Direct power control of a grid connected photovoltaic system, associated with an active power filter
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Abstract
In this study, we present a new control method entitled direct power control without voltage sensors of a grid connected photovoltaic system associated with an active power filter. The direct control of power (DPC) is employed for the calculation of reference current generation. In this technique the switches states of inverter are selected from a table of switching based on the immediate errors between the active and reactive powers and their reference values. The objective of this paper is the reduction of Total Harmonic Distortion (THD) of source current, compensate reactive power and inject the maximum active power available from the PV array into the load and/or grid. Matlab/Simulink simulations are provided to demonstrate the performance of the proposed approach.
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