realized, and ripple current and element stress are reduced; and through energy density change rate extraction and dynamic filtering regulation and control, the energy flow is stable and continuous, and efficient and energy-saving control over fastener production is achieved.

The invention discloses a tuned mass vibration damper with controllable damping, and relates to the field of vibration control of offshore wind power generation equipment structures. The mass damping unit is arranged in a suspended mode, the clamping ring is coaxially arranged, the electromagnetic damping units are evenly distributed in the circumferential direction of the clamping ring, and the electromagnetic damping units are connected with the mass damping unit through winding ropes which are arranged in a radial mode to form a multidirectional synergistic composite damping system; the mass damping unit generates reverse inertia force in vibration to restrain movement of the tower and drives the electromagnetic damping unit to act at the same time, the generator is driven to generate electromagnetic damping through the one-way bearing and the speed increaser, and lossless reset is achieved through the torsion ring. The device is integrated with an energy recovery unit, vibration energy is converted into electric energy to be stored, real-time regulation and control of damping force, omni-directional vibration response and energy feedback are achieved, and the vibration reduction efficiency and the energy utilization rate are remarkably improved.

The invention discloses an elevator energy feedback and energy storage system, and belongs to the field of energy feedback. Comprising a super capacitor cabinet, the super capacitor cabinet comprises a cabinet body frame, and the side surface of the cabinet body frame is provided with ventilation mesh holes; the dehumidification module is arranged on the inner wall of the cabinet body frame, and the dehumidification module is used for removing moisture in the super capacitor cabinet; the dust removal module is arranged on the side face of the cabinet body frame and used for synchronously cleaning the ventilation mesh holes along with falling of the dehumidification bag; and the collection module is arranged on the dehumidification module, and the collection module is used for collecting the dust falling into the super capacitor cabinet. According to the elevator energy feedback and energy storage system, a dehumidification bag is automatically replaced through the dehumidification module, and low-frequency inspection is adapted; the dust removal module cleans the ventilation mesh holes through mechanical linkage; the collecting module collects dust through an air curtain and a drawer. The three synergistically guarantee dehumidification, ventilation and dust prevention, reduce the risk of short circuit, and ensure long-term reliable operation of the elevator energy storage system.

The invention discloses a PT ferromagnetic resonance adaptive collaborative suppression method and system, and the method comprises the steps: sampling a voltage signal, a current signal and a PT secondary side voltage signal monitored by a high-voltage end sensing unit in real time, and calculating a primary side voltage change rate and harmonic content; comparing the calculated primary side voltage change rate and harmonic content with corresponding preset thresholds, controlling to input a neutral point reconstruction unit, and destroying resonance conditions by changing neutral point grounding impedance; after the neutral point reconstruction unit works, the input energy feedback unit is controlled and used for absorbing resonance energy; and when it is detected that the resonance threat is eliminated, the neutral point reconstruction unit and the energy feedback unit are controlled to be turned off in sequence, and active cooling of the high-voltage end sensing unit is started by using residual energy in the energy feedback unit. According to the method, by monitoring the voltage change rate and the harmonic content in real time, a neutral point is rapidly triggered to reconstruct and damage resonance, energy is absorbed and fed back through an energy feedback unit, and finally system safety recovery is achieved.

The invention discloses a plugboard detection equipment management system and method, and relates to the technical field of equipment management, and the method comprises the following steps: S100, collecting response tracks of an illumination signal and an image sampling signal under nanosecond-level time domain precision, generating a coupling frequency spectrum of the illumination signal and the image sampling signal, and extracting a time domain relation between current response delay and sampling trigger drift; constructing a time sequence data set for control; s200, constructing a dynamic illumination distribution model based on the time sequence data set, analyzing the phase difference between the illumination brightness change and the sampling signal, extracting a key anchor point causing the sampling delay mutation, and calculating the time weight of the anchor point; according to the method, the time domain base line is established through unified time marks, dynamic illumination modeling and anchor point recognition are combined, image sampling delay prediction and compensation are achieved, a synchronous phase locking and energy feedback mechanism is matched, a closed-loop control chain is constructed, the sampling stability and the detection precision are improved, and the method is suitable for a high-consistency plugboard detection production line.

