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Dissertations / Theses on the topic 'Pulsed power generator'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Wang, Meng. "A Tesla-Blumlein PFL-Bipolar pulsed power generator." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/22802.

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A Tesla-Blumlein PFL-Bipolar pulsed power generator, has been successfully designed, manufactured and demonstrated. The compact Tesla transformer that it employs has successfully charged capacitive loads to peak voltages up to 0.6 MV with an overall energy efficiency in excess of 90%. The Tesla driven Blumlein PFL generator is capable of producing a voltage impulse approaching 0.6 MV with a rise time close to 2 ns, generating a peak electrical power of up to 10 GW for 5 ns when connected to a 30 Ω resistive load. Potentially for medical application, a bipolar former has been designed and succe

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2

Grenier, Jason. "Design of a MOSFET-Based Pulsed Power Supply for Electroporation." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/844.

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The use of high-voltage pulsed electric fields in biotechnology and medicine has lead to new methods of cancer treatment, gene therapy, drug delivery, and non-thermal inactivation of microorganisms. Regardless of the application, the objective is to open pores in the cell membrane and hence either facilitate the delivery of foreign materials inside the cell or to kill the cell completely. Pulsed power supplies are needed for electroporation, which is the process of applying pulsed electric fields to biological cells to induce a temporary permeability in the cell membrane. The application

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3

Kadja, Tchamie. "Chip Scale Tunable Nanosecond Pulsed Electric Field Generator for Electroporation." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1556028923379642.

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4

Lindblom, Adam. "Inductive Pulse Generation." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6699.

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5

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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6

Motloung, Setumo Victor. "Intense pulsed neutron generation based on the principle of Plasma Immersion Ion Implantation (PI3) technique." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9599_1182748458.

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<p>The development of a deuterium-deuterium/ tritium-deuterium (D-D/ D-T) pulsed neutron generator based on the principle of the Plasma Immersion Ion Implantation (PI3) technique is presented, in terms of investigating development of a compact system to generate an ultra short burst of mono-energetic neutrons (of order 1010 per second) during a short period of time (&lt<br>20&mu<br>s) at repetition rates up to 1 kHz. The system will facilitate neutron detection techniques, such as neutron back-scattering, neutron radiography and time-of-flight activation analysis.</p> <p><br /> Aspects address

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7

Drexler, Petr. "METODY MĚŘENÍ ULTRAKRÁTKÝCH NEPERIODICKÝCH ELEKTROMAGNETICKÝCH IMPULSŮ." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2007. http://www.nusl.cz/ntk/nusl-233412.

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This thesis deals with the aspects of methods for pulsed high-level EM quantities measurement. Methods for current and voltage measurement in pulsed power generator and power measurement in pulse microwave generator are discussed. New approaches to single-shot measurement methods application are proposed. The theoretical analysis of suitable sensor designs is performed. The magneto-optic measurement method has been experimentally realized. On the basis of experimental results a fiber-optic current sensor has been designed and theoretically analyzed. For identification and measurement of the fr

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8

Rondani, Bruno. "Projeto, desenvolvimento e construção de um modulador de pulso estado-solido para transmissores pulsados de alta potencia." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261786.

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Orientador: Jose Antenor Pomilio<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-06T14:09:31Z (GMT). No. of bitstreams: 1 Rondani_Bruno_M.pdf: 5870538 bytes, checksum: 69f2b2bd154400cd5b620b87a2c4fe8c (MD5) Previous issue date: 2005<br>Resumo: Descreve-se neste trabalho o desenvolvimento de uma topologia de modulador de pulso estado-sólido e a linha de retardo modular, para aplicação em transmissores pulsados de alta potência que utilizem válvulas de microondas magnetron empregadas comument

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9

Ure, K. A. N. "The generation of short, tunable high power optical pulses." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383874.

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10

Takayanagi, Jun, Norihiko Nishizawa, Hiroyuki Nagai, Makoto Yoshida, and Toshio Goto. "Generation of high-power femtosecond pulse and octave-spanning ultrabroad supercontinuum using all-fiber system." IEEE, 2005. http://hdl.handle.net/2237/6770.

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11

Marsden, Kevin Matthew. "A Study of a Versatile Low Power CMOS Pulse Generator for Ultra Wideband Radios." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9754.

