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Dissertations / Theses on the topic 'High voltage electric field'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Bas, Gokcen. "Electric Field Analysis In Stress Controlled High Voltage Cables." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605778/index.pdf.

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The terminations and the joints are the basic accessories of the power cables. Power cables require electrical stress control when terminated. Since there are different types of terminations, the analysis should be done to choose the proper method for electric field control problem at the terminations. Throughout this study two different types of termination methods are investigated by using the finite element analysis program (ANSYS): Stress Controlled Termination Model with Deflector and Stress Control Tube (SCT). The results are compared with those obtained for a cable without stress contro

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2

Okubo, H., T. Otsuka, K. Kato, N. Hayakawa, and M. Hikita. "Electric field optimization of high voltage electrode based on neural network." IEEE, 1997. http://hdl.handle.net/2237/6881.

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3

Mesgarpour, Tousi Maryam. "Electric Field Grading and Electrical Insulation Design for High Voltage, High Power Density Wide Bandgap Power Modules." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/100621.

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The trend towards more and all-electric apparatuses and more electrification will lead to higher electrical demand. Increases in electrical power demand can be provided by either higher currents or higher voltages. Due to "weight" and "voltage" drop, a raise in the current is not preferred; so, "higher voltages" are being considered. Another trend is to reduce the size and weight of apparatuses. Combined, these two trends result in the high voltage, high power density concept. It is expected that by 2030, 80% of all electric power will flow through "power electronics systems". In regards to th

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4

Loza, Emmanuel. "CASCADED HIGH VOLTAGE CONVERTER WITH VARIABLE CONTROL FOR PULSED ELECTRIC FIELD APPLICATIONS." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/807.

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Living a sustainable lifestyle while facing increasing population and decreasing natural resources has become one of humanity’s largest challenges. Locating fossil fuels is becoming more difficult while the demand for them to power our societies is ever increasing. Instead of finding more efficient methods of extracting fossil fuels, developing technologies that create renewable substitutes for fossil fuels is now the strategy. Algae biofuel matches fossil fuel performance while also meeting the criteria for renewable energy. The focus now shifts to finding methods for commercially produci

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5

Que, Weiguo. "Electric Field and Voltage Distributions along Non-ceramic Insulators." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1037387155.

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6

Fylladitakis, Emmanouil D. "Characterisation of electrohydrodynamic fluid accelerators comprising highly asymmetric high voltage electrode geometries." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/13670.

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Electrohydrodynamics (EHD) is a promising research field with several trending applications. Even though the phenomenon was first observed centuries ago, there is very little research until the middle 20th century, as the mechanisms behind it were very poorly understood. To this date, the majority of research is based on the development of empirical models and the presentation of laboratory experiments. This work begins with an extensive literature review on the phenomenon, clarifying conflicts between researchers throughout the history and listing the findings of the latest research. The lite

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7

Zhou, Churui. "Space charge dynamics in polyethylene under periodical high voltage electric fields." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/418005/.

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During the last two decades, space charge has been recognised to be a major factor influencing the electrical performance of cable insulation. A significant amount of work has been carried out to investigate space charge dynamics within polymeric insulation under high voltage direct current (HVDC) fields. Modern charge mapping techniques are adopted to obtain the necessary information about space charge within the insulation. However, the underlying physics of charge transport and the charge trapping characteristics of space charge are not well understood. Employing theoretical modelling based

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8

Bloom, Matthew Anthony. "DC, RF, and Thermal Characterization of High Electric Field Induced Degradation Mechanisms in GaN-on-Si High Electron Mobility Transistors." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/966.

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Gallium Nitride (GaN) high electron mobility transistors (HEMTs) are becoming increasingly popular in power amplifier systems as an alternative to bulkier vacuum tube technologies. GaN offers advantages over other III-V semiconductor heterostructures such as a large bandgap energy, a low dielectric constant, and a high critical breakdown field. The aforementioned qualities make GaN a prime candidate for high-power and radiation-hardened applications using a smaller form-factor. Several different types of semiconductor substrates have been considered for their thermal properties and cost-effect

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9

Fatokun, Folasade Okedoyin. "Corona ions from high voltage powerlines : production, effect on ambient particles, DC electric field and implications on human exposure studies." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/20714/1/Folasade_Fatokun_Thesis.pdf.

