Evaluation of Three-Phase Transformerless Photovoltaic Inverter Topologies

  title={Evaluation of Three-Phase Transformerless Photovoltaic Inverter Topologies},
  author={Tamas Kerekes and Marco Liserre and Remus Teodorescu and Christian Klumpner and Mark Sumner},
  journal={IEEE Transactions on Power Electronics},
This paper analyzes and compares three transformerless photovoltaic inverter topologies for three-phase grid connection with the main focus on the safety issues that result from the lack of galvanic isolation. A common-mode model, valid at frequencies lower than 50 kHz, is adopted to study the leakage current paths. The model is validated by both simulation and experimental results. These will be used to compare the selected topologies, and to explain the influence of system unbalance and the… CONTINUE READING
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