40 results about "Mppt controller" patented technology

The utility model relates to a multi-energy complementary energy system, which comprises a multi-energy power generation part, a multi-energy complementary converter, an energy storage system and a power grid, the multi-energy power generation part comprises a wind driven generator, a photovoltaic array and a hydroelectric generator; the multi-energy complementary converter comprises two AC / DC rectifiers, a photovoltaic MPPT controller, a bidirectional DC / AC inverter and a DC bus, the two AC / DC rectifiers are electrically connected with the wind driven generator and the hydroelectric generator respectively, the photovoltaic MPPT controller is electrically connected with the photovoltaic array, the energy storage system comprises a bidirectional DC / DC module and a super capacitor, and the super capacitor is connected with the DC bus through the bidirectional DC / DC module; the power grid is connected with the direct current bus through the bidirectional DC / AC inverter; when the system is used for supplying power to the electric equipment, energy conservation and emission reduction can be realized, meanwhile, the power operation cost is greatly reduced, and great economic benefits are brought.

The application discloses a multi-energy complementary comprehensive energy system, which is composed of a photovoltaic panel, two circulating pumps, four three-way valves, a heat storage tank, a liquid storage tank, an air source heat exchanger, a water source heat exchanger, a four-way reversing valve, a compressor, an air cooler, a thermoelectric cooler (TEC), two expansion valves, a flasher, a check valve, a manual regulating valve, an MPPT controller, a storage battery and an inverter. The system realizes stable operation of the driving heat pump compressor and the multiple circulating water pumps through the cooperation of the PV photovoltaic panel and the inverter. The hot water generated by the light-heat circuit of the system is stored in the heat storage tank and can be used as user hot water or a heat pump heat source. The flasher of the system generates medium-pressure steam during the operation of the system and introduces the medium-pressure steam into the air supplementing inlet of the compressor through an air supplementing pipeline to form an air supplementing path. The multi-energy complementary comprehensive energy system has the characteristics of energy efficient coupling, good season adaptability and multi-energy complementation and is suitable for distributed energy system scenes.

The application discloses a kind of MPPT controller convenient to maintain, it is related to solar control system technical field, including support mechanism, support mechanism includes upper half shell, the bottom of upper half shell is rotatably connected with lower half shell, the bottom of upper half shell is provided with cleaning mechanism, the inside of upper half shell is provided with ejecting mechanism, the two sides of ejecting mechanism are provided with detection mechanism, cleaning mechanism includes the brush of component and device are cleaned, brush is set to the top of lower half shell, cleaning mechanism is used to dust cleaning operation to the internal control mainboard of controller, the dust cleaning operation of mainboard in the device can be carried out, avoid dust accumulation too much and cause component heating, dust in important component gap is all swept out, can effectively improve heat dissipation efficiency, prevent internal heat accumulation too much and reduce the working stability degree and efficiency of controller, also reduce the risk of equipment damage, prolong service life.

The application discloses a direct-current power generation system and a control method thereof, and is characterized in that a photovoltaic and energy storage dual cascade architecture is innovatively adopted, and an intelligent protection and coordinated control strategy is combined. The system comprises N photovoltaic cascade subunits and M direct-current energy storage modules, and each unit is provided with a bypass protection device; the photovoltaic cascade subunit is integrated with an MPPT controller, an isolation converter and a bypass protector comprising a voltage-dependent resistor and a diode; the energy storage module adopts a non-isolated DCDC conversion circuit, and is matched with an energy storage bypass protector integrated with a bidirectional power electronic switch, a voltage-dependent resistor and a mechanical isolation switch. The application effectively solves technical pain points such as large voltage fluctuation, low system reliability and difficult maintenance of a traditional direct-current system, prolongs the service life of equipment while improving the stability of the system, and is particularly suitable for a medium and high voltage direct-current power supply scene.

