Solar photovoltaic power generation

Solar power spectral thermal power generation and photovoltaic power generation. No matter the production, development speed and development prospect, solar-thermal power generation are miss photovoltaic power generation. May for photovoltaic popularize widely contact solar-thermal power generation is less, usually said private solar power often refer to

solar spectral thermal power generation and photovoltaic power generation. No matter the production, development speed and development prospect, solar-thermal power generation are miss photovoltaic power generation. Widely popularization for photovoltaic solar-thermal power generation is less, and contact normally folk say solar power often means the solar photovoltaic power generation, hereinafter referred to as the photoelectric. Solar photovoltaic power generation system is to use the light of the semiconductor interface will be born v effect in a technology light energy directly into electrical energy.

solar photoelectric conversion refers to the sun radiation energy photons through the process of semiconductor material into electrical energy, commonly known as 'photovoltaic effect', the solar battery is to use made of the effect. When the sun to the semiconductor, some of the surface reflection out, the rest is absorbed by the semiconductor or through. Light that is absorbed, of course, there are some become hot, other photons with the composition of the valence electron collision of the semiconductor, electronics - result Hole pair. In this way, light energy to produce electrical - Hole to form into electrical energy, the presence of P - in the semiconductor N junction, formed in the P and n on both sides of the interface electric field, potential barrier to electronic drive to n area, hole to P drive area, so as to make the n area have excess electrons, excess cavitation, P area, in the P - N junction formation and barrier near the electric field in the opposite direction of light field. Photoproduction electric field except for sold situation as part of the base outside, also make the p-type layer positively charged, negatively charged n-type layer, in thin layer between the n and P area produce so-called photovoltaic electromotive force. If respectively in the p-type and n-type layer on weld metal lead, connected to the load, the external circuit there is an electric current passes through. So the formation of battery components one by one, put them in series, in parallel, can produce certain voltage and current, output power.

solar photovoltaic power generation system is divided into off-grid photovoltaic power generation systems, photovoltaic grid photovoltaic power generation systems and distributed systems.

with grid photovoltaic power generation system is solar energy components of direct current (dc) through the grid inverter converted to meet the requirements of the mains grid ac direct access to the public after the power grid. Main characteristic is to the power generation can be directly to the power grid, the grid unified deployment of supply power to users.