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Powerlines are important in the process of electricity transmission and distribution (T & D) and their essential role in transmitting electricity from the large generating stations to the final consumers cannot be over emphasized. Over the years, an increase in the demand for electrical energy (electricity) has led to the construction and inevitable use of high transmission voltage, sub-transmission voltage and distribution voltage power conducting lines, for the electricity T & D process. Along with this essential role, electricity conductors can also give rise to some electrically related

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Fatokun, Folasade Okedoyin. "Corona ions from high voltage powerlines : production, effect on ambient particles, DC electric field and implications on human exposure studies." Queensland University of Technology, 2008. http://eprints.qut.edu.au/20714/.

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Powerlines are important in the process of electricity transmission and distribution (T & D) and their essential role in transmitting electricity from the large generating stations to the final consumers cannot be over emphasized. Over the years, an increase in the demand for electrical energy (electricity) has led to the construction and inevitable use of high transmission voltage, sub-transmission voltage and distribution voltage power conducting lines, for the electricity T & D process. Along with this essential role, electricity conductors can also give rise to some electrically related

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11

Michelarakis, Michail. "Electric field distribution of sphere-plane gaps : A SIMULATION APPROACH." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187651.

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The continuous increase of the voltage levels in power transmission systems has lead to the occurrence of higher switching transients during their operation. The design of equipment and grid components able to sustain such a stressful operation, requires an intensive study of the electric field stress generated by these transients, and their distribution to the vicinity of each configuration. Sphere-plane gaps are the most theoretically and practically interesting electrode configurations. So far, the majority of the conducted work is referred to the study of the discharge characteristics of t

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12

Jin, Donghyun. "Dynamic ON-resistance in high voltage GaN field-effect-transistors." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91108.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Recently, the development of energy efficient electrical power management systems has received considerable interest due to its potential to realize significant energy savings for the world. With current Si-based power electronics system being matured, GaN Field-Effect-Transistors have emerged as a disruptive technology with great potential that arises from the outstanding material properties

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13

Asgarifar, Hajarossadat. "Application of high voltage, high frequency pulsed electromagnetic field on cortical bone tissue." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/53105/1/Hajarossadat_Asgarifar_Thesis.pdf.

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Over the last few decades, electric and electromagnetic fields have achieved important role as stimulator and therapeutic facility in biology and medicine. In particular, low magnitude, low frequency, pulsed electromagnetic field has shown significant positive effect on bone fracture healing and some bone diseases treatment. Nevertheless, to date, little attention has been paid to investigate the possible effect of high frequency, high magnitude pulsed electromagnetic field (pulse power) on functional behaviour and biomechanical properties of bone tissue. Bone is a dynamic, complex organ, w

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Dimarino, Christina Marie. "Design and Validation of a High-Density 10 kV Silicon Carbide MOSFET Power Module with Reduced Electric Field Strength and Integrated Common-Mode Screen." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/86596.

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Electricity is the fastest-growing type of end-use energy consumption in the world, and its generation and usage trends are changing. Hence, the power electronics that control the flow and conversion of electrical energy are an important research area. Advanced power electronics with improved efficiency, power density, reliability, and functionality are critical in data center, transportation, motor drive, renewable energy, and grid applications, among others. Wide-bandgap power semiconductors are enabling power electronics to meet these growing demands, and have thus begun appearing in comme

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Stan, Nikola. "Complete Measurement System for Measuring High Voltage and Electrical Field Using Slab-Coupled Optical Fiber Sensors." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7053.

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A slab-coupled optical fiber sensor (SCOS) falls into a narrow class of all-dielectric optical fiber electric field sensors, which makes it a perfect candidate for measurements of high electric fields in environments where presence of conductors is highly perturbing to the system under test. Its nonlinear response to high fields requires a new nonlinear calibration technique. A nonlinear calibration method is explained and demonstrated to successfully measure high electric fields, as well as high voltages with dynamic range up to 50 dB. Furthermore, a SCOS can be fitted into narrow spaces and

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16

Johnstone, Paul Trevor. "Applications of High Voltage Power Supplies in the Purification of Water." Thesis, University of Canterbury. Electrical and Computer Engineering, 2001. http://hdl.handle.net/10092/1181.

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High voltage treatment technology has been developed in this thesis and had initially shown promise in its effectiveness in reducing microorganisms found in water supplies. Initial testing found that the high voltage could destroy over 99.9% of the bacteria S. marcescens (a 3-log reduction). Cited literature on the effects of high voltage pulsed electric fields (PEFs) on various microorganisms have shown that high destruction rates of up to 9-log can be achieved. Thus by increasing the electric field strength or exposure time, or by improving the design of the electrode flow chamber, better re

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17

Li, M. S. F. "Investigating the effects of applying a high voltage DC electric field in a flame using a point to plane electrode arrangement." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1433168/.