The invention discloses a photovoltaic MPPT (Maximum Power Point Tracking) dual-mode control system and method. The photovoltaic MPPT dual-mode control system comprises a photovoltaic module unit, a Boost circuit, a voltage and current sampling circuit, an MPPT controller, a PWM (Pulse-Width Modulation) module and a direct-current electronic load. The MPPT controller adopts a dual-mode power prediction control strategy combining an index adjustable step length conductance increment method and a constant voltage tracking method, and realizes prospective identification of environmental changes by constructing disturbance trend predictive quantity fusing power first-order and second-order changes; the hysteresis interval width of mode switching is dynamically adjusted based on the output power fluctuation variance, and the anti-noise capability is improved; in a conductance increment mode, a nonlinear potential function containing a first-order slope and a second-order curvature is utilized to generate an exponential self-adaptive step length, and high-precision control of far MPP large-step-length rapid tracking and near MPP small-step-length oscillation suppression is achieved. The tracking speed and the steady-state precision of the system under the dynamic and steady-state working conditions are effectively improved, and the overall energy capture efficiency is enhanced.

This utility model relates to the field of integrated energy system technology and discloses a multi-port adjustable photovoltaic-storage-DC-flexible integrated energy power supply system. It includes a 750V DC bus platform, a photovoltaic power generation unit, a grid input terminal, a V2G charging pile, an energy storage unit, and a control cabinet cluster. The photovoltaic power generation unit includes a photovoltaic array, an MPPT controller, and a photovoltaic DC combiner box with a DC 750V output. The photovoltaic power generation unit is electrically connected to the 750V DC bus platform. The control cabinet cluster includes control cabinet one, control cabinet two, and control cabinet three. This utility model, through a multi-port DC power router architecture combined with intelligent control strategies, reduces AC / DC conversion links, significantly reducing energy loss, improving the overall energy utilization rate of the system, achieving energy complementarity and optimized configuration, enhancing the system's power supply capacity in emergency situations, and improving the reliability and stability of the power supply.

The embodiment of the invention provides an MPPT (Maximum Power Point Tracking) multi-mode control method of a photovoltaic energy storage system and an MPPT controller. The method is used for an MPPT controller, and the MPPT controller is used for controlling H4 bridge arm topology and collecting inductive current of an energy storage inductor, photovoltaic voltage of a photovoltaic input end and battery voltage of a battery output end in real time. Comparing the photovoltaic voltage with the battery voltage, judging whether the H4 bridge arm topology currently works in a buck state or a boost state according to a comparison result, and obtaining a buck-boost judgment result; based on the buck-boost judgment result and the real-time comparison between the inductive current and a preset current threshold value, adaptive switching is carried out between a non-synchronous rectification mode and a synchronous rectification mode in a corresponding working state; the asynchronous rectification mode comprises a Buck circuit mode and a Boost circuit mode, and the synchronous rectification mode comprises a Buck synchronous rectification mode and a Boost synchronous rectification mode. According to the technical scheme provided by the embodiment of the invention, the problem of current backflow is solved, the follow current loss is reduced, and the MPPT efficiency is improved.

This invention discloses a one-stop intelligent megawatt box system based on TE-SVM modulation and its intelligent controller and control method, including an MPPT controller for tracking the maximum power of a DC / DC converter, a positive and negative sequence voltage decomposition module, a phase-locked loop, and a C-type control for the LCL filter. f With R f A current correction module that corrects the three-phase average current output from the component; a positive-sequence theoretical active power reference current conversion module; a positive-sequence theoretical reactive power reference current conversion module; and an output voltage U. α +、U β + Two-phase positive sequence static voltage converter module, output voltage U α -, U β A two-phase negative-sequence static voltage converter module, a TE-SVM waveform generation module based on the TLS-ESPRIT algorithm for estimating smart grid frequencies, and the TE-SVM waveform generation module utilizing voltage U α +、U β + and U α -, U β - Synthesize a reference voltage and generate a waveform based on the estimated smart grid frequency to control the inverter to perform inversion.

