Design, optimization and energy efficiency analysis of a shaft generator for military ships

The maritime sector has become an increasingly significant domain, playing a critical role in global trade. In an effort to mitigate the emissions resulting from the burgeoning volume of maritime trade, the International Maritime Organisation (IMO) has promulgated a series of regulations. In order to comply with these regulations and improve energy efficiency, companies in the sector have concentrated on upgrading existing systems and improving operational processes. The configuration of energy systems on board naval ships is subject to variation depending on operational requirements, ship structure and the geographical regions where the ship will operate. In this context, a comparison of the technical, performance and energy efficiency impacts of 50 Hz and 60 Hz frequency systems used on ships is required. This thesis presents a comprehensive discussion of the role of shaft generators on naval ships and provides a detailed analysis of their impact on power systems, focusing on frequency, voltage characteristics and number of poles. The study goes on to analyse the contribution of shaft generators in meeting mechanical and electrical energy requirements from the perspective of system optimisation and energy efficiency. The analyses performed in ANSYS/Maxwell and Matlab/Simulink demonstrate that the selection of optimal values for naval ships is contingent on the requirements and demands of the specific system in question.