2053 results about "Power switching" patented technology

The invention provides a communication master control system based on intelligent power supply, and relates to the technical field of communication, and the system comprises a power supply monitoring module which is used for monitoring the commercial power supply state of a communication base station, and automatically controlling a power switching circuit to switch a power supply mode to a standby battery power supply mode when the commercial power interruption is detected; the state acquisition module is used for acquiring the charge state, the discharge efficiency and the health state data of the standby battery in real time in a standby battery power supply mode, and acquiring the residual capacity, the actual discharge capacity and the life index of the battery; and the load receiving module is used for uploading the residual capacity, the actual discharge capacity and the life index of the battery to the communication main control unit, and receiving load data in the current communication network at the same time. According to the invention, intelligent scheduling of power utilization is realized, and the power supply reliability and stability of the communication system are improved.

The invention discloses a charging pile power supply switching method and equipment based on a micro-grid, and relates to the technical field of electric vehicle charging, and the method comprises the steps: determining a target user according to a preset price threshold value and a region requirement based on the vehicle information of each vehicle in a target charging station before power supply switching; according to the energy storage state parameter and the power supply quality parameter of the current power supply of the target charging station, judging whether the charging demand of the target user is met; if yes, generating and executing a power supply switching strategy based on a power supply in the energy storage system and the first power supply switching rule; and if the power supply does not meet the preset high-quality power supply switching threshold, determining a standby power supply and a charging power supply, and after the charging power supply supplements energy storage to the standby power supply to a safety threshold, executing switching operation according to a preset switching sequence and an energy storage allocation result. By implementing the application, accurate switching and dynamic adaptation of the power supply can be realized, the problems of blind switching of the power supply and mismatching of the power supply capability and the high demand of the user in the prior art are solved while the resource utilization efficiency is improved, and finally the stability and reliability of switching of the power supply of the charging pile in the micro-grid environment are realized.

The invention provides a direct-current group charging control system and a power switching method thereof, and relates to the technical field of electric vehicle charging, and the control system comprises a data interaction controller, a charging module group, a switch module group, a plurality of charging terminals, a direct-current loop module and a direct-current loop controller. According to the method, a data interaction controller controls a switch module group to realize'full matrix 'type dynamic connection between any charging module and any charging terminal according to the real-time requirement of each terminal, and an idle terminal is electrically isolated by combining a direct current loop module; and power switching is carried out by adopting safety strategies such as double-threshold hysteresis control, voltage pre-synchronization and zero-current breaking. According to the invention, the problems of inflexible power scheduling and insufficient idle terminal safety of the existing group charging system are solved, safe, efficient, stable and dynamic distribution of the charging power in a global range is realized, and the utilization rate and the operation safety of the system are improved.

The invention discloses a control method and system based on transient impact suppression in main and auxiliary power switching, and relates to the technical field of ship power system.The method comprises the steps that dynamic parameters of a ship main and auxiliary power system are collected in real time through a multi-source sensor, transient feature extraction and correlation analysis are carried out on the dynamic parameters, and transient impact suppression is carried out on the dynamic parameters; constructing a multi-dimensional impact feature library containing an impact strength quantized value, a power sudden change gradient and an energy compensation demand; and based on the impact feature library, generating a hybrid energy storage cooperative control instruction set through a dynamic weight distribution algorithm, executing a staged transient suppression control sequence in a preset time window, and executing the staged transient suppression control sequence in the preset time window. According to the control method and system based on transient impact suppression in main and auxiliary power switching, stable operation of a ship power system is guaranteed, and meanwhile the service life of equipment is prolonged.

A communication system includes a first controller and a second controller connected to each other. The first controller receives electric power from a power source through a power switch. The second controller includes a current detection unit, the management frame obtaining unit, the disconnection determination unit, and the power supply disconnection unit. The current detection unit detects a consumed current value of the first controller. The management frame obtaining unit obtains a management frame including activation information of the first controller. The disconnection determination unit determines, based on the consumed current value and the activation information, whether a predetermined disconnection condition is met. The power supply disconnection unit switches the power switch to a disconnected state when the disconnection determination unit determines that the disconnection condition is met.

