74 results about "Mppt controller" patented technology

The invention relates to the technical field of electric vehicle charging, and discloses an electric vehicle charging pile system which comprises a charging pile body, a solar power supply module, an energy storage battery module, a power grid access module, a charging control module and a fire detection module. Wherein the output end of the solar power supply module is respectively connected with the energy storage battery module and a charging interface of the charging pile body through the MPPT controller, and the energy storage battery module is respectively connected with the power grid access module and the charging interface through the charging control module; the fire detection module is used for collecting fire data and transmitting the fire data to the charging control module, so that the charging control module performs fire detection. According to the charging pile system, by accessing solar energy and controlling three-source cooperative power supply, the electric vehicle charging power consumption cost is greatly reduced, the probability of centralized charging of users in rural areas is reduced, and the stability of a power grid is improved. In addition, abnormity in the charging process can be found as early as possible, and safety protection is improved.

The invention discloses a household photovoltaic data acquisition method and device based on a wireless Internet of Things, and the method comprises the steps: collecting a group cascade current and voltage curve and ambient light intensity data in real time at a photovoltaic array edge node, and extracting a shadow-shielded spatio-temporal evolution feature vector through a spatio-temporal convolutional neural network; inputting the spatio-temporal evolution feature vector into a power compensation decision model to obtain a cross-string power dynamic compensation scheme including a compensation current value of a shielded string and a maximum output power regulation quantity of an adjacent unshielded string; and according to a dynamic power compensation scheme, working points of MPPT controllers of adjacent photovoltaic strings are synchronously adjusted through a Mesh network between edge nodes, so that the power loss of the shielded strings is compensated by the unshielded strings in real time. A shadow evolution rule is analyzed in real time through a space-time convolutional neural network, and a cross-string power dynamic compensation mechanism and Mesh network cooperative control are combined, so that high-precision prediction and minute-level dynamic compensation of shielding loss are realized.

The invention provides a photovoltaic cell maximum power point tracking method based on an improved sparrow search algorithm, relates to the technical field of photovoltaic power generation, and solves the problems that a traditional photovoltaic cell maximum power point tracking algorithm still falls into a local extreme value in a local shadow environment, so that the tracking precision is sharply reduced, and the tracking time is shortened. And the problem of failure in a local shadow environment is solved. According to the technical scheme, the method comprises the steps that a composite algorithm of an improved sparrow search algorithm and a variable step size perturbation and observation method is used as a control algorithm of an MPPT controller, iteration is conducted according to the flow of the improved sparrow search algorithm after the improved sparrow search algorithm is initialized at the initial stage of algorithm operation, and the output power of a photovoltaic cell array under the current duty ratio is calculated; the output power is the fitness value of the algorithm, and the global optimal position is updated. The method can adapt to a rapidly changing illumination environment, power oscillation is obviously reduced in the process of tracking the maximum power point, stable output of a photovoltaic cell can be guaranteed, and stable operation of a communication base station is guaranteed.

The invention discloses a direct-current power generation system and a control method thereof, which innovatively adopts a photovoltaic and energy storage double-cascade architecture and combines an intelligent protection and coordination control strategy. The system comprises N photovoltaic cascade subunits and M direct current energy storage modules, and each unit is provided with a bypass protection device. Each photovoltaic cascade subunit is integrated with an MPPT controller, an isolation converter and a bypass protector containing a piezoresistor and a diode; the energy storage module adopts a non-isolated DCDC conversion circuit, and a matched energy storage bypass protector is integrated with a bidirectional power electronic switch, a piezoresistor and a mechanical isolation switch. The technical problems of large voltage fluctuation, low system reliability, difficult maintenance and the like of a traditional direct current system are effectively solved, the service life of equipment is prolonged while the system stability is improved, and the system is particularly suitable for medium-high voltage direct current power supply scenes.

