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Teses / dissertações sobre o tema "High-Current pulse"

Autor: Grafiati

Publicado: 7 de dezembro de 2024

Última modificação: 31 de julho de 2025

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1

Palomera-Arias, Rogelio 1972. "PIN diode switch circuit for short time high current pulse signal." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47505.

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2

Lanz, B. (Brigitte). "Compact current pulse-pumped GaAs–AlGaAs laser diode structures for generating high peak-power (1–50 watt) picosecond-range single optical pulses." Doctoral thesis, Oulun yliopisto, 2016. http://urn.fi/urn:isbn:9789526213569.

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Abstract Although gain-switching is a simple, well-established technique for obtaining ultrashort optical pulses generated with laser diodes, the optical energy in a pulse achievable from commercial structures using this technique is no more than moderate and the ‘spiking’ behaviour seen at turn-on is likely to evolve into trailing oscillations. This thesis investigates, develops and improves laser diodes in order to offer experimentally verified solutions for maximizing the optical energy so as to achieve a peak power of several watts in a single optical pulse of picosecond-range duration in

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3

Bendixsen, Luis Sebastian Caballero. "The design and construction of a compact, high-current pulsed power generator based on multiple low impedance pulse forming lines and networks." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526548.

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4

Bloomfield, Aaron Paul. "A High Frequency Alternating Current Battery Heater for Military Vehicles." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1302312903.

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5

Gamir, Luis Palafox. "A new method for the determination of the entry position of #gamma#-rays in high purity germanium detectors by current pulse analysis." Thesis, Cranfield University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387640.

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6

Palafox, Gamir Luis. "A new method for the determination of the entry position of γ-rays [gamma rays] in high purity germanium detectors by current pulse analysis". Thesis, Cranfield University, 1997. http://dspace.lib.cranfield.ac.uk/handle/1826/850.

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A new method for determining the entry point of gamma-rays in closed ended HPGe detectors has been developed. Exploiting the position dependence shown by the current pulses generated when a gamma-ray interacts with the detector, it is possible to electronically divide the crystal in the radial coordinate and thus increase the effective granularity of the detector. Position resolution is particularly important for correcting the Doppler peak broadening observed in many in-beam gamma-spectroscopy experiments. Position resolution within coaxial crystals is accomplished by combining the angular in

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7

Palafox, Gamir Luis. "A new method for the determination of the entry position of y-rays [gamma rays] in high purity germanium detectors by current pulse analysis." Thesis, Cranfield University, 1997. http://hdl.handle.net/1826/850.

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A new method for determining the entry point of gamma-rays in closed ended HPGe detectors has been developed. Exploiting the position dependence shown by the current pulses generated when a gamma-ray interacts with the detector, it is possible to electronically divide the crystal in the radial coordinate and thus increase the effective granularity of the detector. Position resolution is particularly important for correcting the Doppler peak broadening observed in many in-beam gamma-spectroscopy experiments. Position resolution within coaxial crystals is accomplished by combining the angular in

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8

Hinde, David Derek. "Corona discharges on the surfaces of high voltage composite insulators." Thesis, Queensland University of Technology, 2009. https://eprints.qut.edu.au/29320/2/David_Hinde_Thesis.pdf.

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The degradation of high voltage electrical insulation is a prime factor that can significantly influence the reliability performance and the costs of maintaining high voltage electricity networks. Little information is known about the system of localized degradation from corona discharges on the relatively new silicone rubber sheathed composite insulators that are now being widely used in high voltage applications. This current work focuses on the fundamental principles of electrical corona discharge phenomena to provide further insights to where damaging surface discharges may localize and e

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9

Hinde, David Derek. "Corona discharges on the surfaces of high voltage composite insulators." Queensland University of Technology, 2009. http://eprints.qut.edu.au/29320/.

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The degradation of high voltage electrical insulation is a prime factor that can significantly influence the reliability performance and the costs of maintaining high voltage electricity networks. Little information is known about the system of localized degradation from corona discharges on the relatively new silicone rubber sheathed composite insulators that are now being widely used in high voltage applications. This current work focuses on the fundamental principles of electrical corona discharge phenomena to provide further insights to where damaging surface discharges may localize and e

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10

Shahriari, Ejlal. "Commutateurs à semi-conducteurs rapides et à courant élevé pour les applications de puissance pulsée." Electronic Thesis or Diss., Pau, 2024. https://theses.hal.science/tel-04818494.

