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Robust aerodynamic design of variable speed wind turbine rotors

Minisci, Edmondo and Campobasso, Michele Sergio and Vasile, Massimiliano (2012) Robust aerodynamic design of variable speed wind turbine rotors. In: ASME Turbo Expo 2012 Technical Conference, 2012-06-11 - 2012-06-15, Copenhagen.

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Abstract

This study focuses on the robust aerodynamic design of the bladed rotor of small horizontal axis wind turbines. The optimization process also considers the effects of manufacturing and assembly tolerances on the yearly energy production. The aerodynamic performance of the rotors so designed has reduced sensitivity to manufacturing and assembly errors. The geometric uncertainty affecting the rotor shape is represented by normal distributions of the pitch angle of the blades, and the twist angle and chord of their airfoils. The aerodynamic module is a blade element momentum theory code. Both Monte Carlo-based and the Univariate ReducedQuadrature technique, a novel deterministic uncertainty propagationmethod, are used. The performance of the two approaches is assessed both interms of accuracy and computational speed. The adopted optimization method is based on a hybrid multi-objective evolutionary strategy. The presented results highlight that the sensitivity of the yearly production to geometric uncertainties can be reduced by reducing the rotational speed and increasing the aerodynamic blade loads.

Item type: Conference or Workshop Item (Paper)
ID code: 41392
Keywords: aerodynamic design , wind turbines, Mechanical engineering and machinery, Motor vehicles. Aeronautics. Astronautics, Mechanical Engineering, Aerospace Engineering, Computational Mechanics, Computer Graphics and Computer-Aided Design, Control and Systems Engineering
Subjects: Technology > Mechanical engineering and machinery
Technology > Motor vehicles. Aeronautics. Astronautics
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Technology and Innovation Centre > Advanced Engineering and Manufacturing
Depositing user: Pure Administrator
Date Deposited: 11 Oct 2012 14:59
Last modified: 24 Jul 2015 12:58
Related URLs:
URI: http://strathprints.strath.ac.uk/id/eprint/41392

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