The most vulnerable components of a wind turbine are: the gearbox (preventive maintenance by frequent oil changes); yawing brake system; damping elements and vibration sensors; blades that need to be constantly monitored and may require to be cleaned or exchanged after 5-10 years of operation; electronic control system; and bearings.
Academy_Turbine
What is a Nacelle?
The Nacelle hosts the drivetrain (bearing, gearbox, brake, generator) and power electronics equipment (converters, transformers) in a turbine.
What are the main degrees of freedom of a turbine?
It has three: the rotation of the rotor (azimuth), the rotation of the nacelle into the wind (yaw) and the rotation of the blades in their lengthwise axis (pitch).
What is the rated power of a turbine?
The rated power is the power output limit that is fixed with the electric generator.
What are the minimum and maximum rotation speed of a turbine?
At low speeds, there is not enough wind for the turbine to rotate. The wind speed when the turbine begins to rotate is the cut-in speed. The maximum wind speed where power can be produced safely is the cut-out speed, as with stronger winds the loads in the rotor will be too large. The cut-in and cut-out speeds depend on each turbine.