A space-vector discrete Fourier transform for unbalanced and distorted three-phase signals / Neves, Francisco A. S. in IEEE transactions on industrial electronics, Vol. 57 N° 8 (Août 2010)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2858 - 2867 Titre : A space-vector discrete Fourier transform for unbalanced and distorted three-phase signals Type de document : texte imprimé Auteurs : Neves, Francisco A. S., Auteur ; de Souza, Helber E. P., Auteur ; Bradaschia, Fabricio, Auteur Année de publication : 2011 Article en page(s) : pp. 2858 - 2867 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Active filters Amplitude and phase estimation Discrete Fourier transforms (DFTs) Industrial power system harmonics Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a space-vector discrete-time Fourier transform is proposed for fast and precise detection of the fundamental-frequency and harmonic positive- and negative-sequence vector components of three-phase input signals. The discrete Fourier transform is applied to the three-phase signals represented by Clarke's αβ vector. It is shown that the complex numbers output from the Fourier transform are the instantaneous values of the positive- and negative-sequence harmonic component vectors of the input three-phase signals. The method allows the computation of any desired positive- or negative-sequence fundamental-frequency or harmonic vector component of the input signal. A recursive algorithm for low-effort online implementation is also presented. The detection performance for variable-frequency and interharmonic input signals is discussed. The proposed and other usual method performances are compared through simulations and experiments. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340691 [article] A space-vector discrete Fourier transform for unbalanced and distorted three-phase signals [texte imprimé] / Neves, Francisco A. S., Auteur ; de Souza, Helber E. P., Auteur ; Bradaschia, Fabricio, Auteur . - 2011 . - pp. 2858 - 2867. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 8 (Août 2010) . - pp. 2858 - 2867 Mots-clés : Active filters Amplitude and phase estimation Discrete Fourier transforms (DFTs) Industrial power system harmonics Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : In this paper, a space-vector discrete-time Fourier transform is proposed for fast and precise detection of the fundamental-frequency and harmonic positive- and negative-sequence vector components of three-phase input signals. The discrete Fourier transform is applied to the three-phase signals represented by Clarke's αβ vector. It is shown that the complex numbers output from the Fourier transform are the instantaneous values of the positive- and negative-sequence harmonic component vectors of the input three-phase signals. The method allows the computation of any desired positive- or negative-sequence fundamental-frequency or harmonic vector component of the input signal. A recursive algorithm for low-effort online implementation is also presented. The detection performance for variable-frequency and interharmonic input signals is discussed. The proposed and other usual method performances are compared through simulations and experiments. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340691

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