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Relevant bibliographies by topics / Electrical source analysis / Dissertations / Theses

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Dissertations / Theses on the topic 'Electrical source analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Gursoy, Ekrem Niebur Dagmar. "Independent component analysis for harmonic source identification in electric power systems /." Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/1781.

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2

Homer, Hannah S. "Stability Analysis of Negative Resistance-Based Source Combining Power Amplifiers." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1466.

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An investigation into the stability of negative resistance-based source combining power amplifiers is conducted in this thesis. Two different negative resistance-based source combining topologies, a series and parallel version, are considered. Stability is analyzed using a simple and intuitive broadband approach that leverages linear circuit stability criterion and two different linearization methods: linearization around the operating point and in the frequency domain. Using this strategy, it is shown that conditions for self-sustained oscillation exist for both topologies. For the series com

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3

Shah, Shahil. "Small and Large Signal Impedance Modeling for Stability Analysis of Grid-connected Voltage Source Converters." Thesis, Rensselaer Polytechnic Institute, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10786614.

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<p> Interactions between grid-connected converters and the networks at their terminals have resulted in stability and resonance problems in converter-based power systems, particularly in applications ranging from wind and PV farms to electric traction and HVDC transmission networks. Impedance-based modeling and analysis methods have found wide acceptance for the evaluation of these resonance problems. </p><p> This thesis presents small and large signal impedance modeling of grid-connected single and three phase voltage source converters (VSC) to enable the analysis of resonance conditions in

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4

Renjit, Ajit Anbiah. "MODELING, ANALYSIS AND CONTROL OF MIXED SOURCE MICROGRID." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1450770774.

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5

Xu, Ling. "Modeling, Analysis and Control of Voltage-Source Converter in Microgrids and HVDC." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4967.

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The objective of this dissertation is to carry out dynamic modeling, analysis and control for Voltage-Source Converters (VSC). Two major applications of VSC will be investigated in this dissertation: microgrid application and High Voltage Direct Current (HVDC) application. In microgrid applications, VSC is used to integrate distributed energy sources such as battery and provide system functions: such as real and reactive power regulation, voltage and frequency support during islanding condition, and abnormal system condition mitigation. In HVDC applications, VSC is used to interconnect dc syst

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6

Kathi, Lokesh. "Steady-State Analysis of PWM Z-Bridge Source DC-DC Converter." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1453223069.

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7

Ho, Benjamin 1978. "The portability of open source : b a structural analysis of the modularity of the Apache web server." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86463.

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Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.<br>Includes bibliographical references (leaf 44).<br>by Benjamin Ho.<br>S.B.and M.Eng.

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8

Nalavolu, Praveen Reddy. "PERFORMANCE ANALYSIS OF SRCP IMAGE BASED SOUND SOURCE DETECTION ALGORITHMS." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_theses/50.

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Steered Response Power based algorithms are widely used for finding sound source location using microphone array systems. SRCP-PHAT is one such algorithm that has a robust performance under noisy and reverberant conditions. The algorithm creates a likelihood function over the field of view. This thesis employs image processing methods on SRCP-PHAT images, to exploit the difference in power levels and pixel patterns to discriminate between sound source and background pixels. Hough Transform based ellipse detection is used to identify the sound source locations by finding the centers of elliptic

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9

Resch, Kevin (Kevin Scott). "An analysis of incentive strategies for single-source suppliers to drive cost reduction." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66053.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; in conjunction with the Leaders for Global Operations Program at MIT, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 54-55).<br>An organization's decision on which aspects of its operations to outsource represents a key, strategic issue that should be based on maximizing performance throughout the entire value chain. In certain instances strategic outsourcing decis

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10

Namburi, Krishna Mohan Pavan Kumar. "A Novel Dithering Algorithm to Reduce Electro Magnetic Interference in Voltage Source Inverters." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1342106230.

