430 results about "Power rating" patented technology

A charging method based on intelligent dynamic power allocation. The method comprises: acquiring the current SOC, a real-time power demand, a rated power and infrared position detection information of an electric vehicle; on the basis of the current SOC, the real-time power demand, the rated power and the infrared position detection information of the electric vehicle, and in combination with a dynamic average power allocation strategy, a user first-come-first-served allocation strategy, a reverse SOC threshold value incentive strategy and an overall-power utilization maximization strategy, performing power allocation and generating a corresponding control instruction; and controlling the output of a charger topology switch on the basis of the control instruction. Further disclosed is a multi-gun charger apparatus using the charging method. The charging method includes a moderate power allocation strategy and takes into account the demands of both a charger control system and users, and can effectively improve the overall charging efficiency, reduce the charging time, and improve the utilization rate of charging piles.

The invention discloses a load decomposition method based on fusion feature data enhancement, and the method comprises the steps: synchronously collecting the low-frequency power data of a bus end of an electrical loop of a building and the low-frequency power data of all electric equipment ends, and generating a confusion power sequence of similar equipment through Beta distribution mixing, so as to enhance the recognition capability of a model for power overlapping features; based on the power time sequence data, extracting a mutation feature, an equipment state feature and a time coding feature to construct a multi-dimensional feature vector; a CNN-BiLSTM double-branch neural network is adopted, spatial-temporal characteristics are fused through a dynamic weight attention mechanism, and equipment state classification and power decomposition tasks are jointly optimized. In practical application, bus end power data is input, and the operation state and power distribution of each electric device are obtained. According to the method, an adversarial training strategy and a gating feature fusion mechanism are innovatively introduced, the load decomposition performance in a complex power utilization scene is remarkably improved, and the method is particularly suitable for identification and power prediction of equipment with similar rated power.

The invention discloses a low-cost charging pile topology for a fast charging-slow discharging scene of an electric vehicle and a modulation strategy of the low-cost charging pile topology. According to the low-cost charging pile topology, a group of half-bridge type shunt diodes are connected in parallel to each phase of main bridge arm of a traditional T-shaped three-level converter. In the discharging mode, the charging pile is consistent with a traditional T-type three-level operation state, and works in a slow-release scene with rated power and below. In the charging mode, the charging pile continuously shunts the main bridge arm power device by using the additionally arranged shunting diode, so that the current stress and thermal stress of the main bridge arm power device are reduced; and through a self-adaptive modulation strategy of three-level / two-level modulation mode switching, the loss distribution of a power device is optimized, the active power output capability of the charging pile in a charging mode is improved, the fast charging operation of the charging pile with over-rated power is realized, the equipment capacity utilization rate of the charging pile is fully excavated, and the method has remarkable engineering application value.

The invention discloses a method and a device for detecting networking and grid-connected capabilities of a networking type energy storage system, and belongs to the field of power system detection. The method comprises the following steps: disconnecting the energy storage system from an external power grid, testing whether the energy storage system is independently started or not, and establishing a stable voltage; a dynamic power compensation algorithm is adopted to ensure that the voltage and the frequency are kept stable under load fluctuation, and a time domain response analysis method is adopted to ensure that the recovery time is less than or equal to 200ms; the grid-connected power is gradually increased or reduced, and the adjustment and response capability of the system within the rated power range of 0-100% is tested; applying voltage disturbances with different amplitudes, observing the dynamic response of the tested energy storage system, and testing whether the system can operate stably and keep active power output; a main power grid is simulated to be disconnected, whether an energy storage system recognizes and enters an island mode is detected, and the island detection speed is increased by using an improved positive and negative sequence impedance measurement method. A positive and negative sequence impedance measurement algorithm is adopted, the disconnection state of the main power grid is detected more quickly, island detection time is remarkably shortened, and fluctuation of voltage and frequency is reduced.

