Optimal Sizing of Battery Energy Storage Systems for Hybrid Marine Power Systems

This paper introduces an analytical design methodology for Battery Energy Storage Systems (BESS) in hybrid marine vessels. Models for performance evaluation of a BESS composed by a battery array, an AC/DC power converter and a transformer are introduced and used to evaluate the potential fuel savings, projected lifetime and cost-benefit of BESS installation on a considered hybrid marine power system. By parametric sweep of free design parameters, the trade-off between different performance indices is analyzed and the optimal sizing (energy capacity and rated power) of the BESS can be obtained.