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Des impulsions de courant d'amplitude élevée (plusieurs centaines de kA) dans la gamme des microsecondes peuvent être appliquées pour générer des champs magnétiques de l'ordre du mégagauss. Cette technologie relative au domaine des haute puissances pulsées a été utilisée pour des travaux de recherche sur la fusion par confinement inertiel, le X-pinch ou la physique des hautes densités d'énergie. De plus, un certain nombre d'applications industrielles telles que le soudage par impulsion magnétique et la fracturation des roches nécessitent une puissance moyenne élevée, une répétabilité et un gén

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11

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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12

Mejecaze, Guillaume. "Analyse des destructions d'alimentations électroniques soumises à un courant impulsionnel fort niveau." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0204.

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Depuis plus d'une trentaine d'années, la menace d'impulsion électromagnétique provoquée par une explosion à haute altitude (IEMN-HA) d'une arme nucléaire est un sujet d'actualité avec les préoccupations croissantes de sécurité. L'IEMN-HA se couple de manière privilégiée sur les lignes aériennes de distribution en électricité permettant d'alimenter les habitations et les usines. Une fois couplée à ces lignes, la contrainte générée peut alors se propager de façon conduite jusqu'aux premiers systèmes qu'elle rencontrera, et les perturber voire les détruire. Dans la majorité des cas, ces systèmes

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13

Chazottes-Leconte, Aurélien. "Conception et fabrication d'un dispositif de mise en compression par impulsions électro magnétiques (EMP)." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1082.

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Les procédés de traitement de surface sont utilisés à l'échelle industrielle pour améliorer les performances de pièces mécaniques en introduisant des contraintes résiduelles de compression. Cette mise en compression de surface permet de limiter l'amorçage et la propagation de fissures dans le matériau. Ceci permet d'augmenter de façon significative la durée de vie en fatigue des pièces mécaniques ainsi traitées. L'utilisation de ces procédés dans l'industrie a démontré leur efficacité, mais aussi leurs limitations et inconvénients. Les défauts récurrents consistent en une profondeur traitée fa

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14

Alexander, Eric Douglas. "Pulsed-Power Busbar Design for High-Powered Applications." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/71329.

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The use of high-powered electrical energy systems requires an efficient and capable means to move electrical energy from one location to another while reducing energy losses. This paper describes the design and construction process of a high-powered busbar system that is to be implemented in pulsed-power applications. In order to obtain a robust system capable of handling in excess of 25kJ, both mechanical and electrical analyses were performed to verify a capable design. The following methodology describes how the Lorentz force was balanced with mechanical forces during the design process and

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15

Welsh, David S. "Current density limitations in a fast-pulsed high-voltage vacuum diode." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23850.

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Approved for public release: distribution is unlimited.<br>An investigation into the limitations on the enhanced field-emitted current density in a fast-pulsed (rise-time = ns), high voltage (> 106 V), 1-inch vacuum diode was conducted using a computer simulation based on the Fowler-Nordheim equation. Oscillations in the emitted current density (due to the change in the amount of space charge within the gap) were found to quickly decay into a final steady-state for the voltages applied. Steady-state values for a wide variety of work functions, electric field enhancement factors (based on

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16

Веселова, Надія Вікторівна. "Становлення і розвиток харківських наукових шкіл у галузі техніки та електрофізика високих напруг (1930–2010 рр.)". Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17177.

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Дисертація на здобуття наукового ступеня кандидата історичних наук за спеціальністю 07.00.07 – історія науки і техніки. – Національний технічний університет "Харківський політехнічний інститут". – Харків, 2015. У дисертації комплексно досліджується створення та розвиток харківських наукових шкіл у галузі техніки та електрофізики високих напруг у 1930–2010 рр. В роботі визначені харківські наукові школи в цій галузі, а саме: наукова школа високовольтних прискорювачів в УФТІ, яку очолив академік АН УРСР А. К. Вальтер; наукова школа техніки високих напруг ХПІ, засновником якої став академік АН УР

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17

Howe, Daniel Steven. "A WIRELESS ELECTRICAL STIMULATION SYSTEMFOR WOUND HEALING THERAPYWITH BIPHASIC HIGH-VOLTAGE PULSED CURRENT OUTPUT." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1365179992.

