Power Quality Enhancement in Hybrid Photovoltaic-Battery System based on three–Level Inverter associated with DC bus Voltage Control

Belkacem Belabbas, Tayeb Allaoui, Mohamed Tadjine, Mouloud Denai


This modest paper presents a study on the energy quality produced by a hybrid system consisting of a Photovoltaic (PV)
power source connected to a battery. A three-level inverter was used in the system studied for the purpose of improving
the quality of energy injected into the grid and decreasing the Total Harmonic Distortion (THD). A Maximum Power Point
Tracking (MPPT) algorithm based on a Fuzzy Logic Controller (FLC) is used for the purpose of ensuring optimal production
of photovoltaic energy. In addition, another FLC controller is used to ensure DC bus stabilization. The considered system
was implemented in the Matlab /Simpower environment. The results show the effectiveness of the proposed inverter at three
levels in improving the quality of energy injected from the system into the grid.

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