Analysis of Energy Storage Solutions for Ship Maneuvering in Ports

The recent regulation about pollution reduction in port areas promote the development of electric ships, at least to operate with no fuel during approaching and departing. The paper presents the analysis of different energy storage alternatives for the case of power supply of a ferry during the docking and undocking manoeuvres. Considering that the use of batteries does not fully comply with the maritime conditions, short-term energy storage technologies are studied as alternative, specifically flywheels and supercapacitors. After the analysis of these systems, based on models parametrized from prototypes characterized at the lab, neither of them is suitable for the case study. However, the use of a battery/SCs hybrid energy storage provides a techno-economic feasible solution, specially under the situation of dimensioning the complete system according to the consumption profile of the ferry.