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Ultra-Wideband (UWB) technologies are at the forefront of wireless communications, offering the possibility to provide extremely high data rate wireless solutions. In addition to high data rate applications, UWB technologies also offer an extremely low cost alternative for many low data rate systems. In this thesis, we describe the design of a CMOS pulse generator for impulse based UWB systems. The structure of our pulse generator is based on the topology of a single tap CMOS power amplifier. By increasing the number of taps on a CMOS power amplifier, it is possible to generate sub-nanosecond

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12

Laurain, Alexandre, Declan Marah, Robert Rockmore, et al. "High power sub-200fs pulse generation from a colliding pulse modelocked VECSEL." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/625500.

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We present a passive and robust mode-locking scheme for a Vertical External Cavity Surface Emitting Laser (VECSEL). We placed the semiconductor gain medium and the semiconductor saturable absorber mirror (SESAM) strategically in a ring cavity to provide a stable colliding pulse operation. With this cavity geometry, the two counter propagating pulses synchronize on the SESAM to saturate the absorber together. This minimizes the energy lost and creates a transient carrier grating due to the interference of the two beams. The interaction of the two counter-propagating pulses in the SESAM is shown

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13

Nikitichev, Daniil I. "High power ultra-short pulse quantum-dot lasers." Thesis, University of Dundee, 2012. https://discovery.dundee.ac.uk/en/studentTheses/b7cec111-5ed7-4020-9fad-794d817e8f61.

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In this thesis, novel multi-section laser diodes based on quantum-dot material are designed and investigated which exhibit a number of advantages such as low threshold current density; temperature-insensitivity and suppress carrier diffusion due to discrete nature of density of state of quantum-dots. The spectral versatility in the range of 1.1 µm – 1.3 µm wavelengths is demonstrated through novel mode-locking regimes such as dual-wavelength mode-locking, wavelength bistability and broad tunability. Moreover, broad pulse repetition rate tuning using an external cavity configuration is presente

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14

Sali, Emiliano. "Broadband nonlinear processes for high-power ultra short pulse generation." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412572.

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15

Chen, Zhao S. M. Massachusetts Institute of Technology Department of Chemistry. "Generation of high power single-cycle and multiple-cycle terahertz pulses." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79269.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 131-141).<br>In this thesis, we present experimental methods and results of tabletop generation of high power single-cycle and frequency-tunable multiple-cycle terahertz (THz) pulses pumped with near-infrared ultrashort optical pulses at 1 kHz and 10 Hz repetition rates. Single-cycle THz pulses with sub-picosecond duration and more than 50 pJ pulse energy, and multiple-cycle THz pulses with picosecond duration and more than 10 pJ pu

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16

Kim, Jong Wan. "Back to Back Active Power Filter for Multi-Generator Power Architecture with Reduced dc-link Capacitor." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96638.

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Multi-pulse converters have been widely used for a multi-megawatt scale power generating system to comply with harmonic regulations. Among all types of multi-pulse converters, a 12-pulse converter is the most widely used due to the simple structure, which consists of a delta-delta and a delta-wye phase-shift transformer pair and it effectively mitigates undesirable harmonics from the nonlinear load. In the early 2000s, a shunt type passive front-end for a shipboard power system was proposed. By shunting the two gensets with 30° phase angle difference, a single phase-shift transformer effecti

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17

Leigh, Matthew. "HIGH POWER PULSED FIBER LASER SOURCES AND THEIR USE IN TERAHERTZ GENERATION&#8194." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/193797.

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In this dissertation I report the development of high power pulsed fiber laser systems. These systems utilize phosphate glass fiber for active elements, instead of the industry-standard silica fiber. Because the phosphate glass allows for much higher doping of rare-earth ions than silica fibers, much shorter phosphate fibers can be used to achieve the same gain as longer silica fibers.This single-frequency laser technology was used to develop an all-fiber actively Q-switched fiber lasers. A short cavity is used to create large spacing between longitudinal modes. Using this method, we demon

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18

Fang, Qiang. "2 μm Pulsed Fiber Laser Sources and Their Application in Terahertz Generation". Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/232475.

