Modelling and Implementation of Single Phase Dual Stage Grid-Tied Solar Power Inverter

This paper presents the modelling, simulation and hardware evaluation of a single phase dual stage inverter suitable for grid connected solar photovoltaic (PV) applications. The proposed grid-tied solar power converter converts the solar power to DC using a simple boost converter and then converts it into AC using a single phase DC-AC inverter, which is connected to the power grid. A closed loop simulation of the proposed setup is modelled with Maximum Power Point Tracking (MPPT) in MATLAB-Simulink environment. The hardware implementation of the proposed system is implemented using the Labvolt home energy production system and the experimental results are presented for various solar irradiance conditions. Experimental results on the grid measurements confirm that the system is able to supply the harvested energy from the PV to the grid for all irradiance levels.