A Wind power generation system (or wind farm) is generally made up of one or more than one wind turbines that convert wind kinetic energy into electrical power. The wind spins a rotator, usually provided with two or three blades that are connected to an horizontal axis. This rotation is later transferred to a power unit, thanks to a specific mechanical system that multiplies rotations. The produced power is appropriately transformed into a higher level of voltage and then is inserted into the power grid. The wind turbines are installed on a tower, high enough to catch the most of wind power avoiding the turbulence caused by the ground or by possible obstacles.