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11

Alskran, Faleh A. "Dynamic modeling and analysis of the three-phase voltage source inverter under stand-alone and grid-tied modes." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18220.

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Master of Science<br>Department of Electrical and Computer Engineering<br>Behrooz Mirafzal<br>Increasing energy demand, rising oil prices, and environmental concerns have forced attention to alternative energy sources that are environmentally friendly and independent of fossil fuels. Renewable energy sources (RES) have become an attractive alternative to the traditional energy sources for electric power generation. However, one of the main challenges of RES adaption arises when connecting RES to the electric grid. Voltage source inverters (VSIs), typically, connect RES to the electric grid. Si

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12

Diab, Ahmad. "Study of the nonlinear properties and propagation characteristics of the uterine electrical activity during pregnancy and labor." Thesis, Compiègne, 2014. http://www.theses.fr/2014COMP2140/document.

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L'EMG utérin appelé Electrohystérogramme (EHG) a été exploité depuis longtemps par ses caractéristiques temporelles, fréquentielles, et temps-fréquence, pour la prédiction de l'accouchement prématuré, tandis que l'étude de sa propagation est rare. Tous les résultats des études antérieures n'ont pas montré un potentiel satisfaisant pour une application clinique. L'objectif de cette thèse est l'analyse de la propagation ainsi que de la non-linéarité des signaux EHG pendant la grossesse et le travail en vue d'une application clinique. Une analyse monovariée a été faite pour étudier la non-linéari

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13

Ruan, Wenbo. "Energy survey on replacing a direct electrical heating system with an alternative heating system." Thesis, Högskolan i Gävle, Energisystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-26915.

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With the ever-growing energy demand that world is currently going through and the danger of climate change around the corner, wagering in renewable energy seems to be the right path to create a more smart and green future. Sweden has put great effort on decreasing its dependency on oil, in fact in 2012 more than 50 % of its electricity came from the renewable source and has a plan in making it 100 % in 2040. However, when it comes to heating systems Sweden depends greatly on district heating, and situations which buildings are located outside the district heating system’s reach is not uncommon

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14

Kim, Youngchel. "On a Uniform Geometrical Theory of Diffraction based Complex Source Beam Diffraction by a Curved Wedge with Applications to Reflector Antenna Analysis." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1249419187.

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15

Vadali, Venkata Akshay Bhargav Krishna. "A Comparative Study of Signal Processing Methods for Fetal Phonocardiography Analysis." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7373.

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More than one million fetal deaths occur in the United States every year [1]. Monitoring the long-term heart rate variability provides a great amount of information about the fetal health condition which requires continuous monitoring of the fetal heart rate. All the existing technologies have either complex instrumentation or need a trained professional at all times or both. The existing technologies are proven to be impractical for continuous monitoring [2]. Hence, there is an increased interest towards noninvasive, continuous monitoring, and less

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MUBEEN, SAAD. "EVALUATION OF SOURCE ROUTING FOR MESH TOPOLOGY NETWORK ON CHIP PLATFORMS." Thesis, Jönköping University, JTH, Computer and Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-9591.

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<p>Network on Chip is a scalable and flexible communication infrastructure for the design of core based System on Chip. Communication performance of a NoC depends heavily on the routing algorithm. Deterministic and adaptive distributed routing algorithms have been advocated in all the current NoC architectural proposals. In this thesis we make a case for the use of source routing for NoCs, especially for regular topologies like mesh. The advantages of source routing include in-order packet delivery; faster and simpler router design; and possibility of mixing non-minimal paths in a mainly minim

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17

Satheeskumar, Aravind. "Open Source Model of the Nordic Power System for EU Project Spine." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286815.

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Decision problems in operation and planning of power systems often rely on large-scale models and data sets. Lack of historical power flow data due to regulatory restrictions often limits researchers to study the system with aggregated network models. Aggregated data from the electricity market operators (Nordpool in the Nordics) and the Transmission System Operator (TSO) (from ENTSO-E) are openly available, and can be used to study the power flow and exchanges between different regions but do not directly provide information about intra-region flows. This project builds upon the Nordic 490 sy

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18

Wahid, Ferdus. "Analysis Of A Wave Power System With Passive And Active Rectification." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-425722.

