Sizing optimization of a fuel cell/battery hybrid system for a domestic ferry using a whole ship system simulator

A power source sizing methodology for a hybrid fuel cell/battery powered domestic ferry is presented in this paper. The sizing objective in this study is to minimize both the system first and operational costs, taking into consideration maintenance and replacement costs of the fuel cell and battery systems. According to the ferry power requirement, different combinations of fuel cell and battery blocks are modelled in order to select the optimal combination according to the sizing objective. Power requirement of the ferry is calculated using a validated time-domain three-degree of freedom total ship system simulator implemented in the MATLAB/Simulink environment.