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Laska B.,Siemens AG | Steimer P.,ABB | Debruyne M.,Alstom | Cecchi L.,Trenitalia | And 4 more authors.
Proceedings of EPE-PEMC 2010 - 14th International Power Electronics and Motion Control Conference | Year: 2010

Auxiliary power supply systems for rolling stock are less standardized today due to railway specific products with low lot sizes, thus requiring specific system engineering effort and making maintenance and refurbishment difficult. An overview on a standardization initiative is given defining target supply systems for future trains with its essential system interfaces. © 2010 IEEE.

Carillo D.,Trenitalia | D'Ariano A.,Third University of Rome | Giacco G.L.,Trenitalia | Giacco G.L.,Third University of Rome | Pacciarelli D.,Third University of Rome
Ingegneria Ferroviaria | Year: 2014

This paper describes an optimization framework for rolling stock rostering and maintenance scheduling at a busy workshop. A new mixed-integer linear-programming formulation is provided for the maintenance scheduling problem faced by Trenitalia (train operating company) managers, with input data taken from the rolling stock rostering plan. The computational results are carried out on a Trenitalia's maintenance site located in Naples. The solutions computed via a commercial MILP solver are compared with practical solutions. A relevant cost reduction is possible by using the proposed framework, involving both rostering and maintenance scheduling. We also show how the proposed method can be used as an effective tool to absorb real-time timetable perturbations while respecting the agreed level of service.

The benefits of using Trenitalia's Tele-diagnostic system while operating and during maintenance of the E464 fleet are discussed. The introduction of the Tele-diagnostic system brings new set of tools that can be used to optimize the maintenance process, reduce diagnosis, and troubleshooting time and increase fleet availability by preventing malfunctions on operating rolling stock. Trenitalia has started a transition process from the concepts of corrective and preventive maintenance to more evolved concepts of condition-based and predictive maintenance due to the use of this system. The Tele-diagnostic system, developed by Bombardier on Trenitalia's specifications, is composed of a set of software modules which filter, process, aggregate and present diagnostic data, received from on-board systems rolling stock on a dedicated web portal.

Cheli F.,Polytechnic of Milan | Corradi R.,Polytechnic of Milan | Rocchi D.,Polytechnic of Milan | Tomasini G.,Polytechnic of Milan | Maestrini E.,Trenitalia
Journal of Wind Engineering and Industrial Aerodynamics | Year: 2010

The cross wind risk analysis is today, within the European railway operators, one of the most important items related to the safety problem. In order to define the risk associated with the cross wind along a railway line, the effect of the infrastructure scenario on the aerodynamic loads acting on a vehicle have to be investigated. A typical railway line is mainly characterized by two main types of scenario: viaduct and embankment. In this work, the aerodynamic coefficients of the ETR500 train, measured through wind tunnel tests, for the standard TSI infrastructure scenarios (flat ground with and without ballast and rail and 6. m-high embankment) and for a typical Italian viaduct are presented. Moreover, each infrastructure is characterized in terms of flow modification with and without train. A comparison between the experimental results obtained with the different scenarios allows to point out the effects of the infrastructure on the aerodynamic loads. © 2010 Elsevier Ltd.

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