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Communication Dans Un Congrès Année : 2022

Isolated Energy Storage System for DC Railway Electrification

Joseph Fabre
Philippe Ladoux
Hervé Caron
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  • PersonId : 1080535

Résumé

Nowadays, in several European Railway networks, the old DC electrification systems are reaching their limits. In some sectors, it is not possible to increase traffic or to operate locomotives at their nominal power rating. The implementation of Fixed Energy Storage Systems (FESS) can be an alternative solution to the creation of a new substation. On the one hand, the FESS limits the contact line voltage drop and, on the other hand, smooths the power absorbed during peak traffic. As a result, the efficiency of the power system can be increased while limiting costs and environmental impact. This paper proposes a new topology of FESS based on isolated DC/DC converters associated to lithium-ion batteries. The galvanic isolation offers a major advantage for operational safety. In the event of fault, the input and output terminals of the DC/DC converters are electrically separated and the contact line voltage can never be directly applied to the batteries. The first part of this paper presents the main characteristics of an elementary module of the FESS. The second part proposes a sizing methodology in a typical case of a line electrified at 1.5 kV DC and shows the limits of using a FESS to reinforce the power supply.
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Dates et versions

hal-03694861 , version 1 (14-06-2022)

Identifiants

  • HAL Id : hal-03694861 , version 1

Citer

Joseph Fabre, Philippe Ladoux, Hervé Caron, Tony Letrouvé. Isolated Energy Storage System for DC Railway Electrification. WCRR2022 (World Congress on Railway Research 2022), Jun 2022, Birmingham, United Kingdom. pp.6. ⟨hal-03694861⟩
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