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Dissertations / Theses on the topic 'Spare capacities'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Seymour, Ciara K. "Reciprocal Capacities and Adaptive Space." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1306500559.

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2

Kim, Jaecheol. "The role of radicals supplied directly and indirectly on ignition." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53001.

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The ignition process is a critical consideration for combustion devices. External energy transfer to the combustor is required for ignition in common combustion systems. There are many ways to deposit energy into the flow but a standard method is a spark discharge because it is simple, compact, and reliable. Sparks can be categorized as either inductive or capacitive sparks that use a coil or an electrical resonance circuit with capacitor, respectively, to amplify the voltage. The creation of a successful ignition event depends on the spark energy deposited into the flow, the initial compositi

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3

Chang, Chee Kean. "SPARSE DIRECT SOLUTION METHODS FOR CAPACITIVE EXTRACTION PROBLEMS ON CLOSELY-SPACED GEOMETRIES WITH HIGH ASPECT RATIOS." UKnowledge, 2017. http://uknowledge.uky.edu/ece_etds/108.

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The method of moment (MoM) [1] is a widely used method in electromagnetics to solve static and dynamic electromagnetic problems on varying geometries. However, in closely spaced geometries coupled with large aspect ratios, e.g. a large parallel plate capacitor with very small separation gap, the problem exhibits several challenges. Firstly, the close proximity of the field and source elements presents problems with convergence in numerical evaluations of the interactions between them. Secondly, the aspect ratio of the geometry gives an approximation whereby to far field points, the source cont

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4

Habib, Mohammad Humayun. "Semiconductor P-N Junction Space Charge Region Capacitance." PDXScholar, 1992. https://pdxscholar.library.pdx.edu/open_access_etds/4589.

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The classical capacitance voltage characteristics based on the depletion approximation, is adequate at reverse bias, but introduces errors at high forward bias. Because of its inherent simplicity and compactness this classical depletion model is well studied and widely used in circuit simulators. In this work, a new model for the semiconductor space charge region (SCR) capacitance, based on physical justification, will be derived. This new model takes three input parameters, C0 , Vbi and m, thus eliminating the fitting parameter FC currently used in SPICE. This new model is applicable for any

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5

Summers, Clinton Thomas. "Distance Protection Aspects of Transmission Lines Equipped with Series Compensation Capacitors." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/35284.

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In order to meet the high demand for power transmission capacity, some power companies have installed series capacitors on power transmission lines. This allows the impedance of the line to be lowered, thus yielding increased transmission capability. The series capacitor makes sense because it's simple and could be installed for 15 to 30% of the cost of installing a new line, and it can provide the benefits of increased system stability, reduced system losses, and better voltage regulation.1 Protective distance relays, which make use of impedance measurements in order to determine the p

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6

net, tauel76@netscape, and Tauel Harper. "Assessing the Critical Capacities of Democracy Through the Work of Hannah Arendt and Jurgen Habermas: The Occlusion of Public Space and the Rise of Homo Spectaculorum." Murdoch University, 2005. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060125.105249.

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This thesis is an exploration of the condition of critical debate in contemporary liberal democracies that is based upon a combined reading of the works of Hannah Arendt and Jurgen Habermas. It begins with an elaboration of the position that Arendt and Habermas identify a similar malaise as afflicting modern liberal democracies, which is argued to result from a shared perception that such democracies fail to create a forum for critical public engagement. The argument that their democratic theories are highly complementary is further developed through an examination of their solutions to this c

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7

Harper, Tauel. "Assessing the critical capacities of democracy through the work of Hannah Arendt and Jurgen Habermas: the occlusion of public space and the rise of homo spectaculorum." Thesis, Harper, Tauel (2005) Assessing the critical capacities of democracy through the work of Hannah Arendt and Jurgen Habermas: the occlusion of public space and the rise of homo spectaculorum. PhD thesis, Murdoch University, 2005. https://researchrepository.murdoch.edu.au/id/eprint/95/.

