Improving the Transient Response of Hybrid Energy Storage System for Voltage Stability in DC Microgrids Using an Autonomous Control Strategy

In renewable microgrid systems, energy storage system (ESS) plays an important role, as buffer, to stabilize the by compensating demand-generation mismatch. Battery serves a decisive and critical component. However, due low power density consequently slow dynamic response lifetime of BESS is observably reduced high current stress, specifically experienced during abrupt/transient variations. Hence, hybridization with supercapacitor conferred. Additionally, controllers designed for systems should substantially respond transient requirement system. this article, we propose decoupled control strategy batteries supercapacitors based on k - Type compensators nonlinear PI controller (NPIC) respectively. The formulated design tested voltage regulation in standalone microgrid. Furthermore, comparative analysis presented benchmark low-pass-filter (LPF) controller. results obtained shows proposed technique possess faster improved capabilities. For test regulated at 48 V various abrupt load-generation case studies presented, methodology maintains significantly deviation between 47 51 contrast 45 56 observed LPF methodology. complexity simpler comparison obviation additional sensing devices achieved, that inherently reduces detrimental effect ESS condition.