Title: Transient load share management of a diesel electric hybrid powertrain for ship propulsion

Authors: Sotirios K. Topaloglou; George Papalambrou; Konstantinos Bardis; Nikolaos Kyrtatos

Addresses: Laboratory of Marine Engineering (LME), National Technical University of Athens, Zografos, Greece ' Laboratory of Marine Engineering (LME), National Technical University of Athens, Zografos, Greece ' Laboratory of Marine Engineering (LME), National Technical University of Athens, Zografos, Greece ' Laboratory of Marine Engineering (LME), National Technical University of Athens, Zografos, Greece

Abstract: In this paper, a transient load share methodology for a hybrid diesel electric marine propulsion system is presented. The aim of the system is the performance enhancement and reduction of gaseous emissions during low-load transient operation. The controlled variable is λ while the manipulated variable is the torque from the electric motor regulated by a frequency inverter. The model for the λ behaviour is based on experimental identification while λ values in feedback loop come from an actual and a virtual sensor, the later based on first principles modelling. A nominal model is used for the synthesis of a robust H controller for the controlled variable regulation. Experimental results in a full scale hybrid diesel electric powertrain under realistic loading scenarios verified the successful hybridisation.

Keywords: hybrid-electric propulsion; emissions control; diesel engines; robust control.

DOI: 10.1504/IJPT.2018.095634

International Journal of Powertrains, 2018 Vol.7 No.4, pp.341 - 365

Received: 29 Jun 2016
Accepted: 18 Jun 2017

Published online: 16 Oct 2018 *

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