Synchronization Algorithms for Grid-connected Photovoltaic Systems under Grid Disturbances
A.Satif1, L. Hlou2, M. Mekhfioui3, H. Dahou4, R. Elgouri5
1A. Satif*, Laboratory of Electrical Engineering and Telecommunications Systems, National School of Applied Sciences (ENSA), Kenitra, Morocco.
2L. Hlou, Laboratory of Electrical Engineering & Energy Systems, Faculty of Science Ibn Tofail University, Kenitra, Morocco.
3M. Mekhfioui, Laboratory of Electrical Engineering & Energy Systems, Faculty of Science Ibn Tofail University, Kenitra, Morocco.
4H. Dahou, Laboratory of Electrical Engineering & Energy Systems, Faculty of Science Ibn Tofail University, Kenitra, Morocco.
5R. Elgouri, Laboratory of Electrical Engineering and Telecommunications Systems, National School of Applied Sciences (ENSA), Kenitra, Morocco.
Manuscript received on December 17, 2019. | Revised Manuscript received on December 25, 2019. | Manuscript published on January 10, 2020. | PP: 705-710 | Volume-9 Issue-3, January 2020. | Retrieval Number: A4760119119/2020©BEIESP | DOI: 10.35940/ijitee.A4760.019320
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The increasing employment of the photovoltaic solar energy demands suitable control techniques in order to ensure a stable and proper connection to the utility grid, especially when disturbances occur, for this reason, the Phase Locked Loop (PLL) technique is used. In this paper, the most commonly synchronization algorithms in grid-connected photovoltaic systems will be presented. The algorithms structures are described and analyzed in detail. The selected algorithms are developed in C-Code and simulated in MATLAB software from MathWorks. The behaviors of the methods are presented and explained under grid voltages disturbances (frequency variation, harmonics presence, voltage unbalances, etc.). The obtained results indicate that each of the tested PLLs has its own advantages and disadvantages, depending on the disturbances occurred into the three-phase utility grid.
Keywords: Tree-phase Utility Grid, Grid Synchronization, Phase locked loop
Scope of the Article: Algorithm Engineering