41 results about "Solar maximum" patented technology

Switched capacitor multilevel output DC-DC converters can be used as panel integrated modules in a solar maximum power point tracking system. The system can also include a central input current-controlled ripple port inverter. The system can implement per panel MPPT without inter-panel communication, electrolytic capacitors or per panel magnetics. A Marx converter implementation of the switched capacitor module is studied. Average total efficiencies (tracking×conversion) greater than 93% can be achieved for a simulated 510 W, 3 panel, DC-DC system.

The invention discloses a direct current varied-frequency air conditioner with a solar battery, comprising a solar battery, a direct current varied-frequency air conditioner, a solar power supply controller and a commercial power grid, wherein the solar power supply controller is connected between the solar battery and the direct current varied-frequency air conditioner; the varied-frequency air conditioner comprises an AC-DC rectifier and a AC varied-frequency air conditioner circuit; and the solar power supply controller comprises a DC-high-voltage DC inverter and a solar maximum output power point track (MPPT) control unit which is used for monitoring the output power of the solar battery, controlling the DC-high-voltage DC inverter to convert low-voltage direct current power output by the solar battery into high-voltage direct current and directly supplying power to a direct current varied-frequency air conditioner circuit. The commercial power grid is connected in parallel with the solar power supply controller through the AC-DC rectifier and directly supplies power to the direct current varied-frequency air conditioner circuit. The invention has the characteristics of low manufacturing cost, energy saving, environmental protection, reduction on the influence of environment, flexible operation, high energy-efficiency ratio and wide application range.

The invention provides a solar energy system for an unmanned plane to use. The solar energy system is composed of a solar cell module, a power source management system, an energy storage battery and a data adapter. The solar cell module is formed by packaging of a flexible high-efficiency thin film solar cell piece and is characterized in that the flexible requirement for surface materials of the plane body streamline design can be met, and output is efficient and stable. The power source management system is composed of a unilateral diode, a solar maximum power tracking system, a voltage stabilization chip and the like and can achieve automatic charging control over the battery under low light. The energy storage battery is a high capacity lithium battery pack. The independent energy system can be integrated on the solar unmanned plane, the endurance of the unmanned plane can be greatly increased, the size of the solar unmanned plane can be reduced, meanwhile, the long-time power guarantee can be provided for other auxiliary functions of the unmanned plane, and the solar unmanned plane can be applied to various application fields.

The invention discloses a solar maximum power tracking method, which comprises the following steps of: firstly, carrying out global optimizing by using a larger-step-length disturbance method, finding a global maximum power point, tracking the maximum power point by using an incremental conductance method, and absorbing the advantages of the two methods to ensure the correctness of the current maximum power point; and secondly, locking the found maximum power point for eight to ten minutes, and searching the maximum power point for the second time after eight to ten minutes. The invention also discloses a charging device by using the solar maximum power tracking method. A control end of a buck type conversion module of the charging device is connected with a maximum power point tracking (MPPT) core control module; a signal input end of the buck type conversion module is connected with a solar battery; and a signal output end of the buck type conversion module is connected with a storage battery. By the invention, the charging efficiency of the solar battery on the storage battery is improved.

The invention discloses a PSIM software-based solar maximum power point tracking algorithm and a simulation system. The simulation system comprises a solar photovoltaic cell model, a voltage sensor and a current sensor which are sequentially connected with the output end of the solar photovoltaic cell model, a solar maximum power tracking module MPPT.DLL, a comparer and a power conversion circuit, wherein after being respectively detected by the voltage sensor and the current sensor, the real-time voltage and the real-time current generated by the solar photovoltaic cell model are transferred into the solar maximum power tracking module MPPT.DLL to generate a control signal, the control signal and a carrier signal are processed by the comparer to output a PWM waveform signal, and the PWM waveform signal controls the duty factor of the power conversion circuit, thereby controlling the equivalent impedance of load connected with the output end of the power conversion circuit and realizing the maximum power point tracking of the photovoltaic cell.

The invention discloses a self-cleaning intelligent wireless control air purifier of an indoor solar photocatalyst. The air purifier comprises a bottom plate, a strut located on the bottom plate, and a machine body. A solar cell panel is fixed to the upper portion of the strut. The machine body is internally provided with a lithium iron phosphate cell energy storage system, an energy transmission management module, a photocatalysis purification control module, a purifier comprehensive module, a WIFI remote intelligent control module, a maximum power point tracking (MPPT) solar charging and discharging control module, a draught fan, a particle filtering net, an air inlet, an air outlet and an air flue. The solar maximum power point tracking power supply scheme and the intelligent wireless control scheme are adopted, the novel nano-composite photocatalysis self-cleaning material is adopted, and the intelligent wireless control air purifier is capable of generating power by itself and is free of maintaining.

