Results 21 to 30 of about 694 (184)

Deep Reinforcement Learning-Based Resilient Restoration of Ship Cyber–Physical Systems

Journal of Marine Science and Engineering
The rapid development of cyber–physical technologies has led to enhanced observability and controllability of shipboard power systems. However, the reliance of shipboard power systems on information networks undermines the traditional security provided ...
Yahui Liu, Shuli Wen, Qiang Zhao, Bing Zhang, Zhangchao Lu   +4 more
doaj   +1 more source

Deep Reinforcement Learning-Based Energy and Power Management for Ships: A Perspective Review of Methods and Applications

Energies
Energy and power management systems (EMS/PMS) are essential for electric-propulsion ships, affecting propulsion performance, fuel consumption, emissions, and component lifetime. As shipboard power systems integrate heterogeneous energy resources and face
Yujeong Kang, Dita Puspita, Il-Yop Chung
doaj   +1 more source

Directional protection scheme for MVDC shipboard power system [PDF]

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 2016
DC shipboard power systems are gaining popularity primarily because they allow each prime mover to be operated at an optimal speed with respect to fuel efficiency. Another notable advantage is the simplified operation of generators in parallel without concern for frequency synchronization.
Kuntal Satpathi, Navpreet Thukral, Abhisek Ukil, Michael Adam Zagrodnik   +3 more
openaire   +2 more sources

Impact of the voltage dips in shipboard microgrid power systems [PDF]

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017
Voltage and frequency transient variations are the most common power quality issues in a ship microgrid system. In this paper, the impacts of the voltage dips induced by the sudden-load of ballast pump are analyzed in detail for the ship power systems.
Wenzhao Liu, Josep M. Guerrero, Mehdi Savaghebi, Juan C. Vasquez 0001, Tomasz Tarasiuk, Mariusz Gorniak   +5 more
openaire   +1 more source

Shipboard power system dynamic reconfiguration optimization strategy considering time-varying load characteristics

Zhongguo Jianchuan Yanjiu
ObjectivesIn order to ensure the safe and stable operation of a shipboard power system under fault conditions, a dynamic reconfiguration optimization method is proposed that considers time-varying load characteristics.MethodsFirst, considering the ...
Qihuan WU, Zhiyu ZHU, Weihan HAO, Denghao YANG, Cheng XU   +4 more
doaj   +1 more source

Pole-to-Pole Short-Circuit Categorization for Protection Strategies in Primary Shipboard DC Systems

IEEE Open Journal of the Industrial Electronics Society
The protection of dc systems in mobility applications, such as land transport, aircraft, and shipping, presents significant challenges due to the need for high-power-density equipment in confined spaces.
Alejandro Latorre, Thiago Batista Soeiro, Xinqian Fan, Rinze Geertsma, Marjan Popov, Henk Polinder   +5 more
doaj   +1 more source

Giant phytoplankton revealed by in situ imaging

Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.
Abstract Deployment of an autonomous Zooglider in the western Mediterranean Sea revealed the presence of long phytoplankton chains attaining maximum lengths of 6.4–10.4 mm suspended in situ. Elongate chains included the diatoms Guinardia, Proboscia, two other diatom morphologies, and solitary filaments of the cyanobacterium Trichodesmium. Most elongate
Mark D. Ohman, Karine Leblanc, Jeffrey S. Ellen, Sven Gastauer   +3 more
wiley   +1 more source

Emergency Prevention Control as a Means of Power Quality Improvement in a Shipboard Hybrid Electric Power System

Energies
The problems associated with the greenhouse effect have increased the desire to limit carbon dioxide (CO2) emissions into the atmosphere, including emissions produced by shipboard electrical power systems.
Sergii Tierielnyk, Valery Lukovtsev
doaj   +1 more source

Constraining the Permeability and Outer‐Rise Hydration at the Central America Margin

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Subduction zones are important drivers of Earth's geochemical evolution; the presence of water within the subduction system has substantial implications for geohazards, including the style of seismicity and the volume of magma generated at arc volcanoes.
D. Douglas, B. T. Aagaard, J. Naliboff, S. Naif   +3 more
wiley   +1 more source

Subsurface Production of Marine Derived Bacterial Tetraether Lipids: Implications for Paleoceanographic Reconstruction

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are widely used as paleoclimate proxies on land, yet their origin in marine environments remains incompletely constrained. Here, we analyze suspended particulate matter collected from five depths at an open‐ocean station in the northern South China Sea and provide depth‐resolved evidence
Jiaming Zhou, Jing Zhao, Yanwei Wang, Zian Tong, Huanye Wang, Binbin Guo, Longhui Deng, Fengping Wang, Qianyong Liang, Liang Dong   +9 more
wiley   +1 more source