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Wave energy converter (WEC) harnesses energy from the ocean to produce electrical power. The electrical power produced by the WEC is fluctuating and is not maximized as well, due to the varying ocean conditions. As a consequence, without any intermediate power conversion stage, the output power from the WEC can not be fed into the grid. To feed WEC output power into the grid, a two-stage power conversion topology is used, where the WEC output power is first converted into DCpower through rectification, and then a DC-AC converter (inverter) is used to supply AC power into the grid. The main mot

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19

Unnikrishnan, Harikrishnan. "AUDIO SCENE SEGEMENTATION USING A MICROPHONE ARRAY AND AUDITORY FEATURES." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_theses/622.

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Auditory stream denotes the abstract effect a source creates in the mind of the listener. An auditory scene consists of many streams, which the listener uses to analyze and understand the environment. Computer analyses that attempt to mimic human analysis of a scene must first perform Audio Scene Segmentation (ASS). ASS find applications in surveillance, automatic speech recognition and human computer interfaces. Microphone arrays can be employed for extracting streams corresponding to spatially separated sources. However, when a source moves to a new location during a period of silence, such

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20

Brady, James Michael. "Real-Time Beamformer Development and Analysis of Weak Signal Detection with Interference Mitigation for Phased-Array Feed Radio Astronomy." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/5644.

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In recent years, the Brigham Young University (BYU) Radio Astronomy Systems group has developed phased-array feeds and the data acquisition processing systems necessary to perform radio astronomy observations. This thesis describes the development and testing of a real-time digital beamforming system that reduces both the time required to process phased-array feed data and the disk space used to record this data compared to post-processing beamforming systems. A real-data experiment is also discussed in this thesis, which focuses on some of the data post-processing required for one of BYU's da

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21

Jimenez, Saldana Cristhian Carim. "Large Scale Analysis of Massive Deployment of Converter-based Generation equipped with Grid- forming Strategies." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-292690.

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To mitigate the carbon footprint and the need to fulfil the energy goals in terms of sustainability, it is required to deploy a large integration of green energies. Therefore, in the previous and the coming years, there will be a high research and technological interest in the high penetration of converter-based generation. With the replacement and integration of power converters into the bulk power grid, new challenges and issues must be faced to maintain the system´s stability and reliability in terms of procedures for the transmission system operators. The main objective of this thesis proj

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22

Krupenia, Stas Simon. "An event related potential (ERP) study of symptomatic and asymptomatic adults with attention deficit hyperactivity disorder (ADHD)." University of Western Australia. School of Psychology, 2003. http://theses.library.uwa.edu.au/adt-WU2003.0035.

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This study recorded Event Related Potentials (ERPs) during completion of a Continuous Performance Task (CPT) in order to identify the contribution of response inhibition, working memory, and response monitoring to the pattern of hyperactive and impulsive and inattentive behaviour observed in patients with Attention Deficit Hyperactive Disorder (ADHD). Four ERP components, Nogo N2, Nogo P3, Go P3, and the ERN were examined and compared using a symptomatic and asymptomatic ADHD sample, and a healthy control group. The Nogo N2 had the expected frontal scalp distribution and was affected by change

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23

Fischer, de Toledo Paulo. "Modelling and control of a line-commutated HVDC transmission system interacting with a VSC STATCOM." Doctoral thesis, KTH, Elektriska maskiner och effektelektronik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4492.