The invention belongs to the technical field of aircraft control, particularly relates to a range extender control system for an unmanned aerial vehicle and a controller, and aims to solve the problems of limited endurance, poor flight stability and the like caused by discontinuous energy supply and power response lag. The system comprises a range extender power source module, an electric energy conversion and distribution module, a flight state sensing module, a load power prediction module, a multi-target optimization scheduling module and a closed-loop feedback execution module. Through flight state real-time perception and load power prediction based on a recurrent neural network, an optimal power generation instruction is generated in combination with multi-target optimization scheduling, and precise rotating speed tracking is realized through adaptive PID control. A fuel consumption, power supply smooth switching and battery health combined cost function is introduced, dynamic weighting is carried out according to task types, and the cruising ability and the system robustness are improved; the system has the functions of fault emergency response, power battery hot plug and model online updating, and safety and maintainability are enhanced.

A power tool is provided including: a tool housing; a motor disposed within the tool housing; a battery receptacle arranged to be coupled to a battery pack having a rated capacity; a power switch circuit disposed between the battery receptacle and the motor; and a controller that controls the power switch circuit to drive the motor. The controller is configured to: determine or receive a pack ID associated with the rated capacity of the battery pack; set a braking profile for electronically braking the motor based on the pack ID; and apply an electronic brake to the motor in accordance with the set braking profile upon detection of an event associated with stoppage of the motor.

The invention discloses a rectification feedback control method and system. The method comprises the following steps: acquiring a power grid voltage and an inversion output current, and obtaining an active current through phase locking and coordinate transformation; whether feedback is started or not is determined by judging whether id is lower than a first threshold value or not, if yes, a driving signal is generated according to the phase of the power grid, a power switch device in the rectification feedback unit is conducted, and energy is fed back to the power grid; if id is higher than the second threshold value, the unit is turned off. According to the method, by detecting the energy flow direction in real time, self-adaptive on-demand switching of the rectification feedback unit is achieved, unnecessary switching actions of a power device are effectively reduced, switching loss and the aging speed of the device are reduced, and therefore system efficiency and reliability are improved, the service life of the device is prolonged, and energy waste is avoided.

The utility model discloses a dual-power switch power distribution system and a control device and an air conditioner thereof, and the device comprises a main power supply and a standby power supply which are connected to a load side circuit breaker after passing through a dual-power switch system; the standby power supply is also connected to the first connecting end of the bypass system; the second connecting end of the bypass system is connected to a circuit breaker of a second-level load and a common end of the second-level load; under the condition that short-circuit faults occur between the main power supply and the load-side circuit breaker and between the standby power supply and the load-side circuit breaker, the dual-power switch system disconnects the main power supply and the standby power supply, and the bypass system controls the standby power supply to supply power to the second-level load through the circuit breaker of the second-level load. According to the scheme, the bypass system is added to the dual-power switch power distribution system, the bypass system is used for supplying power to the second-level load, namely the important load when the short-circuit fault occurs between the dual-power switch and the load circuit breaker, and the reliability of the dual-power switch power distribution system is improved.

The invention relates to the technical field of wind power generation. The invention provides an emergency yaw and automatic crosswind method and system for a wind turbine generator. The method comprises the following steps: monitoring the on-off state of a safety chain in real time, and activating an emergency power supply switching module when detecting that the safety chain is disconnected; synchronously acquiring unit vibration spectrum, impeller rotating speed, environment wind speed and cabin load distribution data, and generating dynamic risk assessment parameters based on a multi-source signal fusion algorithm; inputting a hierarchical control instruction to a yaw driver according to a comparison result of the risk assessment parameter and a preset threshold value; and in the automatic crosswind control stage, the yaw rate and the angle offset are dynamically adjusted based on the blade root bending moment real-time feedback and the wind speed change rate, so that the unit maintains the aerodynamic load balance in the non-windward state. The problems that after a safety chain of an existing wind turbine generator is disconnected, yaw capacity is completely lost, emergency crosswind protection or fault recovery cannot be achieved, and a traditional emergency yaw scheme is high in cost, complex in maintenance, slow in response, difficult to adapt to complex working conditions and the like are solved.

