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Dissertations / Theses on the topic 'AC/A'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Gebrehiwet, Gebregergis Abraham. "A three-phase AC/AC matrix converter system." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16324.

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Thesis (MScIng)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: The thesis discusses the analysis and design of a three-phase-to-three-phase direct AC-AC matrix converter. A background study of the various matrix converter topologies and their modulation strategies are presented. The associated PWM strategy of each matrix converter topology is investigated. In addition, a detailed explanation of the three safe commutation strategies is presented. The research focuses on the design and analysis of the direct AC-AC matrix converter topology. That includes the design of the main bi-

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2

Zhou, Binxin. "Control techniques for a three-phase to three-phase AC/AC matrix converter." Thesis, Heriot-Watt University, 2002. http://hdl.handle.net/10399/1145.

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3

Van, Schalkwyk Christine. "Analysis and design of a voltage regulator based on an AC-to-AC converter." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53254.

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Thesis (MScEng)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: This thesis discusses the analysis and design of a voltage regulator based on an AC-to-AC converter. A background study was performed on the best topology for the purpose. The chosen topology was analysed and the converter was designed in detail. A voltage sign-detector and an over-current detector were designed and built. They were used for control and protection. Three methods of control were investigated. The first was a slow but reliable method of computing the RMS value of the input voltage and then using that

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Iyer, Narayanaswamy P. R. "Modelling, simulation and real time implementation of a three phase AC to AC matrix converter." Thesis, Curtin University, 2012. http://hdl.handle.net/20.500.11937/1126.

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Matrix converters (MCs) are essentially forced commutated cycloconverters with inherent four quadrant operation consisting of a matrix of bidirectional switches such that there is a switch for each possible connection between the input and output lines. Matrix converter directly converts the AC input voltage at any given frequency to AC output voltage with arbitrary amplitude at any unrestricted frequency without the need for a dc link capacitor storage element at the input side.The introduction of bidirectional switches using power transistors and IGBTs made easy realization of the matrix con

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5

Corá, Luciana Aparecida [UNESP]. "A biosusceptometria AC aplicada à tecnologia farmacêutica." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/102448.

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Made available in DSpace on 2014-06-11T19:32:08Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-09-18Bitstream added on 2014-06-13T20:03:09Z : No. of bitstreams: 1 cora_la_dr_botib.pdf: 5114466 bytes, checksum: ae97ba77c87f4a9ec255be22db0f2b7f (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A administração oral de drogas é uma prática comum na terapia e as formas farmacêuticas sólidas são amplamente utilizadas. A variação no perfil de absorção ao longo do trato gastrintestinal (TGI) humano e a possibilidade de liberar drogas em diferentes regiões são os

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6

Mayes, Peter Richard. "A novel AC/DC bidirectional power converter." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239439.

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Corá, Luciana Aparecida. "A biosusceptometria AC aplicada à tecnologia farmacêutica /." Botucatu : [s.n.], 2008. http://hdl.handle.net/11449/102448.

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Orientador: José Ricardo de Arruda Miranda<br>Banca: Cristina Helena dos Reis Serra<br>Banca: Oswaldo Baffa Filho<br>Banca: Raul César Evangelista<br>Banca: Eryvaldo Sócrates Tabosa do Egyto<br>Resumo: A administração oral de drogas é uma prática comum na terapia e as formas farmacêuticas sólidas são amplamente utilizadas. A variação no perfil de absorção ao longo do trato gastrintestinal (TGI) humano e a possibilidade de liberar drogas em diferentes regiões são os maiores desafios para o desenvolvimento de novos produtos. Desse modo, avaliar formas farmacêuticas sólidas in vivo fornece um ent

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8

McClure, Morgan Taylor. "A Modular Architecture for DC-AC Conversion." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1340812711.

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9

Leite, Ary Pinheiro. "A Evolução urbana de Rio Branco (AC)." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/93794.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-Graduação em Geografia, Florianópolis, 2010<br>Made available in DSpace on 2012-10-25T03:28:38Z (GMT). No. of bitstreams: 1 287052.pdf: 26746591 bytes, checksum: 112c2ba3e59415c59269fa91594ffbc9 (MD5)<br>A porção territorial que hoje corresponde ao Município de Rio Branco, capital do estado do Acre, inicialmente sede do departamento do Alto Acre, foi formada como entreposto comercial da economia mercantil da borracha. Em 1882, este entreposto foi organizado e explorado por N

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10

Abrie, Dewald Johan. "Supervisory control and sliding mode control of a medium voltage direct AC-AC electronic voltage regulator." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80166.

