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Showing 1 to 20 of 22 for “"Electric Ship"”.
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Modeling of the electric ship
… Navy continues to refine its designs for future ships, one approach that it is currently being explored is to use a unified electrical grid to power every system aboard a ship, including propulsion and weapons. Some concerns with this design are estimating the power demands placed upon the grid …
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Systems modeling for electric ship design
Diesel and gas turbine electric ship propulsion are of current interest for several types of vessels that are important for commercial shipping and for the next generation of war ships. During the design process of a platform, a choice has to be made between two different fundamental concepts …
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Electric ship digital twin : framework for cyber-physical system security
… model that can be used for a digital twin of an electric ship. The model is an end-to-end simulation of a ship from prime mover to maneuvering, seakeeping, and propeller ventilation in random waves representing the behavior of a physical ship. There is a trend towards increasingly networked …
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Strategic Harmonic Filter Placement In Electric Ship and Utility Power Systems
<p>Modern electrical power systems are increasingly evolving to employ more efficient and controllable power electronic devices. Unfortunately, the nonlinear nature of the essential power electronic devices inherently creates distortion in a power system because of the harmonic characteristics of …
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DC to DC power conversion module for the all-electric ship
The MIT end to end electric ship model is being developed to study competing electric ship designs. This project produced a model of a Power Conversion Module (PCM)- 4, DC-to-DC converter which interfaces with the MIT model. The focus was on the Medium Voltage DC (MVDC) architecture, and therefore, …
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Modeling and simulation of an all electric ship in random seas
… Masters thesis, conducted in support of the All Electric Ship (AES) early design effort, presents two computational programs for analysis and simulation: a full-scale, end-to-end AES simulator and an analytical performance and stability assessment tool for the ship's propulsion drive; the …
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Modular machinery arrangement and its impact in early-stage naval electric ship design
Electrical power demands for naval surface combatants are projected to rise with the development of increasingly complex and power intensive combat systems. This trend also coincides with the need of achieving maximum fuel efficiency at both high and low hull speeds. A proposed solution to meet …
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High efficiency and high performance power converters and motor drives for hybrid vehicles and electric ship propulsion
… motor drives for emerging application in hybrid (electric) vehicle and electric ship propulsion. It includes eight papers organized in three parts"--Abstract, page iv.
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On the Simulation of an All Electric Ship Powertrain Utilizing a Surface Piercing Propeller Via a Modular Main Propulsion Plant Model
… historical trends indicate an interest in all electric ship design, and the use of surface piercing propellers for small craft. Due to the availability of towing tank data from a surface piercing propeller, an all electric prime mover module, surface piercing propeller module, propeller shaft …
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Uncertainty analysis of power systems using collocation
The next-generation all-electric ship represents a class of design and control problems in which the system is too large to approach analytically, and even with many conventional computational techniques. Additionally, numerous environmental interactions and inaccurate system model information make …
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Preliminary Shipboard Layout of Navy Integrated Power and Energy Corridor (NiPEC)
Naval ship systems increasingly require more electricity. The Zumwalt class destroyer was the Navy’s first modern fully electric ship. Through its integrated power system, the prime movers provide electric power to meet propulsion, ship service, offensive, and defensive systems requirements. The …
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Prediction of performance and maneuvering dynamics for marine vehicles applied to DDG-1000
Being able to accurately model the performance of ships is an integral part of the ship design process. A considerable amount of money is invested into predicting how a ship will maneuver in a given sea state. Furthermore, it is vital to understand the powering requirements and potential …
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Hybrid power-system architecture for micro-grid
… and drive loads. The propulsion plant of an electric ship serves as an example of a micro-grid with a focus on efficiency and dynamic performance. The proposed power distribution system employs doubly-fed machines for generation and for variable speed loads, and can be used where …
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Design and Modeling of Shipwide Navy Integrated Power and Energy Corridor Cooling System
Naval ship systems are increasingly requiring more and more electricity to power the myriad advanced offensive and defensive electrically-powered systems. The Zumwalt class destroyer was the Navy’s first fully electric ship. The next generation destroyer, DDG(X), is also planned to be an electric …
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Evaluation of non-intrusive monitoring for condition based maintenance applications on US Navy propulsion plants
… Based Maintenance (CBM) applications on US Navy ships as part of the Office of Naval Research Electric Ship Integration (ESI) Initiative. The NILM is a device that measures an electrical component's performance by applying a single voltage and current transducer to a ship's existing power …
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Integration of System Templating into the Rapid Ship Design Environment
Navy ship mission systems are increasingly power-intensive and integrated and thus are increasingly dependent on ship system performance, especially the electrical distribution, thermal management, and data control systems. In recognition of this, the U.S. Navy has recently worked with the Electric …
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Evaluating a multi-jet Impingement air heat exchanger design for PEBB 6000 using Solidworks Flow Simulation
The Power Electric Building Block (PEBB) 6000 is a shipboard power converter unit developed by the Navy's Electric Ship Research and Development Consortium (ESRDC). Cooling strategies for the PEBB 6000 are constrained by its size, accessibility, and high heat flux. This paper proposes an air heat …
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Conic optimization of electric power systems
The electric power grid is recognized as an essential modern infrastructure that poses numerous canonical design and operational problems. Perhaps most critically, the inherently large scale of the power grid and similar systems necessitates fast algorithms. A particular complication distinguishing …
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Design of a free-running, 1/30th Froude scaled model destroyer for in-situ hydrodynamic flow visualization
… of interest to propeller designers and the Electric Ship Research and Development Consortium (ESRDC). The 1 / 3 0 th scale model provides unsteady, time-resolved, accurate 3D flow visualization and propeller loading data as well as measurements of the effects on the electrical propulsion …
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Manufacturability Assessment of the Navy Integrated Power and Energy Corridor (NiPEC)
The growing electrical demands of sophisticated naval vessels necessitate the development of advanced power distribution methods. With the U.S. Navy’s shift towards fully electric ships, exemplified by the Zumwalt class destroyer and the forthcoming DDG(X), the demand for electrical power on future …
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