Aeroelastic load control of large and flexible wind turbines through mechanically driven flaps

The load reduction of the wind turbine through the use of flaps actuated through novel mechanical network is studied. The aeroservoelastic model of the wind turbine couples the composite beam description for blades and tower to the unsteady vortex-lattice method for the aerodynamics. The trailing-ed...

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Main Authors: Wei, Xing, Ng, Bing Feng, Zhao, Xiaowei
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/144356
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1443562023-03-04T17:23:26Z Aeroelastic load control of large and flexible wind turbines through mechanically driven flaps Wei, Xing Ng, Bing Feng Zhao, Xiaowei School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Aeroelastic Load Control Mechanical Network Controller The load reduction of the wind turbine through the use of flaps actuated through novel mechanical network is studied. The aeroservoelastic model of the wind turbine couples the composite beam description for blades and tower to the unsteady vortex-lattice method for the aerodynamics. The trailing-edge flap dynamics are incorporated to the wind turbine model to enable the use of mechanical network to control the flap rotation. A passive mechanical controller is proposed, which senses the relative angular velocity of the trailing-edge flap and generate the control torque. The mechanical controller is realised by passive components including springs, dampers and inerters in rotational form. The parameters of the mechanical components and flap configuration parameters are optimised by H∞ and H2 optimisation, respectively. It is shown that mechanical controllers exhibit marked reductions in blade root-bending moment, blade tip deflection and tower top fore-aft deflection in the presence of external disturbances, especially with the optimised flap configuration parameters. Accepted version 2020-10-30T05:51:58Z 2020-10-30T05:51:58Z 2019 Journal Article Wei, X., Ng, B. F., & Zhao, X. (2019). Aeroelastic load control of large and flexible wind turbines through mechanically driven flaps. Journal of the Franklin Institute, 356(14), 7810–7835. doi:10.1016/j.jfranklin.2019.02.030 0016-0032 https://hdl.handle.net/10356/144356 10.1016/j.jfranklin.2019.02.030 14 356 7810 7835 en Journal of the Franklin Institute © 2019 The Franklin Institute. All rights reserved. This paper was published by Elsevier Ltd in Journal of the Franklin Institute and is made available with permission of The Franklin Institute. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Aeroelastic Load Control
Mechanical Network Controller
spellingShingle Engineering::Mechanical engineering
Aeroelastic Load Control
Mechanical Network Controller
Wei, Xing
Ng, Bing Feng
Zhao, Xiaowei
Aeroelastic load control of large and flexible wind turbines through mechanically driven flaps
description The load reduction of the wind turbine through the use of flaps actuated through novel mechanical network is studied. The aeroservoelastic model of the wind turbine couples the composite beam description for blades and tower to the unsteady vortex-lattice method for the aerodynamics. The trailing-edge flap dynamics are incorporated to the wind turbine model to enable the use of mechanical network to control the flap rotation. A passive mechanical controller is proposed, which senses the relative angular velocity of the trailing-edge flap and generate the control torque. The mechanical controller is realised by passive components including springs, dampers and inerters in rotational form. The parameters of the mechanical components and flap configuration parameters are optimised by H∞ and H2 optimisation, respectively. It is shown that mechanical controllers exhibit marked reductions in blade root-bending moment, blade tip deflection and tower top fore-aft deflection in the presence of external disturbances, especially with the optimised flap configuration parameters.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Wei, Xing
Ng, Bing Feng
Zhao, Xiaowei
format Article
author Wei, Xing
Ng, Bing Feng
Zhao, Xiaowei
author_sort Wei, Xing
title Aeroelastic load control of large and flexible wind turbines through mechanically driven flaps
title_short Aeroelastic load control of large and flexible wind turbines through mechanically driven flaps
title_full Aeroelastic load control of large and flexible wind turbines through mechanically driven flaps
title_fullStr Aeroelastic load control of large and flexible wind turbines through mechanically driven flaps
title_full_unstemmed Aeroelastic load control of large and flexible wind turbines through mechanically driven flaps
title_sort aeroelastic load control of large and flexible wind turbines through mechanically driven flaps
publishDate 2020
url https://hdl.handle.net/10356/144356
_version_ 1759856010320674816