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18

Zhang, Xiangdong. "Surface modification of Ti- and Ni-base alloys by High Current Pulsed Electron Beam." Thesis, Metz, 2011. http://www.theses.fr/2011METZ008S.

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Modification de surface des alliages à base de Ti et de Ni par faisceau d'électrons de haute courant pulsé a été effectuée avec des intentions de la compréhension de la modification de la couche fondue et les mécanismes de pénétration de trempe que les deux devraient dépendre de la nature du matériau et son orientation. Il a été constaté que α 'ou α''martensite a été formée sur la surface Ti alliage traité. Le taux de refroidissement a été estimée en utilisant la taille des grains avant-β dans les alliages Ti TA15. Le niveau de stress induit par le traitement HCPEB a été estimée en utilisant l

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19

Веселова, Надія Вікторівна. "Становлення і розвиток харківських наукових шкіл у галузі техніки та електрофізика високих напруг (1930–2010 рр.)". Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17176.

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Дисертація на здобуття наукового ступеня кандидата історичних наук за спеціальністю 07.00.07 – історія науки і техніки. – Національний технічний університет "Харківський політехнічний інститут". – Харків, 2015. У дисертації комплексно досліджується створення та розвиток харківських наукових шкіл у галузі техніки та електрофізики високих напруг у 1930–2010 рр. В роботі визначені харківські наукові школи в цій галузі, а саме: наукова школа високовольтних прискорювачів в УФТІ, яку очолив академік АН УРСР А. К. Вальтер; наукова школа техніки високих напруг ХПІ, засновником якої став академік АН У

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20

Wu, Jiang. "Nanostructures of Zr-based bulk metallic glasses : induced by ball milling and high-current pulsed electron beams." Thesis, Metz, 2010. http://www.theses.fr/2010METZ022S.

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Contrairement aux métaux conventionnels, les verres métalliques amorphes présentent des arrangements atomiques à courte distante. Ce résultat conduit à des propriétés physiques et chimiques fondamentalement différentes de leurs homologues cristallins. Cette étude porte sur la caractérisation et la compréhension de la nanocristallisation de verres métalliques amorphes massifs (BMG) Zr-Al-Ni-Cu induite par traitement thermique, broyage mécanique et faisceaux d’électrons pulsés à fort courant (HCPEB). Deux alliages amorphes massifs ont été cristallisés par broyage mécanique et HCPEB : le classiqu

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21

Cimmperman, Piotras. "Plonųjų manganitų sluoksnių tyrimas stipriuose impulsiniuose elektriniuose ir magnetiniuose laukuose." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20061003_100516-61918.

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The main aim of this work was to investigate electrical conductivity of La-Ca(Sr)-MnO thin films at high pulsed electric and magnetic fields and to clear up the possibilities to use these materials for high pulsed magnetic field sensor and fault current limiter applications. The dissertation consists of the preface, six chapters, summary and main conclusions, references, list of publications and abstract (in Lithuanian). The main objectives of the work, scientific novelty, goals, validation of results, and statements for defense are presented in the preface. Chapter 1 presents an introduction

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22

Zou, Jianxin. "Mécanismes fondamentaux du traitement de surfaces par bombardements électroniques pulsés : application aux matériaux métalliques et intermétalliques." Metz, 2007. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/2007/Zou.Jianxim.SMZ0718.pdf.

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La technique de "High-Current Pulsed Electron Beam" (HCPEB) a été développée récemment pour le traitement de surface des matériaux. Des impulsions très courtes avec une importante densité d'énergie d'électrons induisent des cycles thermo-mécaniques ultra-rapides en surface. Ces cycles peuvent conduire à la fusion - voir éventuellement à l'évaporation - de la couche superficielle ainsi qu'à la formation d’un champ de contrainte dynamique qui est à l’origine d’une déformation intense en sous-couche. Ce manuscrit propose une revue des développements récents concernant la technique HCPEB qui ont é

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23

Saleh, Paul Matthew. "Characterisation of practical high temperature superconductors in pulsed magnetic fields and development of associated technology." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365786.

