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Application and improvement of a direct method optimization approach for battery electric railway vehicle operation

Schenker, Moritz and Schirmer, Toni and Dittus, Holger (2020) Application and improvement of a direct method optimization approach for battery electric railway vehicle operation. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. SAGE Publications. doi: 10.1177/0954409720970002. ISSN 0954-4097.

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Official URL: http://dx.doi.org/10.1177/0954409720970002

Abstract

While the largely electrified rail network allows for direct utilization of renewable energy sources, there is still a considerable share of diesel-powered trains operating on non- and partly electrified tracks. To replace these, the more sustainable alternatives such as battery electric railway vehicles need to present a viable option with sufficient range. This paper aims to adapt and improve an existing optimization algorithm, previously used with diesel-powered trains, for the operation of battery electric railway vehicles. In this new approach, battery control is optimized alongside train control, utilizing a direct method solver to find the minimum energy trajectory. Furthermore, a detailed train model is implemented that is designed for operation on partly electrified tracks. To yield a highly accurate, yet also sufficiently fast algorithm, a numerical analysis is conducted and the parameters of the algorithm are determined accordingly. Finally, the application of the adapted algorithm on a use case in Germany shows that both velocity profile and control adapt in a way that minimizes utilization of the battery. The results indicate that the proposed algorithm presents a reliable and robust method to obtain minimum energy controls for battery electric railway vehicles with any electrification pattern.

Item URL in elib:https://elib.dlr.de/137138/
Document Type:Article
Title:Application and improvement of a direct method optimization approach for battery electric railway vehicle operation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schenker, Moritzmoritz.schenker (at) dlr.dehttps://orcid.org/0000-0001-7609-5278
Schirmer, ToniToni Schirmer (at) dlr.dehttps://orcid.org/0000-0001-5531-9041
Dittus, HolgerHolger.Dittus (at) dlr.dehttps://orcid.org/0000-0002-3981-5560
Date:29 October 2020
Journal or Publication Title:Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1177/0954409720970002
Publisher:SAGE Publications
ISSN:0954-4097
Status:Published
Keywords:Direct method, optimal control, battery electric railway vehicles, battery control, partly electrified tracks, railway optimization, minimum energy trajectories
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Rail Transport
DLR - Research area:Transport
DLR - Program:V SC Schienenverkehr
DLR - Research theme (Project):V - NGT BIT
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Vehicle Energy Concepts
Deposited By: Schenker, Moritz
Deposited On:13 Nov 2020 10:19
Last Modified:09 Dec 2021 11:37

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