The invention relates to the technical field of electric drive axle control, and discloses an electric drive axle motor and gearbox integrated control system based on an SIC module. The system comprises a power distribution module, a torque coordination module, a temperature field balancing module, an efficiency optimization module and a system integrated control module. The power distribution module integrates the motor power, the transmission ratio of a gearbox and the axle end torque requirement according to the real-time state of the electric drive axle, distributes regulation and control values and parameters, and generates a power control parameter set; the torque coordination module analyzes the influence of power switching on the system stability, adjusts the torque transmission balance and generates a coordination parameter set; the temperature field module analyzes a thermal field of the SIC module, adjusts heat dissipation parameters and generates a temperature regulation and control result; the efficiency optimization module extracts efficiency fluctuation and energy consumption offset to generate an optimization data set; and the system integration module analyzes the overall efficiency and optimization time, and generates an integrated control data table. According to the system, cooperative control of the motor and the gearbox is achieved, SIC heat dissipation is optimized, and the efficiency and reliability of the system are improved.

The invention discloses a power factor correction control circuit and a household electrical appliance, and the circuit comprises a rectification module which is connected to an AC power supply; the first end of the switching device is electrically connected with the first output end of the rectification module through an inductance device, and the second end of the switching device is electrically connected with the second output end of the rectification module through a resistance device; the first end of the load circuit is connected to the first end of the switching device, and the second end of the load circuit is connected to the second end of the switching device; the controller is electrically connected with the control end of the switching device, and is configured to obtain the input voltage of the load circuit and the output current of the rectification module; according to the input voltage and a preset voltage reference value, the step-up rate is obtained through calculation, and the preset voltage reference value is obtained through feedback adjustment according to the step-up rate obtained through calculation and a preset step-up rate reference value; and determining a control signal of the switching device according to the boost rate and the output current. According to the scheme, the control efficiency of the switching device can be improved.

The invention relates to the technical field of stand-by power supply monitoring, in particular to an output stability monitoring method for a stand-by power supply for an elevator, which comprises the following steps of: judging whether the output stability of a power supply to be tested is abnormal or not by connecting a piezoresistor test loop and utilizing temperature change curve comparison conditions of a piezoresistor under different output working conditions; calculating a performance separation characterization index under each output working condition by using the temperature increment curve relative to the ambient room temperature; analyzing and determining a performance local separation power supply according to an index sequence consisting of the performance separation characterization indexes; and finally, determining an abnormal battery pack according to the internal resistance detection result of each battery pack under the determined disengagement characteristic dominant working condition. And furthermore, the output performance fluctuation condition of the battery pack in the switching operation process of different remaining electric quantities is indirectly quantified, and the dynamic guarantee capability of the standby power supply under the full working condition is comprehensively reflected.

The utility model provides a high-power switching power supply planar transformer with an adjustable turn ratio, which comprises a magnetic core, and a winding component is fixed in the magnetic core; the winding assembly is formed by stacking a plurality of secondary winding copper sheets and a plurality of primary winding copper sheets in a crossed mode, two primary leading-out terminals are arranged on the side portion of the same end of each primary winding copper sheet, and two secondary leading-out terminals are arranged on the end portion of each secondary winding copper sheet. The primary leading-out terminal connects a plurality of primary winding copper sheets in series through a primary fixing bolt, and the secondary leading-out terminal connects a plurality of secondary winding copper sheets in series through a secondary fixing bolt. According to the utility model, a plurality of primary leading-out terminals and secondary leading-out terminals are arranged on the winding, and the primary and secondary turns of the transformer can be flexibly selected by connecting different leading-out terminals; and the tedious process in the PCB winding manufacturing process is omitted, the raw material cost and the production and processing cost are greatly reduced, and the production period is shortened.

The invention relates to the technical field of electric vehicle charging control, and discloses a charging pile power regulation and control method and device, electronic equipment and a storage medium. The method comprises the following steps of: monitoring multi-dimensional time sequence data such as charging voltage, current and battery temperature in real time, performing state segmentation, and calculating the similarity between a data sequence of each stage and a standard charging template so as to accurately screen out a stable charging state stage. And extracting a power adjustment amount based on the time sequence characteristic and the fluctuation mode of the stage, fusing the adjustment amount of the environment temperature, the equipment load parameter and the charging power, and dynamically generating a power switching rule by using a fuzzy logic controller. And finally, smooth switching and cyclic adjustment of the power levels of the charging piles are realized according to the rule. According to the method, the accuracy and the anti-interference capability of charging state identification are improved, and the adaptability and the collaborative optimization capability of power regulation to a complex environment and a power grid condition are enhanced, so that the charging efficiency and the power grid stability are both considered on the premise of ensuring the safety of the battery.

