Optimal Control Energy Management Strategy for Hybrid Propulsion and Power Supply Vessels using Data-Driven Load Forecasting

Hybrid technology can significantly reduce fuel consumption and emission for vessels that have high power demand peaks followed by long periods of low loading. Hybrid technology refers to powertrain layouts that consist of hybrid propulsion and/or hybrid power supply. Advanced energy management strategies (EMS) are required to make optimal use...

Fuel consumption and emissions of ocean-going cargo ship with hybrid propulsion and different fuels over voyage

Hybrid propulsion and using liquefied natural gas (LNG) as the alternative fuel have been applied on automobiles and some small ships, but research investigating the fuel consumption and emissions over the total voyage of ocean-going cargo ships with a hybrid propulsion and different fuels is limited. This paper tries to fill the knowledge...

Propulsion System Control of Ships Sailing in Waves: Refinement of Diesel Engine's Dynamic Response by Means of Optimal Governor Gains Scheduling

The need for advanced ship propulsion control systems is constantly increasing as the demand for high vessel performance is growing at the same time. Speed trials are considered as an operation during which the vessel has to achieve the highest performance by attaining the agreed maximum ship speed. However, sometimes vessels have to sail in...

Vessel propulsion modelling: a linear parameter varying approach

Clients and vessel manufacturers are always looking for ways to increase the performance of their fleet. Therefore, a novel modelling strategy for the propulsion plant of naval vessels is explored here. This has been done by using the Linear Parameter Varying (LPV) framework. On one hand, a non-linear description is needed to fully understand...

An exploratory study on the effect of manoeuvres on submarine propeller cavitation inception

Confidential thesis, only summary available.

Control of Propeller Cavitation in Operational Conditions

Off design conditions can have a severe impact on ship propulsion system behaviour. Resistance increase for instance leads to a higher engine loading, and can also easily lead to a decrease of cavitation inception speed with respect to calm water conditions. Wakefield variations due to ship motions, waves and manoeuvres also have effect on...

CONTROL OF PROPELLER CAVITATION DURING A DECELERATION