The application discloses a method and system for optimizing and controlling energy consumption in automobile fastener production, and relates to the technical field of fastener production. The method comprises the following steps: obtaining real-time current waveform signals and power grid fundamental voltage signals of an inverter unit in an energy feedback link, establishing a phase dynamic drift model by using a time difference analysis algorithm, and forming a continuous mapping of energy flow direction changes on a time axis; extracting a continuous change section of an offset rate between the current waveform and the power grid fundamental based on the established phase dynamic drift model, constructing a phase trend prediction function by using a sliding window algorithm, and converting the time characteristics of energy flow direction changes into a phase prediction signal trajectory. The application realizes the synchronization of feedback current and power grid voltage by phase dynamic drift modeling and advance compensation control, reduces ripple current and component stress, extracts energy density change rate and dynamically filters and regulates, makes energy flow smooth and continuous, and realizes efficient and energy-saving control of fastener production.

According to one embodiment of this application, a testing method for a braking unit is provided. The braking unit to be tested is connected to the DC bus of a frequency converter, and the frequency converter is connected to a motor. The motor is driven to accelerate to a preset speed. An emergency stop operation is performed on the motor, causing the motor to generate energy feedback to the DC bus of the frequency converter, thereby causing the DC bus voltage to rise. By monitoring the DC bus voltage, when the DC bus voltage rises to a preset threshold, the braking unit is triggered to operate, consuming the feedback energy in the braking resistor of the braking unit. By adjusting the emergency stop time of the motor, the feedback energy consumed by the braking unit is controlled, thereby enabling the testing of different braking powers of the braking unit to be tested. This method improves the accuracy and versatility of the test and is more user-friendly. This application also provides a testing system for a braking unit.

The application provides a construction elevator regenerative electric energy self-adaptive feedback energy-saving system and method based on bus voltage time sequence feature working condition recognition, and belongs to the technical field of building construction energy saving. The system comprises a construction elevator without counterweight, a working condition intelligent recognition module, an energy feedback system, a construction site 380V power frequency power grid and a multiplex terminal. The construction elevator is the main body of energy recovery, the working condition intelligent recognition module collects the instantaneous value of the frequency converter direct current bus voltage of the construction elevator, the duration of the bus voltage being continuously higher than the reference threshold value, calculates the voltage change rate, identifies three working conditions of heavy load descent, no-load ascent and braking based on a weighted multi-parameter discrimination algorithm, and dynamically matches the start-stop voltage threshold value of the corresponding energy feedback system according to the working condition recognition result. The application solves the tedious problem of traditional manual measurement of threshold value, realizes dynamic threshold value matching maximum feedback efficiency, realizes efficient recovery of energy, does not modify the original system, has an extremely simple structure, has high intelligence, and is safe and reliable in operation.

An electromechanical steering system comprises a first actuator having a first electric motor and a first control unit, and a second actuator having a second electric motor and a second control unit, wherein the first electric motor can be operated in a motor mode or a generator mode depending on the driving situation, wherein the first actuator and the second actuator are communicatively connected to one another, and the second control unit is designed, in a generator mode of the first electric motor, to actuate the second electric motor in such a way that a current that is generated in a generator mode of the first electric motor is converted energetically by the second electric motor, in particular by influencing a Id current for the second electric motor specified by vector control. A method for operating such a steering system in a motor vehicle comprises generating a current in a generator mode of the first electric motor and energetically converting the generated current by the second electric motor.

The application provides a piezoelectric energy feedback suspension equivalent stiffness and damping measurement method and device, and relates to the technical field of suspension stiffness and damping measurement. The method comprises the following steps: building a test platform; simulating the motion process of the excitation gear and the piezoelectric cantilever beam when the piezoelectric energy feedback suspension vibrates, obtaining the vibration displacement of the free end of the piezoelectric cantilever beam, and measuring the voltage signal generated by the piezoelectric cantilever beam during the vibration process; obtaining the speed change curve of the free end of the piezoelectric cantilever beam based on the change of the vibration displacement with time; drawing the voltage change curve of the piezoelectric cantilever beam during the vibration process according to the voltage signal; obtaining the continuous stiffness of the piezoelectric cantilever beam, so as to obtain the equivalent stiffness and equivalent damping of the piezoelectric energy feedback suspension. The application can measure the equivalent stiffness and damping of the piezoelectric energy feedback suspension, and provides a theoretical basis for the dynamic characteristic analysis and real vehicle application of the piezoelectric energy feedback suspension.

