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Quasi-Steady Analysis of a Small Wind Rotor with Swept Blades

Author

Listed:
  • Mauro J. Guerreiro Veloso

    (Graduate Program in Natural Resources Engineering, Institute of Technology, Federal University of Pará, Belém 66075-110, PA, Brazil)

  • Carlos H. P. dos Santos

    (Graduate Program in Mechanical Engineering, Institute of Technology, Federal University of Pará, Belém 66075-110, PA, Brazil)

  • Jerson R. P. Vaz

    (Graduate Program in Natural Resources Engineering, Institute of Technology, Federal University of Pará, Belém 66075-110, PA, Brazil)

  • Antonio M. Chaves Neto

    (Graduate Program in Natural Resources Engineering, Institute of Technology, Federal University of Pará, Belém 66075-110, PA, Brazil)

Abstract

It is well known that wind power generation addresses the energy needs of small and remote populations as one of the alternatives to petroleum-based energy’s greenhouse effect. Although there are several publications on rotor design and performance analysis, more should be written about the starting of wind turbines, mainly the small ones, where starting can be a big issue. The present paper evaluates the impact of the swept blade angle on the aerodynamic torque, thrust force, and minimal wind speed required to start the operation of a compact horizontal-axis wind turbine. It presents a novel investigation of the influence of swept rotor blades on the starting performance of a turbine drivetrain. The methodology uses the blade element moment theory coupled to Newton’s second law, in which Palmgren’s extended approach is employed. When the proposed methodology is compared to the experimental data available in the literature, it exhibits good agreement. However, when the wind turbine starts to run, the results show that swept blades do not always enhance the torque coefficient or reduce the thrust force as indicated in some scientific papers. For backward-swept blades, the maximum value decreases 4.0%. Similar behavior is found in thrust force for forward-swept blades. Therefore, more study is required to evaluate many blade foils in several operational environments to confirm this statement.

Suggested Citation

  • Mauro J. Guerreiro Veloso & Carlos H. P. dos Santos & Jerson R. P. Vaz & Antonio M. Chaves Neto, 2023. "Quasi-Steady Analysis of a Small Wind Rotor with Swept Blades," Sustainability, MDPI, vol. 15(13), pages 1-21, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:13:p:10211-:d:1180938
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    References listed on IDEAS

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    1. Moreira, Jouberson L.R. & Mesquita, Alexandre L.A. & Araujo, Leonam F. & Galhardo, Marcos A.B. & Vaz, Jerson R.P. & Pinho, João T., 2020. "Experimental investigation of drivetrain resistance applied to small wind turbines," Renewable Energy, Elsevier, vol. 153(C), pages 324-333.
    2. Caio Cesar Moreira Chagas & Marcio Giannini Pereira & Luiz Pinguelli Rosa & Neilton Fidelis da Silva & Marcos Aurélio Vasconcelos Freitas & Julian David Hunt, 2020. "From Megawatts to Kilowatts: A Review of Small Wind Turbine Applications, Lessons From The US to Brazil," Sustainability, MDPI, vol. 12(7), pages 1-25, April.
    3. Fábio Ricardo Procópio de Araújo & Marcio Giannini Pereira & Marcos Aurélio Vasconcelos Freitas & Neilton Fidelis da Silva & Eduardo Janser de Azevedo Dantas, 2021. "Bigger Is Not Always Better: Review of Small Wind in Brazil," Energies, MDPI, vol. 14(4), pages 1-26, February.
    4. Hércules Araújo Oliveira & José Gomes de Matos & Luiz Antonio de Souza Ribeiro & Osvaldo Ronald Saavedra & Jerson Rogério Pinheiro Vaz, 2023. "Assessment of Correction Methods Applied to BEMT for Predicting Performance of Horizontal-Axis Wind Turbines," Sustainability, MDPI, vol. 15(8), pages 1-26, April.
    5. Miriam L. A. Gemaque & Jerson R. P. Vaz & Osvaldo R. Saavedra, 2022. "Optimization of Hydrokinetic Swept Blades," Sustainability, MDPI, vol. 14(21), pages 1-13, October.
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