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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.
21

Modeling, prediction and mitigation of power distribution system voltage distortion caused by nonlinear loads

Wang, Yen-Ju, January 2000 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Typescript. Vita. Includes bibliographical references (leaves 106-111). Also available on the Internet.
22

Bearing damage detection via wavelet packet decomposition of stator current /

Eren, Levent, January 2002 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2002. / Typescript. Vita. Includes bibliographical references (leaves 96-99). Also available on the Internet.
23

Bearing damage detection via wavelet packet decomposition of stator current

Eren, Levent, January 2002 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2002. / Typescript. Vita. Includes bibliographical references (leaves 96-99). Also available on the Internet.
24

Controlling laser high-order harmonic generation using weak counter-propagating light /

Voronov, Sergei Leonidovich, January 2003 (has links) (PDF)
Thesis (Ph. D.)--Brigham Young University. Dept. of Physics and Astronomy, 2003. / Includes bibliographical references (p. 127-137).
25

Multi-function monitoring system for harmonic and transient study of power networks

陳偉樂, Chan, Wai-lok. January 1992 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy
26

The impact of network changes on power quality and compensation device perfomance.

Ngcamu, Mbulelo Busani Edmund. January 2012 (has links)
This dissertation describes the impact of changing network configuration on power quality and performance of existing compensation devices in the transmission network. The underlying theory was assessed and thereafter the Everest substation network case scenario was selected to study the above due to; the number of reconfigurations it has experienced in the past, increased capacitor bank failures and also due to the harmonics problems experienced. The study involved the installation of harmonic current measuring instruments at Everest 132kV feeders to identify the potential sources of harmonics and to determine the dominant harmonics. A dig Silent Power Factory model was then constructed to perform various simulations in order to determine the impact of the changes done on the Everest network as well as the impact of capacitor switching on the harmonics amplification at Everest 132kV Bus-bars. The study also focussed on analysing the performance history of the capacitor banks at Everest and to determine if high harmonic amplification had an impact on capacitor bank performance. The simulation results revealed that network reconfigurations have negatively impacted power quality at Everest. The results showed that there is also a correlation between the switching of the two 72MVAR capacitor banks and the amplification of the harmonics at Everest. The highest amplification occurred when both capacitor banks were switched in and the resonance point occurred around the 5th harmonic which coincided with the data from field measurements. There was a 61% increase in 5th harmonic impedance amplitude after the Everest network was reconfigured, for the condition when both capacitors are switched in. The lowest amplification occurred when none of the capacitor banks were switched in. Three options were assessed to eliminate the problem of harmonics at Everest, the first one was to prohibit the switching in of both capacitors at Everest and utilise other available means around the Everest network for voltage support. The second option was to change the capacitor size, thus moving the resonance point away from the 5th harmonic. The last option was to install a harmonic filter at Everest to filter out the problematic harmonics. The first option is recommended as it has been successfully tested, can be readily implemented and is much more cost effective compared to the others. / Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2012.
27

On-line digital signal processing methods for the correction of errors in high voltage power waveform measurements

Hamrita, Takoi K. 12 1900 (has links)
No description available.
28

Programmed harmonic reduction in single phase and three phase voltage-source inverters

Kumar, Rajiv. January 1996 (has links)
Thesis (M.S.)--Ohio University, August, 1996. / Title from PDF t.p.
29

Accurate method to measure harmonics and interharmonics in shipboard power quality analysis

Kondabathini, Anil Kumar, January 2006 (has links)
Thesis (M.S.) -- Mississippi State University. Department of Electrical and Computer Engineering. / Title from title screen. Includes bibliographical references.
30

Harmonic impedance and harmonic source determination based on field measurements

Nino Hernandez, Edwin Enrique. January 2010 (has links)
Thesis (M.Sc.)--University of Alberta, 2010. / Title from PDF file main screen (viewed on Apr. 13, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science, Department of Electrical & Computer Engineering, University of Alberta. Includes bibliographical references.

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