What is a photovoltaic or wind system and how do they operate?
A photovoltaic system is a system that produces electrical energy using solar radiation as the source. The system has the following elements (see diagram): – A photovoltaic generator. Composed of photovoltaic modules which receive the solar radiation and transform it into direct (DC) electrical current at a low voltage (12 to 48 V). – An accumulator or battery, that stores the energy produced by the generator and allows the supply of electrical current in the absence of daylight or on cloudy days. – A charge controller, whose mission it is to avoid overcharges or over discharges of the battery – problems which will produce irreversible damages – and to ensure that the system always operates at the point of maximum efficiency. – An inverter (optional), that transforms the DC current stored in the battery to 230 V AC current. A photovoltaic installation without inverter, consumption at DC A photovoltaic installation with inverter, consumption at 230 V AC Once the energy is stored in the
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