Journal cover Journal topic
Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
Journal topic
Discussion papers
https://doi.org/10.5194/wes-2018-61
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-2018-61
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Brief communications 28 Sep 2018

Brief communications | 28 Sep 2018

Review status
This discussion paper is a preprint. A revision of the manuscript is under review for the journal Wind Energy Science (WES).

Wind inflow observation from load harmonics: wind tunnel validation of the rotationally symmetric formulation

Marta Bertelè1, Carlo L. Bottasso1, and Stefano Cacciola2 Marta Bertelè et al.
  • 1Wind Energy Institute, Technische Universität München, Garching bei München, 85748, Germany
  • 2Dipartimento di Scienze e Tecnologie Aerospaziali, Politecnico di Milano, Milano, 20156, Italy

Abstract. The present paper further develops and experimentally validates the previously published idea of estimating the wind inflow at a turbine rotor disk from the machine response. A linear model is formulated that relates one per revolution (1P) harmonics of the in- and out-of-plane blade root bending moments to four wind parameters, representing vertical and horizontal shears and misalignment angles. Improving on this concept, the present work exploits the rotationally symmetric behaviour of the rotor in the formulation of the load-wind model. In a nutshell, this means that the effects on the loads of the vertical shear and misalignment are the same as those of the horizontal quantities, simply shifted by π/2. This results in a simpler identification of the model, which needs a reduced set of observations. The performance of the proposed method is first tested in a simulation environment and then validated with an experimental data set obtained with an aeroelastically scaled turbine model in a boundary layer wind tunnel.

Marta Bertelè et al.
Interactive discussion
Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Marta Bertelè et al.
Marta Bertelè et al.
Viewed  
Total article views: 238 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
177 56 5 238 5 4
  • HTML: 177
  • PDF: 56
  • XML: 5
  • Total: 238
  • BibTeX: 5
  • EndNote: 4
Views and downloads (calculated since 28 Sep 2018)
Cumulative views and downloads (calculated since 28 Sep 2018)
Viewed (geographical distribution)  
Total article views: 236 (including HTML, PDF, and XML) Thereof 236 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 14 Dec 2018
Publications Copernicus
Download
Short summary
This paper describes a new formulation for estimating the wind inflow at the rotor disk, based on measurements of the blade loads. The new method improves on previous formulations, by exploiting the rotational symmetry of the problem. Experimental results obtained with an aeroelastically scaled model in a boundary layer wind tunnel are used for validating the proposed approach.
This paper describes a new formulation for estimating the wind inflow at the rotor disk, based...
Citation
Share