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A high voltage DC electric field was applied to methane and hydrogen flames using electrodes in a point to plane configuration. In a methane flame the Townsend mechanisms were observed along with the streamer, glow and spark corona discharge and were characterised using electrical, visual, audio and mass spectrometry data. A Pt point electrode was used to explore the region where the Townsend mechanisms took place by taking full mass spectrums from 10 – 50 amu for various voltages, varying oxygen concentration and using different inert gases. Large decreases in H2O and CO2 was observed in the

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18

Holmgren, Jens. "Investigation of alternative current measurements in high-voltage applications." Thesis, Linköping University, Department of Science and Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8149.

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<p>ABB:s MACH2 system uses a number of currents to ignite thyristors for AC/DC-trassfformation and they are measured for control and protection. The measurement methods used today has major drawbacks. Two alternative techniques are investigated, one based on the Hall-Effect (HED) and the other based on Anisotropic Magnetoreistanse (AMR), both techniques sensing the magnetic field produced by currents in a conductor. The HED hawe low sensitivity so some kind of flux concentrators is needed. This adds volume, costs and complexity to the device. The AMR technique is much more sensitive than the H

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19

Zavattoni, Laëtitia. "Conduction phenomena through gas and insulating solids in HVDC gas insulated substations, and consequences on electric field distribution." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT063/document.

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L'émergence des énergies renouvelables a entraîné le développement de nouvelles technologies pour la distribution de l'énergie sur de longues distances. Ces dernières sont basées sur le transport via de hautes tensions continues (HVDC) pour éviter les pertes capacitives. Ce réseau de distribution est interconnecté via des Postes Sous Enveloppes Métalliques (PSEM), dont l'isolation est composée de gaz sous pression (SF6) et d'isolants solides (résine époxy), qui doivent résister sous HVDC. Dans ces dispositifs, le champ électrique n'est plus déterminé par la permittivité relative des matériaux,

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20

Fielding, Trevor J. "An investigation of the field electron emission processes responsible for the flashover of high voltage vacuum devices." Thesis, Aston University, 1986. http://publications.aston.ac.uk/8050/.

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21

Zabihi, Sasan. "Flexible high voltage pulsed power supply for plasma applications." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/48137/1/Sasan_Zabihi_Sheykhrajeh_Thesis.pdf.

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Demands for delivering high instantaneous power in a compressed form (pulse shape) have widely increased during recent decades. The flexible shapes with variable pulse specifications offered by pulsed power have made it a practical and effective supply method for an extensive range of applications. In particular, the release of basic subatomic particles (i.e. electron, proton and neutron) in an atom (ionization process) and the synthesizing of molecules to form ions or other molecules are among those reactions that necessitate large amount of instantaneous power. In addition to the decompositi

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Sarkis, Julia Ribeiro. "Extração de compostos bioativos de tortas de nozes e sementes e aplicação de tecnologias elétricas no gergelim." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/96642.

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O presente trabalho teve como objetivo estudar diferentes tecnologias na extração de óleo da semente de gergelim e de compostos fenólicos e proteínas da torta de gergelim. Este estudo está dividido em quatro partes. O objetivo da primeira parte do trabalho foi extrair compostos fenólicos de diferentes tortas de nozes e sementes nas mesmas condições e comparar o teor de tais compostos e a atividade antioxidante dos extratos. Nessa fase, foram utilizadas nos experimentos tortas das sementes de girassol, linhaça e gergelim, e das nozes amêndoa, pecã, macadâmia e avelã. O extrato da torta de noz p

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23

Serrano, Guillermo J. "High Performance Analog Circuit Design Using Floating-Gate Techniques." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19819.

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The programmability property of floating-gate transistors is exploited in this work to compensate for mismatch and device parameter variations in various high performance analog circuits. A careful look is taken at the characteristics and behavior of floating-gate transistors; issues such as programming, precision, accuracy, and charge retention are addressed. An alternate approach to reduce the offset voltage of the amplifier is presented. The proposed approach uses floating-gate transistors as programmable current sources that provide offset compensation while being a part of the amplifier

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24

Delsart, Cristele. "Champs électriques pulsés et décharges électriques de haute tension pour l’extraction et la stabilisation en oenologie." Thesis, Bordeaux 2, 2012. http://www.theses.fr/2012BOR21982/document.