The invention relates to the technical field of mismatch compensation, and discloses a photovoltaic module series mismatch compensation method and device. The method comprises the following steps: performing clustering analysis processing on a synchronous data set to obtain a mismatch feature vector containing a mismatch degree, mismatch distribution and a mismatch scale; performing direct current conversion processing on the mismatch feature vector through an LLC resonant topological structure to obtain a working parameter set of an MPPT controller; performing optimization processing on the working parameter set of the MPPT controller through a PID parameter setting algorithm to obtain a controller configuration scheme including resonant network parameters and switching frequency; carrying out distributed cooperative processing on the controller configuration scheme through power line carrier communication to obtain a multi-controller power balancing strategy; and performing performance evaluation processing on the multi-controller power balancing strategy through a standard working condition test to obtain a system operation parameter optimization scheme. According to the invention, the efficiency and accuracy of series mismatch compensation of the photovoltaic module are improved.

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 invention provides a power-loss protection system of a wind turbine generator and a power supply method thereof. The power-loss protection system provided by the embodiment of the invention comprises a small wind generating set, an MPPT controller, a power-loss protection controller, an anemorumbometer and energy storage equipment, the energy storage device is electrically connected with the power-loss protection controller, the wind turbine generator and the MPPT controller, the MPPT controller is electrically connected with the small wind turbine generator, and the power-loss protection controller is electrically connected with the anemorumbometer; the power-losing protection controller is used for controlling the energy storage equipment to supply power to the wind turbine generator according to wind speed and wind direction data collected by the anemorumbometer in real time when the power grid loses power; and the MPPT controller is used for charging the energy storage equipment by using electric energy generated by the small wind generating set in the operation process of the small wind generating set. The method can automatically supply power to key equipment of the wind turbine generator after the power grid loses power, and has a power supply path independent of the power grid and the wind turbine generator.

The invention discloses a heat pump direct current direct drive method and system based on two-way MPPT and two-way energy storage, and relates to the field of heat pump control systems. According to the invention, the photovoltaic power generation system is controlled to capture light and generate power by integrating the two independent MPPT controllers; acquiring the power generation power of the photovoltaic power generation system and the load power of the heat pump, and comparing the power generation power of the photovoltaic power generation system with the load power of the heat pump; when the power generation power of the photovoltaic power generation system is larger than the load power of the heat pump, the photovoltaic power generation system supplies power to the heat pump through the bidirectional DC-DC converter, and meanwhile, the redundant electric energy is stored in the energy storage module through the bidirectional DC-DC converter, and when the power generation power of the photovoltaic power generation system is smaller than the load power of the heat pump, the redundant electric energy is stored in the energy storage module. The photovoltaic power generation system and the energy storage module supply power to the heat pump through the bidirectional DC-DC converter at the same time. Through two-way flow transmission of electric quantity, the problem of energy dynamic unbalance in an existing photovoltaic direct drive heat pump system can be effectively solved, the system stability and the photovoltaic utilization rate are improved, and meanwhile dependence on a power grid is reduced.

The invention discloses a 5G base station multi-source cooperative power supply control system based on MPPT, and relates to the technical field of power supply control. Comprising an energy input module, an MPPT controller, a power conversion module, an energy storage module, a multi-source cooperative control module, a 5G base station, an environment sensor, a communication monitoring module and a standby power supply. Wherein the energy input module, the MPPT controller, the power conversion module, the energy storage module, the multi-source cooperative control module and the 5G base station are connected in sequence, the environment sensor is connected with the MPPT controller, the MPPT controller is further connected with the communication monitoring module, and the standby power supply is connected with the multi-source cooperative control module. Through intelligent MPPT and multi-source cooperative control management, the power supply reliability and energy efficiency of the 5G base station are remarkably improved, and a new thought is provided for green construction of a 5G network.

The invention discloses a micro-photovoltaic charging system based on an optimization algorithm, and relates to the technical field of photovoltaic power generation and energy storage. Comprising a photovoltaic cell panel which is used for obtaining real-time data of external light radiation intensity, environment temperature, main circuit current and voltage parameters, converting the real-time data into electric energy and inputting the electric energy to an MPPT controller; the MPPT controller is used for extracting power-voltage curve feature points and adjusting the working state of the system; the DC-DC converter is used for adjusting the duty ratio according to the output of the MPPT controller to realize maximum power output; the energy storage module is used for storing the generated electric energy; the charging management module is used for performing constant-current / constant-voltage charging management; and the microcontroller is used for coordinating the communication of each module. The generating capacity is greatly improved, the working state of the system is adjusted, and quick response and timely action of the system are achieved.

