Circular economy implementation in railway systems beyond net zero

Predicting traction return current in electric railway systems through physics-informed neural networks

This paper addresses the problem of determining the distribution of the return current in electric railway traction systems. The dynamics of traction return current are simulated in all three space dimensions by informing the neural networks with the Partial Differential Equations (PDEs) known as telegraph equations. In addition, this work...

Design of Multi-Mode Linear Electric Machine for Charging and Propulsion of Vacuum Tube Train

This paper investigates a high speed vacuum tube train system relying on wheels for suspension and a multi-mode linear electric machine for charging and propulsion: the machine will be configured as a doubly fed induction machine for charging at stationary, and as a permanent magnet synchronous machine for acceleration and deceleration. The...

Dynamic Passenger Assignment for Major Railway Disruptions Considering Information Interventions

Passenger assignment models for major disruptions that require trains to be<br/>cancelled/short-turned in railway systems are rarely considered in literature, although these models could make a significant contribution to passenger-oriented disruption timetable design/rescheduling. This paper proposes a dynamic passenger assignment model, where...

Capacity optimization of industrial railway systems: a case study at Tata Steel IJmuiden

Industrial railway systems can be found within companies where the production and processing of goods require large quantities to be transported. These underdeveloped systems are often privately owned and are characterized by short to cover distances, many locations, inefficient layout due to historical expansion and bidirectional driving. Local...

Multi-Objective Performance Evaluation of the Detection of Catenary Support Components Using DCNNs

The goal of this paper is to evaluate from a multi-objective perspective the performance on the detection of catenary support components when using state-of-the-art deep convolutional neural networks (DCNNs). The detection of components is the first step towards a complete automatized monitoring system that will provide actual information about...

System-based Vulnerability Measures for Railway Systems

The issue of disruptions in railway systems attracts a growing attention due to its severity to the society. Mitigation strategies are proposed from different perspectives to reduce the system vulnerability resulting by disruptions. However, due to financial limitations, it is not realistic to realize all strategies in the real world. Thus, it...

Dynamic Passenger Assignment during Disruptions in Railway Systems

Passenger-oriented rescheduling problems receive increasing attention. However, the passenger assignment models used for evaluating the rescheduling solutions are usually simplified by many assumptions. To estimate passenger inconvenience more accurately, this paper establishes a dynamic passenger assignment model during disruptions, in which...

Fault diagnosis using spatial and temporal information with application to railway track circuits

Adequate fault diagnosis requires actual system data to discriminate between healthy behavior and various types of faulty behavior. Especially in large networks, it is often impracticable to monitor a large number of variables for each subsystem. This results in a need for fault diagnosis methods that can work with a limited set of monitoring...

Agent-based Multi-organizational Interaction Design: A Case Study of the Dutch Railway System

In multi-organizational alliances, inter- and intraorganizational interactions are performed in dynamic environments towards the cooperative goals. To adapt to such dynamics, not only should organizational design provide sufficient representation of organizational requirements, but also provide control mechanisms to switch between different...

On Track in Reducing Uncertainties: Exploration of the Value of the HAZOP Methodology as a Tool for Decision Makers at ProRail involved in Multi-Actor Decision Making

ProRail is the railway management company of the Netherlands. It is responsible for the construction, maintenance, management, and safety of the Dutch railway system. ProRail has as a goal an annual five per cent increase in the number of transported passengers up to 2020. This goal cannot be reached with the current way of transporting...

Deciding on Innovation at a Railway Network Operator: A Grounded Theory Approach

Innovation at a railway network operator depends on the decision-making processes in the daily work of operational professionals and staff. This paper is about innovative measures at a railway network operator, required to increase capacity on the railway network without investing in expensive infrastructural extensions. Using field observations...

Making tracks for Tamale: Strategic implementation of a railway system in the existing urban fabric of Ghanaian cities

Africa has the potential to be the world's breadbasket, however the continent's fundamental problem is that it has invested relatively little in agriculture and in developing its rural infrastructure. Ghana (West-Africa) is no exception to this. Ghana's Northern Region is identified as breadbasket area, but sufficient transportation lacks....

Radikale Trennung von Eisenbahninfrastruktur und -betrieb hemmt Wettbewerbs und Innovation