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In this article we present the classification and the nature of the inverter used in PV system. Moreover, the inverter control techniques such as hysteresis, plain wave and PWM control. And also, we examine coupling simulation results of a photovoltaic source on the power grid via a 2-level DC-AC converter with NPC structure. To improve the control performance of the electric power injected, three control techniques are used such as: Control by analog PI, Control by Lyapunov theory and Sliding mode control. |