The invention discloses a mobile photovoltaic energy storage charging system based on a distributed direct current coupling architecture, belongs to the technical field of photovoltaic energy storage charging equipment, and aims to solve the problems of relatively high investment cost and relatively low energy conversion efficiency caused by relatively many component controllers and couplings. Comprising a mobile distributed DC coupling architecture module and an all-in-one controller. A distributed direct current coupling framework is adopted, on a mobile energy storage charging vehicle or a fixed energy storage charging pile, by multiplexing a DCDC power module and through algorithm switching, photovoltaic charging of an energy storage battery and charging of a new energy vehicle by a mobile charging trolley are achieved, and meanwhile charging or discharging of a micro-grid can be achieved by matching with an energy storage inverter; the main hardware power topology of the photovoltaic MPPT controller is a bidirectional Boost topology, a Buck-Boost topology or a bidirectional DAB topology, and the off-grid mobile energy storage charging core power module can realize wide voltage output through the Buck-Boost by means of a DCDC converter, so that the charging of most new energy batteries on the market is met.

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 utility model discloses a car roof photovoltaic power generation device capable of automatically turning over a cover and a control system of the car roof photovoltaic power generation device. The power generation device comprises a luggage rack base capable of being installed on the top of an automobile, a cover plate installed on the luggage rack base in a turnover mode, a first photovoltaic panel stored in the luggage rack base in a foldable mode, a second photovoltaic panel covering the outer side face of the cover plate and a telescopic driving mechanism used for driving the cover plate to be turned over to be opened or closed relative to the luggage rack base. The telescopic driving mechanism is installed on the luggage rack base, and the output end of the telescopic driving mechanism is connected with the cover plate. The system comprises a photovoltaic cell panel, an MPPT controller, a car roof battery pack, a driving motor, a camera, an inverter, a charging gun and an electricity taking change-over switch. The foldable photovoltaic cell panel is arranged on the roof rack, so that the roof rack has the functions of storage and power generation and also has the effects of shading and monitoring an automobile, and the problems of static power supply and taking, shading, monitoring and storage of an existing automobile are solved.

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.

The application discloses a seamless switching control method of a direct-current micro-grid photovoltaic controller, and is based on a direct-current micro-grid composed of a photovoltaic power generation unit with a photovoltaic controller and an MPPT controller, an energy storage unit and a direct-current bus; a direct-current micro-grid simulation model including the photovoltaic controller, the MPPT controller, the energy storage unit and a local load is established first, and then different converters are coordinately controlled according to a direct-current bus voltage fluctuation law; the application combines the MPPT control with the bus voltage adjustment strategy, does not need communication, does not need to change the hardware structure and control parameters, and compared with the prior art, can realize the maximum power output and the current-limiting voltage regulation function of the photovoltaic under the condition of no communication, and can not generate large voltage fluctuation when mode switching, and can effectively improve the stability of the direct-current micro-grid.

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.

An improved Grey Wolf MPPT control method and device for a photovoltaic array suitable for charging an energy storage power station comprises: constructing an improved Grey Wolf algorithm (THW‑GWO‑P&O), combining a traditional Grey Wolf algorithm (GWO) with maximum power point tracking (MPPT), improving the GWO algorithm, and combining it with a traditional P&O algorithm to form an improved Grey Wolf algorithm (THW‑GWO‑P&O); setting simulation conditions and designing operating data for a photovoltaic array under different conditions; building a simulation model of a photovoltaic power generation system in Matlab / Simulink, and controlling a circuit duty cycle through an MPPT controller using the THW‑GWO‑P&O algorithm; running the simulation model of the photovoltaic power generation system, analyzing the difference between the actual voltage, current, and power and the ideal voltage, current, and power of the THW‑GWO‑P&O algorithm under different conditions, and comparatively analyzing the efficiency of different algorithms under the same and different conditions; and simulating global maximum power point tracking under uniform illumination and shading conditions using the simulation model to verify the accuracy and speed of the THW‑GWO‑P&O algorithm in tracking the maximum power point under complex illumination conditions.

