Modelling and Control of a Photovoltaic Cell Connected to a Three-Level Inverter on Grid

Nowadays‎, ‎the green energies have attracted a considerable attention in real life‎. ‎One of the important and useful cases‎, ‎is the solar energy‎. ‎In sunny regions‎, ‎such energy sources are more important than fossil sources‎. ‎However‎, ‎as a main defection of such apparatus‎, ‎the variation of the output voltage due to the weather and load conditions‎, ‎should be regulated‎. ‎Therefore‎, ‎a control system that can stabilize the state of this configuration‎, ‎is necessary‎. ‎In this paper‎, ‎a state feedback is utilized to regulate the voltage output‎. ‎Simple structure and implementation are the main properties of such control system‎. ‎In this way‎, ‎an optimal LQR and a suboptimal control have been designed‎. ‎Simulating these control systems for some real parameters show the effectiveness of the proposed methods‎.