The utility model relates to the technical field of photovoltaic power generation, in particular to a high-security MPPT (maximum power point tracking) controller and an insulation impedance detection system based on the MPPT controller. The utility model discloses a high-security MPPT (maximum power point tracking) controller, which comprises an input end and an output end, the control unit is configured to track the maximum power point output by the photovoltaic cell panel; the controllable quick change-over switch is arranged in an output loop of the control unit in series; and the insulation impedance detection module is connected to the controllable quick change-over switch. According to the scheme, the high-security MPPT controller is combined with the insulation impedance detection system based on the MPPT controller, so that the system structure is simplified, the manufacturing cost is reduced, the real-time protection capability and applicability of the system are improved, the safety and reliability of the photovoltaic system are remarkably enhanced, and the photovoltaic system has remarkable practical value and popularization prospect.

The application provides an all-weather photovoltaic direct-drive LED lighting system, characterized in that it comprises a solar radiation sensor, a photovoltaic assembly, an MPPT controller, an energy storage assembly, a DC-DC constant-current power supply, an LED lamp, an indoor illuminance sensor and an Internet of Things control center; the photovoltaic assembly is connected with the energy storage assembly through the MPPT controller; the energy storage assembly is connected with the LED lamp through the DC-DC constant-current power supply; the Internet of Things control center is connected with the solar radiation sensor and the indoor illuminance sensor, and the Internet of Things control center simultaneously controls the on-off of the energy storage assembly and the input end of the DC-DC constant-current power supply. The energy storage assembly is connected with an AC-DC charger, and the AC-DC charger is connected with a power grid. The scheme utilizes the Internet of Things control center to perform data statistics and analysis, realizes an energy-saving mode of photovoltaic power generation, energy storage and power grid complementation, and is helpful to further improve the energy-saving effect.

The present application relates to the technical field of power system control, in particular to a photovoltaic energy storage control method and system based on an MPPT controller, comprising: determining the energy loss of battery energy storage control at the i-th moment according to the fluctuation of battery charge and discharge power at the i-th moment and the change of energy conversion efficiency of battery energy storage control in a preset time period; determining the coupling parameter according to the energy loss of battery energy storage control at the i-th moment and the battery energy storage control deviation coefficient; determining the stable term of battery energy storage control at the i-th moment according to the difference between the energy loss of battery energy storage control at the i-th moment and the average energy loss and the coupling parameter; optimizing the battery energy storage control objective function according to the stable term of battery energy storage control at the i-th moment to obtain the optimized battery energy storage control objective function; the present application can improve the utilization efficiency of photovoltaic power generation.

The utility model relates to the technical field of photovoltaic power generation and energy storage systems, in particular to an optical storage system with a PID (Proportion Integration Differentiation) repair function. An MPPT controller; the load or the energy storage equipment is configured to be equipment which takes the output electric energy of the MPPT controller as power supply input; the controllable change-over switch is connected in series in an output loop of the MPPT controller; and the PID module is used for carrying out PID repair on the photovoltaic string, and when the PID module needs to be started to carry out photovoltaic string repair, the controllable change-over switch is controlled to be switched off. By disconnecting the controllable change-over switch, the connection between the photovoltaic group string and the system ground wire is effectively isolated in the PID repair process, and a short-circuit-to-ground loop formed by grounding of the alternating current N wire of the load or the energy storage equipment is prevented. According to the design, the correctness of a current path in the PID repair process is ensured, current overload and equipment damage are avoided, the MPPT controller and other key hardware equipment are protected, the service life of the system is prolonged, and the safety and reliability of the system are improved.

The utility model belongs to the field of energy storage converters, and provides an energy storage converter comprising a box body, the outer side wall of which is provided with a DC input / output port and an AC input / output port; the mainboard is positioned in the box body and is used for controlling the operation of the energy storage converter; and the power board is electrically connected with the main board and located below the main board, the power board is used for current conversion, and the direct current input and output port and the alternating current input and output port are electrically connected with the power board. Compared with the prior art, the energy storage converter has the advantages that the fan I, the fan II, the fan III, the radiator and the vent holes are matched, and the layered structure of the main board and the power board is combined, so that a ventilation loop is formed in the energy storage converter, and the coverage range of the air cooling effect is wider; heat generated during operation of devices such as a mainboard and a power board can be quickly taken away; the whole structure is simple, the individual design separated from the MPPT controller is realized, and the flexibility and adaptability of the energy storage system are greatly improved.

