Effect of meteorological parameters on wind turbine behaviour - an analytical study.

摘要

An analysis has been performed to assess the nature of the interaction of the atmospheric wind with a horizontal axis wind turbine. Although the analysis has concentrated on the in-plane motion of the blades and the consequent effects on shaft torque, this same analysis can be extended in a similar fashion to calculate the out-of-plane or coning motions of the blades. The most important factor governing the magnitude of the torque fluctuations is the ratio of the wind turbine diameter to the lateral scale of the turbulence. As this ratio increases the r.m.s. of the torque fluctuations decreases. The normalized r.m.s. of the torque is only weakly dependent on design tip speed ratio, incidence, and the aerofoil lift/drag characteristic. In order to reduce the problem to a reasonable level for solution by analytical means, several simplifying assumptions have been made. (author).