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Evaluation of the MPPT performance in small wind turbines by estimating the tip-speed ratio

Louis Gevaert (UGent) , Jeroen De Kooning (UGent) , Tine Vandoorn (UGent) , Jan Van de Vyver (UGent) and Lieven Vandevelde (UGent)
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Abstract
In this paper, a method for online estimation of the tip speed ratio (TSR) of small wind turbines is presented, in order to evaluate the MPPT performance. Unlike obvious methods, for which an encoder or resolver is needed, the presented method only requires measurements of the wind speed and the generator current. Firstly, the accuracy of the presented method is evaluated by using a wind turbine emulator. The obtained results show that the method is suitable for accurately determining both the shaft speed and the TSR of a small wind turbine. This method of estimating the TSR is promising given its simplicity and applicability in the full range of synchronous generators. In addition, by comparing the estimated TSR with the optimum TSR, the MPPT performance can be evaluated. Secondly, the TSR of a commercially available small wind turbine is measured by using the presented method and the MPPT performance is evaluated. In conclusion, the MPPT of the tested turbine can be improved, allowing a considerable increase in the yearly energy output.
Keywords
Maximum power point tracking, Tip speed ratio, Small wind turbines, Wind energy, SYSTEM, ALGORITHM, Shaft speed estimation, Power coefficient

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Citation

Please use this url to cite or link to this publication:

Chicago
Gevaert, Louis, Jeroen De Kooning, Tine Vandoorn, Jan Van de Vyver, and Lieven Vandevelde. 2013. “Evaluation of the MPPT Performance in Small Wind Turbines by Estimating the Tip-speed Ratio.” In 2013 48TH INTERNATIONAL UNIVERSITIES’ POWER ENGINEERING CONFERENCE (UPEC). IEEE.
APA
Gevaert, L., De Kooning, J., Vandoorn, T., Van de Vyver, J., & Vandevelde, L. (2013). Evaluation of the MPPT performance in small wind turbines by estimating the tip-speed ratio. 2013 48TH INTERNATIONAL UNIVERSITIES’ POWER ENGINEERING CONFERENCE (UPEC). Presented at the 48th International Universities’ Power Engineering Conference (UPEC - 2013), IEEE.
Vancouver
1.
Gevaert L, De Kooning J, Vandoorn T, Van de Vyver J, Vandevelde L. Evaluation of the MPPT performance in small wind turbines by estimating the tip-speed ratio. 2013 48TH INTERNATIONAL UNIVERSITIES’ POWER ENGINEERING CONFERENCE (UPEC). IEEE; 2013.
MLA
Gevaert, Louis, Jeroen De Kooning, Tine Vandoorn, et al. “Evaluation of the MPPT Performance in Small Wind Turbines by Estimating the Tip-speed Ratio.” 2013 48TH INTERNATIONAL UNIVERSITIES’ POWER ENGINEERING CONFERENCE (UPEC). IEEE, 2013. Print.
@inproceedings{4172329,
  abstract     = {In this paper, a method for online estimation of the tip speed ratio (TSR) of small wind turbines is presented, in order to evaluate the MPPT performance. Unlike obvious methods, for which an encoder or resolver is needed, the presented method only requires measurements of the wind speed and the generator current. Firstly, the accuracy of the presented method is evaluated by using a wind turbine emulator. The obtained results show that the method is suitable for accurately determining both the shaft speed and the TSR of a small wind turbine. This method of estimating the TSR is promising given its simplicity and applicability in the full range of synchronous generators. In addition, by comparing the estimated TSR with the optimum TSR, the MPPT performance can be evaluated. Secondly, the TSR of a commercially available small wind turbine is measured by using the presented method and the MPPT performance is evaluated. In conclusion, the MPPT of the tested turbine can be improved, allowing a considerable increase in the yearly energy output.},
  author       = {Gevaert, Louis and De Kooning, Jeroen and Vandoorn, Tine and Van de Vyver, Jan and Vandevelde, Lieven},
  booktitle    = {2013 48TH INTERNATIONAL UNIVERSITIES' POWER ENGINEERING CONFERENCE (UPEC)},
  isbn         = {9781479932542},
  language     = {eng},
  location     = {Dublin, Ireland},
  pages        = {5},
  publisher    = {IEEE},
  title        = {Evaluation of the MPPT performance in small wind turbines by estimating the tip-speed ratio},
  year         = {2013},
}

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