Aerodynamic characteristics analysis of downstream wind turbine considering yaw of upstream wind turbine
The downstream wind turbines suffered by the deflected wake are subjected to unbalanced aerodynamic loads and resulting in a significant increase in fatigue loads.Two NREL 5 MW wind turbines have been adopted to study the influence of the yaw control of upstream wind turbine on the aerodynamic characteristics of downstream wind turbine under staggered arrangement,based on open source software FAST.Farm.The results show that the downstream wind turbine is gradually in the core area of wind velocity deficit with the increase of yaw angle of the upstream wind turbine,the reduction of rotor power of the downstream wind turbine is significantly increased,and the rotor thrust suffered by the downstream wind turbine is gradually reduced.The yaw control of the upstream wind turbine will significantly affect the fluctuation characteristics of the aerodynamic load of the downstream wind turbine.When the yaw angle of the upstream wind turbine is 40 °,the standard deviation of the flapwise moment at the blade root of the downstream wind turbine increases by 50.5％compared with the case that the upstream wind turbine is not yawed.This study can provide a reference for the whole wind farm control collaborative optimization and aerodynamic characteristics analysis under yaw inflow.
万方数据
维普