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This thesis is an exploration of the condition of critical debate in contemporary liberal democracies that is based upon a combined reading of the works of Hannah Arendt and Jurgen Habermas. It begins with an elaboration of the position that Arendt and Habermas identify a similar malaise as afflicting modern liberal democracies, which is argued to result from a shared perception that such democracies fail to create a forum for critical public engagement. The argument that their democratic theories are highly complementary is further developed through an examination of their solutions to this c

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8

Harper, Tauel. "Assessing the critical capacities of democracy through the work of Hannah Arendt and Jurgen Habermas : the occlusion of public space and the rise of Homo spectaculorum /." Harper, Tauel (2005) Assessing the critical capacities of democracy through the work of Hannah Arendt and Jurgen Habermas: the occlusion of public space and the rise of homo spectaculorum. PhD thesis, Murdoch University, 2005. http://researchrepository.murdoch.edu.au/95/.

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This thesis is an exploration of the condition of critical debate in contemporary liberal democracies that is based upon a combined reading of the works of Hannah Arendt and Jurgen Habermas. It begins with an elaboration of the position that Arendt and Habermas identify a similar malaise as afflicting modern liberal democracies, which is argued to result from a shared perception that such democracies fail to create a forum for critical public engagement. The argument that their democratic theories are highly complementary is further developed through an examination of their solutions to this c

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9

Couffe, Cyril. "L'impact des conditions de travail sur les capacités attentionnelles des salariés." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE2115.

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Les conditions de travail peuvent-elles générer des problèmes attentionnels chez certains salariés ? Cette question est actuellement au cœur de nombreuses recherches dans le domaine de la psychologie du travail, de l’ergonomie et de la psychologie cognitive appliquée. Au cours de ce travail de thèse, nous avons tenté de comprendre quels facteurs pourraient provoquer ces difficultés. Nous avons scindé notre approche en deux parties : (i) l’étude en laboratoire des liens entre les interruptions et les capacités cognitives, et (ii) l’étude des conditions de travail et de leurs retentissements sur

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10

Hutsel, Brian T. Kovaleski Scott D. "Runtime and jitter of a laser triggered gas switch." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/5783.

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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. Title from PDF of title page (University of Missouri--Columbia, viewed on September 24, 2009). Thesis advisor: Dr. Scott Kovaleski. Includes bibliographical references.

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11

Marin-Urias, Luis Felipe. "Planification et contrôle de mouvements en interaction avec l'homme. Reasoning about space for human-robot interaction." Phd thesis, Université Paul Sabatier - Toulouse III, 2009. http://tel.archives-ouvertes.fr/tel-00468918.

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L'interaction Homme-Robot est un domaine de recherche qui se développe de manière expo-nentielle durant ces dernières années, ceci nous procure de nouveaux défis au raisonnement géométrique du robot et au partage d'espace. Le robot pour accomplir une tâche, doit non seulement raisonner sur ses propres capacités, mais également prendre en considération la perception humaine, c'est à dire "Le robot doit se placer du point de vue de l'humain". Chez l'homme, la capacité de prise de perspective visuelle commence à se manifester à partir du 24ème mois. Cette capacité est utilisée pour déterminer si

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12

Didier-Fèvre, Catherine. "« The place to be ? » Vivre et bouger dans les entre-deux : jeunesse et mobilités dans les espaces périurbains." Thesis, Paris 10, 2015. http://www.theses.fr/2015PA100095/document.

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Cette thèse de doctorat mène une réflexion sur les mobilités juvéniles périurbaines sous l’angle de « l’entre-deux », terme caractérisant à la fois les espaces périurbains et la jeunesse. Comment la jeunesse vit-elle une localisation résidentielle, choisie par les parents, et se déplace-t-elle dans ces espaces peu densément peuplés et faiblement desservis par des transports en commun ? Quel rôle jouent les contextes périurbains dans la construction identitaire des jeunes ? L’étude menée, à partir de trois lycées généraux et technologiques situés dans les franges de l’agglomération parisienne e

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13

Pineda, i. Ricart Rubèn. "El procés d'adquisició de la noció de VOLUM. Una recerca basada en la pràctica sobre les capacitats espacials i el pensament tridimensional, per al seu desenvolupament a l'Educació Primària." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/405996.

