Search for dissertations about: "electric railway"
Showing result 1 - 5 of 17 swedish dissertations containing the words electric railway.
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1. Increasing Energy Efficiency in Electric Trains Operation : Driver Advisory Systems and Energy Storage
Abstract : Electric traction is the most efficient traction system in the railway transportation. However, due to the expensive infrastructure and high power demand from the grid, the share of electric trains in the railway transportation is still lower than other trains. READ MORE
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2. On Design of a Compact Primary Switched Conversion System for Electric Railway Propulsion
Abstract : In this thesis, a compact and light primary switched conversion system for AC-fed railway propulsion is investigated. It is characterized by soft switching of all converter stages and a source commutated primary converter comprising series connected valves. READ MORE
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3. EMC in railway systems : measurements, modeling and analysis
Abstract : The subject of this study and resulting thesis was to investigate the electromagnetic compatibility (EMC) problems in the multi-electrical signaling circuitry along a railway track. These signaling systems have been expanding over time from buried multi-wired electrical copper cables to optical fiber cables, sometimes located parallel to the contact line in the catenaries. READ MORE
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4. Energy Optimal Operation of Electric Trains : Development of a Driver Advisory System
Abstract : The electric traction system used in trains is the most energy efficient traction system in the transportation sector. Moreover, it has the least NOx and CO2 emissions in comparison to other transportation systems (e.g. busses, passenger cars, airplanes, etc. READ MORE
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5. Applications of Unsupervised Deep Learning for Analysing Time-Varying Power Quality Big Data
Abstract : Continuous power quality monitoring allows grid stakeholders to obtain information about the performance of the network and costumer facilities. Moreover, the analysis of continuous monitoring allows researchers to obtain knowledge on power quality phenomena. Power quality measurements result in a large amount of data. READ MORE