Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
SIMULATION OF HYBRID POWER SYSTEMS FOR VESSELS
Submission Author:
Crisley de Souza Peixoto , MG
Co-Authors:
Crisley de Souza Peixoto, Bruno Carmo
Presenter: Crisley de Souza Peixoto
doi://10.26678/ABCM.COBEM2021.COB2021-0365
Abstract
Climate concerns, regulations, and fuel costs are driving higher efficiency designs in the shipping industry. Research works suggest that hybrid power systems can be a viable option to reduce fuel consumption and emissions. However, more studies are required to analyze its net gains in different applications. In this work, numerical simulations of power systems are performed in a causal approach, including a non-hybrid or base case and a hybrid case, for a diesel-electric Platform Supply Vessel (PSV). Dynamical and static models are considered for the power sources, namely, diesel generator sets (gensets) and a lithium-ion battery pack connected through an AC electrical network. For the Energy Management System (EMS) of the base case, an optimization of gensets is performed, and for the hybrid case, a rule-based control combined with an optimization of the generators is considered. The analysis shows, for the case study, that the greatest potential for battery usage is achieved in near port operations. Cleaner operations were allowed in these regions due to the increase in energy efficiency and the disconnection of generators. A fuel consumption reduction of 6.35% and CO2 emission reductions of 5.81% were achieved for the complete mission. Also, an increase of 1.73% in the overall energy efficiency was accomplished.
Keywords
hybrid power systems, marine vessels, energy efficiency, emission reductions, lithium-ion batteries