The application discloses a photovoltaic MPPT dual-mode control system and method, which comprises a photovoltaic component unit, a Boost circuit, a voltage and current sampling circuit, an MPPT controller, a PWM modulation module and a direct-current electronic load. The MPPT controller adopts a dual-mode power prediction control strategy combining an exponential adjustable step size conductance increment method and a constant voltage tracking method, a disturbance trend prediction quantity fusing first-order and second-order power changes is constructed, and forward-looking identification of environmental changes is realized; the width of a hysteresis interval of mode switching is dynamically adjusted based on output power fluctuation variance, and noise resistance is improved; in the conductance increment mode, an exponential adaptive step size is generated by using a nonlinear potential function containing a first-order slope and a second-order curvature, and high-precision control of 'fast tracking with a large step size far from the MPP and small step size to suppress oscillation near the MPP' is realized. The tracking speed and the steady-state precision of the system under dynamic and steady-state conditions are effectively improved, and the overall energy capture efficiency is enhanced.

The invention, which relates to the technical field of solar energy control, discloses a solar energy control system comprising a load change detection module, a power point offset information analysis module, a power point offset evaluation module, an MPPT controller adjustment module and a dynamic optimization feedback module. The power point offset information analysis module is used for acquiring power point offset influence information generated by the solar cell panel in a load change time period in real time and respectively generating a load change influence coefficient and a controller response lag coefficient; and the power point offset evaluation module is used for constructing a power point offset influence evaluation model for the generated load change influence coefficient and the controller response lag coefficient, generating an offset influence evaluation coefficient and evaluating the influence degree of the power point offset of the battery panel caused by the load change when the solar heat supply device is started for the first time. According to the invention, the problem of power point offset caused by sudden load increase when the solar heat supply device is started for the first time is solved, and dynamic response optimization and efficient and stable operation are realized.

The utility model discloses a water surface navigation mark with an information issuing function. The water surface navigation mark comprises a floating body floating on the water surface and a supporting frame installed on the floating body. The information issuing unit comprises an LED display screen, a driving controller and a main controller which are in circuit connection, and the LED display screen is installed on the side face of the supporting frame; the communication module is in circuit connection with the main controller and is used for performing data interaction with a control center; the hybrid power supply system comprises a solar panel, a wind driven generator, an MPPT controller and a lithium battery pack, the solar panel and the wind driven generator are installed at the top of the supporting frame, the lithium battery pack is charged through the MPPT controller, and the lithium battery pack is used for supplying power; the sound alarm and the LED beacon light are in circuit connection with the main controller; the water surface navigation mark can release information such as navigation channel state, hydro meteorology and the like in real time through the water surface navigation mark, improves the stability and the reliability of energy supply, improves the warning effect and the navigation function of the water surface navigation mark, and is suitable for inland waterway, port, offshore and other scenes.

The invention relates to the technical field of new energy, and discloses a cooperative control device of a light storage and charging integrated intelligent micro-grid, which comprises an energy acquisition unit, an energy storage unit, a charging load unit, an edge control unit and a safety interaction unit, the energy acquisition unit is connected with a photovoltaic module through an MPPT controller and is used for efficiently capturing photovoltaic electric energy; the energy storage unit adopts a modular design, and each energy storage module is connected to a common DC bus through a bidirectional DC / DC converter. The photovoltaic output greatly reduces the photovoltaic light abandoning rate and improves the new energy consumption efficiency through a hierarchical response mechanism of preferential load supply and surplus electric energy storage in combination with precise matching of supply and demand by a joint prediction model; meanwhile, peak and valley electricity prices and carbon transaction data are integrated, electricity is stored in a low electricity price ebb and discharged in a high electricity price peak, power supply dependence in a high electricity price period of a power grid is reduced, economic benefits and carbon emission reduction targets are considered, and the method is suitable for cost optimization requirements of different scenes such as communities and parks.

