A prototype ship propulsion device based on an electric motor that spins propellers in opposite directions was constructed and tested. The device uses a single motor to spin both propellers without a gearbox. The rotor is attached to one propeller and the stator to the other. It relies on the propellers to balance rotational speeds of the two shafts. Non-intrusive Load Monitoring (NILM) techniques were used to diagnose performance of the machine. This analysis confirmed a sensor failure in testing.
Electrical instrumentation of a contra-rotating propeller drive system
2011
98 pages
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 11).
Hochschulschrift
Elektronische Ressource
Englisch
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