A New High-Efficiency Single-Phase Transformerless PV Inverter Topology

By T. Kerekes, Remus Teodorescu, Pedro Rodriguez, G. Vázquez, E. Aldabas. IEEE transactions on industrial electronics (1982. Print), 2011

800 citations recorded by the source corpus.

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.

Subfields: Control and Systems Engineering, Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/136cd2f75f322d39513ad30f24c835a6c5485dae

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Citations in the corpus

Topology Review and Derivation Methodology of Single-Phase Transformerless Photovoltaic Inverters for Leakage Current Suppression (2015, background): “Substituted by the defined common-mode and differentialmode voltages, the high-frequency differential-mode and common-mode voltage loops can be derived [49].”
The Benefits of SiC mosfets in a T-Type Inverter for Grid-Tie Applications (2017, background): “Recent studies [2]–[4] have compared in detail two- and three-level inverter topologies based on semiconductor losses and filter considerations, and have identified that in particular for higher switching frequencies, three-level inverter topologies can have lower semiconductor losses than their two”
Transformerless Inverter With Virtual DC Bus Concept for Cost-Effective Grid-Connected PV Power Systems (2013, background): “Therefore, it is necessary to add extra filters into these topologies to absorb this CM current [21]–[23].”
Control Issues in Single-Stage Photovoltaic Systems: MPPT, Current and Voltage Control (2012, background): “Digital Object Identifier 10.1109/TII.2012.2186973 the single-stage transformerless power converter seems to be the best choice to achieve the aforementioned goals [79], [80].”
Transformerless Inverter Topologies for Single-Phase Photovoltaic Systems: A Comparative Review (2020, background): “to the half of the supply voltage [101].”
Leakage Current Reduction in a Single-Phase Bidirectional AC–DC Full-Bridge Inverter (2012, background): “Over the past few years, there have been many research publications [3], [4], [17] and industrial practices [18]–[21] established to tackle these issues.”