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The Scientific World Journal
Volume 2015 (2015), Article ID 458068, 12 pages
Research Article

An Analysis of Transient Overvoltages during the Energization of Electric Ship Propulsion Systems

Department of Energy, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy

Received 16 December 2014; Revised 25 May 2015; Accepted 23 June 2015

Academic Editor: Christoph Grimm

Copyright © 2015 Morris Brenna et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper addresses the resonance phenomena that can occur in an isolated distribution system during transient events such as repeated energizations or power converter switching. In particular, the aim of this study is to analyze the energization of an onboard radial distribution system installed on an electric ship and to determine how the various leakage parameters that can cause resonance problems such as high peak overvoltages when the circuit breaker is closed are relevant. The paper presents a detailed model of whole distribution system, which is validated using infield measurements that refer to a real case in which these events damaged the ships transformers, causing it to be removed from duty.