A New High-efficiency Single-phase Transformerless PV Inverter Topology
Location: USA
Publication date: 2009-12-01
Published in: IEEE Transaction on Industrial Electronics, June 2009
ref. DOI: 10.1109/TIE.2009.2024092

Local members

External members

Kerekes, T., Teodorescu, R. , Vazquez, G. , Aldabas, E.



There is a strong trend in the photovoltaic (PV) inverter technology to use transformerless topologies in order to acquire higher efficiencies combining with very low ground leakage current. In this paper a new topology, based on the HBridge with a new AC bypass circuit consisting in a diode rectifier and a switch with clamping to the DC midpoint is proposed. The topology is simulated and experimentally validated and a comparison with other existing topologies is performed. High conversion efficiency and low leakage current is demonstrated.


Associated projects

National public

National private