Zonal electrical distribution systems in large ships: Topology and control

High quality and continuity of supply requirements make the introduction of zonal electrical distribution systems and storage devices on ships interesting. Zones can be operated in both AC and DC, but DC is preferable thanks to its advantages compared with AC benefits. The main DC drawback is the current fault interruption, due to current no zero-crossing. In this paper, a comparison between AC and DC zonal supplies is presented. Advantages and drawbacks of each structure are highlighted. In addition, a DC zone topology and a power flow control strategy are proposed.