RT Journal Article T1 Single-Switch Bipolar Output DC-DC Converter for Photovoltaic Application A1 Pérez Litrán, Salvador A1 Durán Aranda, Eladio A1 Semião, Jorge A1 Barroso Rodríguez, Rafael AB Bipolar DC grids have become an adequate solution for high-power microgrids. This ismainly due to the fact that this configuration has a greater power transmission capacity. In bipolar DCgrids, any distributed generation system can be connected through DC-DC converters, which musthave a monopolar input and a bipolar output. In this paper, a DC-DC converter based on thecombination of single-ended primary-inductor converter (SEPIC) and C´ uk converters is proposed,to connect a photovoltaic (PV) system to a bipolar DC grid. This topology has, as main advantages,a reduced number of components and a high efficiency. Furthermore, it can contribute toregulate/balance voltage in bipolar DC grids. To control the proposed converter, any of the techniquesdescribed in the literature and applied to converters of a single input and single output can be used.An experimental prototype of a DC-DC converter with bipolar output based on the combination ofSEPIC and C´ uk converters was developed. On the other hand, a perturb and observe method (Pand O) has been applied to control the converter and has allowed maximum power point tracking(MPPT). The combined converter was connected in island mode and in parallel with a bipolar DCmicrogrid. The obtained results have allowed to verify the behavior of the combined converter withthe applied strategy. PB MDPI SN 2079-9292 YR 2020 FD 2020-07 LK http://hdl.handle.net/10272/18859 UL http://hdl.handle.net/10272/18859 LA eng NO Pérez Litrán, S. P., Durán Aranda, E., Semião, J. & Barroso Rodríguez, R. S. (2020). Single-Switch Bipolar Output DC-DC Converter for Photovoltaic Application. Electronics, 9(7), 1171. DOI: https://doi.org/10.3390/electronics9071171 DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026