基于BLADED软件的大型风力机叶片气动分析

Aerodynamic analysis of a large-scale wind turbine blade based on BLADED software

基于BLADED软件,根据德国GL2003国际标准,对应用于GL3A风场的某款1.50 MW大型风力机叶片的气动额定功率、风能利用系数、疲劳载荷、极限载荷等进行分析。研究结果表明:在与某款1.65 MW风力发电机组匹配时,该叶片在风速为11.0 m/s时的额定功率能达到1.65 MW;在叶尖速比为7.8～11.4时,其风能利用系数均在0.460以上,在叶尖速比为9.5时,其最大风能利用系数可达0.486,表明该叶片具有较好的气动性能和较宽的风速适应范围;其叶根等效疲劳载荷为2.107 7 MN.m,叶根极限挥舞载荷为4.614 6 MN.m,均比该叶片载荷的原设计值小,说明其应用是安全的。

Based on BLADED software,according to the GL2003 international standard,the aerodynamic rated power,power coefficient,fatigue load and extreme load of a kind of 1.50 MW large-scale wind turbine blade applied in the GL3A wind field were analyzed.The results show that the blade can reach 1.65 MW when it is applied in the wind turbine at the rated power of 1.65 MW at the wind speed of 11.0 m/s.The blade’s power coefficient is above 0.46 when its tip speed ratio is between 7.8 and 11.4.The blade’s maximum power coefficient is 0.486 when its tip speed ratio is 9.5.It is indicated that the blade has good aerodynamic performance and wide scope of wind speed adaptive capacity.The blade root’s equivalent fatigue load is 2.107 7 MN.m,and its extreme flapwise load is 4.614 6 MN.m.The loads are both less than the original designed loads,so the blade’s application is safe.