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La filière viti-vinicole se doit de trouver des solutions au cours des années à venir afin de réduire son impact carbone de 20% et de proposer rapidement des alternatives au dioxyde de soufre. Ainsi, ce travail de thèse sur les champs électriques pulsés propose aux professionnels du vin une éco-innovation qui pourrait aider à répondre à ces deux problématiques. L’éco-innovation est de plus en plus considérée comme la clé de la compétitivité future dans le cadre du développement durable. Toutefois, avant d’être intégrée dans la production du vin, l’éco-innovation doit démontrer sa performance e

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GALLESI, FEDERICO. "Investigation, Experimental Development, and Field Application of Non-Invasive Sensors for Partial Discharge Measurement." Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1082296.

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Electrical insulating systems represent one of the weakest elements of the entire electrical equipment. In fact, the lifetime of any electrical device depends on the capability of its insulation to last in time. In general, all organic materials, and in particular all dielectrics, are subjected to ageing. The ageing process is caused by different stresses: thermal, electrical, mechanical and environmental. By focusing on the electrical stress, it is possible to state that it is fundamentally characterized by two phenomena: the presence of an electric field and/or the presence of partial discha

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Brianceau, Silène. "Vers une amélioration quantitative et qualitative de l'extraction des composés phénoliques du marc de raisin rouge à l'aide d'électrotechnologies." Thesis, Compiègne, 2015. http://www.theses.fr/2015COMP2249/document.

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Ce travail porte sur l’amélioration quantitative et qualitative du procédé de fabrication d’extraits de marc de raisin riches en composés phénoliques. Les effets de technologies alternatives de traitement de la biomasse végétale sur l’amélioration des rendements d’extraction ont été étudiés à l’échelle laboratoire. Leurs impacts sur la qualité biochimique des extraits obtenus ont été évalués via la caractérisation analytique des composés phénoliques.Une étude comparative de différentes technologies alternatives de pré-traitement en milieux aqueux (décharges électriques haute tension (DEHT), ch

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Jaffré, Yoann-nicolas. "Optimisation de réacteurs à plasmas non-thermiques pour le traitement des oxydes d'azote." Thesis, Ecully, Ecole centrale de Lyon, 2010. http://www.theses.fr/2010ECDL0022/document.

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Malgré les récentes avancées technologiques, les combustions thermiques des véhicules génèrent toujours trop de gaz polluants et les systèmes purement catalytiques ne parviennent pas à les traiter efficacement pour toutes les phases de fonctionnement des moteurs. Les oxydes d’azote font partie des gaz polluants les plus préoccupants, pour lesquels il est urgent de trouver une solution. Ce travail est dédié à la mise en œuvre d’une de ces solutions par l’utilisation des plasmas non-thermiques. La maîtrise et la compréhension des décharges dans les gaz permettent de générer des plasmas non-therm

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Mohamad, Isa Muammar Bin. "Low Noise Amplifiers using highly strained InGaAs/InAlAs/InP pHEMT for implementation in the Square Kilometre Array (SKA)." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/low-noise-amplifiers-using-highly-strained-ingaasinalasinp-phemt-for-implementation-in-the-square-kilometre-array-ska(31b6cbae-7b7e-43fe-a612-b3555dd2263d).html.

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The Square Kilometre Array (SKA) is a multibillion and a multinational science project to build the world’s largest and most sensitive radio telescope. For a very large field of view, the combined collecting area would be one square kilometre (or 1, 000, 000 square metre) and spread over more than 3,000 km wide which will require a massive count of antennas (thousands). Each of the antennas contains hundreds of low noise amplifier (LNA) circuits. The antenna arrays are divided into low, medium and high operational frequencies and located at different positions to boost up the telescope’s scann

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Кессаев, Александр Геннадиевич. "Водные триинги в силовых кабелях при действии сильного электрического поля и техника их обнаружения". Thesis, НТУ "ХПИ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/26761.

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Диссертация на соискание ученой степени кандидата технических наук по специальности 05.09.13 – техника сильных электрических и магнитных полей. Национальный технический университет "Харьковский политехнический институт", Харьков, 2016. Диссертация посвящена обоснованию техники обнаружения водных триингов в силовых кабелях среднего напряжения коаксиальной конструкции с водоблокирующим барьером при действии сильного электрического поля на основании результатов математического моделирования водных включений сферической формы в толще сшитой полиэтиленовой изоляции и физического моделирования проц

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El, Kantar Sally. "Valorisation des coproduits issus des industries d’agrumes : extraction des molécules bioactives par des technologies innovantes." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2440/document.