In the invention, solar photovoltaic cells, alternating-current commercial power and lithium battery packs are compounded and used as power supplies to supply power circularly; a control algorithm of multiple paths of power supplies is designed on the basis of the solar maximum power point tracking theory; an inference rule set is established; a microprocessor module is used for carrying out intelligent control of power supply selection; an intelligent charging chip is combined to automatically charge and manage the lithium battery packs; multiple paths of DC-DC linear voltage-stabilizing modules of different types are connected with the output end of the device in parallel; and four-stage voltage multi-path output is provided. The system is specially designed for the actual needs of various kinds of low-voltage equipment under indoor and outdoor different environments, provides safe and stable energy output for a long time, is safe, environment-friendly, efficient, reliable, convenient and durable, and solves the problem of optimization of energy utilization when multiple paths of power supplies are used together.

The invention relates to a universal communication base station solar and wind energy centralized power supply system and a control method thereof and belongs to the field of new energy power generation technology and energy conservation. The communication base station new energy centralized power supply main loop and a communication base station monitor are used for providing a new energy power supply for the original base station alternating current and direct current power system. An embedded computer communication base station monitor consisting of a computer control technology and an artificial intelligent technology is adopted, and intelligent monitoring and control are realized. The designed solar maximum power point tracking (MPPT) controller and a wind energy controller can detect the power generating voltage of a solar panel and a wind energy generator, and the highest voltage value is tracked, so that the system has the highest efficiency. The designed inverter is based on the full-digital control technology of digital signal processor (DSP), a high-frequency sinusoidal pulse width modulation (SPWM) and an advanced insulated gate bipolar translator (IGBT) module, so that the system has high efficiency.

Switched capacitor multilevel output DC-DC converters can be used as panel integrated modules in a solar maximum power point tracking system. The system can also include a central input current-controlled ripple port inverter. The system can implement per panel MPPT without inter-panel communication, electrolytic capacitors or per panel magnetics. A Marx converter implementation of the switched capacitor module is studied. Average total efficiencies (tracking×conversion) greater than 93% can be achieved for a simulated 510 W, 3 panel, DC-DC system.

The invention provides an integrated double-system mobile light energy streetlamp holder, and relates to the field of lighting. The integrated double-system mobile light energy streetlamp holder comprises a substrate, an LED lamp assembly, a storage cell and a PCB; the substrate is provided with a main solar cell panel and an auxiliary solar cell panel, the storage cell comprises a main storage cell and an auxiliary storage cell, the PCB comprises a solar maximum power point tracking control circuit, a lithium cell protection circuit, a cell intelligent distribution circuit, a double-system microprocessor and an LED drive module. According to the integrated double-system mobile light energy streetlamp holder, the cruising power and the lighting brightness of the storage cell can be effectively improved, and the service life of the storage cell is prolonged.

Provided is a realization method of a photovoltaic unit. First, the type of a photovoltaic power station is distinguished; for a grid-connected photovoltaic power station or an off-grid photovoltaic power station of which a photovoltaic charging controller has a solar maximum power point tracking control function, the maximum limit value Ns of the number of photovoltaic components connected in series in a photovoltaic unit is calculated according to a formula (as shown in the description), and the value of the number of the photovoltaic components connected in series is Ns; for an off-grid photovoltaic power station of which a photovoltaic charging controller does not have a solar maximum power point tracking control function, the minimum limit value Nm of the number of photovoltaic components connected in series in a photovoltaic unit is calculated according to a formula (as shown in the description), and the value of the number of the photovoltaic components connected in series is Nm; the photovoltaic unit comprises photovoltaic components, a controller and a connecting circuit, the controller and the connecting circuit are connected to each other, and the connecting circuit and the photovoltaic components are connected to each other; and the controller can control series connection of the photovoltaic components according to the change of the environment through the connecting circuit. The method of the invention can avoid the design defects on the number of photovoltaic components connected in series and improve the power generation efficiency of the photovoltaic power station.

The invention provides a split type dual-system movable light energy street lamp cap and relates to the field of illumination. The split type dual-system movable light energy street lamp cap comprises a main solar cell panel, an auxiliary solar cell panel, an LED lamp assembly, a storage battery and a PCB. The auxiliary solar cell panel and the main solar cell panel are installed at the included angle ranging from 30 degrees to 90 degrees. The storage battery comprises a main storage battery body and an auxiliary storage battery body. The PCB comprises a solar maximum power point tracing control circuit, a lithium battery protective circuit, a battery intelligent distribution circuit, a dual-system microprocessor and an LED drive module. By means of the split type dual-system movable light energy street lamp cap, the endurance and illuminating brightness of the storage battery are effectively improved, and the service life of the storage battery is prolonged.

