High-Efficiency Transformerless Single-phase Photovoltaic Inverter

  title={High-Efficiency Transformerless Single-phase Photovoltaic Inverter},
  author={Roberto Gonz{\'a}lez and Jesus Lopez and Pablo Sanchis and Eugenio Gub{\'i}a and Alfredo Ursua and Luis Marroyo},
  journal={2006 12th International Power Electronics and Motion Control Conference},
Grid-connected photovoltaic (PV) systems usually include a line transformer in their power conversion stage. This transformer guarantees galvanic isolation between the grid and the PV system, thus providing personal protection and avoiding leakage currents between the PV system and the ground. Furthermore, it also ensures that no continuous current is injected into the grid. However, because of its low frequency (50 Hz), the transformer is big, heavy and expensive. As an alternative to the grid… CONTINUE READING
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