Photovoltaic’s inverter directly connected to the grid

Abstract

The paper describes a modification of the topology of a photovoltaic’s inverter with a flying inductor connected to a single phase grid in absence of any transformer. The topology advanced provides the application of buck-, boost- and buck-boost modes of transforming at both half-waves of the grid voltage. It works as a three level inverter reducing high frequency disturbances. The symmetric work in both half-waves facilitates the control required.