A Robust Control of Two-Stage Grid-Tied PV Systems Employing Integral Sliding Mode Theory
Laboratory of Power Electronics and Industrial Control (LEPCI), Electronics Department, Faculty of Technology, University of Sétif1, Sétif 19000, Algeria
*
Author to whom correspondence should be addressed.
Energies 2018, 11(10), 2791; https://doi.org/10.3390/en11102791
Received: 26 August 2018
/
Revised: 1 October 2018
/
Accepted: 9 October 2018
/
Published: 17 October 2018
(This article belongs to the Section A: Electrical Engineering)
This contribution considers an improved control scheme for three-phase two-stage grid-tied photovoltaic (PV) power systems based on integral sliding mode control (ISMC) theory. The proposed control scheme consists of maximum power point tracking (MPPT), DC-Link voltage regulation and grid current synchronization. A modified voltage-oriented maximum power point tracking (VO-MPPT) method based on ISMC theory is proposed for design of an enhanced MPPT under irradiation changes. Moreover, a novel DC-Link voltage controller based on ISMC theory is proposed to achieve good regulation of DC-Link voltage over its reference. To inject the generated PV power into the grid with high quality, a voltage-oriented control based on space vector modulation (SVM) and ISMC (VOC-ISMC-SVM) has been developed to control the grid current synchronization. Numerical simulations are performed in a MATLAB/SimulinkTM (R2009b, MathWorks, Natick, MA, USA) environment to evaluate the proposed control strategy. In comparison with conventional control schemes, the developed control strategy provides an accurate maximum power point (MPP) tracking with less power oscillation as well as a fast and an accurate DC-Link regulation under varying irradiation conditions. Moreover, the transfer of the extracted power into the grid is achieved with high quality.
View Full-Text
Keywords:
grid-tied photovoltaic system; maximum power point tracking (MPPT); voltage-oriented control (VOC); integral sliding mode control (ISMC)theory; DC-Link control
▼
Show Figures
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
MDPI and ACS Style
Kihal, A.; Krim, F.; Talbi, B.; Laib, A.; Sahli, A. A Robust Control of Two-Stage Grid-Tied PV Systems Employing Integral Sliding Mode Theory. Energies 2018, 11, 2791. https://doi.org/10.3390/en11102791
AMA Style
Kihal A, Krim F, Talbi B, Laib A, Sahli A. A Robust Control of Two-Stage Grid-Tied PV Systems Employing Integral Sliding Mode Theory. Energies. 2018; 11(10):2791. https://doi.org/10.3390/en11102791
Chicago/Turabian StyleKihal, Abbes, Fateh Krim, Billel Talbi, Abdelbaset Laib, and Abdeslem Sahli. 2018. "A Robust Control of Two-Stage Grid-Tied PV Systems Employing Integral Sliding Mode Theory" Energies 11, no. 10: 2791. https://doi.org/10.3390/en11102791
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
