Research on a kind of photovoltaic grid-connected cascaded inverter

Based on a kind of hybrid control photovoltaic grid-connected cascaded inverter proposed by the author, this paper proposes a simple method by which we can confirm the triggering angles of the unit inverter with the step wave overlap control mode, computes the output power of each unit inverter, proposes the operation mode exchange solution to solve the unbalanced output power problem of the cell modules, through the analysis and computation, introduces how to choose and match the photovoltaic cells of various cascaded units. The simulation results show the validity of the proposed method.