The invention discloses a tool switching device and a tool switching method, and belongs to the technical field of robots. The tool switching device comprises a mechanical arm, a tool mechanism, a base and an electric control assembly. A first magnetic joint is arranged at the tail end of the mechanical arm; the tool mechanism comprises a tool body, a second magnetic connector and a third magnetic connector, wherein the second magnetic connector and the third magnetic connector are arranged on the two sides of the tool body respectively and electrically connected with the tool body. A fourth magnetic connector is arranged at the top end of the base; the electric control assembly is electrically connected with the first magnetic suction connector and the fourth magnetic suction connector. Wherein the first magnetic suction joint can be in magnetic suction butt joint with the second magnetic suction joint to realize electric connection, and the third magnetic suction joint can be in magnetic suction butt joint with the fourth magnetic suction joint to realize electric connection. By means of the design of magnetic attraction butt joint and connectors on the two sides of the tool mechanism, uninterruptible power switching of the tool between the mechanical arm and the base can be achieved, the connecting speed, precision and reliability during switching can be improved, and online maintenance, state keeping and plug and play of the tool mechanism can be achieved.

A dual power switching system selects a first power source or a second power source to supply power to a load coupled to an inductive device. The dual power switching system includes a first thyristor, a second thyristor, a third thyristor, a fourth thyristor, and a controller. The controller calculates a total magnetic flux according to a current magnetic flux of the inductive device and an expected magnetic flux of the second power source. When the power-supplying source is switched, the controller turns off the first thyristor and the second thyristor, and determines whether a commutable time is reached according to a power parameter of the first static transfer switch and the second static transfer switch. When the commutable time is reached, the controller correspondingly turns on at least one of the third thyristor and the fourth thyristor according to the total magnetic flux being less than a threshold.

The invention provides a control method and device for power switching of charging modules, a storage medium and an application power management system, the system comprises a plurality of charging modules and switching modules, every two charging modules of the plurality of charging modules are connected through the switching modules, and the switching modules are connected with the charging modules. The switching module is used for controlling connection and disconnection among the plurality of charging modules, and the method comprises the following steps: obtaining a power demand of a target charging terminal and operation parameters of the plurality of charging modules, determining the number of the charging modules to be input for meeting the power demand according to the power parameters, the method comprises the following steps: firstly, operating a plurality of charging modules, calculating comprehensive health degrees corresponding to the plurality of charging modules based on operating time and operating efficiency, then, determining switching priorities corresponding to the plurality of charging modules, determining the charging modules needing to be switched according to the switching priorities, and finally, controlling a switching module to perform switching control on a target switching charging module. Individual modules in the plurality of charging modules can be prevented from being overused, and the service life of the charging modules is prolonged.

The invention relates to the technical field of power electronics and electric energy quality management, in particular to a TNPC-UPQC multi-target finite set prediction control method and system based on midpoint potential self-balancing, and the method comprises the steps: building a parallel side current prediction model based on a KVL equation, and building a series side voltage prediction model based on a voltage compensation relation; constructing a direct-current side total voltage prediction model based on a power balance principle, and constructing a neutral-point potential prediction model by accurately calculating a neutral-point current; the method comprises the following steps: constructing a model multi-objective cost function, determining cost function values corresponding to various switching states of the converter by adopting the multi-objective cost function, selecting an optimal switching state which enables the cost function to be minimum, applying the optimal switching state to the converter, and directly controlling the on and off of a corresponding power switching device. In order to dynamically coordinate the priority of each target under different working conditions, a self-adaptive inertia weight adjustment algorithm is introduced, and the algorithm can effectively balance the global search capability and the local search capability.

An emergency backup power source for an electrically controlled and motorized window shade unit includes an input power switch, and charge and discharge control circuit, and a supercapacitor bank. During normal operation a nominal voltage level from a main power source of the aircraft is provided directly to the window shade unit through the input power switch, and the supercapacitor bank is charged. The input voltage is monitored by the emergency backup power source, which controls the input power switch. When the input voltage drops below a threshold level, the input power switch is opened and the charge and discharge circuit operates to provide an emergency output voltage to the window shade unit from the supercapacitor bank so that the window shade can be fully opened or closed, as is required.

