Empirical study on the application of fuel cell–battery hybrid electric propulsion systems in small coastal ships
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The International Maritime Organization aims to reduce the total annual greenhouse gas emissions from ships by more than 50% by 2050. South Korea has established the goal of a 37% reduction in global greenhouse gas emissions by 2030, and many studies have been conducted in relation to this. In this study, a diesel fuel propulsion system with the same output as a fuel cell– battery hybrid electric propulsion system was constructed as a test bed to demonstrate the fuel consumption and greenhouse gas emission reduction characteristics of fuel cell–battery hybrid electric propulsion systems. The characteristics of the exhaust emissions and fuel consumption were compared and analyzed under the load profile of actual ships operating in the sea. The exhaust emissions and fuel consumption of the diesel propulsion system installed on the test bed were measured and analyzed, and the economics of the two propulsion systems were evaluated by comparing the hydrogen consumption and price of ships using the fuel cell–battery hybrid system. Furthermore, a hybrid electric propulsion system using a fuel cell and a battery was designed to verify the stability of the ship’s load power system, and its usefulness and applicability to real ships were verified through simulation.
Abstract
The International Maritime Organization aims to reduce the total annual greenhouse gas emissions from ships by more than 50% by 2050. South Korea has established the goal of a 37% reduction in global greenhouse gas emissions by 2030, and many studies have been conducted in relation to this. In this study, a diesel fuel propulsion system with the same output as a fuel cell– battery hybrid electric propulsion system was constructed as a test bed to demonstrate the fuel consumption and greenhouse gas emission reduction characteristics of fuel cell–battery hybrid electric propulsion systems. The characteristics of the exhaust emissions and fuel consumption were compared and analyzed under the load profile of actual ships operating in the sea. The exhaust emissions and fuel consumption of the diesel propulsion system installed on the test bed were measured and analyzed, and the economics of the two propulsion systems were evaluated by comparing the hydrogen consumption and price of ships using the fuel cell–battery hybrid system. Furthermore, a hybrid electric propulsion system using a fuel cell and a battery was designed to verify the stability of the ship’s load power system, and its usefulness and applicability to real ships were verified through simulation.
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