A new high-efficiency single-phase transformerless PV inverter topology
PublisherIEEE Press. Institute of Electrical and Electronics Engineers
Rights accessOpen Access
There is a strong trend in the photovoltaic 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 H-bridge with a new ac bypass circuit consisting of 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 are demonstrated.
CitationKerekes, T. [et al.]. A new high-efficiency single-phase transformerless PV inverter topology. "IEEE transactions on industrial electronics", Gener 2011, vol. 58, núm. 1, p. 184-191.