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En aquesta tesi doctoral es dóna compte de la investigació respecte del procés d'adquisició de la noció de VOLUM, una recerca basada en la pràctica sobre les capacitats espacials i el pensament tridimensional, tenint per objectiu el desenvolupament de la Intel·ligència Múltiple Espacial a l'Educació Primària. La pràctica docent i la teoria acadèmica s'interrelacionen per investigar participativament amb els nens i les nenes de 6 i 7 anys. Mitjançant exercicis proposats en relació als seus dibuixos i les seves construccions, hem construït noves interpretacions d'aquests fenòmens. Aquest t

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14

Benhadjala, Warda. "Fiabilité et miniaturisation des condensateurs pour l'aéronautique : de l'évaluation de composants céramique de puissance à l'étude de nanoparticules hybrides céramique / polymère pour technologies enterrées." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR15271/document.

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L’amélioration des systèmes électroniques pour le déploiement de l'avion tout électrique dépend de la capacité des composants passifs, tels que les condensateurs, à réduire leur volume, leur masse et leur coût, et augmenter leurs performances et leur fiabilité, particulièrement dans l’environnement aéronautique. Dans ce contexte, cette thèse a eu pour objectif l’étude et le développement de nouvelles technologies de condensateurs pour des applications avioniques. Dans la première partie des travaux, nous abordons l’évaluation de condensateurs céramique de puissance. La technologie céramique co

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15

Hering, Maria. "Überschlagsverhalten von Gas-Feststoff-Isoliersystemen unter Gleichspannungsbelastung." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200879.

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Gasisolierte Systeme im Gleichspannungsbetrieb vereinen für Anwendungen moderner Energieübertragung die Forderungen nach kleinräumigen Anlagen und verlustarmem Energietransport über große Entfernungen. Für einen zuverlässigen und sicheren Betrieb muss das Verhalten der eingesetzten Gas-Feststoff-Isolierung im technologischen System bis an die Grenzen des Isolationsvermögens bekannt sein. Gegenstand der vorliegenden Arbeit ist deshalb das Überschlagsverhalten von Gas-Feststoff-Isoliersystemen unter Gleichspannungsbelastung. Dabei stehen zwei wesentliche Einflussfaktoren im Vordergrund: die Temp

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16

Chmeit, Zakaria. "Étude de l'interaction de convertisseurs statiques sur un bus DC mutualisé." Electronic Thesis or Diss., Compiègne, 2021. http://www.theses.fr/2021COMP2652.

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L’impact des stratégies Modulation de Largeur d'Impulsion (MLI) sur les sollicitations des condensateurs de découplage en entrée d’un onduleur triphasé est bien connu à l’heure actuelle au même titre que le comportement de la charge alimentée (facteur de puissance). On dispose à l’heure actuelle d’un large panel de techniques de modulation applicables en fonction des diverses contraintes d’environnement (stress des condensateurs mais aussi qualité des courants dans la charge ou pertes par commutation dans les semi-conducteurs). Toutefois, dans de nombreux contextes applicatifs, le bus continu

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17

Федак, І. О. "Методичні та експериментальні основи оцінки процесу обводнення нафтогазових родовищ за результатами геофізичних досліджень (на прикладі Семенівського нафтового родовища)". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2009. http://elar.nung.edu.ua/handle/123456789/4342.

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У дисертаційній роботі вирішуються актуальні питання геофізичного контролю та прогнозування процесу обводнення продуктивних пластів-колекторів нафтогазових родовищ. Доведено можливість виділення порід-колекторів із мікропористістю на основі аналізу зв’язку інтенсивності природного гамма-випромінювання та інтенсивності гамма-випромінювання радіаційного захоплення теплових нейтронів. На основі седиментаційно-каротажного аналізу проведено класифікацію кривих гамма-каротажу за їх формою та створено схеми розподілу зон із різною динамікою розповсюдження дрібнодисперсної фракції, де локалізовані літ

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18

Нагорняк, Р. І. "Удосконалення методів контролю обводнення нафтогазонасичених пластів за результатами геофізичних досліджень свердловин". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2014. http://elar.nung.edu.ua/handle/123456789/4681.

