Model-based comparison of hybrid propulsion systems for railway diesel multiple units

Sebastian Schmid, Kambiz Ebrahimi, Antonios Pezouvanis and Walter Commerell

International Journal of Rail Transportation, 2018, vol. 6, issue 1, 16-37

Abstract: In order to reduce operating costs, railway vehicle operators need to find technical solutions to improve the efficiency of railway diesel multiple units on non-electrified railway routes. This can be achieved by hybridization of diesel multiple unit propulsion systems with electrical energy storage systems to enable brake energy recuperation. After highlighting the state of the art of hybrid railway vehicles and electrical energy storage systems, a simulation model of a generic diesel multiple unit in a 3-car formation is developed and equipped with three types of hybrid power transmissions. Simulations on realistic service profiles with different driving strategies show the potential for fuel consumption reduction for the different transmission types. On a suburban service profile, a 3-car diesel multiple unit is able to achieve simulated fuel savings of up to 24.1% and up to 18.9% on a regional service profile.

Date: 2018
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DOI: 10.1080/23248378.2017.1390790

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International Journal of Rail Transportation is currently edited by Wanming Zhai and Kelvin C. P. Wang

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