The invention discloses a direct-current ship power grid fault flexible ride-through method based on zero-sequence current injection, which belongs to the technical field of direct-current ship power grid fault protection, and comprises the following steps: when a switch fault is detected, positioning the position of a fault switch; calculating the degree of asymmetry of the direct-current voltage according to the output voltage requirement of the inverter; the direct-current voltage asymmetry degree serves as input, the rectifier is controlled through carrier amplitude modulation and zero-sequence component injection, and asymmetric direct-current voltage is output; the method comprises the following steps of: determining locking and conducting switches when different switch faults occur, and controlling an inverter to realize generation of separated alternating-current phase voltage and optimal zero-sequence component injection through two-level carrier modulation according to asymmetric direct-current voltage so as to complete flexible fault ride-through of the frequency converter. By adopting the method, the processes of capacitor discharge, energy feedback and the like in the fault period are adjusted through the control factors, system instability and equipment reverse rotation are prevented, and continuous power supply and operation safety of a ship power grid are guaranteed.

The application discloses a kind of based on binocular camera formula hybrid electromagnetic suspension control system, including travel information detection unit, binocular camera comprehensive evaluation index calculation unit, binocular camera formula hybrid electromagnetic suspension control mode selection unit, binocular camera formula hybrid electromagnetic suspension execution unit.Travel information detection unit is used to obtain outdoor temperature, full energy feedback control mode execution time, half energy feedback half energy consumption control mode execution time, full energy consumption control mode execution time;Binocular camera comprehensive evaluation index calculation unit is used to calculate image pre-detection evaluation factor, original image correction evaluation factor, temperature compensation evaluation factor, to obtain binocular camera comprehensive evaluation index;Binocular camera formula hybrid electromagnetic suspension control mode selection unit includes full energy feedback control mode, half energy feedback half energy consumption control mode, full energy consumption control mode;Binocular camera formula hybrid electromagnetic suspension execution unit is adjusted according to different control mode to vehicle corresponding rule.

The invention discloses an industrial power-saving system and method based on multi-frequency-band conflict avoidance and energy feedback, and relates to the technical field of industrial power-saving systems.The method comprises the steps that a power grid fundamental wave synchronizing signal is obtained through a zero-cross detection circuit, an integrating circuit is input to generate a slope time-base signal, and the time-base signal is used for controlling the triggering moment of a high-frequency modulation pulse; the method comprises the following steps: modulating a pulse to intensively act on wave crest and wave trough areas of an AC voltage waveform, exciting an LC resonant circuit connected to a DC side of an electric energy conversion device by the modulating pulse to enable the LC resonant circuit to enter a quasi-resonant state in a phase interval, and actively releasing energy to a load by an energy storage capacitor; the system is controlled to be switched on preferentially, power supply competition for a main power supply is formed, main current output is correspondingly reduced on the premise that load power is not changed, energy conservation and consumption reduction are achieved, and the system further improves electric energy quality and operation stability through unified clock synchronization, phase out-of-sequence control, energy local circulation and impedance frequency band avoidance.

The invention discloses an all-electric engine self-powered system architecture and a control strategy thereof, and belongs to the field of aircraft power supply systems. The structure of the all-electric engine self-powered system is composed of an aero-engine, two starting generators, two sets of AC / DC starting power generation controllers, two 270V high-voltage DC bus bars, an electric energy storage device, a 28V low-voltage DC bus bar, a multi-port bidirectional DC / DC converter, a multi-port bidirectional DC / AC inverter, an oil pump motor and an electric actuator. The self-powered system is isolated from an external power supply system. And controlling the self-powered system according to the control strategy. The self-powered system architecture and the control strategy can effectively enhance the reliability and the stability of an engine key load power supply network, and improve the power supply quality of the power supply system; voltage fluctuation on the high-voltage bus bar is suppressed; energy feedback and efficient utilization are realized; the system cost and complexity are reduced, and the fault-tolerant capability and reliability of the self-powered system can be effectively improved.