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У дисертаційній роботі вирішується ряд важливих проблем, які виникають під час контролю за розробкою родовищ із застосуванням геофізичних методів досліджень свердловин. З урахуванням петрофізичної характеристики порід обґрунтовано ефективність використання імпульсного нейтрон-нейтронного каротажу при вивченні характеру обводнення продуктивних відкладів. Для проведення ефективного контролю за ступенем обводнення побудовано просторові схеми зміни часу життя теплових нейтронів у скелеті породи-колектора та у випадку його максимального насичення (на прикладі Північно-Долинського родовища). Встанов

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19

Adabi, Firouzjaee Jafar. "Remediation strategies of shaft and common mode voltages in adjustable speed drive systems." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/39293/1/Jafar_Adabi_Firouzjaeel_Thesis.pdf.

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AC motors are largely used in a wide range of modern systems, from household appliances to automated industry applications such as: ventilations systems, fans, pumps, conveyors and machine tool drives. Inverters are widely used in industrial and commercial applications due to the growing need for speed control in ASD systems. Fast switching transients and the common mode voltage, in interaction with parasitic capacitive couplings, may cause many unwanted problems in the ASD applications. These include shaft voltage and leakage currents. One of the inherent characteristics of Pulse Width Modu

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20

Pramanick, Sumit Kumar. "Switched Capacitive Filtering Scheme for Harmonic Suppression in Variable Speed AC Drives." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/3735.

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For low and medium power applications, conventional two-level inverters are widely used in industrial applications including electric vehicle drives, traction drives, distributed generation, power management and grid connected renewable energy systems. To filter out the harmonic currents from the load, passive line filters are used. These filters are designed to pass the fundamental phase current and suppress higher harmonic currents, making the filters bulky. To get a nearly sinusoidal current waveform, these two level inverters are switched at high frequency to shift the harmonic components

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21

Pramanick, Sumit Kumar. "Switched Capacitive Filtering Scheme for Harmonic Suppression in Variable Speed AC Drives." Thesis, 2016. http://etd.iisc.ernet.in/2005/3735.

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For low and medium power applications, conventional two-level inverters are widely used in industrial applications including electric vehicle drives, traction drives, distributed generation, power management and grid connected renewable energy systems. To filter out the harmonic currents from the load, passive line filters are used. These filters are designed to pass the fundamental phase current and suppress higher harmonic currents, making the filters bulky. To get a nearly sinusoidal current waveform, these two level inverters are switched at high frequency to shift the harmonic components

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22

Dewani, Rahul. "Investigations on Polygonal Voltage Space Vector Structure generation with lower order harmonic suppression using switched capacitive filter throughout modulation range for Drive Applications." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5693.

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Multilevel inverters (MLI) are widely used in a host of industrial applications ranging from renewable energy systems, to electric vehicles, to distributed generation. Due to the switching nature of the output voltage, MLI generate harmonics in output voltage at switching frequency. The harmonics in output voltage generate harmonic currents in the load, which may lead to losses in the system, and may also cause torque pulsations for motor drive applications. Hence, it is necessary to improve the harmonic performance (Total Harmonic Distortion-THD) of the output voltage. To improve the THD of t

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23

Kshirsagar, Abhijit. "Reduced Switch Count Multilevel Inverter Topologies for Open End Induction Motor Drives." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/2722.

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MU LT I L E V E L inverters are becoming the preferred choice for medium voltage high power applications. Multilevel inverters have a number of inherent advantages over conventional two level inverters. The output voltage has multiple steps or levels, resulting in reduced dV/dt, which leads to lower electromagnetic interference, making it easier to meet electromagnetic compatibility (EMC) regulations. Multilevel inverters have a much lower effective switching frequency, which leads to a reduction in switching losses. The output voltage of multilevel inverters has a much lower harmonic conte

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24

Kshirsagar, Abhijit. "Reduced Switch Count Multilevel Inverter Topologies for Open End Induction Motor Drives." Thesis, 2016. http://etd.iisc.ernet.in/handle/2005/2722.