The utility model discloses a service life testing machine for a switch elastic sheet, which belongs to the technical field of switch elastic sheets and comprises a workbench, and the rear end of the workbench is connected with an adjustable pressing mechanism. The front end of the workbench is fixedly connected with a control panel, an indicating lamp, a power switch, a starting switch and a stopping switch. The upper end of the workbench is fixedly connected with a bearing plate; the adjustable pressing mechanism comprises an adjustable driving assembly, a connecting assembly and a pressing assembly, and the adjustable driving assembly is connected to the rear end of the workbench; the front end of the adjustable driving assembly is connected with a connecting assembly; the upper end of the connecting assembly is connected with a pressing assembly. In this way, the adjustable driving assembly drives the connecting assembly to drive the pressing assembly to move up and down, the pressing assembly cooperates with the pressure bearing plate to press the switch elastic piece, and meanwhile the service life of the switch elastic piece is obtained through counting of the control panel; the frequency of pressing the switch elastic sheet by the pressing assembly is adjusted through the adjustable driving assembly, the reasonable use frequency is determined according to the test result, and the service life of the switch elastic sheet is prolonged.

The invention provides a DC-DC forward boost-buck power conversion circuit based on cascaded Cuk topologies, and relates to the technical field of power electronic conversion, the circuit is mainly formed by cascading two Cuk topologies sharing one inductor, and the circuit also comprises a power supply end, a load end and a same-frequency driving signal generator. The same-frequency driving signal generator controls the two power switch tubes in the Cuk topology through a same-frequency signal, and the output voltage is adjusted by adjusting the duty ratio. The circuit not only keeps the advantage of continuous input and output current of a traditional Cuk circuit, but also converts the polarity of the output voltage from the reverse direction to the forward direction, and meanwhile, the voltage gain is remarkably improved, so that forward voltage conversion can be efficiently and smoothly realized. The circuit structure has the characteristics of high gain, forward output, continuous current, simple control and the like, and is suitable for occasions requiring high-efficiency and high-quality electric energy conversion, such as new energy power generation and energy storage, electric automobiles, precision industry and the like.

The invention provides a bidirectional bootstrap power supply circuit and method and a power switch device driven by self power supply. The circuit comprises a bidirectional power taking module, a first energy storage module and a second energy storage module. The bidirectional power taking module is connected between the first power supply end and the second power supply end; the first energy storage module and the second energy storage module respectively comprise a switching tube and an energy storage capacitor, the switching tube is connected between the bidirectional power taking module and the first end of the energy storage capacitor, the first end of the energy storage capacitor is connected with a power supply output end, the second end is connected with a power supply end, and the power supply output end supplies power to driving signals of the bidirectional switching power device; when a potential difference exists between the two power supply ends, the circuit takes power from the high-voltage end through the bidirectional power taking module, charges the corresponding energy storage capacitor by using the switch tube or the body diode thereof, and establishes a driving power supply voltage; when the power device is conducted and the potentials at the two ends are close, the electric energy is bidirectionally transferred between the two energy storage capacitors. An external isolation power supply can be omitted, the power supply architecture of the bidirectional power device is simplified, and the cost is reduced.

The invention discloses a communication protocol switching system, method and device, computer equipment and a storage medium, and the system comprises a main control module, a plurality of communication protocol switching chips, and a plurality of dual-path power switch chips which are in one-to-one correspondence with the plurality of communication protocol switching chips, each communication protocol switching chip is used for converting a non-target communication protocol different from a target communication protocol into a target communication protocol which can be processed by the main control module; the control end of each two-way power switch chip is electrically connected with the main control module and is used for receiving a control signal from the main control module and controlling the on-off of a power supply of the corresponding communication protocol switching chip and the on-off of a signal path between the communication protocol switching chip and the main control module under the control of the control signal; when a communication protocol switching chip is not selected, power supply disconnection and signal path isolation are realized, and signal interference among different communication protocols is avoided. The communication stability can be effectively improved.

The invention relates to a switch module control circuit and an energy storage power supply. The switch module control circuit comprises a power supply circuit, a locking module, a detection module and a driving module. The power supply circuit is arranged between a power supply end and a load end, and a switch module and an overcurrent protection element are arranged on the power supply circuit; the overcurrent protection element is used for being disconnected when the current output by the power supply circuit is larger than a preset current threshold value. The locking module is used for outputting a locking signal when the driving signal of the switch module is a high level, and the high level is a corresponding signal for driving the switch module to be conducted; the detection module is used for bypassing the locking signal when the power supply circuit is switched on; and the driving module is used for controlling the switch module to be switched off when the locking signal is received, and controlling the switch module to be switched on based on the driving signal when the locking signal is not received. By adopting the switch module control circuit, the reliability of the switch module on the power supply circuit of the energy storage power supply can be improved.

