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Observations of the starting behaviour of a small horizontalaxis wind turbine

Author

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  • Ebert, P.R.
  • Wood, D.H.

Abstract

This paper describes observations of the starting performance of a small horizontal-axis wind turbine in the context of a simple, quasi-steady analysis of the complex aerodynamics dominated by unsteadiness, high angles of attack, and low Reynolds number. Soon after they begin rotating, the blades can generate unexpectedly high torque. At the same time, the nondimensional pitch rate and reduced frequency are too small to suggest a significant increase of the torque through the effects of unsteadiness. The torque then decreases due to inappropriate blade angles of attack. This leads to a substantial “idle time” at both high and low wind speed, in which the rotating blades are accelerating only slowly and the angles of attack are slowly decreasing. When the angles are reduced to those giving high lift: drag ratios, the blades accelerate rapidly to complete the starting sequence by producing significant amounts of power. At low wind speeds, about 4 m/s, a gust is apparently required to complete the starting sequence.

Suggested Citation

  • Ebert, P.R. & Wood, D.H., 1997. "Observations of the starting behaviour of a small horizontalaxis wind turbine," Renewable Energy, Elsevier, vol. 12(3), pages 245-257.
    • Handle: RePEc:eee:renene:v:12:y:1997:i:3:p:245-257
    DOI: 10.1016/S0960-1481(97)00035-9
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    Cited by:

    1. Celik, Yunus & Ingham, Derek & Ma, Lin & Pourkashanian, Mohamed, 2022. "Design and aerodynamic performance analyses of the self-starting H-type VAWT having J-shaped aerofoils considering various design parameters using CFD," Energy, Elsevier, vol. 251(C).
    2. Rossetti, A. & Pavesi, G., 2013. "Comparison of different numerical approaches to the study of the H-Darrieus turbines start-up," Renewable Energy, Elsevier, vol. 50(C), pages 7-19.
    3. Ani, Samuel Ofordile & Polinder, Henk & Ferreira, Jan Abraham, 2014. "Small wind power generation using automotive alternator," Renewable Energy, Elsevier, vol. 66(C), pages 185-195.
    4. Mayer, C & Bechly, M.E & Hampsey, M & Wood, D.H, 2001. "The starting behaviour of a small horizontal-axis wind turbine," Renewable Energy, Elsevier, vol. 22(1), pages 411-417.
    5. Pourrajabian, Abolfazl & Dehghan, Maziar & Javed, Adeel & Wood, David, 2019. "Choosing an appropriate timber for a small wind turbine blade: A comparative study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 100(C), pages 1-8.
    6. Shafiqur Rehman & Md. Mahbub Alam & Luai M. Alhems & M. Mujahid Rafique, 2018. "Horizontal Axis Wind Turbine Blade Design Methodologies for Efficiency Enhancement—A Review," Energies, MDPI, vol. 11(3), pages 1-34, February.
    7. Pourrajabian, Abolfazl & Nazmi Afshar, Peyman Amir & Ahmadizadeh, Mehdi & Wood, David, 2016. "Aero-structural design and optimization of a small wind turbine blade," Renewable Energy, Elsevier, vol. 87(P2), pages 837-848.
    8. Muhammad Saif Ullah Khalid & David Wood & Arman Hemmati, 2022. "Self-Starting Characteristics and Flow-Induced Rotation of Single- and Dual-Stage Vertical-Axis Wind Turbines," Energies, MDPI, vol. 15(24), pages 1-19, December.
    9. Ying, Pei & Chen, Yong Kang & Xu, Yi Geng, 2015. "An aerodynamic analysis of a novel small wind turbine based on impulse turbine principles," Renewable Energy, Elsevier, vol. 75(C), pages 37-43.
    10. Daniel Micallef & Gerard Van Bussel, 2018. "A Review of Urban Wind Energy Research: Aerodynamics and Other Challenges," Energies, MDPI, vol. 11(9), pages 1-27, August.
    11. Sikandar Khan, 2023. "A Modeling Study Focused on Improving the Aerodynamic Performance of a Small Horizontal Axis Wind Turbine," Sustainability, MDPI, vol. 15(6), pages 1-15, March.
    12. Nikolaos Chrysochoidis-Antsos & Gerard J.W. van Bussel & Jan Bozelie & Sander M. Mertens & Ad J.M. van Wijk, 2021. "Performance Characteristics of A Micro Wind Turbine Integrated on A Noise Barrier," Energies, MDPI, vol. 14(5), pages 1-29, February.
    13. Jacob, Joe & Chatterjee, Dhiman, 2019. "Design methodology of hybrid turbine towards better extraction of wind energy," Renewable Energy, Elsevier, vol. 131(C), pages 625-643.

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