Transient load share management of a diesel electric hybrid powertrain for ship propulsion
by Sotirios K. Topaloglou; George Papalambrou; Konstantinos Bardis; Nikolaos Kyrtatos
International Journal of Powertrains (IJPT), Vol. 7, No. 4, 2018

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.

Online publication date: Tue, 16-Oct-2018

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