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This paper describes a new application of SEPIC (Single Ended Primary Converter) and Cuk converter for distributed generation systems. A DC/DC converter configuration based on a combination of both converters is proposed. In the resulting topology the switching node is shared by the SEPIC and Cuk converter, since they have the same instantaneous duty cycle. This topology allows the connection of renewable energy sources to microgrids type bipolar DC link and to cover the current needs of new distributed generation units with efficient, economical and easily way. Simulation results show that this combining of two converter topologies with appropriated modulation schemes are adequate for the functions of voltage balance and current redistribution in DC microgrid (MG).

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