Quantifying Trailing Edge Flap Control Capability on Wind Turbines in a Controlled Environment

As wind turbine diameters continue to increase, the cyclic loading experienced by blade due shear and yaw misalignment increases dramatically hindering development of larger more efficient turbines. Based on current literature, controlling a section trailing edge was found reduce loading. To quantify load control capability flap (TEF), an experimental rig designed evaluate TEF 3.5-m-diam operating under different tip speed ratios, angles, pitch angles inside large generation facility. The tested at two spanwise locations 0.82. instrumented capable measuring rotor torque, flapwise/edgewise root bending moment, normal force coefficient results show that use manipulating 40% flapwise moment 20%. relationship between angle both linear for all cases tested. also when centered it could effectively. presented here prove is reducing blades.