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Simulation-based Efficiency Evaluation of Auxiliary Drives for Marine Vessels

Lookup NU author(s): Edward Sciberras, Dr Bashar Zahawi, Dr Dave Atkinson



An auxiliary drive is an electric machine and power electronic converter mounted in parallel with the main ship propulsion system. With a bidirectional electric drive system, Power Take In and Power Take Off are both possible, enabling hybrid operational modes. This gives the opportunity for slow speed motoring periods with improved prime mover operation and potentially lower emissions. Permanent magnet and induction machines are the two likely electrical machine choices. This paper presents an evaluation of the relative efficiencies of the two machine types when implemented on a shipboard auxiliary drive system. Depending on the operational strategy and the adopted propulsion system, the auxiliary drive is required to operate at various points in its operating envelope. By using a detailed computer model of an auxiliary drive system, the efficiencies at various operating conditions are calculated, showing how knowledge of the ship’s operational profile is essential in order to identify the configuration with the best efficiency.

Publication metadata

Author(s): Sciberras EA, Zahawi B, Atkinson DJ

Editor(s): Bertram, V;

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 13th International Conference on Computer Applications and Information Technology in the Maritime Industries

Year of Conference: 2014

Pages: 427-436

Date deposited: 26/06/2015

Publisher: Technische Universität HamburgHarburg


Library holdings: Search Newcastle University Library for this item

Series Title: COMPIT’14

Series Editor(s): Volker Bertram

ISBN: 9783892206729