Wind turbine performance analysis with aeroelastic effect

The aeroelastic effect for wind turbine blade is investigated in this article.A code is programmed,which utilizes the blade element momentum method to calculate the aerodynamics and adopts the multi-cell beams method to calculate the structural distortion,coupling with static aeroelastic balancing equation.The loads on the blade and the aerodynamic performance of the wind turbine at various wind speeds are calculated,and the influence of aeroelastics to the original design is analyzed.It is demonstrated that the aeroelastic effect has obvious influence to the large-size wind turbine performance at high wind speeds,and causes the aerodynamic loads redistribute,which would affect the accuracy of structure design.This method can be used to correct the conventional blade aerodynamic design and load calculation method.