Mini Photovoltaic (pv) energy system
Photovoltaic (pv) miniature energy system is made up of monocrystalline silicon solar panels, battery, controller, solar inverter, battery charger, portable box, etc. Its working principle is: solar cells convert solar energy into electrical energy during the day and for battery charging, electrical power can use battery electricity at any time. The power supply has to work independently, green environmental protection no pollution, no noise, safe and reliable, easy to carry, long life and other characteristics, suitable for emergency use less electricity and without electricity or out. Solar systems are also widely used in petroleum industry of cathodic protection system, communications industry base station, etc.
Central Solar inverter
Concentration is several parallel photovoltaic inverter technology group of string is connected to the same concentration of inverter dc input, In general,the larger power solar inverter use three-phase IGBT power modules, the smaller power solar inverter use field effect transistor, at the same time using DSP conversion controller to improve the quality of the output power, making it very close to the sine wave current, commonly used in large photovoltaic power station (> 10 kw) system. Biggest characteristic is the system is high power, low cost, but due to different pv group list, output voltage and current is often incomplete matching (especially the pv group by reason of cloudy, shade, stain was partly sheltered), adopting the way of centralized inverter can reduce the efficiency of the inverter process and can fall electric door. At the same time, the whole pv system reliability of generating a photovoltaic cell set was effected by work status. The latest research direction is using space vector modulation control as well as the development of new inverter topology, in order to obtain efficient part load conditions.
Basic steps of installing rooftop pv system
1 Ensure that the area of the roof, or other installation location size can accommodate the size which pv systems to be installed 2 when installation, need to check whether the roof able to withstand plus the quality of the pv system, if necessary also need to enhance the bearing capacity of the roof 3 according to the design standard of building roof, properly handle the roof 4 in strict accordance with the specification and the steps to install the equipment 5 Correct and well set grounding system, can effectively avoid lightning 6 check system runs well 7 to ensure design and related equipment can meet the needs of the local power grid interconnection Finally, by the authoritative testing institutions or electricity department to conduct a comprehensive test to the system
What is a solar battery?
Solar cells (Solar Cell) is a kind photoelectric component of energy conversion, after it expose, which can converts light energy into electrical energy. From the point of view of physics, someone called solar Photovoltaic cells, Photovoltaic, PV, Photo means Light (Light), and Voltaic means power (Electricity). There are many types of solar cells, according to the types of materials to distinguish, can be divided into Single Crystal Silicon (Single Crystal Silicon), poly (Polycrystal Silicon), Amorphous Silicon, Amorphous Silicon, a – Si), Ⅲ – V [including gallium arsenide (GaAs), indium phosphide (InP), indium gallium phosphide (InGaP)], Ⅱ – Ⅵ [including cadmium telluride (CdTe), copper indium selenide (CuInSe2)], etc.
I want to install a home solar power, how to operate?
The process is: First,understanding yours needs and advice to answer; Second,provide project installation site, housing type, roof structure, roof area, roof upload photos, the average monthly consumption ; Thirdly, provide preliminary design solution;Fouthly ,supply and installation and construction;Lastly ,net work access
What is basic device of distributed photovoltaic system?
The basic configuration is: solar panels, inverters, brackets, cables and installation accessories. Large power plants also need other auxiliary equipment transformers, power distribution cabinet.
How to estimate the installed capacity and generation of distributed PV systems?
Computing according To the actual area of your roof which can take advantage of , power plants and cement roof to the ground, it can be installed 50-70 watts per square meter of module; for color steel roof and pitched roof, every square meter can be installed 80- 100 watt module
What is the Distributed PV system?
Distributed PV systems is a grid system which use photovoltaic modules and convert solar energy directly into electricity grid systems. This system is located near the user, the power can be locally exploited to 10 kV and below voltage, connected to the grid, and a single and outlets (380V) does not exceed the total installed capacity of 6 MW, 220V single user side and network Total installed capacity is no more than eight kilowatts. Generally consists of the following components: 1, photovoltaic panels; 2, DC combiner box (optional); 3, the inverter; 4, two-way meter (grid provided free of charge). Currently the most widely distributed photovoltaic systems is roof of the building was built in photovoltaic power generation projects. Such projects must be connected to the public grid, together with the public power grid in the vicinity of the user, the principle is “the nearest power generation, the nearest grid, the nearest to convert.”
How to design home PV system?
First,collect your basic information, including the type of house, roof structure, roof area, the monthly power usage. Based on the above information,then design for you a most affordable system solutions to maximize benefits.
The application Range and installation of distributed PV systems
Distributed PV systems can be installed in any sunlit place, including: the ground, the top of the building, a side elevational, balcony, including in schools, hospitals, shopping malls, villas, houses, factories, enterprises and institutions roof, carport, top Gongjiaozhanpai most widely used; Installation are concrete, steel and tile color type three types.