PhD student, Eng. Adriana BURLIBASA (SCARLAT), Prof. PhD, Eng. Emil CEANGA
Rezumat
Lucrarea prezinta modelarea fluctuatiilor vitezei vantului intr-un punct de pe pala unei turbine eoliene de mare
putere, in scopul analizei dinamicii sistemului eolian si a structurilor de control asociate. Procedura propusa include doua
etape: 1) obtinerea spectrului rotational de esantionare al turbulentei intr-o reprezentare neparametica, utilizand tehnicile
corelationale si 2) parametrizarea modelului neparametric al spectrului rotational de esantionare printr-un filtru de formare multirezonant, care genereaza turbulenta ca o serie de timp. Pe aceste baze, sunt prezentate rezultatele numerice privind
simularea numerica a fluctuatiilor vitezei vantului intr-un punct de pe pala unei turbine eoliene de mare putere (2MW).
Cuvinte cheie: turbina eolianaturbulenta vitezei vantuluidensitate spectrala de puterespectru rotational de esantionare
Abstract
This paper deals with an approach for wind speed fluctuations modeling on the rotating blade of a large wind
turbine, in order to achieve the numerical analysis of the wind system performances. The proposed approach has two steps:
1) obtaining the rotationally sampled spectrum of the wind speed turbulence as a non parametric representation, using the cross correlation technique and 2) parameterization of the non parametric spectrum through a multi-resonant shaping filter, which generates the turbulence component of the wind speed as a time series. Some simulation results of the
rotationally sampled wind speed fluctuations for a large wind turbine (2MW) are also presented in the paper
Keywords: wind turbinewind speed turbulencepower spectral densityrotationally sampled spectrum
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