University of Twente Student Theses
Feasibility of EMS and Hybrid Energy Storage in Regenerative Railway Systems
Cuesta, Emilio Jose (2025) Feasibility of EMS and Hybrid Energy Storage in Regenerative Railway Systems.
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| Abstract: | This paper investigates the design and feasibility of an energy management system (EMS) for railway applications that integrates regenerative braking energy (RBE), photovoltaic (PV) generation, and hybrid energy storage systems (HESS) comprising a battery and a supercapacitor (SC). The objective is to test the performance of the HESS along with RBE and analyze its feasibility for implementation, as the combination of these technologies are assured to reduce grid dependency and operating cost as a result. Using a modified AC microgrid model that emulates a DC microgrid, simulations were conducted to evaluate four scenarios: a base case, PV-only, PV with battery storage, and a combination of PV, battery, and SC. Key performance indicators (KPIs) such as energy consumption, daily operational cost, and CO2 emissions were assessed for both clear and cloudy days. Results demonstrate that incorporating PV and hybrid ESS significantly reduces grid dependency, operational costs, and CO2 emissions. The full integration of PV, battery, and SC achieved the highest energy savings and environmental benefits. The combination of PV and battery achieved a 93% reduction in grid energy consumption on clear days, while adding an SC further reduced consumption by up to 98%. CO2 emissions dropped proportionally, with the full integration scenario emitting only 0.735 tons per day on clear days compared to 33.45 tons in the base case. This study demonstrates the potential of hybrid renewable energy systems to enhance energy efficiency and sustainability in railway operations, while identifying cost barriers that future technological advancements and subsidies could address. |
| Item Type: | Essay (Bachelor) |
| Faculty: | EEMCS: Electrical Engineering, Mathematics and Computer Science |
| Subject: | 43 environmental science, 53 electrotechnology |
| Programme: | Electrical Engineering BSc (56953) |
| Link to this item: | https://purl.utwente.nl/essays/105152 |
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