小型垂直軸風車の空気抵抗ブレーキに関する実験研究

（飛び出しブレーキの空気抵抗と回転数）

抄録

The vertical axis wind turbine isn’t sensitive to wind direction. However, since fast acceleration of the strong wind, it is necessary to prevent damage due to rapid increase in the rotational speed. In a series of studies, the aerodynamic brake to suppress the rise of the rotational speed has been taken up. When the rotational speed of the wind turbine is increased, the horizontal axis by the centrifugal force extends outwardly, at the same time, the brake plate attached to the axis is rotated 90°and the brake plate is subjected to a large air resistance. So far, the use of a suitable brake plates and springs suitable for a particular wind turbine can be widened operable wind speeds of the wind turbine. In this study, as a process to clarify the design guidelines to adapt the aerodynamic brake for a variety of vertical axis wind turbine, experiments using different sizes of the brake plates and spring constants are conducted and the effects of the elements are discussed.