The invention discloses a synchronous generator excitation method based on mathematical modeling and gain scheduling, and relates to the technical field of synchronous generator control, and the method comprises the steps: building a synchronous generator global dynamic mathematical model comprising the electromagnetic dynamic characteristics of a stator winding, a rotor winding and a damping winding through a modeling module; a discretization simulation platform is constructed in a Matlab / Simulink environment by utilizing a simulation module, model parameters are corrected, dynamic adjustment is realized through a gain scheduling excitation controller, an automatic voltage regulator (AVR) adopts PID (Proportion Integration Differentiation) control and comprises a voltage deviation integral separation strategy, and a power system stabilizer (PSS) dynamically adjusts parameters of a lead-lag compensator based on active power. According to the method, the deviation between a model and an actual system can be reduced by more than 30%, the electromechanical oscillation damping ratio within the rated power range of 10%-150% is increased by 25%-40%, the harmonic content of exciting current is reduced to be lower than 5%, the stability of an electric power system and the electric energy quality are remarkably improved, the engineering practicability is high, and the method is easy to transform and upgrade on an existing synchronous generator.

The invention discloses a dynamic load balancing method and device for an intelligent charging pile management system, and the method comprises the steps: obtaining the operation parameters of a target area transformer corresponding to the intelligent charging pile management system in a current control period, so as to obtain the real-time total load of the target area transformer in the current control period; dynamically calculating the real-time available capacity of the transformer based on the rated power and the real-time total load of the transformer in the target station area; calculating the predicted available capacity of the transformer in the next control period through a load prediction model based on the historical power data and the external environment variables; and according to the real-time available capacity and the predicted available capacity, dynamically adjusting the operation power of the plurality of accessed charging piles, and expanding the number of the accessible charging piles in a load trough period. By fusing the real-time power grid state and the multivariable predicted future load demand, the dynamic fine adjustment of the power of the charging pile and the prospective expansion of the off-peak access amount are realized, the safety of the power grid is ensured, and the capacity utilization efficiency of the transformer is remarkably improved.

Embodiments employ Artificial Intelligence (AI) techniques to collect and analyze data associated with material input to a solar module recycling system, including e.g., AI model(s) and / or the recycling and recapture of the component materials. Recycling hardware for various functional areas (e.g., junction box / frame / glass removal; chemical / mechanical / physical separation; testing; sorting; cleaning; others) may be integrated to a central engine for processing and / or storage (e.g., in a database). Analysis of module recycling using the AI techniques may consider one or more of the following: module model; module manufacturer; module type (e.g., c-Si versus CdTe); power rating; module history; module label information; predicted / actual market prices; others. An outcome of AI analysis can offer estimates of resultant effect(s) upon speed and efficiency, by which materials travel through the recycling system. One possible benefit is the ability to rapidly optimize system parameters, providing high solar module throughput in the recycling system over time.

The invention relates to the field of semiconductor device testing, and discloses a power device thermal resistance testing method and power device thermal resistance testing equipment, and the method comprises the following steps: controlling an environment to rise to a first preset temperature in a temperature gradient manner, and sequentially applying a calibration current to a power device at each temperature gradient to test a first forward voltage drop of the power device; calibrating the power device according to the temperature value of each temperature gradient and the first forward voltage drop value corresponding to each temperature gradient to obtain a temperature-voltage drop curve; controlling the environment temperature to be a second preset temperature, applying a first rated power to control the power device to reach a heat balance state, applying a calibration current to the power device to test a second forward voltage drop of the power device, and measuring the shell temperature of the power device; and obtaining the thermal resistance of the power device according to the temperature-voltage drop curve, the second preset temperature, the second forward voltage drop, the first rated power and the shell temperature of the power device. According to the invention, the problem of inaccurate thermal resistance test of the power device is solved.

A system and method for operating a fleet of pumps for a turbine driven fracturing pump system used in hydraulic fracturing is disclosed. A method of operating a fleet of pumps associated with a hydraulic fracturing system includes receiving a demand Hydraulic Horse Power (HHP) signal. The demand HHP signal may include the Horse Power (HP) required for the hydraulic fracturing system to operate and may include consideration for frictional and other losses. The method further includes operating all available pump units at a percentage of rating below Maximum Continuous Power (MCP) level, based on the demand HHP signal. Furthermore, the method may include receiving a signal for loss of power from one or more pump units. The method further includes operating one or more units at MCP level and operating one or more units at Maximum Intermittent Power (MIP) level to meet the demand HHP signal.

