The speed of the rotor depends on the pitch of the blades as well as the direction of the wind. Hence a proper positioning of the blade is required for highest efficiency. An absolute rotary encoder on the base of each blade ensures this.
The rotor and the nacelle must be in the right direction as compared to the wind in order to ensure proper functioning. Absolute Rotary encoders are used to achieve this precise positioning
FRABA encoders are already being used in large quantities in wind turbines worldwide. For specific needs FRABA can offer Optical as well as Magnetic Absolute Rotary Encoders. These precise, cost efficient systems are well suited for the harsh weather conditions the wind turbine has to withstand, especially continuous lightning strikes.
