engleski

Modelling and analysis of marine PEM fuel cell hybrid energy system

Developing more efficient and versatile marine power systems is important due to increasingly stringent emissions regulations. Without further action to reduce greenhouse gas emissions, the contribution of shipping will increase by 150% to 250% by 2050, reaching a share of 12% to 18% of global CO2 emissions. One way to achieve this is to transform the conventional power system and its energy management strategy into a hybrid system. The hybrid architecture itself is complex and broad enough, but not yet developed far enough for marine applications. The main argument for implementing a more complex system such as hybrid marine power system, is that additional options in energy management bring the operation of each energy source closer to its optimal operating point. This is especially important for internal combustion engines, which operate most of the time in the part-load range, where their efficiency can drop significantly. Today, the most common alternative energy source system is fuel cell technology with different types of fuel cells, batteries, and supercapacitors as energy storage systems. The objective of this research is to size and analyse one of the possible auxiliary power systems, namely a hydrogen PEM cell with its associated components. For this research, the model was developed using the AVL Cruise-M software package. The sizing is done according to the energy demand of the ferry operating on the local line. Fuel cells generate DC energy that is compatible with modern electric and hybrid naval architectures, and can be used in parallel, disconnectable configurations to meet the variable energy needs of the vessels. And, if renewable hydrogen is utilized, fuel cells are a true well- to-wake zero emission power source. By using the hybrid system, the specific fuel consumption on a given route could be reduced by about 5% compared to the case where only a diesel engine is used, and accordingly reduces exhaust emissions.

hybrid propulsion ; energy storage ; dynamic model ; marine system ; ship propulsion

nije evidentirano