Aerodynamic Performance Analysis of a Large Scale Wind Turbine Blade under Variable Condition

Abstract:

Based on BLADED software, the aerodynamic performance of a large scale wind turbine blade was analyzed under variable condition. The results show that the rated power of the blade under variable condition is increased 10%, when the rated wind speed is changed from 10.5m/s to 11.0 m/s. The blade’s wind power coefficient is above 0.46, and its tip speed ratio is between 7.8 and 11.4. When its tip speed ratio is 9.5, the blade’s maximum wind power coefficient is 0.486. It is indicated that the blade has good aerodynamic performance and wide scope of wind speed adaptive capacity. The blade root’s equivalent fatigue load is 2.11 MN•m, and its extreme flapwise load is 4.61 MN•m. The loads under variable condition are both less than that of the designed condition, so the blade’s application under variable condition is safe.

• Periodical: Applied Mechanics and Materials (Volumes 291-294)
• Pages: 527-530
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.291-294.527
• Online since: February 2013
• Authors: Peng Zhan Zhou, Fang Sheng Tan
• Keywords: Aerodynamic Performance, BLADED Software, Variable Condition, Wind Turbine Blade

References

[1] G.M.J. Herbert, S. Iniyan, E. Sreevalsan, et al: Renewable & Sustainable Energy Reviews, Vol. 11(2007), pp.1117-1145.

DOI: 10.1016/j.rser.2005.08.004

[2] L. Lu, H.X. Yang, J. Burnett: Renewable Energy, Vol. 27(2002), pp.1-12.

[3] M.O.L. Hansen, J.N. Sorensen, S. Voutsinas, et al: Progress in Aerospace Sciences, Vol. 42(2006), pp.285-330.

[4] E.A. Bossanyi: GH bladed theory manual（Garrad Hassan and Partners Limited Publications, Bristol 2007）.

[5] GL Wind 2003. Guideline for the certification of wind turbines.