Integrated Design and Control Approach for Marine Power Systems Based On Operational Data; “Digital Twin to Design”

This paper proposes an algorithm to design ship power systems in the preliminary design phase. As a case study, an embedded control is integrated into the preliminary design of the ship power system, at the level of Energy Management System (EMS). The embedded control developed for the algorithm aims for cost, availability, safety and emissions optimization from the top layer. At the power system level, a few alternatives are considered such as full electric propulsion and fuel-based energy producers. Different Key Performance Indicators (KPIs), Key Exception Indicators (KEIs) and Key Improvement Indicators (KIIs) for design are evaluated for cost optimization purposes. Power plant sizing results of an Offshore Supply Vessel based on batteries or Generating Sets (GENSETs) power contribution are extracted with the proposed pro-clean power plant design algorithm structure. The result of this first simplified simulation not just include a comparative evaluation between 7 different types of batteries for an all electric ship sizing but also a maximum and instantaneous Depth of Discharge (DoD) of the batteries among the OSV load profile register which could be used as a control bandwidth to consider at the EMS level. The presented algorithm structure is a preface for later hybrid systems power plant sizing generalization.