| Summary: | Optimal design and performance analysis of renewable energy system to serve the cruise ship main and auxiliary power in Stockholm, Sweden is presented in this paper. The goal is to integrate renewable energy systems in small and large ships for greener and sustainable marine transport. The power load for the cruise ship was determined, and modeling and simulation analysis was used to investigate the daily and annual performance of the power system architectures including the efficiency and capacity factors of the energy conversion systems. The total electrical power generated from the solar PV, PEM fuel cell, and Diesel generator; the cost of electricity; and the greenhouse gas and particulate matter PM emissions were determined. The proposed renewable energy system offers a good penetration of renewable energy system (13.83%), and greenhouse gas and particulate emissions reduction (9.84% emissions reduction compared to baseline system using Diesel engines). The integration of renewable and clean power systems such as solar PV and PEM fuel cell (high electrical efficiency) is very attractive solution for onboard ship power generation. They are economically viable (reduce the cost of Diesel fuel), cleaner than the conventional gas turbine and internal combustion engines and reduce the dependency on fossil fuel. Keywords: Solar PV, PEM fuel cell, Diesel generator, Hybrid power system, Marine propulsion system, Cruise ship
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