Design and Feasibility of Active Control Surfaces on Wind Turbine Blade Systems

Cairns, Doug S.; Blockey, JC; Ehresman, Jon

doi:10.2514/6.2008-1341

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…ATEG application on smart rotors is aimed at load alleviation [52,53] and stall control [54,55]. Several aeroelastic codes were developed for active load control on MW-scale turbines [56][57][58].…”

Section: Adaptive Trailing Edge Geometry (Ateg)mentioning

confidence: 99%

Review of Flow-Control Devices for Wind-Turbine Performance Enhancement

Akhter

Omar

2021

Energies

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It is projected that, in the following years, the wind‐energy industry will maintain its rapid growth over the last few decades. Such growth in the industry has been accompanied by the desirability and demand for larger wind turbines aimed at harnessing more power. However, the fact that massive turbine blades inherently experience increased fatigue and ultimate loads is no secret, which compromise their structural lifecycle. Accordingly, this demands higher overhaul‐and‐maintenance (O&M) costs, leading to higher cost of energy (COE). Introduction of flow‐control devices on the wind turbine is a plausible solution to this issue. Flow‐control mechanisms feature the ability to effectively enhance/suppress turbulence, advance/delay flow transition, and prevent/promote separation, leading to enhancement in aerodynamic and aeroacoustics performance, load alleviation and fluctuation suppression, and eventually wind turbine power augmentation. These flow‐control devices are operated primarily under two schemes: passive and active control. Development and optimization of flow‐control devices present the potential for reduction in the COE, which is a major challenge against traditional power sources. This review performs a comprehensive and up‐to‐date literature survey of selected flow‐control devices, from their time of development up to the present. It contains a discussion on the current prospects and challenges faced by these devices, along with a comparative analysis centered on their aerodynamic controllability. General considerations and conclusive remarks are presented after the discussion.

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Section: Adaptive Trailing Edge Geometry (Ateg)mentioning

confidence: 99%

Review of Flow-Control Devices for Wind-Turbine Performance Enhancement

Akhter

Omar

2021

Energies

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“…San Diego State University [36], Montana State University [37], Sandia National Laboratories [38], etc.…”

Section: Aeroelastic Research In Usmentioning

confidence: 99%

Review of aeroelasticity for wind turbine: Current status, research focus and future perspectives

Zhang

Huang

2011

Front. Energy

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Aeroelasticity has become a critical issue for Multi-Megawatt wind turbine due to the longer and more flexible blade. In this paper, the development of aeroelasticity and aeroelastic codes for wind turbine is reviewed and the aeroelastic models for wind turbine blade are described, based on which, the current research focuses for large scale wind turbine are discussed, including instability problems for onshore and offshore wind turbines, effects of complex inflow, nonlinear effects of large blade deflection, smart structure technologies, and aerohydroelasticity. Finally, the future development of aeroelastic code for large scale wind turbine: aeroservoelasticity and smart rotor control; nonlinear aeroelasticity due to large blade deflection; full-scale 3D computational fluid dynamics (CFD) solution for dynamics; and aerohydroelasticity are presented.

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“…They have also been used for load alleviation [50,51] and stall control [52,53], resulting in up to a 13% reduction in blade-root bending moment [54] and up to a 15% reduction in extreme and fatigue loads on the shaft, nacelle, and tower [55].…”

Section: Introductionmentioning

confidence: 99%