Analysis of Solar Fed Grid-Connected Single-Stage Single-Phase Boost Inverter

摘要

Growing demand of electricity and need of reducing greenhouse gas emission towards clean and green energy generation system has prompted renewed interest in the renewable energy resources like solar photovoltaic (PV), fuel cells and wind power-based distributed generation systems. The single-stage single-phase differential boost inverter (SSSPDBI) appears as an attractive solution in photovoltaic system where interfacing and regulating of low DC voltage power source with AC loads or utility grid becomes indispensable. The SSSPDBI has a remarkable advantage with respect to a two-stage conversion strategy, consisting of a DC-DC boost converter and a traditional buck voltage source inverter in between the low voltage DC sources and AC output. This paper focuses on the detailed simulative analysis of solar PV fed SSSPDBI towards synchronisation with grid. The pure and smooth sinusoidal output voltage having low total harmonics distortion (THD) is obtained at output terminal of inverter and grid for proper synchronisation. Finally, MATLAB simulations have been performed under different load conditions to validate the effectiveness of overall system.