How a wind turbine works
The process is quite simple. The rotor is activated by the wind. Its rotation is transmitted to an input shaft that powers an electric generator. This so-called yaw system enables the nacelle to be positioned based on the direction of the wind. The rotor starts working only when wind speed is greater than 10 km/h, while the wind turbine shuts down at speeds of over 90 km/h for safety reasons.
Basically, the wind’s kinetic energy is converted into mechanical energy by the rotor. A gear box transforms the blades’ slow rotations (between 18 and 25 per minute) into faster rotations (up to 1,500 per minute) that can power the electric generator. The electric generator converts the mechanical energy into electricity. A transformer transfers the electricity from one circuit to another (in this case the electric grid), modifying its characteristics.
Various control systems are located on the nacelle to continuously monitor the wind turbine’s operational parameters, thereby producing renewable energy safely and maximizing the efficiency of the wind farm.