The application discloses a portable multi-source power supply device, and relates to the technical field of mobile power supply, which comprises a mechanical power generation device, a photovoltaic power generation device, an energy management module and a charging module; the mechanical power generation device and the photovoltaic power generation device are connected with the energy management module; and the energy management module is connected with the charging module. The mechanical power generation device comprises a disc generator, a rectification filtering module, a super capacitor group and a USB module which are connected in sequence; the photovoltaic power generation device comprises a photovoltaic cell panel, an MPPT controller and a USB module which are connected in sequence; the energy management module comprises a DC / DC charging panel, a BMS control module, a lithium battery group and a USB fast charging module; and the charging module comprises a control panel, a charging panel, a charging switch panel, a polarity conversion panel and a movable charging contact which are connected in sequence. The application has the advantages of simple structure, convenient use, application to charging of various batteries, multiple energy supply ways and expansion of the use range of the portable multi-source power supply device.

The utility model relates to the technical field of energy storage, disclose an integrated electric energy conversion equipment, including the cabinet, at least one baffle is equipped in the cabinet, the baffle makes the cabinet formed the first accommodating cavity and second accommodating cavity of upper and lower arrangement, be equipped with MPPT controller in the first accommodating cavity, be equipped with parallel and off -grid controller in the second accommodating cavity, the electric row subassembly is located in the second accommodating cavity, and with MPPT controller and parallel and off -grid controller respectively electricity is connected, the electric row subassembly includes a plurality of terminal, the terminal includes at least one first terminal that is configured to be accessed for load, at least one second terminal that is configured to be accessed for generator, at least one third terminal that is configured to be accessed for energy storage device and at least one fourth terminal that is configured to be accessed for power grid. The utility model has the advantages of supporting multiple different energy conversion into electric energy.

The utility model discloses a lithium battery with an MPPT (Maximum Power Point Tracking) charging function. The lithium battery comprises an MPPT charging board, a battery cell group and a battery protection board, the input end of the MPPT charging panel is connected with the output end of an external solar cell panel, and the output end of the MPPT charging panel is connected with the input end of the cell group; the battery protection plate is connected with the battery cell group, and a battery management system is arranged in the battery protection plate. An MPPT controller is arranged in the MPPT charging panel; the MPPT controller comprises a control module, a DC-DC converter and a charging management module. The DC-DC converter is connected in series between the solar cell panel and the cell group, and the control module is connected with the DC-DC converter; and the DC-DC converter adopts a synchronous rectification BUCK circuit. The charging management module comprises a second single-chip microcomputer, a battery detection circuit and a battery protection circuit. The signal receiving end of the second single-chip microcomputer is connected with the battery detection circuit, and the signal output end of the second single-chip microcomputer is connected with the BUCK circuit and the battery protection circuit. The MPPT controller is also provided with a plurality of protection circuits. The lithium battery provides a hardware basis for realizing more efficient and safer charging and discharging.

The invention provides a communication base station optical storage direct drive multi-energy complementary system and control based on a double-bus framework, the system is based on a double-bus parallel + double-source double-output framework, and direct distribution of photovoltaic energy, energy storage energy and commercial power energy on high and low voltage load sides is realized through cooperative output of double voltages (380V / 48V) of an MPPT controller and an energy storage system. Therefore, photovoltaic direct current 0-1 level conversion can be realized through a double-bus direct-drive framework; and reliable starting of the battery in a full power loss state is ensured through the passive self-sustaining wake-up device. The high-voltage direct-current bus (380V) transmits high power, the current is reduced to 1 / 8 of that of a 48V system, and the line loss is reduced; the super capacitor pre-stores energy to provide a back-up power supply for the control circuit, and'wake-up deadlock 'is broken. And compared with the prior art, the comprehensive efficiency is improved, the air conditioner energy consumption is reduced, and the emergency power supply success rate is improved.