The invention relates to a solar LED (light emitting diode) lamp, which comprises a lamp body, a light source and driving components. The driving components comprise a solar panel input port, an energy storage battery port, an LED lamp output port and a driving circuit. The driving circuit comprises an MPPT (maximum power point tracking) +DC (direct current) -DC (direct current) circuit, an LED controller circuit, a solar voltage illuminance detection circuit, a DC-DC driving circuit, a charging voltage current detection circuit, an LED driving circuit, an LED current detection circuit, a DSC (digital signal controller), a key input circuit and an LCD (liquid crystal display) circuit. By integrating a charging controller and an LED driver into a same circuit, installation is simple, and cost is low; by adding a solar maximum power tracking circuit, an MPPT algorithm and an input-and-output protection circuit, the solar LED lamp is more efficient and more reliable, and popularization of the solar LED lamp is realized really.

The invention provides a durable hanging type flexible solar charger with observability. The durable hanging type flexible solar charger is composed of a flexible solar assembly, a flexible protecting sleeve, a power manager and hooks fixed on the periphery. The flexible solar assembly is formed by a flexible high-transparency front film, EVA adhesive, a flexible solar cell sheet and a flexible back film in a laminated mode under the high temperature and high pressure conditions. The bendability of the flexible protecting sleeve is not influenced while the flexible protecting sleeve can seal the tailoring edge of the flexible solar assembly, and the appearance of the flexible solar charger can be improved. The power manager is composed of a diode, a solar maximum power tracing system, a voltage stabilization chip and a USB female head, and used for guaranteeing stable output of the flexible solar charger. The durable hanging type flexible solar charger has the high durability and the high aesthetic performance.

The invention provides a control method with solar maximum power tracing. The method comprises the steps of: obtaining the voltage of the maximum power reference point; obtaining a real time digital power of a solar battery; determining the disturbance direction of a real time digital current voltage according to the real time digital power and adjusting the step length of a duty cycle according to formation or not and the change quantity of the real time digital current voltage; and adjusting the real time digital current voltage according to the duty cycle of a drive signal to realize solar maximum power tracing. The control method with solar maximum power tracing provided by the invention has the advantages of higher output efficiency, better tracing effect and lower cost, and can be widely applied to the application field of solar energy.

The invention provides a preceding-stage voltage-regulating type solar MPPT (maximum powder point tracking) system based on final powder feedback and a control method. The preceding-stage voltage-regulating type solar MPPT system comprises a solar battery pack, a DC (direct current)-DC module, energy storage equipment and an MCU (microprogrammed control unit) module, wherein the energy storage equipment is connected with an output end of the DC-DC module; an input end of the MCU module is connected with a sensor which is used for detecting the output voltage and the output current of the solar battery pack and the output voltage and the output current of the DC-DC module; a super-capacitor assembly is connected between the solar battery pack and the DC-DC module; two ends of the super-capacitor are respectively connected with an anode and a cathode of the solar battery pack; and a sensor which is used for detecting the voltage and the current of the output side of the super-capacitor assembly is connected with the MCU module. The preceding-stage voltage-regulating type solar MPPT system based on final power feedback and the control method have the advantages that influences of the conversion efficiency factor of a DC / DC circuit between the solar battery pack and a charging load and the direct outputting voltage of the solar battery pack on output power are considered when a solar maximum power tracking method is carried out, the preceding-stage voltage-regulating type solar MPPT system based on final powder feedback and the control method are designed, and the energy conversion efficiency of solar batteries is improved.

The invention, which relates to the technical field of new energy power generation, discloses a photovoltaic power generation system using a wind power plant ground and a transmission channel, comprising a wind turbine generator group with a reinforced platform, and a photovoltaic array which is distributed below a fan base platform, a wind power plant road and a power transmission corridor and adopts an adjustable double-sided double-glass assembly with an inclination angle of 15-35 degrees. The wind-solar coupling device comprises a mechanical connection mechanism (a fixed support and a maintenance channel) and an electrical coupling unit (a multi-port converter integrated output is connected to a booster station), the dynamic power regulation and control system (comprising an output prediction module and the like) based on wind-solar complementarity, and the current collection circuit with the current-carrying capacity is designed according to the wind-solar maximum superposition power. According to the system, land occupation and power transmission cost are reduced through collaborative layout, output fluctuation ratio is reduced through dynamic regulation and control, power grid acceptance capability is improved, generating capacity is improved through intelligent design, loss is reduced, energy recovery is realized, operation and maintenance cost is reduced, and the problems of resources, stability and efficiency in new energy development are effectively solved.