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24

Ghasemi, Negareh. "Improving ultrasound excitation systems using a flexible power supply with adjustable voltage and frequency to drive piezoelectric transducers." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/61091/1/Negareh_Ghasemi_Thesis.pdf.

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The ability of a piezoelectric transducer in energy conversion is rapidly expanding in several applications. Some of the industrial applications for which a high power ultrasound transducer can be used are surface cleaning, water treatment, plastic welding and food sterilization. Also, a high power ultrasound transducer plays a great role in biomedical applications such as diagnostic and therapeutic applications. An ultrasound transducer is usually applied to convert electrical energy to mechanical energy and vice versa. In some high power ultrasound system, ultrasound transducers are applied

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25

Allard, Florian. "Etude de nouvelles architectures modulaires d'alimentations électriques pour les applications de hautes puissances pulsées." Thesis, Pau, 2018. http://www.theses.fr/2018PAUU3005/document.

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De nos jours, pour accroître le potentiel applicatif des machines de hautes puissances pulsées, il est nécessaire de développer des modulateurs compacts capables de délivrer des impulsions de l’ordre de plusieurs Mégawatts de durée pouvant atteindre plusieurs centaines de microsecondes. Cette amélioration requiert le développement de structures innovantes dont le but est de produire aussi bien des puissances moyennes que des puissances crêtes importantes. Les modulateurs étudiés dans ce mémoire sont basés sur l’utilisation de divers transformateurs pour la génération d’impulsions de très forte

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26

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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27

Nami, Alireza. "A new multilevel converter configuration for high power and high quality applications." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/33216/1/Alireza_Nami_Thesis.pdf.

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The Queensland University of Technology (QUT) allows the presentation of theses for the Degree of Doctor of Philosophy in the format of published or submitted papers, where such papers have been published, accepted or submitted during the period of candidature. This thesis is composed of ten published /submitted papers and book chapters of which nine have been published and one is under review. This project is financially supported by an Australian Research Council (ARC) Discovery Grant with the aim of investigating multilevel topologies for high quality and high power applications, with speci

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28

Weber, Johannes [Verfasser], Linus [Akademischer Betreuer] Maurer, Linus [Gutachter] Maurer, and Robert [Gutachter] Weigel. "Pulsed High Current Characterization of Highly Integrated Circuits and Systems / Johannes Weber ; Gutachter: Linus Maurer, Robert Weigel ; Akademischer Betreuer: Linus Maurer ; Universität der Bundeswehr München, Fakultät für Elektrotechnik und Informationstechnik." Neubiberg : Universitätsbibliothek der Universität der Bundeswehr München, 2019. http://d-nb.info/1201593816/34.

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29

Weber, Johannes [Verfasser], Linus [Akademischer Betreuer] Maurer, Linus Gutachter] Maurer, and Robert [Gutachter] [Weigel. "Pulsed High Current Characterization of Highly Integrated Circuits and Systems / Johannes Weber ; Gutachter: Linus Maurer, Robert Weigel ; Akademischer Betreuer: Linus Maurer ; Universität der Bundeswehr München, Fakultät für Elektrotechnik und Informationstechnik." Neubiberg : Universitätsbibliothek der Universität der Bundeswehr München, 2019. http://nbn-resolving.de/urn:nbn:de:bvb:706-6303.

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30

Tajalli, Alaleh. "Characterization and Study of Reliability Aspects in GaN High ElectronMobility Transistors." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3427319.

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GaN-based high electron mobility transistors (HEMTs) have excellent performance for power applications. Indeed, characteristics such as the high breakdown electric filed (3.3 MV/cm), the low ON-Resistance (RON) and the good thermal dissipation make the GaN-based diode and transistor a good potential for high frequency and power applications. The other outstanding feature of GaN-based HEMTs is the high electron mobility (1200 cm2/V.s) of the 2-dimensional electron gas (2DEG), formed at the interface between AlGaN and GaN, which leads to a low channel resistance and a high current density. This

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31

Weerasekara, Aruna Bandara. "Electrical and Optical Characterization of Group III-V Heterostructures with Emphasis on Terahertz Devices." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/phy_astr_diss/16.

