A Photovoltaic based DC/AC Single-Phase Pure Sine wave Inverter

Abstract: Solar photovoltaic energy is a booming industry in power generation sector. The DC-AC power converter plays a major role in photovoltaic conversion independent of PV module topology. In this paper, a single phase full bridge converter along with H-bridge inverter is simulated using MATLAB/Simulink. An intermediary High-frequency step-up transformer is used to step up the low voltage PV panel output to the mains AC supply voltage. The circuit has a total harmonic distortion below 5% at steady state. Perturb and Observe MPPT is used at the full bridge converter side to control the duty cycle and Sinusoidal Pulse Width Modulation is used to control the switching at H-Bridge inverter side. The distortion at the output side is minimized by employing a suitable filter to attain better performance of the inverter. Keywords: Solar Photovoltaic (PV); Full-Bridge DC-DC Converter; High-Frequency step-up transformer; Single-Phase H-Bridge pure sine-wave inverter; Sinusoidal Pulse Width Modulation (SPWM); Power Electronics.