A cost-effective and emission-aware power management system for ships with integrated full electric propulsion

Kanellos, Fotios D.; Anvari‐Moghaddam, Amjad

doi:10.1016/j.epsr.2017.05.003

Cited by 99 publications

(66 citation statements)

References 29 publications

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“…Full electric ships will become an attractive solution for marine transportation with shorter distances to decrease the energy consumption [41][42][43]. The other considerable benefit of electric propulsion ships, similar to other electric transport modes, is to minimize GHG emissions and further reduce cost [44,45]. However, the important question that remains is to what extent ships and ferries can be fully electrified.Airplanes are operated solely by liquid fuels at present, while it is expected that this solitary propulsion system will be complemented by electricity and hydrogen in the upcoming decades to meet the emissions reduction goal [46,47].…”

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confidence: 99%

Global Transportation Demand Development with Impacts on the Energy Demand and Greenhouse Gas Emissions in a Climate-Constrained World

et al. 2019

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The pivotal target of the Paris Agreement is to keep temperature rise well below 2 °C above the pre-industrial level and pursue efforts to limit temperature rise to 1.5 °C. To meet this target, all energy-consuming sectors, including the transport sector, need to be restructured. The transport sector accounted for 19% of the global final energy demand in 2015, of which the vast majority was supplied by fossil fuels (around 31,080 TWh). Fossil-fuel consumption leads to greenhouse gas emissions, which accounted for about 8260 MtCO2eq from the transport sector in 2015. This paper examines the transportation demand that can be expected and how alternative transportation technologies along with new sustainable energy sources can impact the energy demand and emissions trend in the transport sector until 2050. Battery-electric vehicles and fuel-cell electric vehicles are the two most promising technologies for the future on roads. Electric ships and airplanes for shorter distances and hydrogen-based synthetic fuels for longer distances may appear around 2030 onwards to reduce the emissions from the marine and aviation transport modes. The rail mode will remain the least energy-demanding, compared to other transport modes. An ambitious scenario for achieving zero greenhouse gas emissions by 2050 is applied, also demonstrating the very high relevance of direct and indirect electrification of the transport sector. Fossil-fuel demand can be reduced to zero by 2050; however, the electricity demand is projected to rise from 125 TWhel in 2015 to about 51,610 TWhel in 2050, substantially driven by indirect electricity demand for the production of synthetic fuels. While the transportation demand roughly triples from 2015 to 2050, substantial efficiency gains enable an almost stable final energy demand for the transport sector, as a consequence of broad electrification. The overall well-to-wheel efficiency in the transport sector increases from 26% in 2015 to 39% in 2050, resulting in a respective reduction of overall losses from primary energy to mechanical energy in vehicles. Power-to-fuels needed mainly for marine and aviation transport is not a significant burden for overall transport sector efficiency. The primary energy base of the transport sector switches in the next decades from fossil resources to renewable electricity, driven by higher efficiency and sustainability.

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confidence: 99%

Global Transportation Demand Development with Impacts on the Energy Demand and Greenhouse Gas Emissions in a Climate-Constrained World

et al. 2019

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“…Transactions on Industrial Informatics of both source converters (see (4)). The proportional gain is set to K p = 1 and the integral gain K i is varied to three different values.…”

Section: A Simulation Resultsmentioning

confidence: 99%

“…N EXT generation of electric ships are expected to improve the power distribution system so that fuel savings, reduced size and weight, and enhanced reliability can be achieved [1]. Some of the strategies proposed to accomplish these objectives are the implementation of dc systems, the inclusion of renewable sources, especially solar energy, and the complete electrification of ships, merging the propulsion system with the rest of the services in an integrated power system [2]- [4]. In this new scenario, the use of energy storage systems provides opportunities to optimize the power management [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Assessment of COTS Converters-Based DC Integrated Power Systems in Electric Ships

Frances-Roger

Anvari‐Moghaddam

Rodriguez-Diaz

et al. 2018

IEEE Trans. Ind. Inf.

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Maritime applications have found in the integration of the electric power system a way to further improve efficiency and reduce the weight of new electric ships. This movement has led scientists to integrate smart management systems to optimize the overall behavior of the grid. In this context, power electronics play a key role in linking the different elements of the power architecture. Moreover, the transition towards a dc distribution, which has already been established in other applications, is being regarded as a promising alternative to ease the integration of renewable sources, batteries, and the ever increasing number of dc loads. In this paper blackbox models are proposed as a tool to foresee the effect of these complex interactions, overcoming the lack of detailed information about the power converters. Largesignal strategies are proposed in order to consider nonlinearities in the static and dynamic behavior of the converters. An accurate model of the physical layer is essential to allow intelligent systems to take the most out of the system performance. This approach offers the opportunity to study the dynamic response of complex interconnected systems, tune the system-level controllers, design protections or assess the compliance of the system dynamics with the standards. Experimental results are included in order to validate the proposed method.

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“…The optimal power management of SPS (OPMS) problem including the voyage plan and the operating cost in the midtime scale has been studied in [10], [15]- [18]. Particle swarm optimization (PSO) based algorithms are developed to solve the OPMS problem in [10], [15], [16]. In the three works, PPA and ESMC are considered for improving energy efficiency.…”

Section: B Literature Reviewmentioning

confidence: 99%

Optimal Power Management for Failure Mode of MVDC Microgrids in All-Electric Ships

Han

Yuan

et al. 2019

IEEE Trans. Power Syst.

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Optimal power management of shipboard power system for failure mode (OPMSF) is a significant and challenging problem considering the safety of system and person. Many existing works focused on the transient-time recovery without consideration of the operating cost and the voyage plan. In this paper, the OPMSF problem is formulated considering the mid-time scheduling and the faults at bus and generator. Twoside adjustment methods including the load shedding and the reconfiguration are coordinated for reducing the fault effects. To address the formulated non-convex problem, the travel equality constraint and fractional energy efficiency operation indicator (EEOI) limitation are transformed into the convex forms. Then, considering the infeasibility scenario affected by faults, a further relaxation is adopted to formulate a new problem with feasibility guaranteed. Furthermore, a sufficient condition is derived to ensure that the new problem has the same optimal solution as the original one. Because of the mixed-integer nonlinear feature, an optimal management algorithm based on Benders decomposition (BD) is developed to solve the new one. Due to the slow convergence caused by the time-coupled constraints, a low-complexity near-optimal algorithm based on BD (LNBD) is proposed. The results verify the effectivity of the proposed methods and algorithms.

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A cost-effective and emission-aware power management system for ships with integrated full electric propulsion

Cited by 99 publications

References 29 publications

Global Transportation Demand Development with Impacts on the Energy Demand and Greenhouse Gas Emissions in a Climate-Constrained World

Global Transportation Demand Development with Impacts on the Energy Demand and Greenhouse Gas Emissions in a Climate-Constrained World

Dynamic Assessment of COTS Converters-Based DC Integrated Power Systems in Electric Ships

Optimal Power Management for Failure Mode of MVDC Microgrids in All-Electric Ships

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