PERFORMANCE ANALYSIS OF HYBRID ENERGY STORAGE SYSTEM-BASED DC MICROGRID FOR A DEVELOPED CONTROL TECHNIQUE

Mahesh Kumar∗ and Mylavarapu Ramamoorty∗∗

Keywords

DC microgrid, hybrid energy storage system, hydrogen storage system, DC–DC converters, power management

Abstract

This work proposes a control technique for the operation of the proposed DC microgrid (DCMG) consisting of a Hybrid Energy Storage System (HESS). The dynamic performance analysis of DCMG for the developed control scheme has been carried out in islanded mode under several operating conditions. In DCMG, the HESS consists of Battery Energy Storage System (BESS) and Hydrogen Storage System (H2SS). The bidirectional dc-dc converter and dc-dc buck converter have been used to integrate BESS and H2SS, respectively, into DCMG. In the islanded mode, during power mismatch in DCMG, the proposed control scheme allows to control the operation of BESS to fulfil the power mismatch, and beyond the capacity of BESS, the surplus generated power is stored in the H2SS. The proposed control scheme is aimed to manage the power and rated voltage of DCMG for all cases.

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