Search for dissertations about: "Railway network"

Showing result 21 - 25 of 59 swedish dissertations containing the words Railway network.

2. 21. Going from Lineside to In-cab Railway Signaling : Driveability Issues and Solutions

   Author : Tomas Rosberg; Oskar Fröidh; Thorslund Birgitta; Behzad Kordnejad; Birgit Milius; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ERTMS; ETCS; Driving behavior; signaling; Transportsystem; Transport Systems;

   Abstract : From many perspectives there is a need to understand more of how capacity, signal systems, anddriving behavior interact, and naturally since ERTMS is in its early stage, some areas are stillunexplored. The number of retrofitted ERTMS lines and new designed ERTMS lines are increasing inEurope, which implies extra focus on the capacity optimization in the network planning process. READ MORE

4. 22. Availability Analysis of Frequency Converters in Electrified Railway Systems

   Author : Yasser Ahmed Mahmood; Hoang Pham; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance Engineering;

   Abstract : The increased interest in electrified railways can be explained by their huge capacity, high efficiency, and low pollution. Today’s electrified railway is expecting higher demands for electric power for increased speeds, increased traffic volume capacity, and heavier freight loads. READ MORE

5. 23. Towards concurrent planning of railway maintenance and train services

   Author : Tomas Lidén; Jan Lundgren; Martin Joborn; Ann-Brith Strömberg; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : Efficiency in the public and freight transportation systems is of crucial importance for a society. Railways can offer high capacity and relatively low environmental impact, but require that several technical systems are tuned and operate well. READ MORE

6. 24. Towards optimal railway track utilization based on societal benefit

   Author : Victoria Svedberg; Aronsson Martin; Martin Joborn; Jan T. Lundgren; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : Infrastructure managers in railway systems are striving to have as efficient track utilization as possible. There are no unanimous interpretation of efficiency in terms of track utilization, but the aim of the Swedish Transport Administration is to allocate track capacity such that societal benefit is maximized. READ MORE

7. 25. Power Flow Analysis of the Swedish Railway Electrical System

   Author : Magnus Olofsson; Göran Andersson; Elkraftteknik KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

   Abstract : This thesis deals with analysis of the steady state power flow in the Swedish railway electrical system. Finding the steady state of the system means that all voltages and power flows in the system are known. The trains are supplied from the public grid using frequency converters. READ MORE