The utility model discloses a new energy vehicle and in-vehicle discharge system thereof, the system comprises a bidirectional vehicle-mounted charger and a power battery, the input end of the bidirectional vehicle-mounted charger is connected with the output end of the power battery, the bidirectional vehicle-mounted charger is internally provided with a first discharge loop and a second discharge loop, and the second discharge loop is connected with the output end of the power battery. The output end of the first discharging loop is connected with a first charging port, and the output end of the second discharging loop is connected with a second charging port; the first discharge loop and / or the second discharge loop are / is internally provided with a switch and a pre-charging loop connected to the two ends of the switch in parallel. The pre-charging loop is additionally arranged in the discharging loop of the system, so that the voltage difference between the two ends of a switch contact in the discharging loop is controlled within a reasonable range, and uninterruptible power switching from single-loop discharging to double-discharging loop is achieved.

The invention discloses a power factor correction control circuit and a household electrical appliance, and the circuit comprises a rectification module which is connected to an AC power supply; the switching device is electrically connected with the rectification module; the first end of the load circuit is connected to the first end of the switching device, and the second end of the load circuit is connected to the second end of the switching device; the controller is electrically connected with the control end of the switching device, and is configured to obtain the input voltage of the load circuit and the output current of the rectification module; according to the input voltage and a preset voltage reference value, a step-up rate is calculated; inputting the input voltage and the voltage reference value into a preset current compensation module, and calculating to obtain a current compensation value; and calculating a control signal of the switching device according to the boost rate, the output current and the current compensation value, so that the switching device executes conduction control according to the control signal. According to the technical scheme, the probability that high voltage generated by overshoot damages a switching device can be reduced.

The invention provides a high-power power supply AC-DC switch surge current suppression method and system and related equipment, and relates to the technical field of switching power supplies, and the method comprises the steps: carrying out the parameter initialization after a power supply system is powered on, obtaining a surge current suppression parameter, and starting an nth AC-DC power module in N AC-DC power modules; the method comprises the following steps: monitoring total input current on an alternating current input bus of a power supply system in real time, and circularly executing the following operations until N AC-DC power modules are all started: determining whether the nth AC-DC power module enters a steady-state operation state or not; when it is determined that the nth AC-DC power module enters the steady-state operation state, and n is smaller than N, whether the n AC-DC power modules enter the steady-state operation state or not is determined; and under the condition that it is determined that all the n AC-DC power modules enter the steady-state operation state, performing cooperative suppression operation on the (n + 1) th AC-DC power module in the N AC-DC power modules according to the surge current suppression parameters so as to start the (n + 1) th AC-DC power module.

A gate driver includes a switching circuit outputting a gate driving voltage to a gate of a semiconductor power switching device (IGBT) via a series gate resistor. The gate driver further includes an external controllable capacitor circuit that is coupled at the gate of the semiconductor power switching device to provide an adjustable external gate capacitance in parallel with a parasitic gate or input capacitance of the IGBT. The capacitor circuit may be controlled by one or more electrical signals to vary the external gate capacitance and thereby the characteristics of a switching operation.

The invention discloses a voltage compensation method, a voltage compensation circuit and electronic equipment. The voltage compensation method comprises the following steps: acquiring bus voltage in a power switch circuit and energy storage current in an energy storage compensation circuit; obtaining a bus amplitude limiting voltage target value by using the bus voltage target value and the bias adjustment value, and subtracting the bus voltage from the bus amplitude limiting voltage target value to obtain a bus amplitude limiting voltage error value; performing proportional integral operation and amplitude limiting processing on the bus amplitude limiting voltage error value to obtain an energy storage current target value, and subtracting the energy storage current from the energy storage current target value to obtain an energy storage current error value; performing proportional integral operation on the energy storage current error value to obtain a current regulation output value; and a compensation control signal is obtained by using the current regulation output value and is used for triggering the energy storage compensation circuit to change the charging and discharging states, so that the bus voltage is compensated and regulated to a set threshold range. Through the above mode, the voltage compensation method can effectively stabilize the bus voltage within the set threshold range, and the control logic is simple.