Let's see together what is the inverter in a pv system and what is its role. The inverter is the basic element of a pv system, as it serves to convert the electrical energy produced in the form of direct current from the Pv Panels, into alternating current at 50Hz. This must necessarily happen since the appliances traditional in a house working on a frequency of 230V and, therefore, different from the one produced by the panels.Or always with an inverter , we can power a device from 220V using the power continues like that to a 12V battery (DC) produced by a photovoltaic system.