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Review of Application of Energy Storage Devices in Railway Transportation
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.ORCID-id: 0000-0001-8697-855X
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. (Future Energy Center)ORCID-id: 0000-0003-1001-2489
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.ORCID-id: 0000-0003-1597-6738
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. (Future Energy Center)ORCID-id: 0000-0002-7233-6916
2017 (Engelska)Ingår i: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 105, s. 4561-4568Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Regenerative braking is one of the main reasons behind the high levels of energy efficiency achieved in railway electric traction systems. During regenerative braking, the traction motor acts as a generator and restores part of the kinetic energy into electrical energy. To use this energy, it should be either fed back to the power grid or stored on an energy storage system for later use. This paper reviews the application of energy storage devices used in railway systems for increasing the effectiveness of regenerative brakes. Three main storage devices are reviewed in this paper: batteries, supercapacitors and flywheels. Furthermore, two main challenges in application of energy storage systems are briefly discussed. 

Ort, förlag, år, upplaga, sidor
2017. Vol. 105, s. 4561-4568
Nyckelord [en]
Energy Storage System, Railway, Battery, Supercapacitor, Flywheel
Nationell ämneskategori
Naturresursteknik Energisystem
Forskningsämne
energi- och miljöteknik
Identifikatorer
URN: urn:nbn:se:mdh:diva-34049DOI: 10.1016/j.egypro.2017.03.980ISI: 000404967904101Scopus ID: 2-s2.0-85020733634OAI: oai:DiVA.org:mdh-34049DiVA, id: diva2:1054962
Konferens
8th International Conference on Applied Energy, ICAE 2016; Beijing; China; 8 October 2016 through 11 October 2016
Projekt
STREAM
Forskningsfinansiär
VINNOVA, 2014-04319Tillgänglig från: 2016-12-09 Skapad: 2016-12-09 Senast uppdaterad: 2018-10-06Bibliografiskt granskad
Ingår i avhandling
1. Increasing Energy Efficiency in Electric Trains Operation: Driver Advisory Systems and Energy Storage
Öppna denna publikation i ny flik eller fönster >>Increasing Energy Efficiency in Electric Trains Operation: Driver Advisory Systems and Energy Storage
2018 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Electric traction is the most efficient traction system in the railway transportation. However, due to the expensive infrastructure and high power demand from the grid, the share of electric trains in the railway transportation is still lower than other trains. Two of the possible solutions to increase the share of electric trains are: optimal train operation to minimize energy consumption, the use of batteries as the energy source for driving electric trains on non-electrified lines. This thesis aims to extend the knowledge in the field of energy optimal operation of electric trains and battery-driven electric trains.

Energy optimal operation of electric trains is supervised using a driver advisory system (DAS), which instructs the driver to operate the train in an energy-efficient manner. This thesis contributes to DAS technology under two topics: the increase of energy efficiency and the design of DAS.

This thesis presents a complete procedure of designing a DAS from the mathematical formulation to application on the train. The designed DAS is in the form of an Android application and is based on a dynamic programming approach. The computational performance of the approach is enhanced using heuristic state reducing rules based on the physical constraints of the system. The application of the DAS shows a potential reduction of 28% in energy consumption.

This thesis considers the detailed energy losses in the whole propulsion system using a regression model that is generated from validated physical models. The application of the regression model instead of a previous constant efficiency factor model results in 2.3% reduction in energy consumption of the optimum speed profiles.

Based on the solution for the normal electric trains, a solution is also offered for the optimal operation of battery-driven electric trains, in which the characteristics of the battery as one of the main components are considered using an electrical model. The solution presented in this thesis, is to combine the popular single mass point train model with an electrical circuit battery model.

Furthermore, this thesis evaluates the performance of the optimization approaches and validates the models against the measurements from actual drives of a real-life battery train. The results show a potential of around 30% reduction in the charge consumption of the battery.

The results of this thesis (algorithms and the Android application) are provided as open source for further research in the field of energy efficient train control.

Ort, förlag, år, upplaga, sidor
Västerås: Mälardalen University, 2018
Serie
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 275
Nyckelord
Driver Advisory System, Catenary-free Operation, Electric Train, Electric Multiple Unit, Battery, Energy Efficiency, Energy Storage, Speed Profile Optimization
Nationell ämneskategori
Energiteknik
Forskningsämne
energi- och miljöteknik
Identifikatorer
urn:nbn:se:mdh:diva-41136 (URN)978-91-7485-409-1 (ISBN)
Disputation
2018-11-16, Pi, Mälardalens högskola, Västerås, 13:00 (Engelska)
Opponent
Handledare
Projekt
STREAM
Forskningsfinansiär
VINNOVA, 2014-04319VINNOVA, 2012-01277
Tillgänglig från: 2018-10-08 Skapad: 2018-10-06 Senast uppdaterad: 2018-10-16Bibliografiskt granskad

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Campillo, JavierBohlin, MarkusDahlquist, Erik

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