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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Die wirtschaftliche Eignung des elektrischen und dieselelektrischen Betriebes auf Vollbahnen auf Grund der Kriterien des Kapital-Ertrages und der Rentabilität

Fehr, Robert, January 1940 (has links)
Promotionsarbeit--Eidg. Tech. Hochschule, Zürich. / eContent provider-neutral record in process. Description based on print version record. "Literaturverzeichnis": p. 129-131.
2

The traffic problems of interurban electric railroads

Conway, Thomas, January 1900 (has links)
Thesis--University of Pennsylvania, 1908.
3

Die wirtschaftliche Eignung des elektrischen und dieselelektrischen Betriebes auf Vollbahnen auf Grund der Kriterien des Kapital-Ertrages und der Rentabilität

Fehr, Robert, January 1940 (has links)
Promotionsarbeit--Eidg. Tech. Hochschule, Zürich. / "Literaturverzeichnis": p. 129-131.
4

Probabilistic analysis of harmonics in railway traction system

Yuen, Kwok-hoo. January 2000 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 178-186).
5

Oscillations in rail vehicle traction drives analysis of electromechanics /

Winterling, Max Wolfgang, January 1900 (has links)
Thesis (doctor)--Technische Universiteit Delft, 1997. / Vita. Includes bibliographical references (p. [153]-162).
6

Oscillations in rail vehicle traction drives analysis of electromechanics /

Winterling, Max Wolfgang, January 1900 (has links)
Thesis (doctor)--Technische Universiteit Delft, 1997. / Vita. Includes bibliographical references (p. [153]-162).
7

A VSI-based power quality conditioner for 25kV electrified railway systems

Tan, Pee-Chin, 1975- January 2003 (has links)
Abstract not available
8

Applying the predictable maintenance approach to DC traction substations in South Africa

10 March 2010 (has links)
D. Ing. / This dissertation deals with the important issue of reliability management for 3kV DC Traction Substations used by the national railway company in South Africa. Maintenance is one of the critical and most costly phases in the lifecycle of any plant. It looks at the total life cycle of the equipment in a typical substation, but the focus in the latter chapters is on the maintenance. Through improved maintenance management, the reliability of the system can be improved. The approach to maintenance is addressed as a predictive strategy, avoiding even more costly nonproductive time due to downtime caused by failure or induced by maintenance. Condition monitoring and assessment is described as one of the effective tools in the maintenance engineer’s armoury to apply a predictive approach. A direct link between predictable maintenance and reliability is explored. In the definition of reliability, concepts such as time and expected performance can be linked to a predictable delivery of the designed function. In other words, if down time is expected and can be prepared for, it is more acceptable than the unexpected. In essence, the system is still reliable as it performs according to expectation. The concept of predictable maintenance can be applied wider than just the 3kV traction substation. The process of identifying critical equipment, to measure the condition and to take decisions based on the rate of change in the condition can be used in any maintenance environment, even outside electrical. The crucial ingredient to this is to understand that condition monitoring is not based on fixed values, but the rate at which these values change. This is called Fuzzy logic. Can we predict the future? If yes, how accurate will the predictions be?
9

Replacement policies for multiple component systems.

Suraweera, Alankarage Wedeha, January 1979 (has links)
Thesis--M. Phil., University of Hong Kong, 1979. / Xeorx copy of typescript.
10

Probabilistic analysis of harmonics in railway traction system

阮國豪, Yuen, Kwok-hoo. January 2000 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy

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