The growing environmental concerns and demand for alternatives to fossil fuel-based energy resources have increased interest in solar cells as a long-term, exhaust-less, environment-friendly and reliable energy technology.continuous efforts to develop various types of solar cells are being made in order to produce solar cells with improved efficiencies at lower costs, taking advantage of vast amount of free energy available from the sun-solar technology is being used in residential, commercial and military applications including space heating and cooling through solar architecture, portable water via distillation and disinfection, day lighting, solar hot water, solar cooking and high temperature process-heat for industrial purposes.
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The major components in solar energy based system is " Photovoltaic(PV) cell".
It is a solid state device, basically a p-n junction with a very large light- sensitive area that converts the light energy directly into electricity by the photovoltaic effect.
To increase their utility, dozens of individual PV cells are interconnected in a sealed and weather-proof package called "Module".
To achieve the desired voltage and current, modules are wired in series and parallel in a PV system allows designers to create solar power system that can meet a wide variety of electrical needs.
PV cells can be modeled as a current source in parallel with a diode. when there is no light present to generate any current the PV cell behaves like a diode. as the intensity of incident light increases, current is generated by the PV cell.
Started by Jordan Weller Dec 10, 2012. 0 Replies 0 Likes
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