Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Consideration of tip speed limitations in preliminary analysis of minimum COe wind turbines
Year:2012
Research Areas
  • Mechanical aeronautics and naval engineering
Information
Abstract
A relation between Cost Of Energy, COE, maximum allowed tip speed, and rated wind speed, is obtained for wind turbines with a given goal rated power. The wind regime is characterized by the corresponding parameters of the probability density function of wind speed. The non-dimensional characteristics of the rotor: number of blades, the blade radial distributions of local solidity, twist angle, and airfoil type, play the role of parameters in the mentioned relation. The COE is estimated using a cost model commonly used by the designers. This cost model requires basic design data such as the rotor radius and the ratio between the hub height and the rotor radius. Certain design options, DO, related to the technology of the power plant, tower and blades are also required as inputs. The function obtained for the COE can be explored to find those values of rotor radius that give rise to minimum cost of energy for a given wind regime as the tip speed limitation changes. The analysis reveals that iso-COE lines evolve parallel to iso-radius lines for large values of limit tip speed but that this is not the case for small values of the tip speed limits. It is concluded that, as the tip speed limit decreases, the optimum decision for keeping minimum COE values can be: a) reducing the rotor radius for places with high Weibull scale parameter or b) increasing the rotor radius for places with low Weibull scale parameter.
International
Si
Congress
The science of making torque from wind
960
Place
Oldenburg (Alemania)
Reviewers
Si
ISBN/ISSN
Start Date
09/10/2012
End Date
11/10/2012
From page
1
To page
2
Proceedings
Participants
  • Autor: Alvaro Cuerva Tejero (UPM)
  • Autor: Oscar Lopez Garcia (UPM)
  • Autor: Cristobal Jose Gallego Castillo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Vehículos Aeroespaciales
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)