Load Control for Turbine Blades: A Non-Traditional Microtab Approach
Load Control for Turbine Blades: A Non-Traditional Microtab Approach
复制标题
涡轮叶片的负载控制：非传统的 Microtab 方法
DOI：
10.1115/wind2002-54
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
P. Morrison
中科院分区：
文献类型：
--
作者：
D. Nakafuji;C. P. Dam;J. Michel;P. Morrison
为传统航空应用开发的主动流量控制和负载减轻概念有可能减少风力涡轮机叶片上的扭矩、弯曲和疲劳负载，并有助于延长涡轮机的使用寿命。流量控制方面的早期工作大部分集中在稳定的空气动力学效益上。最近的技术主要集中在非稳态流动控制技术上，这些技术需要更深入地了解基础流动物理学以及记录各种与时间相关的空气动力学现象的传感器和用于控制的快速执行器。本文确定了一些用于减轻负载的开发控制概念以及可用于升力表面主动流动和负载控制的新平移微制造片概念，并探讨了它们对风力涡轮机转子叶片的适用性。具体来说，本文重点介绍基于创新的 microtab 方法的实验结果，用于非稳态主动负载控制。 Yen 等人之前关于这项工作的论文。重点关注多学科设计方法以及使用这些微型设备实现的显着升力增强。当前的研究将努力扩展到包括原型翼型以及代表性风力涡轮机翼型 S809 的不连续翼片效应、阻力效应以及下表面（压力侧）和上表面（吸力侧）翼片展开效应的动态结果。结果表明，microtab 概念可以提供宏观负载变化，并且能够主动控制升力和阻力以减轻负载。版权所有 © 2002，D. T. Yen Nakafuji 等人。和美国机械工程师协会
Active flow control and load mitigation concepts developed for traditional aeronautical applications have potential to decrease torque, bending and fatigue loads on wind turbine blades and to help increase turbine life. Much of the early work in flow control focused on steady aerodynamic benefits. More recent technologies have focused on unsteady flow control techniques which require a deeper understanding of the underlying flow physics as well as sensors to record the various time-dependent aerodynamic phenomena and fast actuators for control. This paper identifies some developmental control concepts for load mitigation along with a new translational microfabricated tab concept available for active flow and load control on lifting surfaces and explores their applicability for wind turbine rotor blades. Specifically, this paper focuses on experimental results based on an innovative microtab approach for unsteady, active load control. Previous papers on this effort by Yen et al. focused on the multi-disciplinary design methodology and the significant lift enhancement achieved using these micro-scale devices. The current research extends the effort to include dynamic results with discontinuous tab effects, effects on drag, and lower (pressure side) and upper surface (suction side) tab deployment effects for the prototype airfoil as well as for the S809, a representative wind turbine airfoil. Results show that the microtab concept can provide macro-scale load changes and is capable of offering active control of lift and drag forces for load alleviation.Copyright © 2002 by D. T. Yen Nakafuji et al. and ASME