DOI: 10.36347/sjet

Pages: 320-325

This paper proposes and analyzes the performance of a new grid connected inverter topology with Solar PV (SPV) as a dc source. The simulation is done in SIMULINK/ MATLAB Software. The RMS inverter output voltage is kept slightly higher than the RMS grid voltage and the power transfer to the grid is controlled by controlling the phase lag angle of grid with respect to inverter. It is shown that when the phase lag angle of the grid is changed, the THD in output current, RMS current, active power and reactive power changes while RMS voltage and output voltage THD remains approximately the same. This paper shows that if the phase angle increases, the grid current THD reduces and RMS grid current increases. The simulation results with the variation of phase angle are tabulated and the variations of THD, P and Q with phase angle are shown graphically. These results are compared with those obtained from mathematical analysis and found to be in agreement.