The invention discloses a fire rescue emergency power supply device for an underwater tunnel in the technical field of underwater emergency fire-fighting equipment, the fire rescue emergency power supply device is applied to fire-fighting equipment, the power supply device comprises a roller skating generator, a power supply management unit and a microcontroller, the output end of the roller skating generator is connected with the input end of a three-phase rectification filter circuit through a three-phase power grid, and the output end of the three-phase rectification filter circuit is connected with the power supply management unit. The output end of the three-phase rectification filter circuit is connected with the input end of the DC-DC voltage stabilization module, and the output end of the DC-DC voltage stabilization module is connected with the input end of the MPPT controller. The power management unit comprises a power switching circuit. Inherent water flow in a tunnel serves as a power source and is converted into electric energy through the roller skating generator, almost uninterrupted power supply is provided for key fire fighting equipment, the autonomy and durability of emergency rescue are greatly improved, meanwhile, power supply stability and reliability can be effectively improved through multi-power-source switching and matched power supply, and the safety of emergency rescue is improved. The power supply is prevented from depending on a single power supply network, and timeliness and safety of underwater fire rescue can be guaranteed.

The invention relates to a wind and light storage and charging integrated charging pile with an intelligent power distribution function. The charging pile comprises a foldable photovoltaic power generation set, an angle tracking support, a small vertical wind driven generator, a lithium battery energy storage station, a super capacitor, an MPPT controller, a power grid, a bidirectional grid-connected inverter, a charging pile body, a power sensor and an energy storage management controller. The arrangement of the comprehensive storage and charging integrated charging pile is optimized, multi-energy collaborative collection and intelligent distribution are achieved, energy waste is reduced, dependence on a power grid is reduced, hybrid energy storage and precise control over central control are reduced, the service life of an energy storage battery is prolonged, the operation and maintenance cost is reduced, the long-term economy of the system is improved, multi-mode power supply switching and all-around protection design are achieved, and the energy utilization rate is increased. And the charging device is suitable for various outdoor scenes, and is suitable for popularization and application.

The application discloses a turbine type photovoltaic pump and belongs to the technical field of pump bodies, which comprises a solar panel, an MPPT controller, a brushless DC motor and a turbine pump body unit, the solar panel is electrically connected with the MPPT controller, the MPPT controller is electrically connected with the brushless DC motor, the brushless DC motor is installed on the turbine pump body unit, and a sealing protection unit is arranged on the turbine pump body unit; the brushless DC motor comprises a machine cylinder, front and rear end covers are fixed on both ends of the machine cylinder through internal hexagon screws, front and rear bearings are respectively installed in the front and rear end covers, a rotor and a coil are installed in the machine cylinder, the turbine pump body unit comprises a pump head and a volute, the pump head and the volute are fixedly connected through external hexagon screws, a water inlet and a water outlet are installed on the pump head, and an impeller is installed in the volute. The application discloses a turbine type photovoltaic pump which is reliable in sealing and has perfect protection function.

The photovoltaic-commercial power combined hydrogen production energy dispatching system comprises a photovoltaic module, an MPPT (maximum power point tracking) controller, an energy storage battery module, a first conversion power supply, commercial power, an inverter and a hydrogen production system, the MPPT controller is respectively connected with the photovoltaic module, the energy storage battery module and the inverter; the first conversion power supply is respectively connected with the MPPT controller, the energy storage battery assembly and the mains supply; and the inverter is respectively connected with the mains supply and the hydrogen production system. The invention also provides a photovoltaic-commercial power combined hydrogen production energy scheduling method. According to the system, the hydrogen production cost can be effectively reduced, meanwhile, the backup mains supply can guarantee the stability of the hydrogen production process, the situation that equipment cannot operate at night, in cloudy and rainy days and in insufficient illumination weather is prevented, stable hydrogen production is guaranteed, the hydrogen production efficiency is effectively improved, and the energy consumption is reduced. And popularization of hydrogen energy and commercialization of upstream and downstream products are facilitated.

The utility model relates to the technical field of municipal infrastructure, in particular to a photovoltaic panel integrated well lid type underground space ventilation device, which comprises a well lid base body adopting a honeycomb sandwich structure, overcomes the defects in the prior art, and comprises a photovoltaic power generation unit which is formed by embedding four monocrystalline silicon photovoltaic panels on the surface of the well lid base body in a matrix, and the ventilation subsystem comprises an axial flow fan which is vertically mounted in the cavity at the bottom of the well lid base body, a quick-release silica gel hose which is connected with an outlet of the fan, and a PID (Proportion Integration Differentiation) speed regulation module. Through optimization of a monocrystalline silicon photovoltaic panel and an MPPT controller, the requirements that the draught fan continuously operates for 6-10 hours, the endurance in rainy days is larger than or equal to 8 hours, the dependence of the mains supply is thoroughly eliminated, a PID speed regulation module is in linkage with a methane sensor, the dynamic adjustment range of the ventilation quantity is 60-100 m / h, compared with a constant-speed draught fan, the invalid energy consumption is reduced by 30%, and reverse osmosis of underground harmful gas is completely eradicated through the anti-reverse-flow valve and IP68 protection design.

