组合型垂直轴风力机结合角度对起动性的影响

Starting Performance Effects of Combining Angle on Combined Type VAWT

与Savonius风轮组合使用是改善直线翼垂直轴风力机起动性的重要方法,而二者的结合角度对组合型垂直轴风力机的起动性有很大影响。首先,设计了采用FX63-145和NACA0018翼型的直线翼垂直轴风力机和Savonius风轮,利用风洞试验测试并分析了各自的起动性。然后,分别将Savonius风轮的最佳起动区域与两种直线翼垂直风力机的最差起动区域和最佳起动区域进行组合,测试了在这4种不同组合方式下的组合型垂直轴风力机的起动性。结果表明:对于采用对称翼型的直线翼垂直轴风力机,将直线翼垂直轴风力机的最佳起动区域与Savonius风轮的最佳起动区域结合的方法可以更好地提高组合型垂直轴风力机的起动性。而对于采用非对称翼型的直线翼垂直轴风力机,两种组合方式各有优缺点。

Combined with Savonius rotor is an important way to improve starting performance of straight-bladed vertical axis wind turbine （ SB - VAWT）. The starting performance of the combined type VAWT was largely affected by the combining angle of the two type turbines. Firstly, an SB- VAWT with NACA0018 and FX63 - 145 airfoils and a Savonius rotor were made and their starting performances were respectively tested. Then, optimal starting performance area of Savonius rotor was respectively combined with optimal starting performance area and the worse starting performance of SB - VAWT, starting performances of combined type VAWT with four different combining ways were tested by using a wind tunnel. For SB - VAWT with symmetrical airfoils, better starting performance of combined type VAWT can be obtained when its optimal starting performance area was combined with Savonius rotor. For SB - VAWT with asymmetric airfoils, both of the two ways have advantages and disadvantages.