Diseño aerodinámico, mecánico y de control de un aerogenerador de escala reducida basado en un prototipo de gran porte con ensayo en túnel de viento.

Abstract

In this thesis, the problem of creating a scaled-down wind turbine model with a 65-centimeter diameter is addressed. A state-of-the-art theory regarding the scaling-down processes of wind turbines is presented, compared to previous works in the field, and then applied to a large wind turbine in order to obtain the geometry of the scaled-down model. A structural analysis is presented to obtain the mechanical stresses and the deflection of the model. A control system is developed to achieve the optimal rotational speed according to the present wind velocity; this control system is composed solely of diodes, rheostats, and a brushless motor. Lastly, a wind tunnel test is conducted to verify the generated power in relation to wind velocity and to obtain the wake velocity distribution. This distribution is then compared with the one obtained through simulations using the software caffa3d.MBRi.