Publication

Abstract : The proposed paper gives an extensive performance of a dq controller using single phase photovoltaic grid system. In three phase synchronous frame controller benefits are well established. But for single phase system dq transformation is a confront task. Hence this controller exists in remodelling an orthogonal pair by an actual input current and a fictional current. This controller can maintain the steady state error to zero current control of respective DC quantities. The control has been carried out using a dual-stage transformer less inverter using photovoltaic sources as the input source for grid system. This current controller assures, active current is injected to grid and thus results in maximum efficiency of about 98.69% and current harmonics to 3% in simulation validation using MATLAB/SIMULINK. The analysis for various irradiance, various temperature is also discussed and same is compared with single H Bridge inverter system. The experimental analysis using TMS320F28335 board is also validated for the proposed system without filter circuit to show the inverter and grid voltage are well synchronized.