Push-pull based pseudo DC-link PV microinverter

In photovoltaic (PV) systems, module level power electronics has focused a lot of attention in the last years. The microinverter, also known as AC module, has shown to be an interesting solution. For this purpose, PV microinverter architectures with pseudo DC-link consisting in a DC-DC converter followed by an unfolding inverter have been analyzed as good alternatives. This paper proposes a new push-pull based pseudo DC-link microinverter. Simulation results are provided to validate the behavior of the proposed microinverter. Comparison with the classical interleaved flyback pseudo DC-link microinverter is given to show the interest of the proposed structure. Results show improvement in terms of conversion efficiency and power quality.