Abstract

Cell-level power processing in battery packs can provide better efficiency, reliability and safety benefits. As part of a broader investigation of how dual-active bridges can be used for such processing, a secondary voltage control and droop control strategy have been examined for the distributed power processing based battery (DPPB) energy storage system. The control strategy is divided into primary cell-level control with high gain droop and secondary voltage control and stability analysis. The performance of proposed control strategy is validated under different loading conditions by MATLAB®, SIMULINK®. The control strategy improves the power sharing of each cell in a DPPB, and voltage regulation of DPPB output.

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