With millions of years evolution, owls have developed many excellent characteristics in terms their flight. The speed an owl flight is similar to the relative blade a small wind turbine with respect air. Therefore, wing airfoil selected as design reduce flow separation under low Reynolds number. In this study, we analyze wing-section and non-smooth leading-edge shape owl's wing, implement ortho...

Blade optimization methods are crucial for wind turbine design. In this research, a new set of values the parameters Particle Swarm Optimization (PSO) method is proposed, and its effects on enhancement power generation NREL WP-Baseline 1.5 MW horizontal axis investigated. First, PSO tuned, convergence speed optimal accuracy objective function improved. Then, Class/Shape Transformation (CST) emp...

A method for numerically simulating a three-dimensional field of turbulent windspeed (the “Sandia method”) for use in the aerodynamic and structural analyses of wind turbines is presented. The required inputs are single point power spectral densities (PSDs) and the coherence function. Suggestions for appropriate inputs and an example calculation are included. The simulation method is used to ob...

Dual-Doppler lidar is a powerful remote sensing technique that can accurately measure horizontal wind speeds and enable the reconstruction of two-dimensional wind fields based on measurements from two separate lidars. Previous research has provided a framework of dual-Doppler algorithms for processing both radar and lidar measurements, but their application to wake measurements has not been add...

A critical speed controller for avoiding a certain rotational speed is presented. The controller is useful for variable speed wind turbines with a natural frequency in the operating range. The controller has been simulated, implemented and tested on an open site 12 kW vertical axis wind turbine prototype. The controller is based on an adaptation of the optimum torque control. Two lookup tables ...

Due to the diminishing reserves of fossil fuels and increased pollution from exploitation of these fuels, the world is focusing on the renewable energy sources. Wind is being considered as one of the prime next generation energy sources. Considerable amount of research is being carried out on the innovative designs for maximizing the performance of wind turbines. Furthermore, a lot of research ...