Optimal design of hybrid battery energy storage system for minimizing the number of batteries with high efficiency control algorithm based on fuzzy logic

This paper proposes the optimization method and the control algorithm for hybrid battery energy storage system (HBESS) by combination of the high energy battery and high power battery. The proposed design method minimizes the total number of the batteries through the cost function. The control algorithm for high efficiency is composed of fuzzy logic controller (FLC) so as to reflect the various control conditions and the dynamic characteristics of battery. Finally, the proposed design method and algorithm are validated through informative simulation based on experimental results.