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Power management in dc-grid through two-input dc-dc converter

A new two-input dc-dc converter for power management in dc grid is presented in this paper. This two-input converter is evolved through the combination of Boost and SEPIC converter. Steady-state and state-space analysis is performed to understand the performance of the proposed converter and then to design appropriate digital controllers for better power management. Using relative gain array theory the interactions among the control-loop is identified and then suitable pairing of controlling and controlled variable is determined. A 48 V, 150 Watt converter performance is analyzed, compared with the simulation and measurement observations for demonstrating the power management.