水平軸風車のストール制御とその出力性能に関する研究

抄録

We discussed the effect of the stall control on a horizontal axis wind turbine having a blade with a flap at the trailing edge based on blade element momentum theory. The flap blade proposed in this study does not have any mechanical moving parts, moreover, it has feature ensuring long-term reliability. The flap blade has an advantage for increasing the lift coefficient than the symmetrical blade until the stall point. Thus, the flap blade can increase the initial torque for the wind turbine. The flap blade increased the drag coefficient than that of the symmetric blade in the stall condition, that is, in the large attack angle. The increase of the drag contributed for suppressing the torque of the wind turbine. Therefore, to increase the drag using the flap blade has advantage for the stall control in the strong wind condition.