Hardware model of a shipboard generator
Authors
Elkins, Gregory L.
Subjects
Advisors
Date of Issue
2009-06
Date
Publisher
Monterey California. Naval Postgraduate School
Language
en_US
Abstract
A hardware model of the Gas Turbine Generator (GTG) in use on the US Navy's DDG-51 Class Destroyer is constructed for use as a lab apparatus at the Massachusetts Institute of Technology's Laboratory for Electromagnetic and Electronic Systems (LEES). The components of the hardware model include a 5 kilowatt three-phase generator; DC power supplies and motors that function as the prime mover; computer software to implement speed and voltage control; and an input-output interface board that passes measurement and controller signals to and from the software environment. A numerical Simulink model of the GTG is developed that provides speed response to a change in electrical loading. The GTG model takes into account basic physical characteristics of gas turbine generators and is tuned to provide a response similar to that of the destroyer's Allison 501-K34 GTG. An empirical open-loop model of the tabletop generator is also developed in Simulink and subsequently provided with closed-loop feedback control. Controller gains are adjusted such that the tabletop's Simulink model provides a response likened to the GTG model. Proportional and Integral (PI) control of the tabletop generator is implemented in the software environment. The tabletop generator's response to a certain electrical transient is compared to the GTG response predicted by the Simulink model. Recommendations to improve the response of the tabletop generator are made based on analysis of actual speed sensor noise.
Type
Thesis
Description
CIVINS (Civilian Institutions) Thesis document
Series/Report No
CIVINS (Civilian Institutions) Theses and Dissertations
Department
Organization
CIVINS (Civilian Institutions)
Identifiers
NPS Report Number
Sponsors
Funder
Contract number: N6227197G0026.
CIVINS
CIVINS
Format
128 p. : col. ill.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
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.