Search for dissertations about: "railway system"
Showing result 1 - 5 of 181 swedish dissertations containing the words railway system.
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1. Cybersecurity in Railway : A Framework for Improvement of Digital Asset Security
Abstract : Digitalisation changes operation and maintenance in railways. Emerging digital technologies facilitate implementation of enhanced eMaintenance solutions through utilisation of distributed computing and artificial intelligence. READ MORE
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2. Electromagnetic noise generated in the electrified railway propulsion system
Abstract : The electromagnetic compatibility (EMC) problem in the railway propulsion system is a significant safety issue of high concern. The problems can be caused by any part of the propulsion system as well as any combination of the sub systems. Simulation is a fast economical way to understand the system and to predict the EMC performance. READ MORE
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3. Railway Open System Tribology
Abstract : Tribology in the railway system is of increasing interest in the new railway era due to the demand for higher speed and load capacity. Since railway vehicles operate in an open environment, their performance depends greatly on temperature, humidity and natural and artificial contaminants. READ MORE
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4. High Frequency Model of Electrified Railway Propulsion System for EMC Analysis
Abstract : A model of the electrified railway propulsion system working in a wide frequency range is studied in this thesis. The high frequency modeling is the first stage to study and predict the Electromagnetic compatibility (EMC) problems in the electrified railway propulsion system, which are safety and reliability issues of high concern. READ MORE
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5. Reforming a publicly owned monopoly : costs and incentives in railway maintenance
Abstract : The railway system is often considered to be an industry where a monopoly occurs “naturally”, which can explain the public ownership and the use of regulations. However, railways in Europe have been subject to reforms during the last three decades. READ MORE