Aerodynamic design of wind turbine blade using high lift coefficient method

Based on the momentum-blade element theory and the Betz theory, the blade of 1.5 MW horizontal axis wind turbine was designed by using PROPID software. High lift coefficient method was used to study the aerodynamic design of the blade. The NPU-WA series wind turbine airfoils were used along the blade span. The tip loss, hub loss and Viterna speed-lose model were used to predict the aerodynamic performance of blade. The results show that using the advanced airfoils and the high lift coefficient method lead to shorter chord length and smaller blade area for large power wind turbine, which favor reducing the weight of the blade and the manufacturing cost.