Dual-Purpose dc-dc/ac PWM Modular Power Converter as Dual-Output Hybrid Converter

Abstract

Power electronic converters play a crucial role inintegrating renewable energy sources into modern electrical systems and enabling the development of hybrid nanogrids and microgrids. These systems typically feature an architecture that combines both dc and ac buses. Within this framework, dualpurpose converters have emerged, capable of interfacing with both dc and ac grids, thereby enhancing modularity and standardization in converter configurations. This paper expands on this class of converters by introducing a novel topology with dual outputs, allowing it to simultaneously supply both ac and dc loads. The proposed converter is designed using a modular arrangement of basic buck-boost cells. Its effectiveness is demonstrated through simulations, successfully powering a three-phase ac load alongside a dc load.