The invention relates to the technical field of hydroelectric generation, and discloses a power distribution method, device and equipment of a hydroelectric generating set, a medium and a product, the power distribution method of the hydroelectric generating set comprises the following steps: determining a plurality of preliminary power distribution schemes according to the power grid demand power and the rated power of the hydroelectric generating set; determining a target damage index and a target efficiency index corresponding to each preliminary power distribution scheme according to the working condition data of the plurality of hydroelectric generating sets in each preliminary power distribution scheme; fusing the target damage index and the target efficiency index to obtain a health degree corresponding to each preliminary power distribution scheme; according to the health degree, a target power distribution scheme is selected from the multiple preliminary power distribution schemes, and power is distributed according to the target power distribution scheme, the health degree is obtained by fusing the target damage index and the target efficiency index, the target power distribution scheme is selected according to the health degree, and the accuracy of the target power distribution scheme is improved.

The invention relates to the technical field of intelligent control, in particular to a remote control method, device and equipment for a safe, energy-saving and environment-friendly intelligent terminal, and the method comprises the steps: obtaining historical power, rated power, actual power and actual temperature data of a historical time period and a current time period on a parallel branch; according to the difference among the historical power, the rated power and the actual power of the parallel branches, analyzing the load abnormal condition of the parallel branches, and screening the parallel branches to determine abnormal branches and balanced branches; according to the difference between the actual power of the balance branch in the current time period and the historical time period and the difference between the actual temperature data of the current time period and the historical time period, a load balance auxiliary index is obtained by combining the load abnormal condition and the power adjustment degree of the balance branch in the current time period; and performing balance control on the load on the parallel branch according to the actual power, the power adjustment degree and the load balance auxiliary index of all the abnormal branches in the current time period. According to the invention, the load balancing efficiency is improved, and the power utilization safety is ensured.

The invention discloses an active power control method for a flyback topology micro inverter system, and the method comprises the steps: calculating the load power of a load end through a current sampling module, and carrying out the uniform power distribution of a PV primary side branch when the load power is greater than or equal to the rated power of an inverter system; when the load power is smaller than the rated power of the inverter system, the PV primary side branch is closed step by step according to the load power difference; and when the load power is smaller than the minimum set power sum, one PV primary side branch is kept to operate. When the load power is smaller than the minimum set power, all the PV primary side branches are closed, and when the load power is larger than the minimum set power of the PV primary side branch with the lowest minimum set power, the system is started. According to the invention, multi-path regulation and control can be realized, and the control stability of the system is improved. And uniform distribution control, step-by-step adjustment distribution control, minimum power control and active power control are relatively flexible and efficient, so that the service life of the system is remarkably prolonged, and the reliability of the system is remarkably improved.

The invention relates to a flexible DC converter based on a virtual synchronous motor, and a control method and system, and belongs to the technical field of electrical engineering. When an AC system fails, an active amplitude limiting coefficient, a reactive amplitude limiting coefficient and a current amplitude limiting coefficient are obtained through an AC voltage amplitude; multiplying the positive and negative active amplitude limiting coefficients by the rated power of the converter to obtain upper and lower limits of an active power reference value of an active virtual rotating speed control ring controlled by the virtual synchronous motor; multiplying the positive and negative reactive power amplitude limiting coefficients by a reactive power output upper limit of the system to obtain an upper limit and a lower limit of a reactive power reference value of a reactive power droop control ring controlled by the virtual synchronous motor; and multiplying the current amplitude limiting coefficient by the maximum allowable current set value during normal operation to obtain the upper limit of the current reference value of the current inner loop controlled by the virtual synchronous motor. The converter can also operate in a network construction type control mode during a fault period, and the maximum operation capability of equipment is exerted to support transient and steady stable operation of an alternating current power grid.

A charger mounted on an electrified vehicle includes a power converter that converts input electric power supplied from an external charging power source into charging power supplied to a battery mounted on electrified vehicle, and a control device that controls an operation of the power converter, wherein the control device decides a maximum value of the input electric power supplied from the charging power source to the power converter, and intermittently operates the power converter based on the decided maximum value of the input electric power and the rated power of the power converter.

The invention discloses an intelligent dynamic power distribution charging method and a multi-gun charger device. The intelligent dynamic power distribution charging method comprises the steps that the current SOC, the real-time power requirement, the rated power and infrared position detection information of an electric vehicle are acquired; based on the current SOC, the real-time power demand, the rated power and the infrared position detection information of the electric vehicle, power distribution is carried out in combination with a dynamic average power distribution strategy, a user first arrival first arrival distribution strategy, a reverse SOC threshold excitation strategy and a whole machine power maximum utilization strategy, and a corresponding control instruction is generated; performing control output of a charger topology switch based on the control instruction; the method comprises a moderate power distribution strategy, gives consideration to the demands of a charger control system and all parties of a user, can effectively improve the overall charging efficiency, reduces the charging time, and improves the utilization rate of the charging pile.

