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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
    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
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    Depositing user: Pure Administrator
    Date Deposited: 11 Oct 2012 15:59
    Last modified: 13 Jun 2013 11:39
    URI: http://strathprints.strath.ac.uk/id/eprint/41392

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