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Ce travail de doctorat consiste à valoriser les coproduits issus des industries d’agrumes par des technologies innovantes. Le pressage des agrumes produit des millions de tonnes de déchets par an dans le monde. Ces déchets (peaux, pulpes et pépins) sont généralement dédiés à l’alimentation animale ou bien éliminés par compostage ou incinération. Cependant leur contenu en molécules bioactives conduit à plusieurs voies de valorisation. Vu que les peaux constituent à peu près la moitié de la masse des déchets d’agrumes, les études ont été faites sur la valorisation des peaux de différents types d

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Ng, Wing Lun. "Low-voltage high-frequency CMOS transformer-feedback voltage-controlled oscillators /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?ECED%202006%20NG.

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Dale, Joel Kelly. "Electric field lines and voltage potentials associated with graphene nanoribbon." Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2471.

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Graphene can be used to create circuits that are almost superconducting, potentially speeding electronic components by as much as 1000 times [1]. Such blazing speed might also help produce ever-tinier computing devices with more power than your clunky laptop [2]. Graphite is a polymorph of the element carbon [3]. Graphite is made up of tiny sheets of graphene. Graphene sheets stack to form graphite with an interplanar spacing of 0.335 nm, which means that a stack of 3 million sheets would be only one millimeter thick. [1]

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Кєссаєв, Олександр Геннадійович. "Водяні триінги в силових кабелях при дії сильного електричного поля та техніка їх виявлення". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/26759.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.09.13 – техніка сильних електричних та магнітних полів. Національний технічний університет "Харківський політехнічний інститут", Харків, 2016. Дисертація присвячена обґрунтуванню техніки виявлення водяних триінгів в силових кабелях середньої напруги коаксіальної конструкції з водоблокуючим бар'єром при дії сильного електричного поля на підставі результатів математичного моделювання водяних включень сферичної форми в товщі зшитої поліетиленової ізоляції та фізичного моделювання процесу зволоження зразків кабе

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Bell, Simon Colin. "High-voltage partial-core resonant transformers." Thesis, University of Canterbury. Electrical and Computer Engineering, 2008. http://hdl.handle.net/10092/2161.

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This thesis first describes the reverse method of transformer design. An existing magnetic model for full-core shell-type transformers, based on circuit theory, is summarised. A magneto-static finite element model is introduced and two sample transformers are analysed. The magnetic model based on finite element analysis is shown to be more accurate than the model based on circuit theory. Partial-core resonant transformers are then introduced and their characteristics are explained using an equivalent circuit model. A method of measuring the winding inductances under resonant operation is dev

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Kopelvski, Maycon Max. "Sistema de caracterização elétrica de dispositivos emissores de campo." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-28032008-174207/.

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Neste trabalho é apresentado o desenvolvimento de um sistema de ensaios elétricos de dispositivos de emissão de campo para que, a partir desses ensaios, possam ser extraídas as características elétricas desses dispositivos. O sistema é composto por hardware e software dedicados e pode ser controlado local ou remotamente. O hardware inclui uma fonte de alta tensão gerenciada por um sistema microcontrolado. Para programação do microcontrolador, foi utilizado um ambiente de programação disponibilizado pelo próprio fabricante do microcontrolador. Nesse desenvolvimento foram empregados periféricos

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Naredo, V. José Luis A. "Communication frequency response of high voltage power lines." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26725.

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Several methods for calculating the electrical phase and modal parameters of overhead transmission lines are described in this thesis; then, a graphical method for evaluating communication frequency response of delta transmission lines -based on the guidelines given by W. H. Senn [12,13,14]- is developed. The graphical method, combined with the parameters calculation methods, obviates the need of large mainframe computers for the analysis of power line carrier (PLC) systems. A new technique for assessing coupling alternatives, based on Senn's method, is developed. The technique is applied to

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Buchan, John G. "Partial discharge measurements in high voltage motors." Thesis, Robert Gordon University, 1987. http://hdl.handle.net/10059/617.

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The work presented in this thesis is concerned with the development of an on-line technique for detecting and locating partial discharges in the stator winding of a high voltage electrical machine. This technique forms part of an on-line health monitoring strategy for the insulation of high voltage machines. Existing diagnostic techniques and partial discharge measurement systems are reviewed. The requirement for an on-line partial discharge location technique is discussed. An experimental investigation was carried out into the propagation characteristics of partial discharge pulses within a m

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Bialek, Thomas Owen. "Evaluation and modeling of high-voltage cable insulation using a high-voltage impulse." Diss., Mississippi State : Mississippi State University, 2005. http://library.msstate.edu/content/templates/?a=72.

