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Online estimation of the power coefficient versus tip-speed ratio curve of wind turbines

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Abstract
Wind turbines are one of the main sources of renewable energy worldwide. Although large wind turbines in the MW range are popular, small wind turbines of several kW can also have a valuable contribution since they can be installed in a more decentralized manner. However, the energy yield of these small wind turbines still needs improvement. The performance of the Maximum Power Point Tracker (MPPT) has a crucial impact on the energy yield. In order to design and set-up the MPPT, knowledge of the Cp curve of the turbine blades has an important added value. However, this curve is often not known as it requires a sufficiently large wind tunnel or complex computational fluid dynamics calculations. In this paper, an alternative method is presented to estimate the Cp curve by measuring the wind speed, generator voltage and current. This method can be applied on any turbine, small or large, during normal operation and does not require an intervention in the turbine itself, e.g., for placement of additional sensors. The Cp estimation method is implemented on a lab-scale wind turbine emulator to obtain experimental validation.
Keywords
Wind energy, Maximum power point tracking, Power coefficient, Tip-speed ratio, GENERATION, TRACKING, SYSTEMS, POINT

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Chicago
De Kooning, Jeroen, Louis Gevaert, Jan Van de Vyver, Tine Vandoorn, and Lieven Vandevelde. 2013. “Online Estimation of the Power Coefficient Versus Tip-speed Ratio Curve of Wind Turbines.” In 39th Annual Conference of the IEEE Industrial Electronics Society (IECON 2013), 1792–1797. IEEE.
APA
De Kooning, Jeroen, Gevaert, L., Van de Vyver, J., Vandoorn, T., & Vandevelde, L. (2013). Online estimation of the power coefficient versus tip-speed ratio curve of wind turbines. 39th Annual Conference of the IEEE Industrial Electronics Society (IECON 2013) (pp. 1792–1797). Presented at the 39th Annual Conference of the IEEE Industrial-Electronics-Society (IECON), IEEE.
Vancouver
1.
De Kooning J, Gevaert L, Van de Vyver J, Vandoorn T, Vandevelde L. Online estimation of the power coefficient versus tip-speed ratio curve of wind turbines. 39th Annual Conference of the IEEE Industrial Electronics Society (IECON 2013). IEEE; 2013. p. 1792–7.
MLA
De Kooning, Jeroen, Louis Gevaert, Jan Van de Vyver, et al. “Online Estimation of the Power Coefficient Versus Tip-speed Ratio Curve of Wind Turbines.” 39th Annual Conference of the IEEE Industrial Electronics Society (IECON 2013). IEEE, 2013. 1792–1797. Print.
@inproceedings{3262838,
  abstract     = {Wind turbines are one of the main sources of renewable energy worldwide. Although large wind turbines in the MW range are popular, small wind turbines of several kW can also have a valuable contribution since they can be installed in a more decentralized manner. However, the energy yield of these small wind turbines still needs improvement. The performance of the Maximum Power Point Tracker (MPPT) has a crucial impact on the energy yield. In order to design and set-up the MPPT, knowledge of the Cp curve of the turbine blades has an important added value. However, this curve is often not known as it requires a sufficiently large wind tunnel or complex computational fluid dynamics calculations. In this paper, an alternative method is presented to estimate the Cp curve by measuring the wind speed, generator voltage and current. This method can be applied on any turbine, small or large, during normal operation and does not require an intervention in the turbine itself, e.g., for placement of additional sensors. The Cp estimation method is implemented on a lab-scale wind turbine emulator to obtain experimental validation.},
  author       = {De Kooning, Jeroen and Gevaert, Louis and Van de Vyver, Jan and Vandoorn, Tine and Vandevelde, Lieven},
  booktitle    = {39th Annual Conference of the IEEE Industrial Electronics Society (IECON 2013)},
  isbn         = {9781479902248},
  issn         = {1553-572X},
  language     = {eng},
  location     = {Vienna, Austria},
  pages        = {1792--1797},
  publisher    = {IEEE},
  title        = {Online estimation of the power coefficient versus tip-speed ratio curve of wind turbines},
  year         = {2013},
}

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