The utility model provides an energy feedback time-phased output system of a gantry crane, and belongs to the technical field of energy utilization. The portal crane energy feedback time-phased output system comprises a generator, a rectifier, a storage battery, a first switch, an inverter module, an electric quantity monitoring module and a control module, the input end of the rectifier is connected with the output end of the generator; the output end of the rectifier is connected with the input end of the storage battery; the first end of the first switch is connected with the output end of the storage battery, the second end of the first switch is connected with the input end of the inverter module, and the control end of the first switch is connected with the control signal output end of the control module; the electric quantity monitoring module is connected with the storage battery; the output end of the inverter module is used for grid connection; the generator is configured to convert mechanical energy of the crane into electrical energy. According to the invention, the stability and reliability of energy feedback can be improved.

The invention relates to the technical field of robot actuators, and particularly discloses an integrated joint module with torque sensing and energy self-recovery functions and a design method. The design method comprises the steps that a physical framework of the joint module is constructed; a nonlinear elastic torsion model and a dynamic friction model of the harmonic reducer are constructed, and torque is calculated and derived; calculating a physical sampling torque; fusing the derived torque and the physical sampling torque by adopting an adaptive Kalman filtering mode to obtain a final torque signal; an energy feedback model in a motor braking mode is constructed, and when the joint module decelerates or is dragged by external force, the instantaneous flow of recyclable electric energy is calculated in real time based on the energy feedback model; a super capacitor and a DC-DC converter are introduced for energy recovery; and when the joint module is started or enters an acceleration stage, the energy stored by the super capacitor is released to the direct current bus. Nonlinear transmission interference caused by a harmonic reducer can be effectively eliminated, and in-situ recovery and peak power assistance of braking kinetic energy can be achieved.

The invention discloses a braking energy recovery control method for an electric vehicle. The method comprises the following specific steps: 1, acquiring an accelerator, a brake pedal, a parking signal, a vehicle speed signal and a battery load value; 2, starting a braking energy feedback mode; 3, the current vehicle speed value is obtained, and the braking torque is obtained; 4, the current state of the power battery is obtained, and the limit braking torque of the power battery is calculated; 5, the current rotating speed of the driving motor is obtained, and the limiting braking torque of the driving motor is calculated; 6, obtaining the maximum feedback torque limit value of the driving motor; 7, comparing the braking torque, the power battery limit value braking torque, the driving motor limit value braking torque and the driving motor maximum feedback torque limit value to obtain a minimum value Tmin; 8, acquiring a feedback torque value Trq of the drive-by-wire ACBS; step 9, comparing the minimum value Tmin and the torque value Trq, and taking the maximum value T as the final feedback torque; and tenthly, electron rotation is controlled to conduct energy recovery according to the final braking target torque.

The invention discloses a vehicle energy recovery method and device, a vehicle, electronic equipment and a storage medium, the vehicle comprises a suspension motor and a driving motor, and the method comprises the steps that in response to an energy feedback mode configuration instruction, the target control force of the suspension motor is determined based on the suspension speed; under the condition that the target control force is located in the energy feedback interval, the charging power of a suspension motor and the feedback power of a driving motor are obtained; and under the condition that the charging power of the suspension motor and the feedback power of the driving motor meet a first preset condition, energy recovery working conditions of the suspension motor and the driving motor are determined based on the vehicle running working conditions, and energy recovery control is conducted on the corresponding motor based on the energy recovery working conditions. According to the energy recovery method, the energy generated by vibration of the vehicle suspension is considered, and the energy recovery control of the whole vehicle is completed through the cooperation between the energy recovery of the suspension motor and the energy recovery of the driving motor.

The invention provides a high-efficiency battery pack active equalization topology, and belongs to the technical field of battery management. The high-efficiency battery pack active equalization topology provided by the invention comprises n energy storage units, each energy storage unit comprises an energy storage element monomer or module, a three-level unit, a coupling capacitor, a transformer and a current-limiting resistor, the energy storage element comprises but not limited to a battery monomer, a battery module and a battery cluster, and the n energy storage elements can be connected in series. According to the scheme, the voltage stress borne by each switching tube is reduced to half from the input voltage through the three-level topological structure, the switching loss is effectively reduced, when the topology operates in a balanced mode, the current flows from the high-voltage end to the low-voltage end, then the energy is fed back to the primary side energy storage element through the transformer, and the energy storage efficiency is improved. Therefore, the terminal voltage of each monomer or module is balanced, the energy loss of the system is effectively reduced, and the balancing efficiency is improved.