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In this dissertation, an all-fiber-based single frequency nanosecond pulsed laser system at ~ 1918.4 nm in master-oscillator-power-amplifier (MOPA) configuration is present. The nanosecond pulse seed is achieved by directly modulating a continuous wave (CW) single frequency fiber laser using a fast electro-optical modulator (EOM) driven by an arbitrary waveform generator (AWG). One piece of single mode, large core, polarization-maintaining (PM) highly thulium-doped (Tm-doped) germanate glass fiber (LC-TGF) is used to boost the pulse power and pulse energy of these modulated pulses in the final

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19

Darling, Jamie. "High power pulsed RF generation by soliton type oscillation on nonlinear lumped element transmission lines." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526556.

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20

Appelgren, Patrik. "Experiments with and modelling of explosively driven mangetic flux compression generators." Licentiate thesis, KTH, Rymd- och plasmafysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9638.

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This thesis presents work performed on explosively driven magnetic flux compression generators. This kind of devices converts the chemically stored energy in a high explosive into electromagnetic energy in the form of a powerful current pulse. The high energy density of the high explosives makes flux compression generators attractive as compact power sources. In order to study these devices a generator was designed at FOI in the mid-90ies. Two generators remained unused and became available for this licentiate work. The thesis reports experiments with, and simulations of, the operation of the

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21

Guo, Xuhan. "Generation of ultrashort optical pulses with high peak power by monolithic laser diodes." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648571.

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22

Sedlock, Steve. "Design and analysis of an integrated pulse modulated S-band power amplifier in gallium nitride process." Thesis, Kansas State University, 2012. http://hdl.handle.net/2097/13697.

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Master of Science<br>Department of Electrical and Computer Engineering<br>William B. Kuhn<br>The design of power amplifiers in any semi-conductor process is not a trivial exercise and it is often encountered that the simulated solution is significantly different than the results obtained. Oscillatory phenomena occurring either in-band or out of band and sometimes at subharmonic intervals can render a design useless. Other less apparent effects such as jumps, hysteresis and continuous spectrum, often referred to as chaos, can also invalidate a design. All of these problems might have been ident

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23

Wang, Haochuan [Verfasser], and Ferenc [Akademischer Betreuer] Krausz. "High-energy and high-power multi-octave pulse generation / Haochuan Wang ; Betreuer: Ferenc Krausz." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1223849872/34.

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24

Jin, Hanbing. "Particle-in-Cell Simulation of Electromagnetic Pulse Generated by High-power Laser-target Interaction." Thesis, KTH, Fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231339.

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25

Dai, Min. "Control of power converters for distributed generation applications." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1124329850.

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26

Kaumanns, Reimund Martin [Verfasser], and Ferenc [Akademischer Betreuer] Krausz. "Generation of energetic femtosecond pulses at high average power / Reimund Martin Kaumanns ; Betreuer: Ferenc Krausz." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1206878312/34.

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27

Scurria, Giuseppe. "High power 2 μm fiber laser for mid-infrared supercontinuum generation in fluoride fibers". Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0342.

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Le développement de sources optiques ayant une forte brillance et un large spectre est nécessaire pour différentes applications telles que les contremesures optroniques, les systèmes LIDAR et la spectroscopie. Ce travail de thèse est consacré à l'étude de la génération de supercontinuum de forte puissance dans le domaine spectral allant de 2 à 5 μm. Un laser à fibre dopé thulium, émettant à 2 μm, a été réalisé et caractérisé en régimes continu, déclenché et à verrouillage de modes déclenchés. En régime continu, une puissance de 45 W a été atteinte avec un rendement différentiel de 58%. L'intég

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28

Choi, Myoung-Taek. "ULTRASHORT, HIGH POWER, AND ULTRALOW NOISE MODE-LOCKED OPTICAL PULSE GENERATION USING QUANTUM-DOT SEMICONDUCTOR LASERS." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3942.

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This dissertation explores various aspects and potential of optical pulse generation based on active, passive, and hybrid mode-locked quantum dot semiconductor lasers with target applications such as optical interconnect and high speed signal processing. Design guidelines are developed for the single mode operation with suppressed reflection from waveguide discontinuities. The device fabrication procedure is explained, followed by characteristics of FP laser, SOA, and monolithic two-section devices. Short pulse generation from an external cavity mode-locked QD two-section diode laser is studie

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29

Rim, Geun-hie. "Variable speed constant frequency power conversion with permanent magnet synchronous and switched reluctance generators." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/40015.

