A multi-input multi-output converter for effective power management

This paper presents a multiport non-isolated direct current (DC)-DC converter tailored for microgrid applications. The proposed topology employs a bidirectional buck-boost structure, enabling flexible integration of sources and loads operating at different voltage and power levels. A centralized control strategy is developed to coordinate power flow among renewable energy sources (RESs), energy storage systems (ESSs), and loads, while maintaining a regulated and boosted DC-link voltage. The main contributions of this work include the systematic design of the DC-link capacitor, steady-state analysis for generating appropriate switching signals, and comprehensive experimental validation under diverse operating conditions. The effectiveness and practical feasibility of the proposed converter are demonstrated through hardware results. In addition, a state-space model is developed to analyze system dynamics and assess stability across varying operating scenarios.