Multi-application multi-port DC–DC converter consisting six ports with four main operation modes

Abstract

This paper proposes a multi-port DC–DC converter consisting of three input ports and two output ports extendable to three. The converter is designed based on quadratic boost converter, a technique for bidirectional port, an auxiliary source and two output ports with opposite polarities. Designed method of the configuration makes it suitable for multi-applications with flexible operations. Connection of the converter to a bipolar system is possible due to opposite polarities of output ports. In addition, output voltage can be doubled by series connection between the two out ports and it is introduced as the third output port of the converter. The other advantages of the converter are its appropriate voltage gain, performance in stand-alone mode with storage port and possibility of boosting voltage with similar voltage gains in different operation modes. To validate feasibility of the converter and investigate coordination of its performance with theory, a prototype is prepared for 120 W output power.