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The interaction of an HVDC converter with the connected power system is of complex nature. An accurate model of the converter is required to study these interactions. The use of analytical small-signal converter models provides useful insight and understanding of the interaction of the HVDC system and the connected system components. In this thesis analytical models of the HVDC converters are developed in the frequency-domain by calculating different transfer functions for small superimposed oscillations of voltage, current, and control signals. The objective is to study the dynamic proprietie

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Jarushi, Ali Milad. "Analysis and modelling of energy source combinations for electric vehicles." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/analysis-and-modelling-of-energy-source-combinations-for-electric-vehicles(3674cf1a-b471-492f-8f6d-a3afb1039998).html.

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The objective of this research is to develop suitable models to simulate and analyse Electrical Vehicle (EV) power-trains to identify and improve some of the deficiencies of EVs and investigate new system architectures. Although some electro-chemical batteries improvements have lately been achieved in specific-energy, the power density is still low. Therefore, an efficient, cost-effective and high power density support unit could facilitate EV competitiveness compared to conventional internal combustion engine powered vehicles in the near future. The Na-Ni-Cl2, or ZEBRA battery as it is most c

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Chetlur, Adithya Prashanth. "A Novel Framework to Determine Physiological Signals From Blood Flow Dynamics." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7610.

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Centers for Disease Control and Prevention (CDC) estimate that more than 11.2 million people require critical and emergency care in the United States per year. Optimizing and improving patient morbidity and mortality outcomes are the primary objectives of monitoring in critical and emergency care. Patients in need of critical or emergency care in general are at a risk of single or multiple organ failures occurring due to a traumatic injury, a surgical event, or an underlying pathology that results in severe patient hemodynamic instability. Hence, continuous monitoring of fundamental cardiovas

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Bobrowski, Christoph. "Quellenlokalisation laserevozierter zerebraler Potentiale durch die Brain-electric-source-Analysis (BESA)." [S.l.] : [s.n.], 1998. http://www.sub.uni-hamburg.de/disse/177/index.htm.

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27

Savas, Zafer. "Real-time Detection And Tracking Of Human Eyes In Video Sequences." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606459/index.pdf.

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Robust, non-intrusive human eye detection problem has been a fundamental and challenging problem for computer vision area. Not only it is a problem of its own, it can be used to ease the problem of finding the locations of other facial features for recognition tasks and human-computer interaction purposes as well. Many previous works have the capability of determining the locations of the human eyes but the main task in this thesis is not only a vision system with eye detection capability<br>Our aim is to design a real-time, robust, scale-invariant eye tracker system with human eye movement in

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Afroozi, Milani Mohammad. "Non-linear analysis of optical and microwave sources." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6675/.

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Due to the ever increasing need for better and more capable communication systems, a large quantity of research is focused on the design and simulation of different sections of communication systems including the communication sources. Due to the massive cost of the fabrication involved in designing new communication sources, the accurate modelling and design of these sources using Computer Aided Design is of great interest. In this thesis fundamentals of laser modelling and nonlinear microwave antenna design; followed by reviewing the most important works carried out by other researchers in t

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Dailey, R. Gordon Jr. "An analysis of renewable energy technologies for electric utilities in Georgia." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/28922.

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30

Malkowski, Susan Kate. "MAGNETIC SHIELDING STUDIES FOR THE NEUTRON ELECTRIC DIPOLE MOMENT EXPERIMENT AT THE SPALLATION NEUTRON SOURCE." UKnowledge, 2011. http://uknowledge.uky.edu/physastron_etds/1.

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The neutron Electric Dipole Moment Experiment at the Spallation Neutron Source requires an overall magnetic shielding factor of order 105 to attenuate external background magnetic fields. At present, the shielding design includes an external (room-temperature) multi-layer μ-metal magnetic shield, a cryogenic (4 Kelvin) Pb superconducting shield, and a cryogenic (4 Kelvin) ferromagnetic shield composed of Metglas ribbon. This research determined how to construct a Metglas shield using minimal material that produced axial and transverse shielding factors of ~267 and ~1500. In addition, the μ-met

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31

Falk, Lissel Linus. "Pass-by noise contribution analysis of electric vehicles." Thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-159271.

