极端风剪切风况下的风电叶片载荷智能控制流动机理研究

发布时间：2018-05-20 01:06

本文选题：智能叶片 + 尾缘襟翼　；参考：《工程热物理学报》2014年10期

【摘要】：本文以UpWind/NREL 5 MW为参考风力机,外部风况为IEC标准的极端风剪切(EWS),在自主开发的基于柔性尾缘襟翼(DTEF)的"智能叶片"整机气动伺服弹性仿真平台的基础上,研究了基于DTEF智能叶片系统在EWS情况下叶根所受极限载荷的变化情况,并同时分析了其对塔架,传动机构及变桨机构的影响。结果表明:采用该基于柔性尾缘襟翼的智能叶片系统不仅有效地减少了叶根所受极限载荷,同时对塔架,传动机构及变桨机构等受到的极限载荷都发挥了非常积极的作用。最后,详细分析了该控制系统背后的流动控制机理。结果表明:尾缘襟翼的主动作用有效地减弱了由于极端风剪切引起的叶片与流动之间较强的流固耦合作用。
[Abstract]:In this paper, the UpWind/NREL 5MW wind turbine is used as reference, and the external wind condition is extreme wind shear EWS with IEC standard. Based on the "intelligent blade" Aeroelastic simulation platform based on flexible trailing edge flap developed by ourselves, this paper presents a new Aeroelastic simulation platform for the whole machine. The variation of the limit load on the blade root under the condition of EWS based on the DTEF intelligent vane system is studied, and the influence on the tower, transmission mechanism and propeller mechanism is analyzed at the same time. The results show that the intelligent blade system based on flexible trailing edge flap not only effectively reduces the limit load on the blade root, but also plays a very active role in the limit load of tower, transmission mechanism and propeller mechanism. Finally, the flow control mechanism behind the control system is analyzed in detail. The results show that the active action of the trailing edge flap effectively weakens the fluid-solid coupling between the blade and the flow caused by extreme wind shear.
【作者单位】：中国科学院工程热物理研究所;中国科学院大学;
【基金】：国家自然科学基金(No.51222606) 中国科学院“百人计划”项目中丹合作项目(No.2010DFA62830)
【分类号】：TM315

【共引文献】