基于风剪切的多风轮风力发电系统叶片载荷研究  

THE BLADE LOAD RESEARCH OF THE MULTI-ROTOR WIND TURBINE IN WIND SHEAR FOLOW

作　　者：赵杰[1] 王一平[1,2] 黄群武[1] 鲁林平[1,3] 朱丽[2] 

机构地区：[1]天津大学化工学院,天津300072 [2]天津大学建筑学院,天津300072 [3]天津理工大学机械工程学院,天津300191

出　　处：《太阳能学报》2014年第7期1176-1182,共7页Acta Energiae Solaris Sinica

摘　　要：搭建由10个50 W水平轴风力机组成的多风轮发电系统,并对该系统所在位置风剪切系数进行测试。基于叶素理论建立水平轴风力发电机叶片载荷简化计算公式。在同样的风剪切条件下,计算总功率为500 W单风轮风力机和多风轮风力发电机的叶片载荷,考察叶片方位角、风轮半径、风力机安装高度、风剪切系数和风速对叶片载荷的影响。结果表明,风轮半径越长、风力机安装高度越低、风剪切系数越大,叶片旋转过程中载荷变化越大;用多个小型风力机取代单个大型风力机可有效减小风剪切的影响。In this paper, the multi-rotor wind power system was proposed and built, which includes ten horizontal axis wind turbines with 50W each. The wind shear coefficient of this system was measured. The simplified formula of blade load for horizontal axis wind power turbines was established based on the BEM theory. With the same wind shear condition, the blade loads of the single-rotor wind power turbine and the multi-rotor wind power turbine were calculated using the formula. The effects of blade azimuth, blade length, installation height of wind turbine, wind shear coefficient and wind speed on blade load were discussed. The results indicated that the load during the turbine rotating changes more with the longer blade, the lower installation height of the wind turbine, the larger wind shear coefficient. The effect of the wind shear on blade load can be reduced substantially with many small wind turbines instead of the large wind turbine.

关 键 词：风力发电 多风轮 风剪切 交变载荷 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]