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30

Rosado, Sebastian Pedro. "Voltage Stability and Control in Autonomous Electric Power Systems with Variable Frequency." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/29616.

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This work focuses on the safe and stable operation of an autonomous power system interconnecting an AC source with various types of power electronic loads. The stability of these systems is a challenge due to the inherent nonlinearity of the circuits involved. Traditionally, the stability analysis in this type of power systems has been approached by means of small-signal methodology derived from the Nyquist stability criterion. The small-signal analysis combined with physical insight and the adoption of safety margins is sufficient, in many cases, to achieve a stable operation with an acceptab

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31

Woodburn, David. "Modeling and Simulation of All-electric Aircraft Power Generation and Actuation." Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6037.

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Modern aircraft, military and commercial, rely extensively on hydraulic systems. However, there is great interest in the avionics community to replace hydraulic systems with electric systems. There are physical challenges to replacing hydraulic actuators with electromechanical actuators (EMAs), especially for flight control surface actuation. These include dynamic heat generation and power management. Simulation is seen as a powerful tool in making the transition to all-electric aircraft by predicting the dynamic heat generated and the power flow in the EMA. Chapter 2 of this dissertation des

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32

Lee, Sang Min. "A CMOS analog pulse compressor with a low-power analog-to-digital converter for MIMO radar applications." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/42875.

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Multiple-input multiple-output (MIMO) radars, which utilize multiple transmitters and receivers to send and receive independent waveforms, have been actively investigated as a next generation radar technology inspired by MIMO techniques in communication theory. Complementary metal-oxide-semiconductor (CMOS) technology offers an opportunity for dramatic cost and size reduction for a MIMO array. However, the resulting formidable signal processing burden has not been addressed properly and remains a challenge. On the other hand, from a block-level point of view, an analog-to-digital converter (AD

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33

Petraviciute-Lötscher, Lauryna [Verfasser], and Ferenc [Akademischer Betreuer] Krausz. "High-power ultrafast light : generation of 1 ps-to-70 fs, 5 mJ-to-mikroJ pulses and low-harmonic-generation at high repetition rate / Lauryna Petraviciute-Lötscher ; Betreuer: Ferenc Krausz." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1211957683/34.

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34

Vauché, Rémy. "Conception de générateurs d'impulsions ultra-large bande en technologie CMOS." Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10098.

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La théorie de l'information développée par Claude Shannon (1916 - 2001) met en évidence le fait que pour accroître la capacité d'un canal de transmission, il est préférable d'élargir la bande de fréquences sur laquelle les informations sont émises plutôt que les puissances d'émissions. Cette constatation est le point de départ de nombreux travaux de recherche sur les communications Ultra-Large Bande (ULB) qui ont abouti en 2002 à la création aux Etats-Unis d'une bande fréquence dîtes ULB où aucun mode de communication n'est privilégié. C'est ainsi que 2 années plus tard ont débuté à l'IM2NP de

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35

Resan, Bojan. "DISPERSION-MANAGED BREATHING-MODE SEMICONDUCTOR MODE-LOCKED RING LASER." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2907.

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A novel dispersion-managed breathing-mode semiconductor mode-locked ring laser is developed. The "breathing-mode" designation derives from the fact that intracavity pulses are alternately stretched and compressed as they circulate around the ring resonator. The pulses are stretched before entering the semiconductor gain medium to minimize the detrimental strong integrating self-phase modulation and to enable efficient pulse amplification. Subsequently compressed pulses facilitate bleaching the semiconductor saturable absorber. The intracavity pulse compression ratio is higher than 50. Down chi

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36

Baselt, Tobias, Christopher Taudt, Bryan Nelsen, Andrés Fabián Lasagni, and Peter Hartmann. "Development of a method to overcome the power threshold during supercontinuum generation based on an Yb-doped photonic crystal fiber." SPIE, 2017. https://tud.qucosa.de/id/qucosa%3A35385.

