Power Management Strategies Based on Propellers Speed Control in Waves for Mitigating Power Fluctuations of Ships

This article proposes two novel power management strategies (PMSs) to enhance the electrical quality in twin-screw all-electric ships (AESs) during vessel-wave encountering. Soothing PMS (SPMS) focuses on mitigating fluctuations of propulsion system since it has significant impacts extreme conditions. For this purpose, modifies propellers’ speed based in-and-out-of-water effect loss factor (LF) wave collisions. method does not require typical equipment, such as energy storage systems (ESSs), moderate variations. Hence, decreases ESS demand capacity and maintenance costs at design operation levels. An integrated ship model is introduced determine LF waves thoroughly. Furthermore, due propeller dynamics altering, an adaptive delay embedded SPMS improve its efficiency, advanced (ASPMS) developed. To varying operation, a straightforward algorithm proposed, which impose compute complex differential equations. Simulations reveal that both PMSs soothe remarkably reduce frequency voltage Meanwhile, ASPMS surpasses terms improving quality.