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The influence of operating strategies regarding an energy optimized driving style for electrically driven railway vehicles

Lookup NU author(s): Professor Roberto Palacin

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

© 2021 by the authors. Licensee MDPI, Basel, Switzerland.The aim of this paper is the optimization of velocity trajectories for electrical railway vehicles with the focus on total energy consumption. On the basis of four fundamental operating modes — acceleration, cruising, coasting, and braking — energy-optimal trajectories are determined by optimizing the sequence of the operating modes as well as the corresponding switching points. The optimization approach is carried out in two consecutive steps. The first step ensures compliance with the given timetable, regarding both time and position constraints. In the second step, the influence of different operating strategies, such as load distribution and the switch-off of traction components during low loads, are analyzed to investigate the characteristics of the energy-optimal velocity trajectory. A detailed simulation model has been developed to carry out the analysis, including an assessment of its capabilities and advantages. The results suggest that the application of load-distribution techniques, either by a switch-off of parallel traction units or by a load-distribution between active units, can affect the energy-optimal driving style.

Publication metadata

Author(s): Prohl L, Aschemann H, Palacin R

Publication type: Article

Publication status: Published

Journal: Energies

Year: 2021

Volume: 14

Issue: 3

Online publication date: 23/01/2021

Acceptance date: 17/01/2021

Date deposited: 07/06/2021

ISSN (electronic): 1996-1073

Publisher: MDPI AG

URL: https://doi.org/10.3390/en14030583

DOI: 10.3390/en14030583

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