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Optical coherence tomography benefits from the high brightness and bandwidth, as well as the spatial coherence of supercontinuum (SC) sources. The increase of spectral power density (SPD) over conventional light sources leads to shorter measuring times and higher resolutions. For some applications, only a portion of the broad spectral range can be used. Therefore, an increase of the SPD in specific limited spectral regions would provide a clear advantage over spectral filtering. This study describes a method to increase the SPD of SC sources by amplifying the excitation wavelength inside of a

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37

Hamilton, Hymiar. "An impact study of DC protection techniques for shipboard power systems." Master's thesis, Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-07062007-144823.

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38

Jung, Jin Woo. "Modeling and control of fuel cell based distributed generation systems." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1116451881.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xvi, 209 p.; also includes graphics. Includes bibliographical references (p. 202-209). Available online via OhioLINK's ETD Center

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Streek, André. "Lasermikrosintern." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-231058.

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Die Arbeit analysiert das Lasermikrosintern von Metallen in seiner Gesamtheit durch kalkulierbare Modelle und Formulierungen. Hierfür wird der Sintervorgang in relevante Prozessschritte untergliedert. Die darauf aufbauenden Berechnungen der Prozessparameter werden in Form analytischer Ansätze und durch numerische Simulation analysiert. Anfänglich werden die Modelle der Einzelschritte und deren Resultate werden auf Übereinstimmung mit den experimentellen Daten und Beobachtungen geprüft. Hierbei dienen die Modelle, Algorithmen und analytischen Beziehungen als nachhaltiges Instrumentarium für Ana

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Dufernez, Bruno. "Étude et simulation numérique d'un cycloconvertisseur à commande entièrement numérique." Vandoeuvre-les-Nancy, INPL, 1992. http://www.theses.fr/1992INPL133N.

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Le travail présenté dans cette thèse a été réalisé au sein du groupe de recherches en électrotechnique et électronique de Nancy, en collaboration avec le centre de recherche en automatique de Nancy. Il s'agit d'une étude sur les cycloconvertisseurs et plus particulièrement sur la réalisation de la commande d'un cycloconvertisseur triphasé à 36 thyristors, entièrement numérique, sans courant de circulation et sans liaison de neutre. Cette commande numérique est basée sur un générateur d'impulsions de type allumeur à retard. L'étude a été réalisée principalement par simulation numérique. Le prog

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41

Haloua, Abderrahmane. "Étude d’un protocole de communication asynchrone faible consommation à lien radio impulsionnel ultra-large bande : implémentation sur silicium des fonctions RF critiques." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0255.

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Au cours des dernières années, différents travaux de recherche ont été consacrés à l’étude et au développement des solutions de type réseau de capteurs sans fil. Ces travaux sont une réponse à l’augmentation du nombre d’objets connectés dans le monde avec le développement de l’internet des objets. La consommation d’énergie dans les réseaux de capteurs représente un des domaines les plus étudiés. Les communications dans les réseaux de capteurs représentent une part importante de leur consommation. Afin de réduire la consommation des communications dans les réseaux de capteurs, différents niveau

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42

Novák, Pavel. "Konstrukční řešení modelu průtočné říční elektrárny." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228356.

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This thesis deals with designing a small hydraulic power plant, where a swirl turbine is conected to a unique synchronous working, which will offer a reliable and easy installation of the hydraulic power plant. As a result a wider potential of energy could be produced from renewable resources. The use of a narrow rottor as a holder of the permanent magnets is the biggest difficulties of this design.

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Moonesan, Mohammad Saleh. "Design and Implementation of IGBT Based Power Supply for Food Treatment." Thesis, 2011. http://hdl.handle.net/10012/6298.

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Pulsed electric field (PEF) processing has been demonstrated to be an effective non-thermal pasteurization method for food-treatment applications. With this method, high voltage, short-duration pulses are applied to a chamber through which liquid food is passed. If the voltage applied and the corresponding electric field develops a potential higher than a critical trans-membrane potential, the pores expand, and the membrane of the living cell is ruptured. Due to the lower amount of energy consumed during a PEF process, the temperature of the liquid is kept much lower than as opposed to convent

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Wisher, Matthew Louis. "MegaGauss : a portable 40T magnetic field generator." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-05-3498.

