Backstepping Predictive Direct Power Control of Grid-Connected Photovoltaic System Considering Power Quality Issue
In this paper, a grid connected PV system acting as shunt active power filterfor power quality enhancementis presented. Further, a DC-DC boost converter is used to interface the photovoltaic generator with the grid, which provides a continuous power flow from the PV generator into the grid through a Voltage Source Inverter (VSI). Hence, a nonlinear backstepping control method withpredictive direct power control for the shunt active power filter side is presented, and a suitable backstepping DC-DC boost converter is also developed, with a view to reduce harmonic currents and insuring reactive power compensationunder nonlinear loads variations on the utility grid, and also extracts the maximum amount of power from the photovoltaic generator. Processorin the Loop (PIL) co-simulation results prove the performancesefficiency of the implemented control algorithms under a nonlinear load operating condition.
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