Abstract
Since recent marine application of fuel cell systems has been due largely limited to small-sized ships, this paper was aimed to investigate the technical applicability of molten carbonate fuel cell (MCFC) for medium and large-sized ships, using a 180 kW class hybrid test bed with combined power sources: A 100 kW MCFC, a 30 kW battery and a 50 kW diesel generator. This study focused primarily on determining whether the combined system designed in consideration of actual marine power system configuration could function properly. A case study was conducted with a 5500 Twenty-foot Equivalent Unit (TEU) container vessel. The operation profile was collected and analyzed in order to develop electric load scenarios applicable to the power system. Throughout the experiment, we evaluated the power quality of the voltage and frequency in the process of synchronization and de-synchronization across the power sources. Therefore, research results revealed that power quality continued to be excellent. This outcome provides insight into the technical reliability of MCFC application on large marine vessels.
Highlights
Hydrogen has started to be regarded as an alternative ocean fuel source
In this study, when the molten carbonate fuel cell (MCFC),towhich is responsible the sources, base loadsuch of the fuel and cell-based generator, we developed a load scenario for power quality analysis through voltage fluctuation combined power source, is applied to the ship with other power sources, such as energy storage system (ESS) and diesel rate, frequency fluctuation rate, scenario and frequency stabilization time forthrough power faults that may occur in generator, we developed a load for power quality analysis voltage fluctuation rate, the process of synchronizing to or disconnection from a single bus line
Figure generator with the sent the synchronization signal, it generator with the MCFC and ESS systems
Summary
Hydrogen has started to be regarded as an alternative ocean fuel source. As a result, studies on hydrogen-fueled fuel cells have been actively conducted in Europe and the United States [1–3].Fuel cells are known as a technology in which the chemical energy associated with hydrogen molecules is converted to electricity and thermal energy through electrochemical reactions with air.Thanks to the minimization of emissions, the noise in operation and high adaptability of various fuel sources, fuel cells are considered a next-generation technology for clean production [4,5].In particular, fuel cell-based power plants are expected to reduce greenhouse gas emissions by 30%compared to fossil fuel-based power generation. Hydrogen has started to be regarded as an alternative ocean fuel source. Studies on hydrogen-fueled fuel cells have been actively conducted in Europe and the United States [1–3]. Fuel cells are known as a technology in which the chemical energy associated with hydrogen molecules is converted to electricity and thermal energy through electrochemical reactions with air. Thanks to the minimization of emissions, the noise in operation and high adaptability of various fuel sources, fuel cells are considered a next-generation technology for clean production [4,5]. Fuel cell-based power plants are expected to reduce greenhouse gas emissions by 30%. Considering such benefits, many developed countries have been carried out a number of projects to stimulate the fuel cell application to industries [4–10]
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