A decision-making approach for the health-aware energy management of ship hybrid power plants

Tsoumpris, Charalampos; Theotokatos, Gerasimos

doi:10.1016/j.ress.2023.109263

Cited by 3 publications

(4 citation statements)

References 55 publications

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“…To find an emission index for each pollutant an approach similar to the one adopted for the operability index described above is found. Taking into account the EM P jk of each cell of the scatter diagram, the function z jk that states if the equilibrium is verified, and the probability of occurrence of the cell p jk , it is possible to define an operability index e for each incoming direction analyzed g i and for each pollutant P following the formulation in (16).…”

Section: Fuel Consumption and Emissions Assessmentmentioning

confidence: 99%

“…However, DP systems are increasingly being used in merchant applications as well as in the pleasure industry. [14][15][16] Therefore, there is a growing interest in providing tools that can support designers in assessing the potential impact that such operations may have on emissions, not only to ensure station-keeping performance but also to evaluate the environmental implications in the preliminary phase. [17][18][19] In this paper, an ad-hoc nonlinear constrained optimization problem deriving from equilibrium and interactions considerations is formulated and the station capability of two different propulsion configurations are evaluated considering the same available power onboard.…”

Section: Introductionmentioning

confidence: 99%

“…However, DP systems are increasingly being used in merchant applications as well as in the pleasure industry. 14–16 Therefore, there is a growing interest in providing tools that can support designers in assessing the potential impact that such operations may have on emissions, not only to ensure station-keeping performance but also to evaluate the environmental implications in the preliminary phase. 17–19…”

Section: Introductionmentioning

confidence: 99%

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Probabilistic operability and greenhouse gas assessment during dynamic positioning operations

Fruzzetti,

Donnarumma,

Maggiani

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part M:

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A Dynamic Positioning system automatically maintains both the position and heading of a vessel by using its thrusters in the presence of external disturbances. This goal is ensured by a controller that compensates for the environmental disturbances and computes the proper set-points for each actuator. The core of such a system is composed of force and thrust allocation modules that tailor the required forces and moment over the available actuators. The propulsion systems used are often over-actuated and the thrust allocation algorithm implies an infinite number of solutions since it is impossible to solve analytically the problem. Over the years efforts from the research community dealt with the optimization in terms of accuracy, energy consumption, and maintenance with innovative allocation strategies were investigated. However, no publications or rules indicate the procedure for the evaluation of exhaust gas emission during dynamic positioning operations. For such a reason, the paper aims to develop an optimization procedure that includes an ad-hoc objective function with relative non-linear constraints for the thrust allocation logic that tends to minimize the actuators’ thrust. The procedure accounts for non-linear hydrodynamic effects on the thrust generation, including thruster-thruster and thruster-hull interactions, to obtain the most realistic results as possible. Moreover, following the IMO suggestions, the production of greenhouses gases emissions is evaluated in probabilistic terms. The proposed approach provides indicators in terms of yearly operability, fuel consumption, and environmental footprint during dynamic positioning operations that could be used for proper decisions in ship deployment.

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Section: Fuel Consumption and Emissions Assessmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Probabilistic operability and greenhouse gas assessment during dynamic positioning operations

Fruzzetti,

Donnarumma,

Maggiani

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part M:

View full text Add to dashboard Cite

show abstract

“…De Pascali et al [10] proposed a deterioration-aware EMS for hybrid vehicles by incorporating the electrochemical degradation dynamics of the battery, thus improving system lifetime and achieving fuel economy. A deterioration-aware energy management approach is proposed in [11] to deal with lifetime improvement of ship hybrid plants. The proposed strategy considers the tradeoff operation between fuel consumption and system degradation, achieving a 4 times reduction in system failure rate.…”

Section: Introductionmentioning

confidence: 99%