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.

Keywords:

Photovoltaic cell , state feedback control , LQR , three level inverter