Annual energy production for 2 bladed versus 3 bladed wind turbine
Sepideh Kianabkht , Kathryn E. Johnson, Dana Martin
• [1] Steele, Adam, et al. "Aerodynamics of an Ultra light Load-Aligned Rotor for Extreme-Scale Wind Turbines." AIAA 914 (2013): 2013.
• [2] http://www.windustry.org/how_much_do_wind_turbines_cost
• [3] http://www.awea.org/falling-wind-energy-costs#ComparativeCost
• [4] Carrillo, Camilo, et al. "An approach to determine the Weibull parameters for wind energy analysis: the case of Galicia (Spain)." Energies 7.4 (2014): 2676-2700.
NREL
•
From the figure (7) it can be seen that the value of the AEP increased by
the C and decrease by the K
• To determine the potential benefits of designing a two bladed turbine, annual energy production was used to compare two bladed and three bladed
The AEP calculate from the following equation:
𝐸 =
𝑝𝐶𝑝,𝑒𝑞 2𝑣
𝑐𝑖 3𝑒
−𝑣𝑐𝑖 3 𝑐𝑘− 𝑣
𝑟3𝑒
− 𝑣𝑐𝑖3 𝑐𝑘+
3𝛤 3 𝑘 𝑘 𝐶3𝛾
𝑣𝑟𝑘 𝑐𝑘,
3 𝑘− 𝛾
𝑣𝑐𝑖𝑘 𝑐𝑘,
3 𝑘• The scale and shape parameter are two factors for determining the energy production witch from the equation (1) can be computed.
• For this specific turbine different c and k in the simulation for the power output in the steady state has been run to see how these factors change the AEP
Context & Background
Introduction
Results
Conclusions
References
• From figure (3) and computing the mean power for wind speed 13 and 19, It can be seen that produced power for 2 bladed wind turbine is slightly better than 3 bladed
• This work has been partially supported by ARPA-E under award number DE-AR0000667. Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the authors and do not necessarily reflect the views of ARPA-E.
• Special thanks to SUMR team for providing related data and design.
Acknowledgments
• Wind energy is one of the most affordable source of electricity nowadays.
• To compete with other sources of energy, it is so essential to reduce the cost of energy as much as possible.
• 𝐂𝐎𝐄 = $
𝐸𝑛𝑒𝑟𝑔𝑦
• “The cost of the wind turbine is the single largest cost component, and can make up 70% or more of the entire cost of a land-based wind project.” [3]
Using 2 bladed wind turbine instead of 3 bladed Figure (5) Figure (6) Figure (7) Figure (8) Figure (2)