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Electrical and optical characterizations of heterostructures and thin ﬁlms based on group III-V compound semiconductors are presented. Optical properties of GaMnN thin ﬁlms grown by Metalorganic Chemical Vapor Deposition (MOCVD) on GaN/Sapphire templates were investigated using IR reﬂection spectroscopy. Experimental reﬂection spectra were ﬁtted using a non - linear ﬁtting algorithm, and the high frequency dielectric constant (ε∞), optical phonon frequencies of E1(TO) and E1(LO), and their oscillator strengths (S) and broadening constants (Γ) were obtained for GaMnN thin ﬁlms with different Mn

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32

Tobolová, Marie. "Mikrostimulátor." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219499.

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The theoretical part of the thesis deals with the explanation of the actions that occur during the stimulation of tissues with the electric current. A significant analogy with electrical circuits is used to describe the phenomena at the molecular and cellular level. The models of membrane and cell are necessary for understanding the behaviour of more complex structures, such as tissues and organs. A considerable attention is paid to the conditions of electrical stimulation which bring about response in the stimulated area. Next, the cumulative effect of the subthreshold stimulation is analysed

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33

Aboelhassan, Mustafa Osman Elrayah. "Robustní řízení synchronního stroje s permanentními magnety a spínaným tokem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-233605.

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Je jasné, že nejúspěšnější konstrukce zahrnuje postup vícefázového řízení, ve kterém každá fáze může být považována za samostatný modul. Provoz kterékoliv z jednotek musí mít minimální vliv na ostatní, a to tak, že v případě selhání jedné jednotky ostatní mohou být v provozu neovlivněny. Modulární řešení vyžaduje minimální elektrické, magnetické a tepelné ovlivnění mezi fázemi řízení (měniče). Synchronní stroje s pulzním tokem a permanentními magnety se jeví jako atraktivní typ stroje, jejíž přednostmi jsou vysoký kroutící moment, jednoduchá a robustní konstrukce rotoru a skutečnost, že perman

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34

Zhou, Hua. "Harmonic current control in a high-power current source rectifier system." Master's thesis, 2011. http://hdl.handle.net/10048/1702.

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Line current distortion is an important issue to a high-power current source rectifier(CSR) system. There are two main challenges related to this issue. First, the CSR input LC resonance can be affected by the variation of the source inductance from the power system and the effects of the CSR DC side circuit, which may lead to a line current distortion higher than expected. Another challenge is that the traditional high-power CSR using Selective Harmonic Elimination (SHE) pulse-width modulation (PWM) technique attempts to eliminate certain harmonics in the PWM current, which limits its ability

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35

Chao, Kuan-Yu, and 趙冠宇. "Nickel Hexacyanoferrate-Modified LiFePO4 Cathodes with High-Rate and High-Pulse Current Charge-Discharge Capabilities." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/57004706193694668747.

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碩士<br>逢甲大學<br>綠色能源科技碩士學位學程<br>104<br>Nickel hexacyanoferrate (NiHCF) was synthesized by reverse micelle method and was coated on LiFePO4 (LFP) cathodes to improve the high-rate and pulse-current charge-discharge performances. This NiHCF has a low-strain open framework structure and exhibits a redox potential similar to that of LFP. The NiHCF-modified LFP cathodes show improved high-rate capability, with a 10 C discharge capacity that is 15% higher than that of pristine LFP. The NiHCF-modified LFP can endure high-pulse current charge-discharge, which is well suited for green energy grids. The m

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Ma, Yu-Sheng, and 馬佑昇. "A Digital-Type GaN Driver with Current-Pulse-Balancer Technique Achieving Sub-nanosecond Current Pulse Width for High Resolution and Dynamic Effective Range LiDAR System." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/e7ysm8.

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YANG, FU-KUO, and 楊富國. "White LED Driver with High Current Matching and Pulse-Width-Modulation Brightness Control." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/7y7v74.

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碩士<br>國立臺北科技大學<br>電腦與通訊研究所<br>96<br>The use of white LED can accord with the current issue in energy saving and environmental protection in the world. Due to the features of small size and longer life, this LED is widely used in the backlight of portable device display. The backlight can change the life time of battery and the brightness of display. In the thesis, switching mode boost DC-DC converter can make higher efficiency, and current sensing circuit can increase current matching of each output, and make the brightness of every white LED lightbulbs uniform. The structure of whole syste

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Ling, Kian Siong. "A PWM (pulse width modulated) transconductance amplifier for high current numerical protective relay testing." 2006. http://hdl.handle.net/1993/20820.

