A DC Offset Current Compensation Strategy in Transformerless Grid-Connected Power Converters

@article{Buticchi2011ADO,
  title={A DC Offset Current Compensation Strategy in Transformerless Grid-Connected Power Converters},
  author={Giampaolo Buticchi and Emilio Lorenzani and Giovanni Franceschini},
  journal={IEEE Transactions on Power Delivery},
  year={2011},
  volume={26},
  pages={2743-2751}
}
A line frequency transformer is usually employed in grid-connected power converters, from both renewable and traditional energy sources, in order to suppress the DC current component and the ground leakage current. Solutions employing a high frequency transformer or employing no transformer at all have recently been investigated in order to reduce size, weight and cost. As a consequence, unless a suitable remedy is adopted, a DC current component exceeding the limits enforced by international… CONTINUE READING
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