基于Wilson法风力机叶片设计及试验研究

The design and experimental research of wind turbine blade based on Wilson method

基于MATLAB平台，采用Wilson方法设计了1台300W水平轴风力机，通过筛选选择某S翼型进行叶片设计，并对其气动性能进行了计算。计算结果表明，S翼型风轮有效尖速比范围较宽，功率系数Cp值在0.3以上的区域所对应的尖速比入为4～10．5，整体的功率系数变化平缓；最大推力系数G在高尖速比时变化平稳；有效转矩系数GM为3～12．3，S翼型叶片气动性能较好。自制风力机样机在低速风洞中进行试验，试验结果表明，在风速为4～14m／s时，与市场上某300W传统翼型风力机相比，S翼型风力机功率平均提高了30．76％，尤其在风速为4～6m／s时，S翼型风力机功率提高较大，可以更好地利用中低风速。通过计算和试验研究可知，该S翼型适用于小型风力机叶片的设计。

Based on Wilson theory, a 300 W horizontal axis wind turbine was designed by MATLAB, in which a kind of S profile was chosen, and its aerodynamic performance was calculated. The calcula- tion results show that the S airfoil wind turbine＇s effective tip speed ratio range is wide, and the area in which power coefficient beyond 0.3 corresponding tip speed ratio is 4q0.5,and power coefficient changes gently; The maximum thrust coefficient changes steadily; The torque coefficient is 3-12.3. Ex- periments were done in the B1/K2 low speed wind tunnel. The experimental resuhs show, S airfoil＇s aerodynamic performance is very good and its power increased by 30.76% than that of traditional airfoil when the speed is 4 rn/s-14 m/s. Because the power airfoil wind turbine can make better use of low wind the S airfoil is an ideal airfoil for wind turbine. increase more at the speed of 4 m/s - 6 m/s,the S speed. The calculation and experiment show that