 Wind turbulence used as searching signal for MPPT in variable-speed wind energy conversion systemsIulian Munteanu, Antoneta Iuliana Bratcu and Emil Ceangǎ Renewable Energy, 2009, vol. 34, issue 1, 322-327 Abstract: The control problem associated to a class of horizontal-axis fixed-pitch variable-speed low-power wind energy conversion systems, working in the partial load region, consisting in the energy conversion maximization, is approached here under the assumption that the wind turbine model and its parameters are poorly known. Using a new approach derived from the optimum seeking methods category, generically called Maximum Power Point Tracking (MPPT), the proposed control solution aims at driving the average position of the operating point near to optimality. Instead of inducing sinusoidal search signals, the wind turbulence is here used as search disturbance. The high-speed shaft's average rotational speed is slowly adjusted using the Fast Fourier Transform processing of some available measures from the system as an estimate of the operating point's position/distance to optimality. Numerical simulations are used for preliminary checking the control law based on this estimation. Keywords: Wind energy conversion systems; Energy optimization; Extremum seeking control; Maximum Power Point Tracking; Fast Fourier Transform (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:34:y:2009:i:1:p:322-327 DOI: 10.1016/j.renene.2008.03.001 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
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