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Effect of Pitch Angle on Structural and Aerodynamic Characteristics of Vertical-Axis Wind Turbines (VAWTs) Using Leading-Edge Protuberance Blades

Author

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  • Karthikvel Elangovan

    (Turbulence & Flow Control Laboratory, School of Mechanical Engineering, SASTRA Deemed to Be University, Thanjavur 613041, Tamil Nadu, India)

  • S. Nadaraja Pillai

    (Turbulence & Flow Control Laboratory, School of Mechanical Engineering, SASTRA Deemed to Be University, Thanjavur 613041, Tamil Nadu, India)

Abstract

An experimental investigation was carried out to understand the effects of LEP (leading-edge protuberance) blades on the structural characteristics of VAWTs. A series of experiments were performed on VAWTs with straight and LEP blades for a wide range of wind velocity (6 m/s to 20 m/s) and pitch angles (−20° to 20°), and the structural excitations on the VAWT structure were measured using a triaxial accelerometer in each case. The raw acceleration data were extensively processed in the time and frequency domains to identify the variation in structural excitation caused by the unsteady wind and aerodynamic loads on the VAWT structure. Understanding the aerodynamic changes and their impact on structural characteristics is essential. The current study examines how LEP influences the structural excitation of VAWTs. However, a great deal of aerodynamic variation was observed for the LEP blades, so the straight blades of the VAWT were replaced with various modified LEP blades, for which a similar set of experiments was carried out. The study presents a better performance (self-starting, stall-mitigating) for VAWTs with LEP 3 and 2 blades, with a significant reduction in the excitation of loads due to wind load and the changes in aerodynamics observed in the along- and across-wind directions.

Suggested Citation

  • Karthikvel Elangovan & S. Nadaraja Pillai, 2025. "Effect of Pitch Angle on Structural and Aerodynamic Characteristics of Vertical-Axis Wind Turbines (VAWTs) Using Leading-Edge Protuberance Blades," Energies, MDPI, vol. 18(2), pages 1-28, January.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:2:p:286-:d:1564552
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    References listed on IDEAS

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    1. Liu, Xiong & Liang, Shi & Li, Gangqiang & Godbole, Ajit & Lu, Cheng, 2020. "An improved dynamic stall model and its effect on wind turbine fatigue load prediction," Renewable Energy, Elsevier, vol. 156(C), pages 117-130.
    2. Liu, Xiong & Lu, Cheng & Li, Gangqiang & Godbole, Ajit & Chen, Yan, 2017. "Effects of aerodynamic damping on the tower load of offshore horizontal axis wind turbines," Applied Energy, Elsevier, vol. 204(C), pages 1101-1114.
    3. Francisco Pimenta & Vitor Liotto Pedrelli & Thea Vanelli & Filipe Magalhães, 2024. "On the Effect of Nonlinear Damping Sources in Output-Only Identification Methods Applied to Floating Wind Turbines," Energies, MDPI, vol. 17(7), pages 1-17, April.
    4. Pimenta, Francisco & Ribeiro, Daniel & Román, Adela & Magalhães, Filipe, 2024. "Predictive model for fatigue evaluation of floating wind turbines validated with experimental data," Renewable Energy, Elsevier, vol. 223(C).
    5. Wenxing Hao & Abdulshakur Abdi & Guobiao Wang & Fuzhong Wu, 2023. "Study on the Pitch Angle Effect on the Power Coefficient and Blade Fatigue Load of a Vertical Axis Wind Turbine," Energies, MDPI, vol. 16(21), pages 1-18, October.
    6. Sagharichi, A. & Zamani, M. & Ghasemi, A., 2018. "Effect of solidity on the performance of variable-pitch vertical axis wind turbine," Energy, Elsevier, vol. 161(C), pages 753-775.
    7. Mahmood Abduljabbar Hammad & Abdelgadir Mohamed Mahmoud & Ahmed M. Abdelrhman & Shamsul Sarip, 2024. "Performance Enhancement of H-Type Darrieus VAWT Using a Hybrid Method of Blade Pitch Angle Regulation," Energies, MDPI, vol. 17(16), pages 1-17, August.
    8. Rezaeiha, Abdolrahim & Kalkman, Ivo & Blocken, Bert, 2017. "Effect of pitch angle on power performance and aerodynamics of a vertical axis wind turbine," Applied Energy, Elsevier, vol. 197(C), pages 132-150.
    9. João Pacheco & Gustavo Oliveira & Filipe Magalhães & Carlos Moutinho & Álvaro Cunha, 2021. "Vibration-Based Monitoring of Wind Turbines: Influence of Layout and Noise of Sensors," Energies, MDPI, vol. 14(2), pages 1-19, January.
    10. Raciti Castelli, Marco & Dal Monte, Andrea & Quaresimin, Marino & Benini, Ernesto, 2013. "Numerical evaluation of aerodynamic and inertial contributions to Darrieus wind turbine blade deformation," Renewable Energy, Elsevier, vol. 51(C), pages 101-112.
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