An evaluation of electric motors for ship propulsion
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Authors
Bassham, Bobby A.
Subjects
Advisors
Ashton, Robert
Date of Issue
2003-06
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
An evaluation was conducted of the various propulsion motors being considered
for electric ship propulsion. The benefit of such an evaluation is that all of the propulsion
options being considered by the U.S. Navy have been described in one document. The
AC induction motor, AC synchronous motor, High Temperature Superconducting (HTS)
motor and Superconducting DC Homopolar Motor (SDCHM) are examined. The properties,
advantages, and disadvantages of each motor are discussed and compared. The
power converters used to control large propulsion motors are also discussed. The Navy’s
IPS program is discussed and the results of concept testing are presented. Podded propulsion
is introduced and the benefits are discussed. The final chapter presents the simulation
results of a volts/Hertz controlled 30 MW induction motor. The evaluation revealed
that the permanent magnet motor is the best propulsion motor when considering
mature technology, power density, and acoustic performance. HTS motors offer significant
volume reductions and improved acoustic performance as compared to conventional
motors. This includes both AC and DC HTS motors. The main obstacle for the SDCHM
remains the unavailability of high current capacity brushes.
Type
Thesis
Description
Series/Report No
Department
Electrical Engineering
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
xviii, 97 p. : ill. (some col.) ;
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.