The utility model provides an energy-saving control cabinet for a crane ship. The energy-saving control cabinet comprises an energy management system, a battery energy storage system, a photovoltaic power generation system, an alternating-current power distribution system, a human-computer interface system and an alarm system, the energy management system comprises an EMS module and a plurality of AMS modules, the human-computer interface system comprises a switch and an HMI module, and the photovoltaic power generation system comprises a photovoltaic bidirectional DC module, an MPPT controller and a solar photovoltaic power generation assembly. The photovoltaic power generation system is one of the main sources of energy, sunlight energy is directly converted into direct-current electric energy through the solar photovoltaic power generation assembly, it can be seen from a graph that the solar photovoltaic power generation assembly is connected with a controller, and the controller is responsible for adjusting and optimizing output of the solar photovoltaic power generation assembly. Therefore, it is ensured that the LED lamp can work efficiently under different illumination conditions, and the problems that power supply is inconvenient and electricity consumption is not sufficient are solved.

The application discloses a photovoltaic MPPT control system based on a fuzzy-PID two-stage control algorithm in the field of photovoltaic power generation control, which comprises a photovoltaic cell unit, a BOOST circuit, a voltage sampling circuit, a current sampling circuit, an MPPT controller, a PWM pulse width modulation module and a direct-current electronic load, the output ports of the photovoltaic cell unit are connected with the input ports of the BOOST circuit and the input ports of the MPPT controller respectively, the voltage and current signals generated by the photovoltaic cell unit are sampled, the duty cycle is automatically adjusted through the first-stage control algorithm, i.e. the fuzzy control algorithm, used by the MPPT controller, then the second-stage controller, i.e. the PID controller, is set according to the duty cycle fluctuation to correct the output PWM wave to control the on-off of the MOS tube, so that the photovoltaic cell can stably output the maximum power. The application improves the response speed of the system, reduces the steady-state error, simplifies the calculation amount and complexity, can track the maximum power point of the system in real time, and has good application in the photovoltaic power generation system.

A hand-cranked photovoltaic mobile integrated trailer and a power system thereof, comprising a monitoring and lighting assembly, a lifting rod assembly, a chassis frame assembly, an adjustable photovoltaic assembly, a power system, and a storage box, wherein the monitoring and lighting assembly is placed at a top portion of the lifting rod assembly and comprises monitoring cameras, a lighting fixture, a sound amplification device, and a cloud computing data processing control box; the adjustable photovoltaic assembly comprises a photovoltaic bracket, photovoltaic panels, and a hand-cranked photovoltaic rotating support used to adjust support angles of the photovoltaic panels; the power system is installed in an electrical box and comprises a battery energy storage assembly, an MPPT controller for photovoltaic access, an AC / DC controller for mains power access, a DC / DC voltage stabilizing controller for supplying power to the monitoring and lighting assembly, and a DC / AC controller for emergency power supply.

The invention relates to the technical field of power system control, in particular to a photovoltaic energy storage control method and system based on an MPPT (maximum power point tracking) controller. Determining the energy loss of battery energy storage control at the ith moment; determining a coupling parameter according to the energy loss of the battery energy storage control at the ith moment and the battery energy storage control deviation coefficient; determining a stable item of the battery energy storage control at the ith moment according to a difference value between the energy loss of the battery energy storage control at the ith moment and the average energy loss and the coupling parameter; optimizing the battery energy storage control objective function according to the stable item of the battery energy storage control at the ith moment to obtain an optimized battery energy storage control objective function; according to the invention, the utilization efficiency of photovoltaic power generation can be improved.