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In the modern urban lifestyle, more and more people are exposed to noise pollution in form of traffic noise. As a response to this, the automotive OEMs (Original Equipment Manufacturer) are put under pressure to reduce the emitted noise from vehicles. To be able to meet the upcoming, stricter regulations, the automotive OEMs seeks new techniques to be able to front load the pass-by noise engineering in the vehicle development process and to identify and understand the different sources that contributes to the exterior noise.Earlier exterior sources ranking using ASQ (Airborn Source Quantificat

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32

Mittal, Shawn. "Computational Analysis and Design of the Electrothermal Energetic Plasma Source Concept." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/52705.

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Electrothermal (ET) Plasma Technology has been used for many decades in a wide variety of scientific and industrial applications. Due to its numerous applications and configurations, ET plasma sources can be used in everything from small scale space propulsion thrusters to large scale material deposition systems for use in a manufacturing setting. The sheer number of different types of ET sources means that there is always additional scientific research and characterization studies that can be done to either explore new concepts or improve existing designs. The focus of this work is to explor

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33

Ghanian, Nariman, Esfahani William Mohammad Farhang, and Muhammad Touqeer Ul Hassan. "Electrical energy analysis in nine countries of Europe, with focus on wind power and other renewable energy sources." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-689.

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This thesis has been written for the Bachelor degree in Electrical Engineering held at Blekinge Tekniska Högskola Karlskrona, Sweden. The basis of this thesis is a statistical analysis of the electrical energy situation with emphasis on contribution of wind power and other renewable energy in electricity production in the European area and key countries. The main parameters, which considered in this thesis are electricity production and consumption, installed capacity trends and also the operation of renewable sources, especially wind power in gross electricity generation. Meanwhile, the who

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Scholes, Richard Burton 1968. "Analysis of derivative MUSIC with two correlated or uncorrelated sources and its extension to a planar array." Thesis, The University of Arizona, 1996. http://hdl.handle.net/10150/278617.

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This thesis presents a novel spatial spectrum estimation technique, ∂-MUSIC, for discriminating between two closely spaced sources which are highly correlated. The ∂-MUSIC algorithm is tested, modified, and compared to the MUSIC algorithm using a point source simulation. Various power levels, samples sizes and angle separations are used on a linear and a planar array for correlated and uncorrelated sources. The algorithm is found to be relatively insensitive to correlation and can separate targets to one-half of the angular separation threshold of ∂-MUSIC. The ∂-MUSIC algorithm is tested using

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Xu, Yang. "Performance Analysis of Point Source Model with Coincident Phase Centers in FDTD." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-theses/214.

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The Finite Difference Time Domain (FDTD) Method has been a powerful tool in numerical simulation of electromagnetic (EM) problems for decades. In recent years, it has also been applied to biomedical research to investigate the interaction between EM waves and biological tissues. In Wireless Body Area Networks (WBANs) studies, to better understand the localization problem within the body, an accurate source/receiver model must be investigated. However, the traditional source models in FDTD involve effective volume and may cause error in near field arbitrary direction. This thesis reviews t

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Li, Sujuan. "Evaluating ambient fine particulate matter source regions in the Ohio River Valley Region." Ohio : Ohio University, 2003. http://www.ohiolink.edu/etd/view.cgi?ohiou1070550479.

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Elrayyah, Ali Y. "Modeling and Control of Microgrid-Connected Photo-Voltaic Sources (MCPV)." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1384345552.

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Hassan, Mahmoud. "Analysis of the propagation of uterine electrical activity applied to predict preterm labor : prédiction de menaces d'accouchement prématuré." Compiègne, 2011. http://www.theses.fr/2011COMP1948.

