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News Title:2013 Solar Energy
News Category:Recent News
Description:
Date:2013/7/8

Solar Energy



Photovoltaic generating means to use the photovoltaic effect in the semiconducting material of Solar cells to straightly transfer the radiation to energy. Solar cell, the key-point, will form a large area of solar component after series connected and to collocate with power controller and inverter, finally, the photovoltaic power system formed.。

The major performance parameters of existing main stream solar cell:

Type of Solar Cell Semi-material Depth Conversion Efficiency Particular
Silicon Crystalline Silicon A-Silicon 180um 15~18% The most efficient material in common application.
Poly-Silicon 180um 14~16% More easy to produce than A-Silicon, and colorful.
Amorphous Silicon a-Si、a-SiO、a-SiGe   0.0001mm 6~9% Less costs than Silicon, but efficiency is lower and unstable.
Compound Semiconductor 2 elements GaAs   18~30% High efficiency, toxic, and applied in aerospace.
CdTe 0.008mm 10~12% First Solar was completed production, and the costs lower than $1, but Cd material is banned by many countries because of the pollution.
3 elements CuInSe2 0.003mm 10~12% Most elements, with ability to collect Full Spectrum that the Indium is restrained to get.
Organic Semiconductor       1%以下  

According to the form of usage, that can be divided into 2 ways: Independent off-grid system and Parallel on-grid system.

Following is the principle:

Photovoltaic has a special material type from the vision of specialty of material usage and install form, it calls BIPV.
BIPV provides a new conception of “building generates energy.” It means to combine building and photovoltaic generating, and install the photovoltaic devices on the external structure of the building.
BIPV device should be made according to building materials standard and equip reliable generating ability, and that’s the “building element” of generating.

• BIPV element can be divided into 2 forms:
PV Roof
PV Wall
A perfect BIPV system should equip with the BOE device, such as load, battery, invertor, control system, so that could be a real power providing system. BIPV can be Photovoltaic grid-connected system, means to connect into the electric fence through the device, or become the independent power generation system to supply stable electricity for partial areas.

 

 


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