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A fuel-optimal operating strategy is proposed for a parallel hybrid electric railway vehicle that involves both a modification of the driving strategy and a corresponding energy management. The optimisation is based on an algebraic inverse system model describing the longitudinal dynamics and the complete power train. Aiming at a small computing time, only the dominant effects of the train longitudinal...
This paper presents numerical results for the optimization of trajectories for standard diesel and hybrid railway vehicles with respect to the fuel consumption between two successive stops. First, a nonlinear model of the complete power train of a standard railway vehicle, purely driven by an internal combustion engine, is described. Based on the four different operating regimes — acceleration, cruising,...
In this paper, a control-oriented model of a combustion-heating system for vehicles such as buses, coaches and trucks is developed. Based on this model, a novel model-predictive on-off strategy is proposed for the control of the combustion-heating system. Experiments are carried out to obtain a fair comparison of the predictive on-off controller with a classical on-off controller. The classical on-off...
In this paper, a basic simulation model of the longitudinal dynamics is developed for a diesel hybrid railway vehicle with a battery as energy storage system. This model represents an inverse system description that employs a given duty cycle to compute all system variables in a purely algebraic manner. Based on the developed simulation model, three different optimization strategies aiming at the...
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