Multiport Power Converter

Multiport power converters are used to connect various types of energy sources and loads. These sources are usually connected via DC-DC converters to a common DC bus. However, such approach requires multiple power conversions, which reduces the efficiency of the whole system. The article describes a multiport converter with a parallel connection of transformers. The proposed topology uses a smaller number of power conversions, which increases the efficiency of the whole system. Furthermore, the topology allows easy addition or removal of next power sources or loads. A new approach is also used in deriving of a converter mathematical model. The proposed control allows the transfer of energy between arbitrary converter ports. The proposed topology and its control were verified by simulation, and the results are presented in the article.