The invention discloses a portable solar charger capable of charging batteries of mobile equipment, belongs to the technical application field of solar batteries, and aims to equip a universal photovoltaic charging controller for battery development of portable communication equipment. The solar charger capable of charging various batteries is mainly characterized in that an IC (integrated circuit) module mounted in a box body comprises an MCU (microprogrammed control unit)-controlled MPPT (maximum power point tracking) solar maximum power output charging unit, a DC / DC control unit, a voltage and current detection unit, and a display and warning unit. Multidimensional folded flexible solar battery components or other power supplies are plugged in plug-in PV input interfaces; the battery types, voltage and capacities controlled by the rear end are various; and the front end adopts photovoltaic input, so that maximum photovoltaic input when the charger is used for batteries with different voltage can be achieved. The controller is applied in a field environment, has good water resistance, and is concise in display and convenient to operate and carry.

The invention relates to the technical field of ship power system energy management, and particularly discloses an energy management optimization method and system based on a ship microgrid, and the system comprises a photovoltaic power generation unit, an energy storage unit, and a diesel generator unit. The photovoltaic power generation unit is provided with a maximum power point tracking controller to achieve the maximum utilization rate of solar energy, the energy storage unit comprises a storage battery and a bidirectional power converter, the charge state is monitored in real time, a safety threshold value is set, and the diesel generator unit serves as a standby power supply. Based on an improved logic threshold control mechanism, a photovoltaic power generation unit is used as a main energy source and works at a maximum power point; the energy storage battery is a secondary buffer unit, a charge state safety threshold value is set, dynamic charging and discharging are carried out, and when photovoltaic output is surplus and the storage battery does not reach the upper limit, surplus electric energy is stored in the storage battery.

The application provides a wind-solar power station active power control method and device. The method comprises the following steps: obtaining grid dispatch instruction power and wind-solar maximum available power; when the grid dispatch instruction power is greater than the wind-solar maximum available power, taking the wind power maximum available power as a first wind power instruction power; determining a first photovoltaic instruction power according to the photovoltaic maximum available power, wherein the photovoltaic maximum available power is the sum of the first photovoltaic instruction power and a reserved power; obtaining a first grid connection point power at a previous moment and a second grid connection point power at a current moment; if the difference between the first grid connection point power and the second grid connection point power is greater than a preset value, determining a second photovoltaic instruction power according to the difference and the reserved power, wherein the sum of the first photovoltaic instruction power and the second photovoltaic instruction power is a final photovoltaic instruction power; and controlling the wind-solar power station according to the first wind power instruction power and the final photovoltaic instruction power. Through the application, the wind-solar power station active power is smoothed, and wind-solar fluctuation is inhibited.

The invention relates to a portable solar mobile power supply for a notebook computer. An integral circuit structure comprises a main control circuit, a solar maximum power point tracking (MPPT) charging system, a lithium battery protection circuit, a high-power boosting circuit, two high-power voltage reduction circuits, an output filter circuit and a light-emitting diode (LED) liquid crystal display. The main control circuit is respectively connected with the lithium battery protection circuit, the high-power boosting circuit, the two high-power voltage reduction circuits, the output filter circuit and the LED liquid crystal display. The portable solar mobile power supply has the advantages that portability and practicality of the solar mobile power supply are improved by novel circuit and casing shape structural design; a maximum power tracking technology is utilized, and efficiency of a solar cell panel in charging the solar mobile power supply is improved; automatically optimized high-power components are adopted to form the boosting circuit and the voltage reduction circuits, the portable solar mobile power supply has the output characteristics of being high in efficiency and capable of switching voltage, software and hardware double-layer overcharge, over discharge, overcurrent and over-temperature protection is adopted, the portable solar mobile power supply has better safety, and good reference significance is provided for design of the solar mobile power supply.

The present disclosure relates to systems and methods for balancing flying capacitors in high power multi-level buck or boost converters for renewable and solar maximum power point tracking (MPPT) inverter applications. An exemplary method includes initializing at least a multi-level converter circuit arrangement and an isolated secondary converter circuit arrangement, where the multi-level converter circuit arrangement includes at least a flying capacitor, and wherein the isolated secondary converter circuitry is configured to charge the flying capacitor according to a default operating state in response to initialization; determining that the voltage across the flying capacitor satisfies a threshold; and switching the isolated secondary converter circuitry from a default operating state to an inactive state based at least in part on the voltage satisfying a threshold.

