Aerodynamic design optimization of wind turbine rotors under geometric uncertainty

M. Sergio Campobasso, Edmondo Minisci, Marco Caboni

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Presented is a robust optimization strategy for the aerodynamic design of horizontal axis wind turbine rotors including the variability of the annual energy production due to the uncertainty of the blade geometry caused by manufacturing and assembly errors. The energy production of a rotor designed with the proposed robust optimization approach features lower sensitivity to stochastic geometry errors with respect to that of a rotor designed with the conventional deterministic optimization approach that ignores these errors. The geometry uncertainty is represented by normal distributions of the blade pitch angle, and the twist angle and chord of the airfoils. The aerodynamic module is a blade-element momentum theory code. Both Monte Carlo sampling and the univariate reduced quadrature technique, a novel deterministic uncertainty analysis method, are used for uncertainty propagation. The performance of the two approaches is assessed in terms of accuracy and computational speed. A two-stage multi-objective evolutionbased optimization strategy is used. Results highlight that, for the considered turbine type, the sensitivity of the annual energy production to rotor geometry errors can be reduced by reducing the rotational speed and increasing the blade loading. The primary objective of the paper is to highlight how to incorporate an efficient and accurate uncertainty propagation strategy in wind turbine design. The formulation of the considered design problem does not include all the engineering constraints adopted in real turbine design, but the proposed probabilistic design strategy is fairly independent of the problem definition and can be easily extended to turbine design systems of any complexity.
LanguageEnglish
Pages51-65
Number of pages15
JournalWind Energy
Volume19
Issue number1
Early online date14 Nov 2014
DOIs
Publication statusPublished - 1 Jan 2016

Fingerprint

Aerodynamic Design
Wind Turbine
Blade
Wind turbines
Rotor
Aerodynamics
Turbine
Rotors
Uncertainty Propagation
Uncertainty
Robust Optimization
Annual
Turbines
Geometry
Energy
Stochastic Geometry
Angle
Uncertainty Analysis
Monte Carlo Sampling
Airfoil

Keywords

  • wind turbine rotor design
  • stochastic geometry errors
  • manufacturing tolerances
  • probablistic design optimization

Cite this

Campobasso, M. Sergio ; Minisci, Edmondo ; Caboni, Marco. / Aerodynamic design optimization of wind turbine rotors under geometric uncertainty. In: Wind Energy. 2016 ; Vol. 19, No. 1. pp. 51-65.
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Aerodynamic design optimization of wind turbine rotors under geometric uncertainty. / Campobasso, M. Sergio; Minisci, Edmondo; Caboni, Marco.

In: Wind Energy, Vol. 19, No. 1, 01.01.2016, p. 51-65.

Research output: Contribution to journalArticle

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