Inverter Configurations Comparative for Residential PV-Grid Connected Systems

In the present paper three different residential grid-connected photovoltaic inverter configurations are analyzed. A unified large-signal linear energy-sampled data model is achieved which allows the design of a control scheme that extracts the maximum energy from the PV array. The application of this control approach to central, string and multi-sting inverters lead to a comparative in terms of the design restrictions for these topologies which is evidenced by means of simulation results