基于复合形法的风力机桨叶优化设计

Optimal design for blades of wind turbines based on complex method

采用Glauert模型设计1.3MW的风力机桨叶,采用修正的片条理论为气动计算模型,以风力机年能量输出最大为优化目标,提出以风力机年平均输出功率和叶轮实度为优化目标,采用复合形法搜索最优的桨叶气动外形。对比Glauert模型的初始设计,利用复合形法进行优化大大降低了桨叶弦长和扭角。

The Glauert model was used to design the blade of 1.3 MW wind turbines, and the strip theory was applied to calculate the aerodynamic performance of the blade. To obtain the maximum annual output of the wind turbine, the complex method was used to search the optimal aerodynamic shape of the blade, with the objective of optimizing the annual average power output of the wind turbine and solidity of the blade. In comparison with the initial design based on Glauert model, the chord and the fix angle of the blade were decreased greatly through optimization by the complex method.