A Droop-Based Adaptive Power Management System for Energy Storage Integration to DC Grid Using a Modified Dual Active Bridge Converter

This article proposes an adaptive power management system (APMS) for energy storage integration to the dc grid using a modified dual active bridge (DAB) bi-directional dc–dc converter (BDC). The converter can achieve high voltage (HV) gain and zero voltage switching (ZVS) for a wide range of loading conditions with distributed voltage stress. An APMS is designed with a voltage droop control-based model reference adaptive control (MRAC). A reduced-order harmonic model of the converter is used for the APMS design. The proposed APMS does not require detailed knowledge of the system parameters and is also robust to uncertainty and multiple disturbances. The proposed converter and its control technique are verified in MATLAB/SIMULINK platform. An experimental laboratory prototype is also developed for 500 W rating, and the results are presented to validate the system’s efficacy by comparing it with conventional proportional-integral (PI) and sliding mode controllers.