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Marine economy and flexibility with auxiliary drives

Lookup NU author(s): Edward Sciberras



Electric propulsion in ships brings about a potential for improved efficiency, with associated fuel savings. This suitability is dependent on vessel type and operational conditions, requiring careful consideration if any benefits are to be gained. Hybridisation by combining mechanical and electrical concepts helps to exploit the advantages of both types of propulsion such that overall propulsive efficiency is improved. Auxiliary electric drives take advantage of the flexibility of electric systems to provide propulsive power at low vessel speeds via alternate prime power sources, when main engine operation is otherwise suboptimal. This work analyses the possibility of efficiency improvement by the provision of an auxiliary bidirectional drive to two case ships and their corresponding operational profile. A model was built to assess fuel consumption, such that different propulsion options can be compared by simulation, with results presented for a RoRo ship and tug vessel.

Publication metadata

Author(s): Sciberras EA

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Annual Research Conference 2013 (ARC 2013)

Year of Conference: 2013

Date deposited: 08/04/2013

Publisher: Newcastle University