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Parameter study of sizing and placement of deformable trailing edge flap on blade fatigue load reduction

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  • Zhang, Mingming
  • Tan, Bin
  • Xu, Jianzhong

Abstract

This paper presents a numerical study on the parametric effect of deformable trailing edge flap (DTEF) on the fatigue load of a large-scale wind turbine blade. Investigations were conducted within the operation regions II and III of the turbine, respectively. Results showed that, compared with the original collective pitch method, the control effectively reduced the fatigue load on blade and drive-chain components, and positively affected the generator power and pitch system as well. Furthermore, the performances were gradually improved with increasing DTEF spanwise location from the rotor center, spanwise and central chordwise length, and deflection angle range, except for the worse performance with increasing spanwise location to the blade tip within region II. It was found that the smart control altered the nature of the flow-blade interactions and changed the in-phased fluid-structure synchronization into anti-phased interaction at main load frequencies, thus significantly enhancing the damping of fluid-structure system and contributing to greatly attenuated fatigue load on both rotor and drive-chain components. These phenomena happened for all primary load frequencies within region III, due to less flow detachment under the effect of the pitching function, determining its superiority over region II in terms of the control performance.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:77:y:2015:i:c:p:217-226
    DOI: 10.1016/j.renene.2014.12.022
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    References listed on IDEAS

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    1. Wei Yu & Ming Ming Zhang & Jian Zhong Xu, 2012. "Effect of Smart Rotor Control Using a Deformable Trailing Edge Flap on Load Reduction under Normal and Extreme Turbulence," Energies, MDPI, vol. 5(9), pages 1-19, September.
    2. 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.
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    Citations

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    Cited by:

    1. Li, Qing'an & Xu, Jianzhong & Maeda, Takao & Kamada, Yasunari & Nishimura, Shogo & Wu, Guangxing & Cai, Chang, 2019. "Laser Doppler Velocimetry (LDV) measurements of airfoil surface flow on a Horizontal Axis Wind Turbine in boundary layer," Energy, Elsevier, vol. 183(C), pages 341-357.
    2. Zhang, Mingming & Li, Xin & Tong, Jingxin & Xu, Jianzhong, 2020. "Load control of floating wind turbine on a Tension-Leg-Platform subject to extreme wind condition," Renewable Energy, Elsevier, vol. 151(C), pages 993-1007.
    3. Md Zishan Akhter & Farag Khalifa Omar, 2021. "Review of Flow-Control Devices for Wind-Turbine Performance Enhancement," Energies, MDPI, vol. 14(5), pages 1-35, February.
    4. 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.
    5. Zhang, Mingming & Li, Xin & Xu, Jianzhong, 2019. "Smart control of fatigue loads on a floating wind turbine with a tension-leg-platform," Renewable Energy, Elsevier, vol. 134(C), pages 745-756.
    6. 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.
    7. Novaes Menezes, Eduardo José & Araújo, Alex Maurício & Rohatgi, Janardan Singh & González del Foyo, Pedro Manuel, 2018. "Active load control of large wind turbines using state-space methods and disturbance accommodating control," Energy, Elsevier, vol. 150(C), pages 310-319.
    8. Jijian Lian & Yaya Jia & Haijun Wang & Fang Liu, 2016. "Numerical Study of the Aerodynamic Loads on Offshore Wind Turbines under Typhoon with Full Wind Direction," Energies, MDPI, vol. 9(8), pages 1-21, August.
    9. 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.
    10. Cheng, Biyi & Du, Jianjun & Yao, Yingxue, 2022. "Power prediction formula for blade design and optimization of Dual Darrieus Wind Turbines based on Taguchi Method and Genetic Expression Programming model," Renewable Energy, Elsevier, vol. 192(C), pages 583-605.
    11. Zhang, Mingming & Yang, Honglei & Xu, Jianzhong, 2017. "Numerical investigation of azimuth dependent smart rotor control on a large-scale offshore wind turbine," Renewable Energy, Elsevier, vol. 105(C), pages 248-256.
    12. Zhang, Wenguang & Bai, Xuejian & Wang, Yifeng & Han, Yue & Hu, Yong, 2018. "Optimization of sizing parameters and multi-objective control of trailing edge flaps on a smart rotor," Renewable Energy, Elsevier, vol. 129(PA), pages 75-91.

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