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MU LT I L E V E L inverters are becoming the preferred choice for medium voltage high power applications. Multilevel inverters have a number of inherent advantages over conventional two level inverters. The output voltage has multiple steps or levels, resulting in reduced dV/dt, which leads to lower electromagnetic interference, making it easier to meet electromagnetic compatibility (EMC) regulations. Multilevel inverters have a much lower effective switching frequency, which leads to a reduction in switching losses. The output voltage of multilevel inverters has a much lower harmonic conte

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25

Pappu, Roshan Kumar. "Studies on Single DC Link Fed Multilevel Inverter Topologies by Cascading Flying Capacitor and Floating Capacitor Fed H-Bridges." Thesis, 2014. http://etd.iisc.ac.in/handle/2005/3189.

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Use of multilevel inverters are inevitable in medium and high voltage drives. This is due to the fact that the multilevel inverters can produce voltages in smaller steps which will reduce the harmonic content and result in more sinusoidal voltages and currents as compared to voltages and currents from two-level inverters. Due to the device limitations, use of two-level inverters is not possible in medium and high voltage drive applications. Though multiple devices can be connected both in series and parallel to achieve two-level operation, the output voltages still suﬀer from high harmonic con

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26

Pappu, Roshan Kumar. "Studies on Single DC Link Fed Multilevel Inverter Topologies by Cascading Flying Capacitor and Floating Capacitor Fed H-Bridges." Thesis, 2014. http://hdl.handle.net/2005/3189.

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Use of multilevel inverters are inevitable in medium and high voltage drives. This is due to the fact that the multilevel inverters can produce voltages in smaller steps which will reduce the harmonic content and result in more sinusoidal voltages and currents as compared to voltages and currents from two-level inverters. Due to the device limitations, use of two-level inverters is not possible in medium and high voltage drive applications. Though multiple devices can be connected both in series and parallel to achieve two-level operation, the output voltages still suﬀer from high harmonic con

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27

Gopalakrishnan, K. S. "Study On DC-Link Capacitor Current In A Three-Level Neutral-Point Clamped Inverter." Thesis, 2013. https://etd.iisc.ac.in/handle/2005/2628.

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Three-level diode-clamped inverter is being widely used these days. Extensive research has been carried out on pulse width modulation (PWM) strategies for a three-level inverter. The most widely used PWM strategies are sine-triangle pulse width modulation (SPWM) and centered space vector pulse width modulation (CSVPWM). The influence of these PWM strategies on the DC-link capacitor current and voltage ripple is studied in this thesis. The sizing of the DC capacitor depends on value of the maximum RMS current flowing through it. In this work, an analytical expression for capacitor RMS current

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28

Gopalakrishnan, K. S. "Study On DC-Link Capacitor Current In A Three-Level Neutral-Point Clamped Inverter." Thesis, 2013. http://etd.iisc.ernet.in/handle/2005/2628.

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Three-level diode-clamped inverter is being widely used these days. Extensive research has been carried out on pulse width modulation (PWM) strategies for a three-level inverter. The most widely used PWM strategies are sine-triangle pulse width modulation (SPWM) and centered space vector pulse width modulation (CSVPWM). The influence of these PWM strategies on the DC-link capacitor current and voltage ripple is studied in this thesis. The sizing of the DC capacitor depends on value of the maximum RMS current flowing through it. In this work, an analytical expression for capacitor RMS current

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29

Hering, Maria. "Überschlagsverhalten von Gas-Feststoff-Isoliersystemen unter Gleichspannungsbelastung." Doctoral thesis, 2015. https://tud.qucosa.de/id/qucosa%3A29421.

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Gasisolierte Systeme im Gleichspannungsbetrieb vereinen für Anwendungen moderner Energieübertragung die Forderungen nach kleinräumigen Anlagen und verlustarmem Energietransport über große Entfernungen. Für einen zuverlässigen und sicheren Betrieb muss das Verhalten der eingesetzten Gas-Feststoff-Isolierung im technologischen System bis an die Grenzen des Isolationsvermögens bekannt sein. Gegenstand der vorliegenden Arbeit ist deshalb das Überschlagsverhalten von Gas-Feststoff-Isoliersystemen unter Gleichspannungsbelastung. Dabei stehen zwei wesentliche Einflussfaktoren im Vordergrund: die Temp

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