Tram simulation model for energy balance analyses

Hubka, Lukáš; Skolnik, Petr

doi:10.1109/pc.2017.7976221

Cited by 7 publications

(2 citation statements)

References 9 publications

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“…The computation must be continuously performed either in batch operation when simulating the strategy on a PC, or with dedicated hardware when operating onboard. As above mentioned, a driving style suitable to allow coasting cannot be adopted by the driver, without the aid of automatic calculations embedded in the control system [20]. In addition, the automatic calculation system is essential to optimize the operation while following the rules established by railway signals [21] and to find the best compromise between energy saving and services offered to passengers, always respecting the timetable.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Energy Savings in Electric Railways Using Coasting Technique

et al. 2021

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The main goal of this work is the evaluation of the energy saving achievable in railway drive when using the coasting technique extensively, with reference to a practical case of the Italian railway network taken as an example. This technique consists in exploiting the kinetic energy accumulated by the running train whenever possible. To implement a driving style on purpose, the only driver contribution is not enough; indeed, it is necessary to provide an embedded automatic calculation control system. In the paper, an algorithm has been developed to evaluate the energy absorption of railway locomotives during the normal service and validated on a real railway line. The proposed hardware and software system could be implemented aboard the train, allowing motion data processing in real-time. Speed, time intervals and power absorption for a given path are calculated; then, the best coasting parameters are estimated to maximize the energy savings. In particular, the case study presented in the paper showed that the fast-run strategy, always adopted by the railway company to recover an unexpected delay, can lead to a negligible time recovery with respect to the coasting strategy, while determining a significantly larger energy consumption.

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Section: Introductionmentioning

confidence: 99%

Improvement of Energy Savings in Electric Railways Using Coasting Technique

et al. 2021

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“…Research on improving the energy efficiency of public electric transport, such as trolleybuses, might not always be possible using real vehicles as they might be unavailable, for example. Therefore, the use of virtual computer models can be an alternative [1], [2]. The application of energy storage systems (ESS) in public electric transport has so far been the subject of both studies based on practical experiments using real vehicles [3], [4], [5] and studies with computer simulation models of electric transport vehicles and ESS [6], [7].…”

Section: Introductionmentioning

confidence: 99%

Modelling of Electric Transport Overhead DC Lines for Mobile Energy Storage System Optimization

Staņa

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The Doctoral Thesis is devoted to the study of a solution for improving the energy efficiency of electric public transport by using mobile supercapacitor-based energy storage systems. The modelling variants of electric transport overhead DC lines for the simulation of total energy consumption are analysed. It was found that the additional mass of a mobile energy storage system does not increase the energy consumption of the electric transport by more than 5 %, while the possibility of storing the energy recovered during braking reduces the total energy consumption from the supply substation by up to 40 %. A method for the design of a mobile energy storage system is described, considering the amount of energy to be recovered and the progressive deterioration of the supercapacitor cell parameters. It is found that the cost of energy saved during the lifetime of the supercapacitors is significantly higher than their cost of purchasing and installing, especially at higher electricity prices.

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