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Wind energy potential in Iberia is assessed for recent–past (1961–2000) and future (2041–2070) climates. For recent–past, a COSMO-CLM simulation driven by ERA-40 is used. COSMO-CLM simulations driven by ECHAM5 following the A1B scenario are used for future projections. A 2 MW rated...
Persistent link: https://www.econbiz.de/10011116495
The extensive deployment of megawatt-scale wind turbines is bringing more challenges to the safety and stability of electric grid than ever before. This is not only because of the unstable wind over time but the increased risk of power quality pollution by defective wind turbines particularly...
Persistent link: https://www.econbiz.de/10011116551
Structural Health Monitoring (SHM) is commonly used in the health assessment of wind turbines. The system is installed during construction of the structure and consists of wired sensors connected to a central data acquisition unit via cables. In most cases, the data acquisition unit is located...
Persistent link: https://www.econbiz.de/10011116574
Today a lot of Arctic remote communities rely on electrical energy produced by diesel generators. This type of energy is very expensive as apart from high fuel prices, the transportation costs to the remote location, also need to be added. The goal of this study is to evaluate an application of...
Persistent link: https://www.econbiz.de/10011189890
To enable further growth of wind turbine dimensions and rated power, it is essential to decrease structural loads that wind turbines experience. Therefore a great portion of research is focused on control algorithms for reduction of wind turbine structural loads, but typically wind turbine rotor...
Persistent link: https://www.econbiz.de/10011189905
Vortex generators (VGs) are commonly-used effective flow separation control devices, and are proved to have potential to improve the aerodynamic performance of large wind turbines. In this paper, the flow physics of VGs and how their size affects the aerodynamic performance of a blunt...
Persistent link: https://www.econbiz.de/10011189923
This paper presents a numerical study on the parametric effect of deformable trailing edge flap (DTEF) on the fatigue load of a large-scale wind turbine blade. Investigations were conducted within the operation regions II and III of the turbine, respectively. Results showed that, compared with...
Persistent link: https://www.econbiz.de/10011189947
The purpose of this study was to develop an improved actuator surface model for wind turbine analyses. A new actuator surface model based on the lifting line theory has been suggested to eliminate the unexpected induced velocity due to the circulation, as well as to estimate the span-wise and...
Persistent link: https://www.econbiz.de/10011189976
This paper provides a comprehensive literature review on the estimation of effective wind Speed (EEWS), and EEWS based control techniques applied to wind turbine (WT). Several numbers of good publications have reported the EEWS based control of wind turbine. Wind speed is a driving force for the...
Persistent link: https://www.econbiz.de/10011190337
Many advances have been made during the last decade in the development and application of computational fluid dynamics (CFD), finite element analysis (FEA), numerical weather modeling, and other numerical methods as applied to the wind energy industry. The current information about this area of...
Persistent link: https://www.econbiz.de/10011190430