Practical Implementation of the Backstepping Sliding Mode Controller MPPT for a PV-Storage Application

Marwen Bjaoui, Brahim Khiari, Ridha Benadli, Mouad Memni and Anis Sellami
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Marwen Bjaoui: LANSER Laboratory/CRTEn B.P.95 Hammam-Lif, Tunis 2050, Tunisia
Brahim Khiari: LANSER Laboratory/CRTEn B.P.95 Hammam-Lif, Tunis 2050, Tunisia
Ridha Benadli: LANSER Laboratory/CRTEn B.P.95 Hammam-Lif, Tunis 2050, Tunisia
Mouad Memni: LANSER Laboratory/CRTEn B.P.95 Hammam-Lif, Tunis 2050, Tunisia
Anis Sellami: Research unit: LISIER, National Higher Engineering School of Tunis, Tunis 2050, Tunisia

Energies, 2019, vol. 12, issue 18, 1-22

Abstract: This study presents a design and an implementation of a robust Maximum Power Point Tracking (MPPT) for a stand-alone photovoltaic (PV) system with battery storage. A new control scheme is applied for the boost converter based on the combination of the adaptive perturb and observe fuzzy logic controller (P&O-FLC) MPPT technique and the backstepping sliding mode control (BS-SMC) approach. The MPPT controller design was used to accurately track the PV operating point to its maximum power point (MPP) under changing climatic conditions. The presented MPPT based on the P&O-FLC technique generates the reference PV voltage and then a cascade control loop type, based on the BS-SMC approach is used. The aims of this approach are applied to regulate the inductor current and then the PV voltage to its reference values. In order to reduce system costs and complexity, a high gain observer (HGO) was designed, based on the model of the PV system, to estimate online the real value of the boost converter’s inductor current. The performance and the robustness of the BS-SMC approach are evaluated using a comparative simulation with a conventional proportional integral (PI) controller implemented in the MATLAB/Simulink environment. The obtained results demonstrate that the proposed approach not only provides a near-perfect tracking performance (dynamic response, overshoot, steady-state error), but also offers greater robustness and stability than the conventional PI controller. Experimental results fitted with dSPACE software reveal that the PV module could reach the MPP and achieve the performance and robustness of the designed BS-SMC MPPT controller.

Keywords: photovoltaic system; maximum power point tracking; backstepping sliding mode control; high gain observer; stability analysis (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: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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