Coordination of Large Pulsed Loads on Future Electric Ships
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Authors
Domaschk, Lori N.
Ouroua, Abdelhamid
Hebner, Robert E.
Bowlin, Oscar E.
Colson, W.B.
Subjects
Electric ship
energy storage
power system
pulse loads
energy storage
power system
pulse loads
Advisors
Date of Issue
2007-01
Date
Publisher
IEEE
Language
Abstract
Part of the technical versatility of future all-electric ships is the potential ability to share large amounts of power among a variety of
high-power loads. To help evaluate this potential and to provide information to help guide technology selection, a physics-based model
of a power train for an electric ship has been developed and implemented on three modeling platforms. Using this model, three different
investigations have been carried out to explore aspects of the behavior of a rotating machine power source for a shipboard rail launcher.
These were: 1) influence of rapid charging of the rotating machine system on the ship power system; 2) use of the stored energy in the
rotating machines to improve ship power quality; and 3) use of the stored energy in the rotating machines to power a pulsed free-electron
laser. Each study highlighted different integration opportunities and challenges. The first showed that, because the charging of the rail
launchers was through 5-MW motors, there could be a voltage sag for a few cycles, but this could easily be managed so that the sag could
be reduced to an inconsequential level. The second study showed that, with appropriate power electronics, the stored energy in the rail
launcher power supply can be used to correct power quality problems introduced by other ship systems. Finally, the stored energy in the
launcher power supply can be used to fire a free electron laser for ship defense. This feature opens the possibility of routine operation
of the entire ship at highest efficiency, i.e., with the smallest number of gas turbines operating near full power, while providing stored
energy needed for ship defense.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1109/TMAG.2006.887676
Series/Report No
Department
Physics
Organization
Identifiers
NPS Report Number
Sponsors
Funding
This work was supported by the Office of Naval Research.
Format
Citation
IEEE Transactions on Magnetics, Vol. 43, No. 1, January 2007
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.