Search for dissertations about: "electrified railway"

Showing result 1 - 5 of 13 swedish dissertations containing the words electrified railway.

  1. 1. Electromagnetic noise generated in the electrified railway propulsion system

    Author : Kelin Jia; Rajeev Thottappillil; Hans Bängtsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electromagnetic compatibility; railway; propulsion system; shielded cable; transmission line; Electrical engineering; Elektroteknik; Telecommunication; Telekommunikation; SRA - Transport; SRA - Transport;

    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

  2. 2. High Frequency Model of Electrified Railway Propulsion System for EMC Analysis

    Author : Kelin Jia; Rajeev Thottappillil; Hans Bängtsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electromagnetic compatibility; railway; propulsion system; multitransmission line; ac motor modeling; vector fitting; fast transient;

    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

  3. 3. Electromagnetic Interference in Modern Electrified Railway Systems with Emphasis on Pantograph Arcing

    Author : Surajit Midya; Rajeev Thottappillil; Uppsala University; []
    Keywords : Railway EMC;

    Abstract : .... READ MORE

  4. 4. Electromagnetic Interference to Electrified Railway Network Caused by Lightning: Development of Computation Models

    Author : Nelson Theethayi; Rajeev Thottappillil; Uppsala universitet; []
    Keywords : Railway EMC; Lightning;

    Abstract : .... READ MORE

  5. 5. 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