High Efficiency Transformerless Photovoltaic DC/AC Converter with Common Mode Leakage Current Elimination: Analysis and Implementation

Jorge Cardoso, Rodolfo Orosco, Nimrod Vazquez, Héctor López, Claudia Hernandez and Joaquin Vaquero
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Jorge Cardoso: Tecnológico Nacional de México/Instituto Tecnológico de Celaya, Celaya 38010, Mexico
Rodolfo Orosco: Tecnológico Nacional de México/Instituto Tecnológico de Celaya, Celaya 38010, Mexico
Nimrod Vazquez: Tecnológico Nacional de México/Instituto Tecnológico de Celaya, Celaya 38010, Mexico
Héctor López: Tecnológico Nacional de México/Instituto Tecnológico de Celaya, Celaya 38010, Mexico
Claudia Hernandez: Tecnológico Nacional de México/Instituto Tecnológico de Celaya, Celaya 38010, Mexico
Joaquin Vaquero: Área de Tecnología Electrónica, Universidad Rey Juan Carlos, 28933 Madrid, Spain

Energies, 2022, vol. 15, issue 9, 1-21

Abstract: Photovoltaic (PV) electricity is widely used because of its positive environmental impact. To properly feed this energy into the grid, an electronic power converter, known as a PV inverter, is needed, which may or may not use a transformer. This article details the analysis and design of a transformerless photovoltaic inverter topology for grid-connected applications. This converter offers high efficiency, a low number of elements, and negligible leakage current, which makes it a good alternative for this application. The converter has been validated through an experimental prototype and compared with other topologies with similar characteristics.

Keywords: common-mode (CM); leakage current; photovoltaic systems; transformerless inverter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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