The invention relates to a light storage energy control method suitable for an unmanned aerial vehicle nest, the unmanned aerial vehicle nest comprises a photovoltaic panel, a dual-channel MPPT controller, an energy storage module and an unmanned aerial vehicle interface, and the control method comprises the following steps: obtaining weather forecast in the next 24 h; adjusting the maximum SOC value of the energy storage module according to the weather forecast in the next 24 hours; acquiring the irradiance of the photovoltaic panel; and executing a corresponding charging mode according to the irradiance at the photovoltaic panel. The maximum SOC value of the energy storage module is adjusted by acquiring the weather forecast information, more electric energy can be stored to meet subsequent charging requirements by increasing the SOC before cloudy days, more energy storage space can be reserved by decreasing the SOC before sunny days, the energy storage module is prevented from being overcharged, and the service life of the energy storage module is prolonged.

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 invention provides a photovoltaic hydrogen production system and a control method. The photovoltaic hydrogen production system comprises a photovoltaic power generation device and a hydrogen production control device connected with the photovoltaic power generation device. Wherein the photovoltaic power generation device comprises a photovoltaic power generation array, a switching power supply assembly, a maximum power point tracking (MPPT) controller and an inverter circuit; the hydrogen production control device comprises an auxiliary power supply and a hydrogen electrolytic cell; a photovoltaic power generation array is used for outputting an electric signal and inputting the electric signal to a switching power supply assembly, and an MPPT controller inputs a target control signal to the switching power supply assembly based on the electric signal so as to perform multi-stage control on the electric signal in the switching power supply assembly and output photovoltaic direct current; the inverter circuit inverts the photovoltaic direct current into alternating current and inputs the alternating current into the auxiliary power supply; the hydrogen electrolytic cell obtains target hydrogen through electrolysis according to the input alternating current and the connected first water source; therefore, a green and environment-friendly power generation mode is provided through the photovoltaic hydrogen production system, and new energy hydrogen production is achieved.

Methods and systems for connecting a photovoltaic module and an inverter having an input capacitor are presented. The photovoltaic system includes a maximum power point tracking (MPPT) controller coupled between the inverter and the photovoltaic module. The MPPT controller includes a direct current (DC) converter configured to reduce, in a forward buck mode, a voltage of the photovoltaic module, to supply power from the photovoltaic module to the input capacitor of the inverter. The photovoltaic system also includes a microcontroller unit (MCU) configured to control the DC converter to allow the photovoltaic module to operate at a maximum power point, and to increase, in a reverse boost mode, a voltage of the input capacitor of the inverter, to dissipate power from the input capacitor in the photovoltaic module, and the MPPT controller is configured to, based upon one or more triggers.

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 invention provides a weak-current intelligent lighting control hardware module, and the module comprises a processing unit which comprises a central controller and a partition controller, the central controller is responsible for a global strategy, and the partition controller is used for managing floors or functional areas; the network topology unit comprises a wired system and a wireless system, a backbone network of the wired system uses an optical fiber, a terminal uses a KNX / DALI bus, and a Mesh network of the wireless system supports an ad hoc network and redundant routing; the sensing unit comprises an illumination sensor, a microwave radar + PIR sensor and a dimming driver; the hybrid energy storage system comprises a lithium battery, a super capacitor, a photovoltaic panel, an MPPT (maximum power point tracking) controller, an energy storage battery, a DC / DC (direct current / direct current) converter and a lighting load, and a mains supply and energy storage battery bidirectional inverter supports power grid feed. According to the invention, through the four technical support columns of hierarchical control, intelligent perception, light-storage cooperation and AI driving, the lighting system is changed from basic lighting to safety, energy saving and intelligence in a three-in-one manner.