Solar photovoltaic power generation system is a new type of power generation system, which is based on the photovoltaic effect of the solar cell semiconductor materials, which can convert the solar radiation directly into electricity. It has two ways of independent operation and grid connected operation. Stand-alone PV system requires a battery as an energy storage device, mainly used for non grid in remote areas and scattered population areas, the system cost is very high; in the regions with public power grid, grid connected photovoltaic system grid connected operation, save the battery, not only can greatly reduce the cost of environmental protection, but also has a higher performance the power generation efficiency and better.

Solar thermal power generation and photovoltaic power generation. Generally speaking, solar power refers to solar photovoltaic power generation". Photovoltaic power generation is a technology that converts light energy into electric energy directly by using the photovoltaic effect of semiconductor interface. The key element of this technology is solar cells. After the solar cell is connected in series, the utility model can form a large area solar cell component, and then a photovoltaic power generation device is formed on the basis of the power controller.

In theory, photovoltaic power generation technology can be used for any occasion where the need for power supply, to the spacecraft, down to the household power supply, as large as the megawatt class power plants, small toys, photovoltaic power everywhere. Solar photovoltaic power generation is the most basic components of solar cells (chips), there are monocrystalline silicon, polycrystalline silicon, amorphous silicon and thin film batteries, etc.. Among them, the maximum amount of single crystal and polycrystalline batteries, amorphous batteries used in some small systems and computer auxiliary power supply, etc.. China made crystal silicon battery efficiency in the 10 to about 13%, the international similar products efficiency of about 12 to 14%. A solar panel consisting of one or more solar cells is called a photovoltaic module. Photovoltaic products are mainly used in three aspects: one is to provide electric power; two is the solar household electronic products, such as various types of solar charger, solar lights and solar lawn lamps; the three is the grid, this in developed countries has a large area of promotion. By 2009, China's grid connected power generation has not yet begun a comprehensive promotion, however, part of the 2008 Olympic Games in Beijing is powered by solar power and wind power.

It is predicted that solar photovoltaic power generation in twenty-first Century will occupy an important seat in the world's energy consumption, not only to replace some of the conventional energy, and will become the main body of the world's energy supply. It is expected that by 2030, renewable energy in total energy structure, accounting for more than 30%, while the solar photovoltaic power generation in the world's total electricity supply in the proportion will reach more than 10%; by 2040, the renewable energy will account for 50% of the total energy consumption, solar photovoltaic power generation will account for more than 20% of the total power; by the end of twenty-first Century, renewable the energy in the energy structure, accounting for more than 80%, solar power will account for more than 60%. These figures show the development of solar photovoltaic industry and its important strategic position in the field of energy.

application area

A user of solar power: (1) the small power ranging from 10-100W, used in remote areas without electricity, such as plateau Island, pastoral areas, border posts and other military and civilian living electricity, such as lighting televisiontape recorders; (2) 3-5KW family roof grid connected power system; (3): to solve the photovoltaic pump areas without electricity deep wells for drinking and irrigation.

Two, traffic areas such as beacon lights, traffic lights, traffic warning / railway / sign lamp, street lamp, high-altitude obstacle lamp, Yu Xiang highway / railway wireless telephone booth unattended power station etc..

Three, communication / communication field: solar unattended microwave relay station, optical cable maintenance station, broadcast / communication / paging power supply system; rural carrier telephone photovoltaic system, small communication machine, soldier GPS power supply, etc..

Four, petroleum, marine, meteorological field: oil pipeline and reservoir gate cathodic protection solar power system, oil drilling platform life and emergency power supply, marine detection equipment, meteorological / hydrological observation equipment.

Five, family lamp power: such as garden lights, street lamps, hand lamps, lamp, lamp, Camping Hiking Fishing lights black lights tapping lights, energy-saving lamps.

Six, photovoltaic power plants: 10KW-50MW stand-alone photovoltaic power station, scenery (diesel) complementary power plants, a variety of large parking plant charging stations, etc..

Seven, solar building will be combined with solar power and building materials, making the future of large-scale construction to achieve self-sufficiency in power, is a major development direction in the future.

Eight, other areas including: (1) and auto accessories: solar and electric vehicles, battery charging equipment, automobile air conditioner, fan, cold boxes; (2) the regeneration power generation system of solar hydrogen fuel cell; (3) seawater desalination equipment power supply; (4) satellites, spacecraft, space solar power station etc..