Direct Components Extraction of Voltage in Photovoltaic Active Filter Connected in a Perturbed Electrical Network (Based On Robust PLL Algorithm)

The quality and performances of the compensation of harmonic currents depends strongly on the performances of the identification blocks of control side of the photovoltaic generators used as active filters. Then, the use of harmonics identification methods is not valid because the network voltage mu...

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Bibliographic Details
Published in:Energy procedia 2015-01, Vol.74, p.966-972
Main Authors: Ahmed, Tadjer Sid, Idir, Habi, Mohamed, El Ganaoui, Scipioni, Angel
Format: Article
Language:English
Subjects:
Active powr filters
Electric power
Engineering Sciences
Multivariable filter
Phase-locked loop
Photovoltaic system
Power quality
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Summary:The quality and performances of the compensation of harmonic currents depends strongly on the performances of the identification blocks of control side of the photovoltaic generators used as active filters. Then, the use of harmonics identification methods is not valid because the network voltage must be sinusoidal and balanced, which is not the case in practice. Hence, to make the application of the identification methods of harmonic currents versatile and for any voltage form, we use the detection system of the fundamental component of the direct voltage. In this paper, a comparison between the conventional method used for extracting the direct component of the network voltage which is based on the phase-locked loop (PLL) and the new approach based on a multivariable extraction filter. Finally, simulation results show that the proposed multivariable filter may better work even if the network voltage is (perturbed and unbalanced). Furthermore, this filters permits to generalize the use of identification methods for filtering the different perturbations of active and reactive current.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2015.07.731