提高风电叶片风能利用和转化率的新理论和新方法——风力发电叶片出流角计算公式的建立及应用

New Theory and Method for Improving Utilization and Conversion Rate of Wind Turbine: Establishment of Blade Outlet Angle Formula and Its Application

提高风力发电机组的风能利用和转化率一直是风电领域专家研究的热点和难题.文中以动量定律为基本理论,通过分析流动空气与风力发电叶片迎风面和背风面的相互作用,发现了流动空气流出叶片的方向对风能利用和转化率有较大影响.因此,提出了提高风力发电叶片风能利用和转化率的流动空气从风力发电叶片迎风面流出角的确定理论和相应公式及流动空气从风力发电叶片背风面后缘流出角的确定理论和相应公式,从而为风力发电机组风能利用和转化率的提高提出了新的研究思路.文中的研究方法和结论将为风力发电叶片风能利用和转化率的提高提供借鉴和有益尝试.

Improvement in the wind energy utilization and conversion rate of wind turbine has been the focus and difficulty for experts in the field of wind power. The great influence of the direction of air flowing through blades on wind energy utilization and conversion rate was found based on the momentum law and the analysis of interaction between the flowing air and blade windward/leeward. A new theory and its corresponding formulas of the air outlet angle at blade windward/leeward trailing edge were put forward to improve the wind energy utilization and conversion rate, which proposed a new research idea for the improvement of wind energy utilization and conversion rate of wind turbine. The research methods and conclusions provide guidance and beneficial attempt for the improvement of wind power utilization and conversion rate of wind turbine blades.