Comparison of H-bridge single-phase transformerless PV string inverters

Abstract

This paper presents a detailed comparison among single-phase transformerless string inverters for grid-connected PV systems. The characteristics of the PV modules and their non-idealities are taking into the account for the design and the performance of the inverter with respect to the IEEE 1547 Standard. Simulated and experimental results for the inverter topologies are carried out.