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Les contractions utérines sont contrôlées par deux phénomènes physiologiques: l'excitabilité cellulaire et la propagation de l'activité électrique utérine probablement liées aux hautes et basses fréquences de l'electrohysterograme (EHG) respectivement. Toutes les études précédentes ont porté sur l'extraction de paramètres de la partie haute fréquence et n'ont pas montré un potentiel satisfait pour l'application clinique. L'objectif de cette thèse est l'analyse de propagation de l'EHG pendant la grossesse et le travail dans la vue de l'extraction des outils pour une application clinique. Une de

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Ray, Mike C. T. "Solar Data Analysis." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1078.

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The solar industry has grown considerably in the last few years. This larger scale has introduced more problems as well as possibilities. One of those possibilities is analyzing the data coming from the sites that are now being monitored, and using the information to answer a variety of questions. We have four questions which are of prime importance identified in this thesis: 1. Can data from customers be trusted? 2. Can we use data from existing sites to determine which sites need the most improvement? 3. Can we implement a location-based algorithm to reduce the amount of false positives for

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Aljadid, Abdolmonem Ibrahim. "Control and protection analysis for power distribution in a distributed generation system." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2192.

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Thesis (MTech (Electrical Engineering))--Cape Peninsula University of Technology.<br>Distributed Generation systems based on renewable energy sources, such as wind or solar are mostly intermittent sources, due to their dependency on the weather, whereas those based on other primary energy sources are non-intermittent. All of them are specially designed to be integrated into distribution systems, in order to improve the power demand of consumers. In the last few decades of the twentieth century, several different factors have played a key role in increasing interest in systems. Distributed Gene

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Musoni, Nkusi Emmanuel. "Analysis of the effect of renewable generation on the power quality of the grid, modelling and analysis of harmonic and voltage distortion." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2805.

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Thesis (Master of Engineering in Electrical Engineering)--Cape Peninsula University of Technology, 2018.<br>As the electric energy demand grows, there is a significant increase in the penetration of renewable generation (RG) in the existing electrical grid network. Interconnecting of renewable generation technologies to an existing distribution system has proven to provide various benefits such as meeting the growing load demand and its contribution to energy system decarbonisation, long-term energy security and expansion of energy access to new energy consumers in the developing urban and rur

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Gupta, Gunjan. "An analysis and improvement of selected features of power quality of grid-tied alternative energy systems." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2696.

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Thesis (PhD (Electrical Engineering))--Cape Peninsula University of Technology, 2018.<br>Electrical energy can be easily used and converted to other forms of energy for various applications. Technological advancement increases the dependency on electricity to a great extent. Various internal and external factors are responsible for the bad quality of power in power systems. The performance of the system is greatly affected by the presence of harmonics, as well as voltage and frequency variations, which leads to the malfunctioning of the device and decline of power quality and supply at load s

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You, Keping Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "A new bidirectional AC-DC converter using matrix converter and Z-source converter topologies." Awarded by:University of New South Wales, 2007. http://handle.unsw.edu.au/1959.4/37450.

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This thesis proposes a new bidirectional three-phase AC-DC power converter using matrix converter and Z-source inverter topologies. Advantages of the AC-DC matrix converter are the inherently controllable power factor, the tight DC voltage regulation, the wide bandwidth with quick response to load variation, the single-stage buck-voltage AC-to-DC power conversion; advantages of the z-source inverter are the increased reliability by allowing the shoot-through between upper and lower power switches of one inverter leg, insensitivity to DC bus voltage due to the extra freedom of controlling DC-li

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Sabala, Ryan J. "Satellite Attitude Determination Using Laser Communication Systems." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1218636153.

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Khan, Amir Ali. "Séparation de sources thermométriques." Phd thesis, Grenoble INPG, 2009. http://tel.archives-ouvertes.fr/tel-00477455.