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Fusion neutrons from high energy density plasmas generated by pulsed laser irradiation of nanoscale atomic clusters have been explored in recent experiments at the University of Texas at Austin. A sufficiently strong (~200 T) magnetic field is expected to produce a magnetized, high temperature (10 keV) plasma with beta [approximately equal to] 1. Such a field along the laser axis may confine the plasma’s radial expansion, thus increasing fusion yield. As part of a multi-stage project to implement this experiment, a scaled (~40 T, ~500 KA) version of the final 200 T, 2.2 MA pulsed power device

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Hung, Min-hsuan, and 洪敏軒. "PULSE POWER GENERATOR FOR CARBON NANOTUBE FIELD EMISSION LAMP." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/58979314041590546689.

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碩士<br>大同大學<br>電機工程學系(所)<br>97<br>A flyback converter incorporating an energy recovery circuit is proposed to generate high voltage pulses for driving carbon nanotube field emission lamp (CNT-FEL). The employed energy recovery circuit will not only eliminate the arcing phenomenon caused by traditional DC driving, but also recover the excess energy to DC bus so as to improve the system efficiency. In this paper, we construct an equivalent model of the CNT-FEL to exhibit its electric characteristics. Moreover, the mathematical models of each operation mode are also derived. And then a complete de

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Pande, Manish. "Voltage controlled pulse width modulation pattern generators for static power converters." Thesis, 1993. http://spectrum.library.concordia.ca/5537/1/MM90807.pdf.

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Chang, Kuan-Yuan, and 張冠元. "Generation of high-power ultrashort laser pulses from high-power and ultra-broadband supercontinuum." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/4a632j.

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碩士<br>國立交通大學<br>光電系統研究所<br>107<br>In this study, we use supercontinuum to generate a high-power and ultrafast laser that has a center wavelength near 1.06 μm, which is different from that of the seed laser at 1.56 μm. To keep the system all-fiber, we use single-mode fibers of different cutoff wavelengths to construct a shortpass filter, instead of the commonly used reflective or transmissive filters in free space. As a result, laser pulses that have a center wavelength near 1.06 μm are filtered through. Then, we use a ytterbium-doped fiber amplifier to amplify the filtered pulses, scaling thei

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Yu, Yatong. "Design and Development of IGBT-Based Pulse Voltage Generator for Insulation Testing." Thesis, 2009. http://hdl.handle.net/10012/4815.

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With the desire for energy conservation and lower costs, the application of pulse-width modulated (PWM) voltage source converter (VSC) drives has grown at an exponential rate. However, due to their high switching frequency and high dv/dt, increased dielectric stresses and thermal stresses are applied to the insulation system of the motors, which may lead to the failure of the insulation. In order to test the performance of the motor insulation under the above complex stress conditions, an IGBT-based pulse voltage generator which can produce high voltage square wave and PWM waveforms has been s

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Li, Yue-Ying, and 李岳穎. "High-power Femtosecond Pulse Generation in a Chirped-Pulse Amplified Ytterbium-Doped Fiber Laser System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/61637106219008095724.

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碩士<br>國立清華大學<br>光電工程研究所<br>102<br>In this thesis, we demonstrated the chirped pulse amplification (CPA) of a high-power ytterbium-doped fiber amplifier at wavelength of 1064 nm without a stretcher. The all-normal dispersion (ANDi) passively mode-locked fiber laser is used to generate highly chirped seed pulse. Therefore, the pulse stretcher could be optional. The spectrum bandwidth of our ANDi fiber laser is 9 nm which can support 185-fs-width pulses. The actual output pulses width is 11.7 ps. In this case, it is equivalent to -60 times stretching of the seed pulses to reduce the peak power. A

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Wisher, Matthew Louis. "Pulsed magnetic field generation for experiments in high energy density plasmas." Thesis, 2014. http://hdl.handle.net/2152/25985.

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Experiments in high energy density (HED) plasma physics have become more accessible with the increasing availability of high-intensity pulsed lasers. Extending the experiment parameters to include magnetized HED plasmas requires a field source that can generate fields of order 100 tesla. This dissertation discusses the design and implementation of a pulsed field driver with a designed maximum of 2.2 MA from a 160 kJ capacitor bank. Faraday rotation measurement of 63 T for a 1.0 MA discharge supported Biot-Savart estimates for a single-turn coil with a 1 cm bore. After modification, the field d

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