Design of Hybrid Energy System for Railway Application (Case Study of People Mover System in Doha, Qatar)

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Sri Nugroho
Luthfi Muhammad Mauludin
Togar Sirait
mujiman mujiman
Ahmad Sofyan
Toto Tohir


Hybrid energy system, Traction batteries, Double-layer capacitor, Cooling system, People mover system


This paper presents the conceptual design of hybrid energy system used in railway application. The hybrid system with batteries and energy storage double-layer capacitor is a new technology that is used under extreme climatic conditions, especially in daytime temperature up to 50°C, high relative humidity, dust and heavy rain. It is a combination of double-layer capacitors and traction batteries. It draws power both externally and from braking energy. In order to reduce CO2 emissions to the environment, energy-saving drives and energy storage are used. Also, in public transportation, Sitras Hybrid Energy System (HES), hybrid energy storage system for trams, has been developed which combines a double-layer capacitor with a nickel-metal hydride battery. The storage not only allows driving without overhead lines, it also enables braking energy to be recovered. A reliable cooling system is required to ensure that the performance of the battery and the capacitor storage is maintained for as long as possible. The results of finite element model showed the robustness for railway application. The computational model refers to proof of static and dynamic strength in accordance with EN12663. A cooling system for a tram using this innovative technology was designed and qualified for the "Qatar Education City People Mover System (PMS)" project.


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Mobility. Available Online: (accessed on July 15, 2022).
[2] UN. Paris Agreement, Paris. 2015. Available online: (accessed on July 15, 2022).
[3] Bai, S.; Liu, C. Overview of energy harvesting and emission reduction technologies in hybrid electric vehicles. Renew. Sustain. Energy Rev. 2021, 147, 111188.
[4] Fuhs, A. Hybrid Vehicles, 1st ed.; CRC Press: Boca Raton, FL, USA, 2008.
[5] Doucette, T.T.; McCulloch, M.D. Modeling the prospects of plug-in hybrid electric vehicles to reduce CO2 emissions. Appl. Energy 2011, 88, 2315–2323.
[6] INSIDEEVs. Meet Audi’s Plug-In Hybrid Locomotive. Available online: (accessed on July 15, 2022).
[7] Masatsuki, I. Development of the Battery Charging System for the New Hybrid Train that Combines Feeder Line and the Storage Battery. In Proceedings of the 2010 International Power Electronics Conference—ECCE ASIA, Sapporo, Japan, 21–24 June 2010; pp. 3128–3135.
[8] Hirose, H.; Yoshida, K.; Shibanuma, K. Development of catenary and storage battery hybrid train system. In Proceedings of the 2012 Electrical Systems for Aircraft, Railway and Ship Propulsion, Bologna, Italy, 16–18 October 2012; pp. 1–4.
[9] Mwambeleko, J.J.; Kulworawanichpong, T. Battery electric multiple units to replace diesel commuter trains serving short and idle routes. J. Energy Storage 2017, 11, 7–15.
[10] Mauludin, L. M., Zhuang, X., & Rabczuk, T. Computational modeling of fracture in encapsulation-based self-healing concrete using cohesive elements. Composite Structures, 2018, 196, 63-75.
[11] Mauludin, L. M., & Oucif, C. The effects of interfacial strength on fractured microcapsule. Frontiers of Structural and Civil Engineering, 2018, 1-11.
[12] Mauludin, L. M., & Oucif, C. Interaction between matrix crack and circular capsule under uniaxial tension in encapsulation-based self-healing concrete. Underground Space, 2018, 3(3), 181-189.
[13] Kapetanovi´c, M.; Núñez, A.; van Oort, N.; Goverde, R.M.P. Reducing fuel consumption and related emissions through optimal sizing of energy storage systems for diesel-electric trains. Appl. Energy 2021, 294, 117018.
[14] Sorrentino, M.; Serge Agbli, K.; Hissel, D.; Chauvet, F.; Letrouve, T. Application of dynamic programming to optimal energy management of grid-independent hybrid railcars. Proc. Inst. Mech. Eng. Part F J. Rail Rapid Transit 2021, 235, 236–247.
[15] Ogawa, T.; Yoshihara, H.; Wakao, S.; Kondo, K.; Kondo, M. Energy consumption analysis of FC-EDLC hybrid railway vehicle by dynamic programming. In Proceedings of the European Conference on Power Electronics and Applications, Aalborg, Denamrk, 2–5 September 2007; pp. 1–8.