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Field testing of morphing flaps on a wind turbine blade using an outdoor rotating rig

Author

Listed:
  • Ai, Qing
  • Weaver, Paul M.
  • Barlas, Thanasis K.
  • Olsen, Anders S.
  • Madsen, Helge A.
  • Andersen, Tom L.

Abstract

In recent years, active flap devices on wind turbine blades have been shown to both reduce peak loads at the tower and extend blade fatigue life. Associated benefits include retrofitting existing tower infrastructure with longer and greater energy-producing blades whilst also extending service life of blades. In the current work, a novel wind turbine blade control method using morphing flaps has been successfully investigated and demonstrated using a scaled demonstrator mounted on an outdoor rotating test rig. Shape adaptive structures that remain conformal to the flow are increasingly referred to as morphing devices. As part of the INNWind.eu project, a novel morphing flap device was developed for a recently designed aerofoil. The proposed morphing flap comprises a light-weight carbon fibre laminate, 3D printed honeycomb core and a flexible silicone surface. A comprehensive test campaign using an outdoor rotating test rig under atmospheric conditions was carried out to assess the potential effectiveness. As shown by experimental data, the morphing flap provides good performance in terms of aerodynamic lift control of the blade and can provide dynamic load alleviation capability.

Suggested Citation

  • Ai, Qing & Weaver, Paul M. & Barlas, Thanasis K. & Olsen, Anders S. & Madsen, Helge A. & Andersen, Tom L., 2019. "Field testing of morphing flaps on a wind turbine blade using an outdoor rotating rig," Renewable Energy, Elsevier, vol. 133(C), pages 53-65.
    • Handle: RePEc:eee:renene:v:133:y:2019:i:c:p:53-65
    DOI: 10.1016/j.renene.2018.09.092
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    References listed on IDEAS

    as
    1. Kamliya Jawahar, Hasan & Ai, Qing & Azarpeyvand, Mahdi, 2018. "Experimental and numerical investigation of aerodynamic performance for airfoils with morphed trailing edges," Renewable Energy, Elsevier, vol. 127(C), pages 355-367.
    2. Zhang, Mingming & Tan, Bin & Xu, Jianzhong, 2016. "Smart fatigue load control on the large-scale wind turbine blades using different sensing signals," Renewable Energy, Elsevier, vol. 87(P1), pages 111-119.
    3. Zhang, Mingming & Yu, Wei & Xu, Jianzhong, 2014. "Aerodynamic physics of smart load control for wind turbine due to extreme wind shear," Renewable Energy, Elsevier, vol. 70(C), pages 204-210.
    4. Kaldellis, John K. & Zafirakis, D., 2011. "The wind energy (r)evolution: A short review of a long history," Renewable Energy, Elsevier, vol. 36(7), pages 1887-1901.
    5. Zhang, Mingming & Tan, Bin & Xu, Jianzhong, 2015. "Parameter study of sizing and placement of deformable trailing edge flap on blade fatigue load reduction," Renewable Energy, Elsevier, vol. 77(C), pages 217-226.
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    1. Zhuang, Chen & Yang, Gang & Zhu, Yawei & Hu, Dean, 2020. "Effect of morphed trailing-edge flap on aerodynamic load control for a wind turbine blade section," Renewable Energy, Elsevier, vol. 148(C), pages 964-974.
    2. Li, Juan & Wang, Yinan & Zhao, Xiaowei & Qi, Pengyuan, 2021. "Model free adaptive control of large and flexible wind turbine rotors with controllable flaps," Renewable Energy, Elsevier, vol. 180(C), pages 68-82.

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