Working of a wind turbine is illustrated in this video with the help of animation. The topic covered are blade design, use of brake, velocity sensor, yawing mechanism, blade tilting, wind turbine efficiency and Betz’s limit.
source/image(PrtSc): Learn Engineering
The wind makes the rotor spin; as the rotor spins, the movement of the blades drives a generator that creates energy. The motion of the blades turning is kinetic energy. It is this power that we convert into electricity.Wind turbines operate on a simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. Watch the video from Learn Engineering for more info:
The rotor is connected to the main shaft, which spins a generator to create electricity. The blades have a special curved shape, similar to the airfoil wings on a plane. The gearbox transfers its energy through a fast axis that is connected to the generator, which produces the electricity.
When the ther are very strong winds (25 m/s), the blades are feathered and the wind turbine slows down in order to prevent excessive voltages.The rotor turns a slow axis that is connected to a gear box that lifts the turning velocity from 13 to 1,500 revolutions per minute.