The invention discloses a solar maximum power point following control detection system which comprises two photoresistors and two sensors. One of the two photoresistors is sleeved with a thin light-proof tube, and the other of the two photoresistors is arranged open; the two sensors are arranged on a motor driving flat plate in parallel; the open type photoresistor is used for measuring an environmental basic value, a platform is driven by a motor to form an angle with incident sunlight due to the existence of the thin light-proof tube, so that the two sensors generate large signal difference;a comparison threshold value of the photoresistor sleeved with the tube is set through the environmental light intensity measured by the open type photoresistor. The system can solve the defects of an existing scheme, is relatively simple and lower in manufacturing cost, and solves the problem of tracking the maximum power point of solar energy through skillful management in sensor arrangement.

The application relates to the field of new energy power generation technology and discloses a wind-solar power prediction deviation correction method and device for a wind-solar power station, which comprises the following steps: collecting power grid dispatching instructions, wind-solar maximum available power values, wind-solar combined short-term power prediction values and grid-connected point actual power values; judging the current operation state of an energy storage station based on the wind-solar maximum available power and the power grid dispatching instructions; when the current operation state of the energy storage station is a free power generation state and there is an error between the wind-solar combined short-term power prediction values and the grid-connected point actual power values, determining a wind-solar power prediction deviation compensation amount based on the wind-solar combined short-term power prediction values and the grid-connected point actual power values; and correcting the wind-solar power prediction deviation of the wind-solar power station based on the wind-solar power prediction deviation compensation amount. The application realizes correction of the wind-solar power prediction deviation, improves the comprehensive benefits of the wind-solar power station and guarantees the safe and reliable operation of a power system.

The invention discloses a solar maximum power collecting circuit and a solar maximum power rapid searching method. The solar maximum power collecting circuit comprises an MPPT (Maximum Power Point Tracking) searching module, an MPPT control module and an MCU module; the MPPT searching module comprises a current detection unit, a MOS tube Q1, a switch SW1, a diode D1 and a digital-to-analog converter U1B; the current detection unit is connected with a solar cell panel; the diode D1 is connected with the current detection unit; the MOS tube Q1 is connected with the current detection unit; the digital-to-analog converter U1B is connected with the MOS tube Q1; the MPPT control module comprises a comparator, a digital-to-analog converter U1A, a resistor R6, a resistor R9 and a buck-boost regulator U3; the digital-to-analog converter U1A is connected with the comparator; the comparator is connected with the output end of the comparator through the resistor R6, and a connection point between the resistor R6 and the comparator is connected with the buck-boost regulator U3 through the resistor R9; the MCU module is connected with the digital-to-analog converter U1A and the digital-to-analog converter U1B. The solar maximum power collecting circuit and the solar maximum power rapid searching method can quickly search out the maximum power point of the solar panel.

The invention discloses a solar maximum power point tracking system and method based on sun motion trails, and belongs to the technical field of solar application. The system comprises an initialization and pre-starting module, a sun-oriented movement track module, a data processing module, a control module, a driving module, an MPPT module, an energy storage module and a power supply, and the initialization and pre-starting module is used for initialization and pre-starting of the system and communicates with the sun-oriented movement track module; the sun-oriented movement track module is respectively communicated with the data processing module and the MPPT module, the data processing module, the control module and the driving module are communicated in sequence, the control module controls the driving module to move according to information transmitted by the data processing module, the MPPT module is communicated with the energy storage module, and output electric energy is stored in the energy storage module. According to the solar azimuth information provided by the spherical detector, the stepping motor is adjusted, so that sunlight always directly irradiates the photovoltaic power generation panel, the photovoltaic power generation panel works at the maximum power point, and the energy utilization rate is maximized.

The invention discloses a self-cleaning intelligent wireless control air purifier of an indoor solar photocatalyst. The air purifier comprises a bottom plate, a strut located on the bottom plate, and a machine body. A solar cell panel is fixed to the upper portion of the strut. The machine body is internally provided with a lithium iron phosphate cell energy storage system, an energy transmission management module, a photocatalysis purification control module, a purifier comprehensive module, a WIFI remote intelligent control module, a maximum power point tracking (MPPT) solar charging and discharging control module, a draught fan, a particle filtering net, an air inlet, an air outlet and an air flue. The solar maximum power point tracking power supply scheme and the intelligent wireless control scheme are adopted, the novel nano-composite photocatalysis self-cleaning material is adopted, and the intelligent wireless control air purifier is capable of generating power by itself and is free of maintaining.