The present application belongs to the technical field of shock absorber, and particularly relates to a kind of special vehicle smoothness parameter collaborative control method, comprising: step 1: establish the theoretical model of energy feedback shock absorber, determine its shock absorbing and energy feedback characteristic representation formula;Step 2: in combination with the original design method of shock absorber, determine the parameter constraint range of energy feedback shock absorber;Step 3: according to the energy feedback shock absorber shock absorbing and energy feedback characteristic representation formula and its parameter constraint range, establish the multi-objective optimization model of energy feedback shock absorber parameter;Step 4: according to the multi-objective optimization model of energy feedback shock absorber parameter, produce optimization solution set, determine weight in combination with vehicle type and smoothness demand, obtain the multi-objective optimization solution of energy feedback shock absorber parameter, finally realize semi-active suspension energy feedback and smoothness parameter collaborative control.The method can improve the search accuracy of optimal solution, and support the processing of optimization problems with strict constraints and small feasible region.

1. Name of this design product: Battery Cell Energy Feedback Charge and Discharge Test System. 2. Purpose of this design: For battery cell energy feedback charging and discharging testing. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses an offshore wind power UPS multi-mode smooth switching and battery active equalization system, and relates to the technical field of battery optimization management. A deep cooperative intelligent control system is constructed, closed-loop fusion is carried out on multi-mode smooth switching logic of a UPS and battery active equalization management, prospective pre-equalization is carried out based on model prediction control in a normal mode, and it is ensured that a battery pack is always in the optimal state that backup power supply can be put into use at any time; in the transient process of switching to the battery mode, a parameter self-adaptive dynamic equalization algorithm is adopted, and voltage differentiation caused by large current impact is rapidly inhibited; and an energy feedback mode is combined with an equalization strategy to realize unification of energy saving and battery health, so that zero flash guarantee in a UPS working mode switching process is realized, the full life cycle of the battery is effectively prolonged, and stable power supply is provided for an offshore wind turbine generator.

The invention provides a vehicle energy feedback adjusting method, a vehicle control system and a storage medium, and belongs to the technical field of vehicle control, and the method comprises the steps that the target feedback deceleration and the allowed feedback deceleration of a vehicle in the current state are obtained; the absolute value of the target feedback deceleration and the absolute value of the allowable feedback deceleration are reduced to serve as first target deceleration; the first target deceleration is smoothed to limit the change rate of the first target deceleration, and a second target deceleration is obtained; and the actual deceleration of the vehicle is obtained, and the feedback torque of the motor is adjusted based on the deviation between the second target deceleration and the actual deceleration, so that the actual deceleration follows the second target deceleration. By the adoption of the method, precise closed-loop control over the vehicle deceleration can be achieved, feedback torque is made to adapt to different road conditions and load changes, deceleration fluctuation is effectively restrained, and the driving comfort is remarkably improved while the energy recovery efficiency is improved.

The invention discloses a cluster well group mechanical production well reverse power generation recycling system which comprises an oil field power distribution network, the output end of the oil field power distribution network is electrically connected with a step-down transformer, the output end of the step-down transformer is electrically connected with a rectifier module, and the output end of the rectifier module is electrically connected with a brake resistor module, an energy feedback module and a plurality of inverter modules. The energy feedback module is further electrically connected with the input end of the rectification module, the inversion modules are arranged in parallel, the output end of each inversion module is electrically connected with a motor, and the output end of each motor is electrically connected with oil extraction equipment. The invention aims to provide a cluster well group mechanical production well reverse power generation recycling system, and solves the problems that when existing oil production equipment works, reverse power generation is high in power consumption and cannot be recycled, and energy waste is caused.

The invention relates to a method for operating a low-voltage electrical system (1) of a vehicle. According to the invention, when energy feedback into the low-voltage electrical system (1) is detected, at least one electrical energy consumer (V2, V3) is switched on by means of an electrical power distributor (2).