The invention discloses a load matching method of a tested power supply and related equipment. The method comprises the following steps: acquiring rated voltage, rated current and rated power of a tested power supply, drawing a power supply parameter curve based on the group of parameters, and determining a current turning point from the power supply parameter curve; according to the magnitude relationship between the actual output voltage of the tested power supply and the voltage corresponding to the current turning point, the rated current or rated power is flexibly selected as a reference basis to determine the resistance value of each load in the load box; and finally, selecting a plurality of loads connected in parallel from the load box as test loads according to the actual output voltage, and ensuring that the actual output current of the tested power supply reaches the rated current or the actual output power reaches the rated power. The rated current or the rated power is dynamically switched through the current turning point to serve as a reference basis, the load requirements of the tested power supply in different voltage intervals are accurately adapted, and the adaptability of load matching is greatly improved.

The embodiment of the invention discloses a pressure control method and system for a once-through steam generator of a nuclear reactor, and relates to the technical field of nuclear power. Determining power deviation according to the operation power and the secondary circuit load; according to the power deviation, the rated power corresponding to the nuclear reactor and the rated feed water flow corresponding to the once-through steam generator in the nuclear reactor, pressure regulation information is determined; and adjusting the pressure of the once-through steam generator according to the pressure adjusting information. According to the embodiment of the invention, a PID controller is not needed in the process of determining the pressure regulation information, but the pressure regulation information determined based on the power deviation directly acts on the feed water flow regulation valve, so that rapid and accurate OTSG pressure control can be realized.

The invention provides a module power redundancy dynamic switching control system, and relates to the technical field of power system redundancy control, and the system comprises a plurality of power modules which are connected with a plurality of loads through a switch module; the switching controller is used for calculating the power redundancy in real time according to the total load power of each load and the rated power and the peak efficiency of each currently-input power module, so as to control the action of the switch module; and the number of the currently input power modules is adjusted, so that the power redundancy is greater than zero and is not greater than the minimum value of the rated power of each currently input power module. The method has the advantages that the number of redundant modules can be automatically adjusted according to the load rate, the problem that faults of a traditional non-redundancy scheme are prone to diffusion is solved, the defect that redundancy of a fixed redundancy scheme is insufficient or excessive is avoided, and the average load rate of the modules is optimized to the efficient interval of 60%-80% while reliability is guaranteed.

The invention discloses a hybrid power parameter determination method and device and electronic equipment, and relates to the field of vehicle design, and the method comprises the steps: determining the engine displacement of which the average operation power of an engine is consistent with a target fuel consumption area according to the average operation power, the torque standard deviation, the maximum torque fluctuation value and the fuel type in a vehicle road spectrum; according to the method, the determined engine can work in the interval with higher efficiency, the fuel economy is improved while the conventional power requirement is met, and the engine cost is reduced. The rated power of the motor is further determined according to the maximum operation power in the vehicle road spectrum and the target engine external power, and the target engine external power is the external power corresponding to the target vehicle speed or the target rotating speed under the maximum operation power. And determining the battery capacity according to the rated power of the motor, the climbing duration in the vehicle road spectrum and the battery adjustment coefficient. And on the basis of the engine, motor driving is matched to increase the endurance mileage, and the economy of the whole vehicle is improved.

The invention relates to the technical field of network management, in particular to a switch voltage intelligent monitoring and abnormity regulation and control method and system, and the method comprises the following steps: reading port current and power supply voltage register conversion power consumption, writing the port current and power supply voltage register conversion power consumption into a port meter, comparing the port meter with rated power, and reading input / output and mainboard interface voltage according to an identifier; and positioning continuous periodic voltage change drop nodes, and determining a propagation node sequence by combining sampling time. According to the invention, by reading data conversion of a port current register and a port power supply voltage register and according to a power consumption accumulation result, power supply state judgment is associated with port load change, node voltage change is compared and identified by combining a continuous sampling period, and a voltage drop node is identified by combining a working voltage reference value. And a voltage propagation node sequence is obtained according to the sampling time, and the initial position of the power supply path is identified and is combined with the input voltage of the redundant power supply for register state writing, so that a voltage change source has a path association judgment basis.

