
The nacelle (or gondola) is pointed maintaining the axis of the machine parallel to the upwind currents, which gust over its winged facets onto the blades, making the rotor hub rotation. The hub of the rotor is connected to a mast (slow mast) which is connected to a gearbox for resolutions. The gearbox makes the rotation to the next mast (fast mast) up to a number of adequate resolutions, to make the electric turbine produce the current, alternating on a 50Hhz frequency.
The wind turbine generators in the WinBis farm, weigh about 175 tons and they are supported on reinforced concrete foundations, which in turn have free standing jin poles placed on them, the poles are one metre wide and 33 metres deep, with 12 for each tower.
The jin poles, in fibreglass, reinforced by epoxy resin and carbon fibre, can reach up to rotation speeds of 16.1 resolutions per minute.
The wind turbine generators are equipped with an advanced control system, which allow monitoring on the rotation speed of the blades and to also make emergency stops. This takes place, for example, to protect the machinery when the rotation speed goes over the cut off speed of 25 m/s. The machine is also stopped when the wind drops below 3.5 m/s, which is the cut in limit to efficiently produce energy.
Turbine power curve:





