32 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 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.

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 provides an electrodeless system with a solar maximum power tracking control. The system comprises a solar electrodeless lamp ballast, a grid-connected inverter or a battery, and an electrodeless lamp; wherein the solar electrodeless lamp ballast obtains a reference point voltage of the maximum power of a solar power battery; according the increasing and the decreasing of a real-time digital power, the way of duty cycle of a driving signal is changed by using pulse width modulation, and the perturbation direction of the real-time digital DC voltage is correspondingly maintained or changed; step of the duty cycle is determined according to whether |URF-u(K)|>1/4URF is correct or not, as well as variation of the real-time digital DC voltage; and the DC voltage with the maximum output power is processed by the grid-connected inverter or the battery and is sent to the electrodeless lamp. The electrodeless system with solar maximum power tracking control has the characteristics of high output efficiency, better tracking effect and lower cost, and can be widely used in the field of solar energy applications.

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 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 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.