How does Solar Photovoltaic Work?
A Solar Photovoltaic System is made up of solar modules, an inverter, and a generation meter.
1. A solar photovoltaic panel is made up of a number of cells wired together (PV module) which convert energy gathered from sunlight into direct current (DC) electricity.
2 A PV cell consists of two thin layers of semi conducting materials (generally silicon). When sunlight shines on the PV cell it knocks electrons from the orbits of the semi conductor in sufficient number to generate direct current electricity.
3 With the aid of an inverter, direct current electricity is converted into alternating current (AC) power. Alternating current is the type of electricity required to run electrical appliances in the home.
Solar Photovoltaic Modules
Each panel is made from one or two layers of silicon and when the sun shines onto the panel it converts the Photons in the sunlight into electricity.
Electrons are knocked together between the positive and negative layers into a higher state of energy, the electrons then fall through holes in the positive layer onto a metal base plate which conducts the electricity in Direct Current (DC) to the Inverter. The stronger the sunshine, the more electricity is produced through electrons knocking together.
Inverter
Solar panels can’t create AC power by themselves, so the inverter converts the electricity from DC (direct current) into AC (alternating current) so that the power can be used by the plugs in your home or business.
Direct current only flows in one direction, while alternating current moves in both directions, meaning it can be sent long distances easily.
For the majority of installations the inverter works in the grid connected mode, meaning that all current created can be utilised including any surplus to requirements which can be exported to the National Grid.
Generation Meters
Solar PV systems registered for feed in tariffs and/or export to the grid require a generation meter to record the amount of power (kWh) produced by the system. All generations meters must be OFGEM approved and meet all the required standards. Meters should be located where the consumer can readily observe it.
For more information or an informal discussion please contact us on 01392 254435 or e-mail us at enquiries@enlightensystems.co.uk.
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