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唐, 永鹏, and Yongpeng TANG. "A study on restoration of fatigue damage in stainless steel by high-density pulse current." Thesis, 2013. http://hdl.handle.net/2237/19335.

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Sivaprasad, Sreenivasa J. "Control, Modulation and Testing of High-Power Pulse Width Modulated Converters." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3310.

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Experimental research on high-power converters, particularly in an academic environment, faces severe infrastructural constraints. Usually, power source and loads of required ratings are not available. Further, more importantly, the energy consumption is huge. One possibility is to establish an experimental research platform, comprising of a network of high-power converters, through which power is circulated and which draws only the losses from the mains. This work deals with the establishment of a circulating power test set-up, comprising of two line-side PWM converters, inclusive of contro

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Sivaprasad, Sreenivasa J. "Control, Modulation and Testing of High-Power Pulse Width Modulated Converters." Thesis, 2013. http://etd.iisc.ernet.in/2005/3310.

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Experimental research on high-power converters, particularly in an academic environment, faces severe infrastructural constraints. Usually, power source and loads of required ratings are not available. Further, more importantly, the energy consumption is huge. One possibility is to establish an experimental research platform, comprising of a network of high-power converters, through which power is circulated and which draws only the losses from the mains. This work deals with the establishment of a circulating power test set-up, comprising of two line-side PWM converters, inclusive of contro

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Shao, Zhen-Ting, and 邵振庭. "Study and Implementation of A Boost Converter with Low Current Ripple and High Voltage Gain Based on Complementary Single-Sided Multiple Pulse Width Modulation." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/13760487010847230289.

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碩士<br>國立中央大學<br>電機工程學系<br>104<br>The thesis presents an improved non-isolated boost DC-DC converter. The boost DC-DC converter has been widely applied on renewable generation and energy storage. Improved circuit proposed in this thesis is divided into two stages through three IGBT switches to perform the control. The first stage is a modified circuit architecture of the input current ripple complementary boost converter. The current ripple through two switches can be effectively reduced by inversely operating. This approach not only enables a more stable input source but also reduces the high

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Σακκάς, Σωτήρης. "Ανάλυση συστήματος μεταφοράς με διασύνδεση Σ.Ρ. και PWM ρυθμιζόμενους μετατροπείς". Thesis, 2012. http://hdl.handle.net/10889/5757.

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Τα τελευταία χρόνια έχει αρχίσει να διαδίδεται με γρήγορους ρυθμούς η μέθοδος μεταφοράς ισχύος μέσω συνεχούς ρεύματος. Προς αυτή την κατεύθυνση ώθηση έδωσε η ανάπτυξη νέων ημιαγωγικών διακοπτικών στοιχείων οδηγώντας σε περεταίρω ανάπτυξη και χρήση των συστημάτων μεταφοράς με συνεχές ρεύμα. Σε αυτή τη διπλωματική εργασία μελετάται ένα σύστημα μεταφοράς ισχύος με διασύνδεση συνεχούς ρεύματος (HVDC), που συνδέεται ανάμεσα σε δυο εναλλασσόμενα ηλεκτρικά δίκτυα με και χωρίς φορτίο. Την διασύνδεση συνεχούς ρέματος πραγματοποιούν δυο back-to-back AC/DC μετατροπείς VSC, που αναλαμβάνουν τους ρόλους το

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Lukic, Zdravko. "Design and Practical Implementation of Advanced Reconfigurable Digital Controllers for Low-power Multi-phase DC-DC Converters." Thesis, 2012. http://hdl.handle.net/1807/33855.

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The main goal of this thesis is to develop practical digital controller architectures for multi-phase dc-dc converters utilized in low power (up to few hundred watts) and cost-sensitive applications. The proposed controllers are suitable for on-chip integration while being capable of providing advanced features, such as dynamic efficiency optimization, inductor current estimation, converter component identification, as well as combined dynamic current sharing and fast transient response. The first part of this thesis addresses challenges related to the practical implementation of digital cont

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