BOT

The ECN Blade Optimisation Tool (BOT) has been developed to study and optimise the aerodynamic performance of wind turbine rotors. The program is used to determine the optimal chord and twist distribution, the optimal pitch settings, and the optimal tip speed ratio of rotor blades. Either active pitch or passive stall regulated wind turbines, both with constant, double, or variable rotor speed can be modeled in BOT.

The chord and twist distributions are optimised for maximum CP or for maximum annual energy yield for a given wind speed distribution. Constraints for chord and twist values can be applied at any radial position, which are then excluded from the optimisation process. In this way a maximum chord (for transportation purposes), or an adapted twist at the tip (for noise reduction) can be easily applied.

ECN has sold licenses of the Blade Optimisation Tool to leading wind turbine and blade designers world wide.

For more information about BOT, click here.

The Aerodynamic Table Generator (ATG) is a computer program for generating aerodynamic coefficients for wind turbine rotor blades. ATG is developed at Energy Research Centre of the Netherlands (ECN). The measured aerodynamic coefficients in the database are provided by Delft University of Technology (TU Delft). The ATG software is especially useful in combination with the ECN Blade Optimisation Tool (BOT) software.

For more information about ATG click here.