This invention relates to the field of ultrasonic directional propagation technology, specifically to a directional acoustic focusing system based on a U-shaped cavity. The system includes designing the U-shaped cavity, determining its geometric parameters, dimensions, and frequency influences, generating a geometric configuration diagram, configuring the material and angle of the reflective surface accordingly, forming a design scheme, simulating and optimizing the acoustic wave propagation path, adjusting the reflective surface to reduce energy loss and offset, evaluating the energy distribution and accuracy of the focusing area, and finally adjusting the reflective surface based on the evaluation report feedback to correct the focusing offset and generate the final focusing scheme. This invention achieves phase synchronization and energy coupling of multiple reflections through parametric design of the cavity geometry and dynamic analysis of the acoustic wave path. It matches the reflective surface angle and material to construct a stable multi-path focusing mechanism. Through dynamic path correction and energy feedback regulation, it forms a high-precision, balanced focus in the target area, improving the system's focusing stability, energy efficiency, and sound field control capabilities at different frequencies.

The application is a current source type inverter topology structure with energy feedback loop and a control method. The application relates to the technical field of power electronics and motor control, and a switching tube and a diode are used to provide stable DC side current, so that the controllable operation of the motor is ensured, and on this basis, only a switching tube and a resistor are used to realize the discharge of motor feedback energy, so that the safety and reliability of the motor four-quadrant operation are ensured under the condition of the simplest topology and low cost. Compared with the existing current source inverter system with DCDC front stage, only two switching tubes and a diode are used in the realization of the function, the system is simplified, the reliability of the system is increased, and the cost is reduced.

The application discloses a recycled asphalt pavement carbon emission analysis method and system based on quantum simulation, and relates to the technical field of road engineering and carbon emission quantification analysis, and comprises the following steps: establishing a quantum simulation energy feedback time sequence in a quantum simulation carbon emission analysis process, recording energy change information and extracting time distribution of energy fluctuation stages to generate an energy change record; point-by-point comparing energy fluctuations based on the energy change record to identify energy self-excitation enhancement regions, locking energy resonance cores and recording energy drift moments to generate an energy resonance anchor point list. The application realizes dynamic monitoring and phase stability control of energy transmission paths by constructing a quantum simulation energy feedback time sequence and rhythm intervention mechanism. Through energy resonance anchor point extraction, false lock loop identification and entropy release adjustment, energy accumulation and resonance instability are effectively prevented, the stability and precision of quantum simulation carbon emission analysis are improved, and high-reliability dynamic support is provided for recycled asphalt pavement carbon emission evaluation.

A kind of electric permanent magnet + vacuum combined mooring system for wharf, mainly by combined suction cup, combined cantilever, combined shore base, electric control unit and other components, can use electric permanent magnet + vacuum combined suction cup, tripod + scissors combined cantilever, electric lifting + counterweight combined shore base, visual + ultrasonic wave + tension and compression force + displacement sensor, master control + central control + control terminal of the type control, according to wharf wind speed / flow rate / wave height / tide level / visibility, ship request of berthing / departure, binocular machine vision, ultrasonic ranging, cantilever seat displacement, cantilever tension and compression force, ship side plate magnetic flux leakage and other information, through suction cup magnetization / anti-magnetic flux leakage / vacuum auxiliary control, cantilever telescoping / energy feedback control, cantilever seat lifting control and other algorithms, realize the automatic mooring of sea port or inland river wharf without cable, ship roll reduction and feedback electric energy.

The invention provides a direct-current transformer starting and stopping control method, system and device and a medium, and the method comprises the steps: carrying out the safe pre-charging of a capacitor through a hierarchical control strategy, and completing the starting of a high-voltage side and a low-voltage side; and quickly and safely discharging the voltage of the energy storage capacitor in a shutdown stage based on a distributed energy release scheme of an internal resistor, and completing shutdown control. Through a hierarchical control strategy and multi-stage self-adaptive charging of a high-voltage side, capacitor voltage balance and current limiting requirements can be considered in a starting stage; based on a distributed energy release scheme of an internal resistor, rapid and safe release of the voltage of an energy storage capacitor in an outage stage is realized, and the problems that single-stage charging is mostly adopted for high-voltage side starting, capacitor voltage balance and current limiting requirements are not considered, and an outage discharge scheme lacks adaptation to alternating-current and direct-current coupling characteristics, resulting in an energy feedback risk are solved.