The invention provides a coal mine security power supply underground load switching method and system, and relates to the technical field of power supply. The underground load switching method for the coal mine security power supply comprises the following steps: after a ground state monitoring unit determines that a ground substation is in a whole-substation power loss state, an intelligent control unit starts the security power supply; the power supply state monitoring unit monitors the operation state of the security power supply and evaluates to obtain the first real-time maximum output power of the security power supply; the intelligent control unit calculates first system available power according to the first real-time maximum output power and a preset safety coefficient; determining a target load based on the first system available power, the rated power corresponding to each underground load and a preset underground load priority; wherein the sum of the rated power of all the target loads is smaller than the first system available power, and the priority is used for indicating the importance sequence of the underground loads; and the load controller controls the switching system to supply power to the target load.

The invention relates to the technical field of equipment management, in particular to a remote monitoring method and system for a generator set, and the method comprises the steps: analyzing the power generation efficiency of each generator according to equipment parameters of each generator and corresponding local environment parameters; identifying a high-humidity area in the generator room according to the humidity distribution data of the generator room; according to the position data and the historical exhaust flow velocity of each generator, generating a corresponding exhaust influence area; performing spatial overlay analysis on the exhaust influence area and the high-humidity area of each generator, and calculating the heat and humidity synergy degree corresponding to each generator in combination with the historical exhaust temperature and the historical exhaust flow rate of the corresponding generator; generating a priority ranking table according to the power generation efficiency of each generator and the corresponding heat and humidity collaboration degree; and screening a plurality of generators as target generators according to the load power, the rated power of each generator and the priority ranking table. According to the scheme, dehumidification energy consumption can be reduced, the service life of equipment is prolonged, and power generation efficiency is improved.

The invention discloses a design method of a lightweight offshore booster station diesel generator system, and belongs to the technical field of offshore booster station design. Comprising the steps of determining an island operation mode of the offshore booster station; under the island operation mode of the offshore booster station, calculating the calculated load of a diesel generator in a diesel generator system, the rated capacity of an oil storage tank, the size of a diesel engine room and the size between diesel tanks; calculating the rated power of the diesel generator; determining an arrangement mode between the diesel engine room and the diesel tank; according to the rated capacity of the oil storage tank, the rated power of the diesel generator and the arrangement mode between the diesel engine room and the diesel tank, the design result of the lightweight offshore booster station diesel generator system is obtained. The island operation mode can be determined, the rated power of the diesel generator can be accurately calculated, the capacity of the oil storage tank can be accurately calculated, the size between the diesel engine room and the diesel tank and the equipment arrangement scheme are optimized, and the reliability, economy and space utilization rate of the system are improved.

The utility model discloses an excitation power supply and a power converter, and relates to the technical field of excitation fusing. According to the excitation power supply, when the switch is switched off, the energy storage element can be charged through the conversion circuit, so that the storage of electric energy is realized. When the switch is closed, the energy storage element can discharge electricity to the excitation fuse connected with the energy storage element through the switch, an ignition tube in the excitation fuse is ignited, and the fusing function of the excitation fuse is further achieved. Namely, the discharge of the energy storage element can satisfy the transient power required by the action of the ignition tube. Moreover, the electric energy received by the ignition tube is stored by the energy storage element instead of being directly output by the conversion circuit; therefore, the output response speed of the excitation power supply is greatly improved, and the rated power of the conversion circuit can be far less than the transient maximum power, so that the volume and no-load loss of the excitation power supply can be greatly reduced, and the cost of the excitation power supply can also be reduced.

The invention relates to the technical field of electrical data processing, in particular to a generator set relay protection debugging method and related device.The generator set relay protection debugging method comprises the steps that according to the extreme value distribution difference in filtering electrical signals of each electrical device, the distance between each electrical device and all electrical devices in a corresponding preset neighborhood and the cross-correlation value between the filtering electrical signals, the filtering electrical signals of each electrical device are obtained; obtaining a corrected abnormal fluctuation factor of the filtered electric signal of each electrical device; according to the starting and stopping times of each electrical device, the rated power of each electrical device and the service life of each electrical device, the fault probability of each electrical device is obtained; and adjusting a preset time interval through the corrected abnormal fluctuation factor and the fault probability to obtain an adjusted sampling time interval of each electrical device, and performing data acquisition in the relay protection debugging process through the adjusted sampling time interval. According to the invention, the sampling equal-interval accuracy in the relay protection debugging process is improved.

