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Unit-lll, , V, , Course outcome : O03 - Explain Solar PV system, types,, environmental impacts, and solar cells. Know advantages and, disadvantages.

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Photovoltaic effect solar cell, , The "photovoltaic effect" is the basic physical process, through which a solar cell converts sunlight into electricity., , In typical solar cell , a p-n junction is formed between two, types of semiconductor namely P- type and N-Type, semiconductors., , When Sunlight strikes a photovoltaic cell, the electronsHole pairs are formed. The electric field existing across P-N, junction causes the electron hole pairs to separate., , As free electrons are generated, they can be collected via, an external circuit and flow from N-type to P-Type material., thus the current flow takes place.

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Solar power, , >» Solar power is the conversion of sunlight into, electricity, either directly using photovoltaics, (PV), or indirectly using concentrated solar, power (CSP)., , > Concentrated solar power systems use lenses, or mirrors and tracking systems to focus a, large area of sunlight into a small beam., , > Photovoltaics convert light into an electric, current using the photovoltaic effect.

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Solar Cell to Solar Farm, , | Many cells make 4 "Many modules make "Many arrays make a ], module an array solar farm, , , , Cell, , , , Module

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From a solar cell, to a PV System, , , , as, , Solar Module, , , , Solar Cell, , Electricity Meter, AC Isolator, , Fusebox, Inverter PV-Syste m, , , , , , Battery, , Charge Controller, _ Generation Meter, , , , DC Isolator, , Cabling, Mounting, Tracking System, , Solar Array