Innovative Grid-Connected Photovoltaic Systems Control Based on Complex-Vector-Filter

Nouha Mansouri, Sihem Nasri, Abderezak Lashab, Josep M. Guerrero () and Adnen Cherif
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Nouha Mansouri: Department of Electrical Engineering, National School of Engineering Monastir, Monastir 5035, Tunisia
Sihem Nasri: Department of Electronic Systems, Analysis and Treatment of Electrical/Energetic Systems Research Unit, Faculty of Sciences, Tunis 2092, Tunisia
Abderezak Lashab: Department of Energy Technology, Center for Research on Microgrids (CROM), Aalborg University, Pontoppidanstraede 111, DK-9220 Aalborg, Denmark
Josep M. Guerrero: Department of Energy Technology, Center for Research on Microgrids (CROM), Aalborg University, Pontoppidanstraede 111, DK-9220 Aalborg, Denmark
Adnen Cherif: Department of Electronic Systems, Analysis and Treatment of Electrical/Energetic Systems Research Unit, Faculty of Sciences, Tunis 2092, Tunisia

Energies, 2022, vol. 15, issue 18, 1-14

Abstract: The research presented in this paper explains how the complex-vector-filter (CVF) method can help in minimizing the current harmonic of a grid-tied photovoltaic system. In fact, the harmonic-free positive sequence (HFPS) load current is used to produce referential sinusoidal currents. This control stabilizes the grid’s currents under unbalanced load currents, as well as mitigates undesirable harmonic load currents, while feeding clean active power to the grid. Thanks to the proposed controller, the performance, such as robustness, as well as the stability and dynamics of the CVF are more effective compared to the proportional-integral (PI) with phase-locked-loop (PLL) controller. Moreover, the CVF ensures robustness and stability during the synchronization between the photovoltaic (PV) generator and the utility grid system. The PI&PLL control presents higher active and reactive power fluctuations during synchronization. On the other hand, the CVF ensures the elimination of the reactive power fluctuations during synchronization. The performance of the proposed CVF is validated by simulation through MATLAB software. Under all conditions, the grid current, considering harmonics, is within the limits set by the IEEE-519 power quality standard, where a total harmonic distortion (THD) of 1.56% was achieved in the case of feeding a non-linear load.

Keywords: photovoltaic (PV); voltage stability; grid-connected; complex-vector-filter; harmonic current (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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