Control of photovoltaic system connected to DC bus in all-electric ship

Kurniawan, Akbar; Shintaku, Eiji

doi:10.1109/icamimia.2017.8387568

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…Although the emission of marine vessels is not as much as the contribution from industry and road transportation, efforts to decrease ships energy consumption are worth doing as the number of vessels is predicted to be continuously increased. International Maritime Organization (IMO) also targeting the ship emissions to be reduced in half by 2050 [3].…”

Section: Introductionmentioning

confidence: 99%

Short-circuit current analysis of DC distribution system in a ship with non-electric propulsion

Kurniawan,

Gumilang,

Sarwito

et al. 2024

IJAPE

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Converting conventional AC radial shipboard distribution system to DC system has been recognized as a potential high impact solution to reduce ship’s fuel consumption. As big ships in Indonesia commonly use low voltage AC (LVAC) distribution system an effort to apply low voltage direct current (LVDC) distribution system without replace the propulsion system is a plausible choice. However, technical and economical investigations are required before recommendation to convert the shipboard distribution system to LVDC is officially launched. In this study, technical aspect in the term of short-circuit current is discussed. The goal of this study is to analyze how much the impact on the short-circuit current when LVDC system replaces LVAC system. The impact may affect the feasibility of LVDC system as the short-circuit current in a system dictate the scheme and capacity of the protection devices. Numerical simulations on a sample vessel are performed to obtain the profile of maximum short-circuit currents on all panels. The results show that the utilization of LVDC system decreases the short-circuit current by 10 times. Further investigations on the economic aspect needs to be performed to give clearer view of the feasibility of the LVDC system.

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Section: Introductionmentioning

confidence: 99%

Short-circuit current analysis of DC distribution system in a ship with non-electric propulsion

Kurniawan,

Gumilang,

Sarwito

et al. 2024

IJAPE

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“…For decades, alternating current (AC) distribution system has been dominantly used in marine vessels, especially in a large one [1]- [3]. In most vessels, the main electric supply is produced by 3-phase diesel generator while the electric loads are dominated by AC devices, either single or three-phase loads [4]. Moreover, efficient energy conversion from AC to direct current (DC) or vice versa had not been well-developed at that time.…”

Section: Introductionmentioning

confidence: 99%

“…DC distribution systems offer some advantages compared to the AC system [4]. One of them is the lower cable impedance due to the absence of inductive reactance caused by zero voltage frequency [7].…”

Section: Introductionmentioning

confidence: 99%

Power flow analysis of DC distribution system in a ship with non-electric propulsion

Kurniawan

Kurniawan²,

Sarwito³

et al. 2023

IJECE

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<span lang="EN-US">Direct current (DC) shipboard power distribution system offers higher power efficiency and voltage stability compared to the alternating current (AC) systems due to lower impedance. The implementation of DC distribution system in all-electric ship seems to be worthy since the reduction of power loss and voltage drop could overcome the drawback of DC system. However, the effectiveness of DC distribution system in ship with non-electric propulsion has not been investigated yet. Unlike in an all-electric ship, electric power flow in the distribution system of a ship with mechanic propulsion is considerably lower. The study aims to provide numerical analysis of power loss and voltage drop reduction on DC distribution system that applied to a ship with mechanic propulsion. The power flow analysis is performed on a tanker ship. Contrary to the hypothesis, the results show that the DC power distribution increase the power losses about 15% compared to AC system due to the addition of rectifier and inverter. However, the voltage drops are decreased in DC distribution system. Further investigation in the other aspects should be performed before concludes whether DC distribution system is worthy to be used in the aforementioned ship.</span>

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“…The photovoltaic (PV) panels installed on the AES play an important role in reducing carbon emissions and fuel cost [6,7]. Power management strategies are applied to effectively utilize the power generated from PV panels during the voyage.…”

Section: Introductionmentioning

confidence: 99%

Two-Axis Solar Tracker Applied With All-Electric Ship

Boonyapakdee

2022

ECTI-EEC

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The all-electric ship (AES) offers new hope for the reduction of fuel consumption and carbon emissions. To fully exploit the photovoltaics (PVs) installed on the AES, the two-axis solar tracker is proposed to find the best tilt and surface azimuth angles of PV panels. The tilt angle is computed by particle swarm optimization (PSO) regarding the time and ship location. The surface azimuth angle is adjusted according to the hemisphere. The dynamic performance of the proposed solar tracker is evaluated using MATLAB/Simulink simulation. According to the simulation results, the proposed solar tracker can obtain maximum energy all day, while the voyage time, fuel consumption, and carbon emissions are significantly reduced. Moreover, the proposed solar tracker can effectively operate under communication delay caused by the global positioning system (GPS).

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Control of photovoltaic system connected to DC bus in all-electric ship

Cited by 9 publications

References 9 publications

Short-circuit current analysis of DC distribution system in a ship with non-electric propulsion

Short-circuit current analysis of DC distribution system in a ship with non-electric propulsion

Power flow analysis of DC distribution system in a ship with non-electric propulsion

Two-Axis Solar Tracker Applied With All-Electric Ship

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