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为提高立轴风力机的效率,对可变叶片安装角的立轴风力机进行了分析,根据机翼升力与阻力的理论,在固定来流风速和旋转速度下计算了叶片在每个方位角上产生力矩最大的最佳安装角的变化规律,为了更好的运行,对最佳安装角的变化规律进行了一定修改。计算比较了固定安装角度的叶片与可变安装角度的叶片旋转一周产生的力矩,结果表明叶片在最佳安装角下运行时,每一转的正力矩都有明显增大,平均力矩可提高14倍。多个叶片在最佳安装角下运行时的力矩变化较平稳。可变叶片安装角立轴风力机是一种有发展前途的动力设备。
In order to improve the efficiency of vertical axis wind turbine, a vertical axis wind turbine with variable blade mounting angle was analyzed. According to the theory of wing lift and drag, the blade was calculated at each azimuth at a fixed incoming wind speed and rotation speed The law of change of the best installation angle with the largest torque, and the change rule of the best installation angle have been modified for better operation. The results show that when the blade is operated at the optimal installation angle, the positive torque per revolution increases obviously and the average torque can be increased by 14 Times The torque variation of multiple blades running at optimal installation angle is relatively stable. Variable blade mounting angle vertical axis wind turbine is a promising power equipment.