A102 流入風の変動に対応した風力タービン用翼型の開発(風力システムの制御・改善・評価,OS2 自然エネルギー)

Abstract

Aerodynamic efficiency of the wind turbine depends on operating conditions such as tip speed ratio and pitch settings. Generally, the wind turbine blades are designed based on the blade element momentum theory. In this process, the aerodynamic performance of airfoil sections by two dimensional wind tunnel test with some fixed angle of attack are used. However, during wind turbine operation at the field, wind direction and wind velocity always changes. They bring about fluctuation of angle of attack of the rotor blade. Therefore clarification of airfoil characteristics in dynamic conditions is important for accurate estimation of power output and loads of wind turbine. In this study, wind tunnel experiments in static and dynamic condition are conducted.