Multi-point Optimization of Wind Turbine Blades Using Helicoidal Vortex Model

The availability of thorough wind assessment data has raised the question whether it would be possible to improve wind turbine power outputs with respect to existing data. At the University of California Davis wind turbine analysis codes have been developed as well as a wind turbine optimization code. This optimization is performed with respect to a specified wind speed. This chapter describes an attempt to expand the single-point optimization, that is performed with respect to one wind speed, to a multi-point optimization in which the probability distribution of wind speeds is taken into account. This multi-point optimization is expected to show the ability to trade-off between performances at different wind speeds. The trade-off is based on power output and the chance of occurrence. An objective function that describes the power production with respect to the discretized distribution function is defined. The optimization of the objective function is performed with respect to a limited drag force on the supporting tower.

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