Design a Multiport DC-DC Converter for Hybrid Renewable Nano-grid System

Multiple renewable DC sources must interact in a DC Nano-grid to supply reliable power to loads. A nano-grid is a small form of a smart micro grid that can also be utilized as a standalone power generator. When combining several energy sources with varying voltage ranges, multiport converters are becoming one of the most suitable solutions. Multiport converters are becoming a main focus of research because of its small size, low switch required, and high efficiency. In this paper, a multiport DC-DC converter is presented to integrate fuel cells, solar panels, and batteries in a DC Nano-grid. The proposed converter has lower cost, a small number of switches, and has a high reliability. It also can provide bidirectional power flow between batteries and the DC grid.