风剪切与平台纵摇对漂浮式风电机组气动失谐的影响  

Effect of Wind Shear and Platform Pitch Motion on Aerodynamic Mistune of Floating Offshore Wind Turbine

作　　者：郭翼泽 王晓东[1] 潘其云[1] 娄刻强 郭小江 Yi-ze Guo;Xiao-dong Wang;Qi-yun Pan;Ke-qiang Lou;Xiao-jiang Guo(Key Laboratory of CMCPPE Ministry of Education,North China Electric Power University;Huaneng Clean Energy Research Institute Company)

机构地区：[1]华北电力大学电站能量传递转化与系统教育部重点实验室 [2]华能集团清洁技术研究院有限公司

出　　处：《风机技术》2022年第3期44-51,共8页Chinese Journal of Turbomachinery

基　　金：国家自然科学基金(No.51876063);华能集团科技专项(HNKJ20-H88-01);新能源电力系统国家重点实验室开放课题(LAPS21014)。

摘　　要：漂浮式风电机组浮式平台在风浪流耦合作用下存在六自由度运动,使风轮旋转平面内的气动力不均匀,导致风轮产生气动失谐。而风剪切使风电机组的失谐特性更加明显。文中使用计算流体力学方法(CFD)研究风剪切来流与平台纵摇运动分别对风电机组总体性能与叶片不同展向截面气动载荷的影响。结果表明纵摇运动使风电机组的总体性能发生波动,且随着幅值的增加而增加。风剪切0.2与0.3使风电机组总体气动性能增加,且随着风剪切系数的增加而增加。平台纵摇使截面气动载荷的波动从外叶展到内叶展逐渐增大,风剪切造成的截面气动载荷的波动从外叶展到内叶展逐渐减小。风剪切与幅值较低的纵摇运动对截面气动载荷的影响相当。The six-degree freedom motion caused by wind,wave and current in the floating offshore wind turbine(FOWT)floating platform makes the aerodynamic force uneven in the rotation plane,resulting in an aerodynamic mistune effect.The wind shear amplifes the mistuned characteristics of wind turbines.In this paper,we used computational fluid dynamics(CFD)method to study the effects of wind shear and platform pitch motion on aerodynamics of a FOWT.The aerodynamic loading at different spanwise sections of blade.The results demonstrate that platform pitch makes the overall performance fluctuate and fluctuate aggressively with an increased amplitude.The wind shear condition of coefficients 0.2 and 0.3 make the power and thrust increase gradually with an increased coefficient.Platform pitch causes the fluctuation of the aerodynamic performance of different airfoil sections from outer span to inner span.Wind shear causes less fluctuation from the outer span to inner span.The fluctuation of aerodynamic loading at airfoil sections are similar comparing with wind shear and lower amplitude pitch motion.

关 键 词：漂浮式风电机组 风剪切 平台纵摇 失谐 CFD 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] TM315[电气工程—电机]