交大开元太阳能

Power Principle

Principles of power generation is actually made use of photovoltaic materials, light some material in the micro-charge transfer occurred, that is, have a current.

Photovoltaic effect can produce many kinds of materials, such as: monocrystalline silicon, polycrystalline silicon, amorphous silicon and gallium arsenide, indium selenium, such as copper. Their power is basically the same principle, it is crystal as an example to describe the process of generating light. P-type silicon crystal doped phosphorus available through N-type silicon, the formation of P-N junction.

When the light of solar cells on the surface, was part of the silicon material to absorb photons; the photon energy transfer to the silicon atoms to make electronic transfers have taken place in Vietnam, a free e-P-N in the end both sides gathered to form a potential difference, when the external Access circuit, in the role of voltage, current will flow through an external circuit have a certain amount of output power. This process is essentially: photon energy into electrical energy.

Crystalline silicon solar cell manufacturing process:

"Si" is our planet's abundance of the most storage of materials. Since the 19th century, scientists have found a crystal silicon semiconductor properties, it has changed almost everything, even human thought. End of the 20th century, our lives can be seen everywhere, "Si" figure and role of crystalline silicon solar cells in the last 15 years, to form the industrialization of the fastest. Production process can be divided into five steps: a, the process of purification b, the process of pulling rod c, the process of slicing d, the course of the battery-e, the process of packaging.

The application of solar cells:

In the 1960s, scientists have used solar space technology - satellite communication power supply, at the end of the century, constantly in the human soul-searching process, so that the photovoltaic power generation and clean forms of energy have direct more Cordial, not only in space applications in many fields is also to show their talents. Such as: solar energy courtyard, household solar power generation systems, the independent village power supply systems, photovoltaic water pump (or irrigation water), communications power, oil pipeline cathodic protection, fiber optic communications pumping power, desalination systems, road signs in cities and towns , Highway signs, and so on. Europe and the United States and other advanced countries will be incorporated into the city photovoltaic power systems and remote areas in the natural world into the village power supply system development. And the construction of the solar system have been combined to form the trend of industrialization

Simple application

Solar power generation system consists of solar batteries, solar controller, battery (group). If the output power to 220V AC or 110V, also need to configure the inverter. The role of the various parts:

Solar panels
Solar panels and solar power generation system is the core part of the solar system, the highest value. Its role is to the sun's radiation is converted to electrical energy, sent or stored in batteries, or to promote the work load. Solar panels of the quality and cost of the entire system will directly determine the quality and cost;

Solar controller