Photovoltaic plant

Photovoltaic power station

Principles of solar photovoltaic power generation

Photovoltaic power generation is a direct power generation, refers to the use the P-N junction photogenerating effect principle of the solar battery as a semiconductor electronic devices, to effectively absorb solar radiation energy, through the conversion device to convert it into electricity, is the mainstream of solar power generation, with Renewable, non-polluting and other advantages.

At present, photovoltaic modules commonly used in photovoltaic power station are the following three kinds:
The basic unit of solar battery is "cell", a certain number of cell chips through the packaging process to make them in series together to form a battery module.

Monocrystalline silicon battery module: photoelectric conversion efficiency is about 18%, the highest reached 25%, is the highest type of solar cells in the photoelectric conversion efficiency in current, durable, more than 25 life years, but the production cost is high.

Polycrystalline silicon battery module: the production process is similar like  monocrystalline silicon cells, the photoelectric conversion efficiency is about 16%, the production cost is lower than the monocrystalline silicon cells, life is more than 20 years, slightly shorter than the monocrystalline silicon cells.

Amorphous silicon battery module: is a new type of thin film battery components, the production process is completely different with monocrystalline silicon and polycrystalline silicon cells, low production costs. Low light performance is better than crystalline silicon cells. But the photoelectric conversion efficiency is low, and the attenuation is faster. Due to the large-scale production process is not mature, so thin-film batteries is not recommended at the present stage.

Large - scale photovoltaic power station project case

Solar household on-grid power station project case