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Mugala, Gavita. "High frequency characteristics of medium voltage XLPE power cables." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-560.

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Bolund, Björn. "Electric Power Generation and Storage Using a High Voltage Approach." Doctoral thesis, Uppsala University, Department of Engineering Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6833.

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<p>Production and consumption of electricity have grown enormously during the last century. No mater what the primary source of energy is, almost all generation of electricity comes from conversion of a rotational movement in a generator. The aim of this thesis is to see how high voltage technology influence production and storage of electricity. Power flow in the generators used to convert mechanical movement to electric energy is analyzed using Poynting‘s vector. The impact of new generator technology for efficient extraction of hydroelectric power is shown. Simulation of a large permanent m

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Gonzalez-Torres, Juan Carlos. "Transient stability of high voltage AC-DC electric transmission systems." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS041.

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Les nouvelles politiques adoptées par les autorités nationales ont encouragé pendant les dernières années l'intégration à grande échelle des systèmes d'énergie renouvelable (RES). L'intégration à grande échelle des RES aura inévitablement des conséquences sur le réseau de transport d'électricité tel qu'il est conçu aujourd'hui, car le transport de l'électricité massif sur de longues distances pourrait amener les réseaux de transport à fonctionner près de leurs limites, réduisant ainsi leurs marges de sécurité. Des systèmes de transport d’électricité plus complexes seront donc nécessaires.Dans

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Benwell, Andrew L. Kovaleski Scott D. "A high voltage piezoelectric transformer for active interrogation." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6847.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 23, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Dr. Scott D. Kovaleski. Vita. Includes bibliographical references.

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Shafran, John Sawa. "A MEMS-based, high-resolution Electric-Field meter." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33358.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.<br>Includes bibliographical references (p. 169-172).<br>In MEMS-based inertial sensors, such as accelerometers and gyroscopes, known electrical waveforms are applied to a modulating capacitive element to determine an unknown deflection. However, the inverse of this scheme can also be exploited - the capacitive element can be deterministically modulated to measure an electrostatic variable. This thesis presents the design, analysis, and evaluation of such a sensor -a MEMS-based,

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Tong, Sai-kit. "A computer-aided measurement system for monopolar high-voltage direct-current coronating lines /." [Hong Kong] : University of Hong Kong, 1986. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12321771.

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Rainbird, Paul L. "Prediction of temperature rise in low voltage high current electrical switchboards." Thesis, Queensland University of Technology, 1990. https://eprints.qut.edu.au/36452/1/36452_Rainbird_1990.pdf.

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At present, the electrical switchboard designer us ually constructs a full-scale prototype and tests it at rated current to ascertain its temperature rise performance, under simulated normal operating conditions. Temperatures are then reduced by application of one or several techniques including modification of the switchboard design. Steady-state temperature rise within an electrical switchboard is attained when t he Joule heat generated by electrical losses is exactly balanced by the heat l ost by cooling. The basic factors affecting this heat balance in electrical switchboards are

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Crnojacki, Zorica. "Extra high voltage transmission corridor siting : technical, public, institutional and regulatory considerations /." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-10032007-171749/.

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Vazquez, Kalty. "Synthesis of Carbon Nanotubes Using High Voltage and High Frequency Induction Field." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/1031.

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The fields of nanomaterial and nanostructures are some of the fastest growing fields in material science today. Carbon nanotubes are at the forefront of these fields and their unique mechanical and electrical properties are of great interest to those working in multiple engineering fields. The overall objective of this study was to design and develop a new process and the equipment necessary, to synthesize carbon nanotubes using high voltage and a high-frequency induction field. This was the first time that a high voltage and an induction field have been used simultaneously in high yield produ

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湯世傑 and Sai-kit Tong. "A computer-aided measurement system for monopolar high-voltage direct-current coronating lines." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1986. http://hub.hku.hk/bib/B31207467.

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Goss, Ben. "Degradation and life time prediction of high voltage insulation materials." Thesis, Queensland University of Technology, 2001.

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Mathieson, Grant Alexander. "Interfacing solar panels with a high voltage electric vehicle battery bus." Thesis, University of Canterbury. Department of Electrical and Electronic Engineering, 1993. http://hdl.handle.net/10092/2352.

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