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Ce travail de thèse aborde un problème de la détection des fuites d'eau dans des digues en terre. L'écoulement préférentiel, un indicateur de destruction interne, résulte dans une anomalie thermique. Les capteurs DTS basés sur la fibre optique offrent une solution efficace pour les mesures spatio-temporelles de température. Les données thermométriques sont influencées par différents facteurs comme la réponse du sol, les variations saisonnières, l'environnement géomécanique, etc. Afin d'écarter des phénomènes comme les précipitations, nous proposons un critère basé sur le skewness et le kurtosi

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46

Moghadasiriseh, Amirhasan. "Analysis and Modeling of Advanced Power Control and Protection Requirements for Integrating Renewable Energy Sources in Smart Grid." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2469.

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Attempts to reduce greenhouse gas emissions are promising with the recent dramatic increase of installed renewable energy sources (RES) capacity. Integration of large intermittent renewable resources affects smart grid systems in several significant ways, such as transient and voltage stability, existing protection scheme, and power leveling and energy balancing. To protect the grid from threats related to these issues, utilities impose rigorous technical requirements, more importantly, focusing on fault ride through requirements and active/reactive power responses following disturbances. This

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Acquaviva, Valerie. "ANALYSE DE l'INTEGRATION DES SYSTEMES ENERGETIQUES A SOURCES RENOUVELABLES DANS LES RESEAUX ELECTRIQUES INSULAIRES." Phd thesis, Université Pascal Paoli, 2009. http://tel.archives-ouvertes.fr/tel-00605573.

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L'objectif de ce mémoire est d'analyser le potentiel des installations photovoltaïques connectées au réseau électrique insulaire. Notre étude porte sur trois types de systèmes : l'intégration de centrales PV dans le réseau électrique, l'utilisation de système PV en toiture pour réduire les chutes de tension en bout de ligne et un système à vocation expérimentale. La première partie offre une analyse détaillée de l'apport du photovoltaïque dans le réseau de distribution d'électricité corse. La simultanéité entre la charge et la puissance fournie par une centrale PV y est étudiée ainsi que le ta

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48

Diop-Ngom, Fatou. "Source de particules neutres monocinétiques : diagnostics spécifiques et étude physique d'une source de Hall en plasma d'argon ou en mixture xénon-argon." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2025/document.

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Des années 50 à nos jours, la propulsion électrique n'a cessé d'évoluer afin de s'imposer dans le domaine de la propulsion spatiale. Les Propulseurs à effet Hall (PEH) sont principalement utilisés pour des missions de correction de trajectoire ou de maintien en orbite des satellites. Ils délivrent des faisceaux d'ions à forte densité de courant et à faible énergie, ce qui en font de bons candidats potentiels pour d'autres applications comme la microélectronique ou encore les traitements de surfaces. Le xénon est l'ergol le plus utilisé en raison de sa masse élevée et de son faible énergie d'io

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Antonakakis, Marios [Verfasser], Carsten H. [Akademischer Betreuer] Wolters, Michalis Akademischer Betreuer] Zervakis, and Jens [Gutachter] [Haueisen. "The effect of experimental and modeling parameters on combined EEG/MEG source analysis and transcranial electric stimulation optimization of somatosensory and epilepsy activity / Marios Antonakakis ; Gutachter: Jens Haueisen ; Carsten H. Wolters, Michalis Zervakis." Ilmenau : TU Ilmenau, 2021. http://d-nb.info/1239049455/34.

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Gisbert, Rémy. "Optimisation d'une source d'ions à décharge luminsescente pour spectromètre de masse." Grenoble 1, 1992. http://www.theses.fr/1992GRE10118.

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La source d'ions a decharge luminescente en mode continu est utilisee en spectrometrie de masse car elle permet d'obtenir un signal intense, stable et peu discriminatoire. Nous avons etudie les differentes fonctions remplies par cette source (atomisation de l'echantillon et ionisation des produits re-emis) pour analyser son fonctionnement et l'optimiser. L'etude des processus successifs (etablissement et fonctionnement de l'auto-entretien, atomisation par pulverisation de l'echantillon, ionisation des atomes emis dans la decharge) nous a permis de montrer l'importance des parametres suivants:

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