The invention discloses a method for determining a self-consuming power curve of a wind turbine generator, which comprises the following steps of: performing conversion according to an actually-measured wind speed and an actually-measured air density to obtain an equivalent wind speed under a standard air density, and segmenting the equivalent wind speed into various wind speed sections according to a standard power curve; self-consuming equipment is divided into constant-power equipment and variable-load equipment; working condition coefficients of all the constant-power devices and all the variable-load devices in the corresponding wind speed sections are determined; according to the rated power of each constant power device and each variable load device and the working condition coefficient of the corresponding wind speed section, respectively determining the self-consuming power of each wind speed section of each constant power device and each variable load device; summing the self-consumed power of the same wind speed section of all the constant power equipment and the self-consumed power of the same wind speed section of all the variable load equipment to obtain the self-consumed power of the whole machine in each wind speed section, and generating a wind speed section-self-consumed power curve. The actual operation condition is dynamically captured, and the accuracy and efficiency of generating capacity evaluation are improved.

The present application belongs to the technical field of intelligent household appliances, and particularly relates to a method and device for obtaining the power consumption of a water heater and an electronic device. By obtaining a plurality of reported data sets of the water heater in a target period, for each reported data in each reported data set, according to a preset rated power field and a plurality of real-time power fields, the real-time power value corresponding to the real-time power field in which the power value is written and the rated power value corresponding to the rated power field are extracted, and the power value corresponding to each reported data is determined; the time interval between each reported data and the previous reported data of the reported data is obtained, and then the power consumption of the time interval is obtained according to the obtained power value, and finally the power consumption of the target period is obtained by summation. In the above method, the preset rated power field and the plurality of real-time power fields are used, and the real-time power field with the power value is found in the real-time power field, thereby avoiding the problem of value error when obtaining the power value, and further causing the problem of power consumption calculation error.

The present invention relates to the technical field of three-phase electric energy meters, and specifically to a three-phase electric energy meter system that can be remotely upgraded using multiple communication modes. The system comprises a background parallel management unit, an electric energy information collection unit, a background remote upgrade unit, an electric energy data processing unit, a data training unit, a data self-test unit, and a load prediction unit. When a cloud upgrade instruction is generated in the background parallel management unit, the cloud upgrade information instruction is transmitted to the electric energy information collection unit. After receiving the upgrade instruction, the electric energy information collection unit collects upgrade status information and historical data packets of each electric energy meter. The electric energy data processing unit cleans the historical data packets, specifically using the average value of the ratio of the power range value to the rated power value and the connection deviation rate ratio as the prediction weighted item for a model construction, so as to meet the regulation and prediction requirements of multiple risks in a future environment and improve the service life of the electric energy meter at that location.

The utility model discloses a portable power adapter, and particularly relates to the technical field of power adapters, the portable power adapter comprises a power adapter body, two ends of the power adapter body are respectively plugged with a first connecting line and a second connecting line, and a protection structure is arranged outside the power adapter body. The protection structure comprises a first outer cover and a second outer cover which are arranged outside the power adapter body in a covering mode, and one end, close to the second outer cover, of the first outer cover is fixedly connected with a butt joint block. According to the utility model, the protection structure is arranged, so that the power adapter body can be protected, and the condition that the identification is difficult to identify due to abrasion, scraping, stains and the like caused by the environmental influence when the rated power, input and output voltage and other information identification on the power adapter are used is avoided; the phenomenon that the power adapter is connected with incompatible equipment due to wrong connection easily caused by unclear identification in the use process is prevented, and normal work of the equipment is ensured.

The application relates to a charger and a power distribution method and a power distribution device thereof, the method comprising the following steps: determining the required power and the required current of a vehicle to be charged; determining the rated power and the maximum current of each charging module in the charger; calculating the number of required charging modules based on the required power and the rated power, or the required current and the maximum current; selecting the required charging modules in the charger based on a preset selection principle, combining the selected charging modules, and obtaining combined charging modules; and calling the combined charging modules to charge the vehicle to be charged. The application determines the number of required charging modules in advance, and then selects the required charging modules in the charger based on the preset selection principle, so that the problem of charging power redundancy caused by unreasonable charging power distribution is reduced.