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Thesis (MScEng)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: As control problems become more and more complex, techniques are required that surpass the capabilities of simple controllers that are linearized about certain parametric set points. Controllers that can operate over a large range of model parameter variations and even controllers that are largely model-independent are becoming more valuable and necessary. In this control application, voltage regulation is done on a direct AC-AC medium voltage regulator, making use of a type of regulated autotransformer configuration. Th

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Santos, Heron Alves dos. "Design of a controlled single-phase ac-dc converter for interconnection of DC and AC buses of a microgrid." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=12977.

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The recent growth expectation of the participation of solar-photovoltaic energy sources in the power generation matrix has significantly increased the number of grid-connected systems. For connection to power grid, it is essential to use a dc-ac converter, which is able to suit the characteristics of the power provided by the photovoltaic modules to grid parameters. This dissertation presents a project proposal of a 2 kW single phase dc-ac converter for connecting a 311 V dc bus to a 220 Vrms ac bus of a microgrid. The proposed converter is bidirectional and allows, when necessary, the power f

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DELBOSC, SERGE. "Etude de convertisseurs ac-dc a absorption sinusoidale." Cachan, Ecole normale supérieure, 1999. http://www.theses.fr/1999DENS0014.

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Ce travail porte sur l'etude et le developpement d'une structure originale de convertisseur isole ac-dc a absorption sinusoidale de courant. Apres un tour d'horizon sur les topologies employees et imaginables, nous developpons la structure retenue constituee de deux etages de puissances distinctes. Le convertisseur principal est un flyback qui assure l'isolation et dont le comportement est tres favorable au regime d'absorption sinusoidale. L'inductance couplee qui est le point faible de cette structure a ete etudiee. Plusieurs geometries ont ete concues dans l'objectif de reduire les pertes pa

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Martin, Derek D. "Dynamic models of a small ac induction motor." Thesis, University of Aberdeen, 1995. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU068919.

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The Power Electronics Group at Aberdeen University is working towards the provision of a complete time domain model of an electrical drive for marine applications. The model has been developed using the SABER electrical simulation software package and includes a cycloconvertor which supplies an ac induction motor which in turn drives the shaft/propeller assembly. Effects such as vibration, noise and shaft oscillations due to the cycloconvertor will be studied. This thesis reports on the development and investigation of a mathematical model of the ac induction motor which can be incorporated in

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14

Svátek, Jan. "Ekonomická analýza společnosti AC Sparta fotbal, a. s." Master's thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-10647.

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The goal of this diploma thesis is to analyze and evaluate situation of the corporation AC Sparta Praha fotbal, a.s. (AC Sparta Prague football). In the diploma thesis, there are applied generally used approaches and instruments for analysis of joint stock company. The situation of Sparta Prague is compared also with other clubs. I can see the biggest contribution of my work in a fact that till this time there is no analysis, which deals with czech football club in this comprehensive way.

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15

Yildirim, Dogan. "Field Oriented Control Of A Permanent Magnet Synchronous Motor Using Space Vector Modulated Direct Ac-ac Matrix Converter." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614302/index.pdf.

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The study designs and constructs a three-phase to three-phase direct AC&ndash<br>AC matrix converter based surface mounted permanent magnet synchronous motor (PMSM) drive system. First, the matrix converter topologies are analyzed and the state-space equations describing the system have been derived in terms of the input and output variables. After that, matrix converter commutation and modulation methods are investigated. A four-step commutation technique based on output current direction provides safe commutation between the matrix converter switches. Then, the matrix converter is simulated

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Fadel, Haind Mosbah Noraden MD. "Correlation Between AC/A Ratio and Ciliary Muscle Morphology in School-Age Children." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1322590123.

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Astad, Kristian Prestrud. "Feasibility investigation for the application of direct AC-AC conversion in offshore wind power based on a comparative evaluation." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10174.

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<p>In this thesis a feasibility study of a direct AC-AC converter for wind power application has been performed. Two three-phase voltages are converted to a single phase square wave for input to a high-frequency transformer and then rectified. No DC-capacitor is present in the converter and bi-directional switches consisting of two reverse blocking IGBTs allow the direct AC-AC conversion. Efficiency, silicon usage, price and output quality of the converter were to be compared with a reference case and conclusions to be drawn from the obtained results. The price comparison could not be finalize

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Daniele, Matteo. "A single-stage power factor corrected AC/DC converter." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0018/MQ39474.pdf.

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Chua, Sze Wey. "AC Quantized Hall resistance as a standard of impedance." Thesis, Brunel University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242987.

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Harvey, Matthew. "Low Energy Electron Scattering from a Pulsed AC-MOT." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503654.

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Andrade, Eliana Lobo de [UNESP]. "VT Preparado: AC/JC : a videoarte de Walter Silveira." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/127986.

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Made available in DSpace on 2015-10-06T13:02:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-07-14. Added 1 bitstream(s) on 2015-10-06T13:19:36Z : No. of bitstreams: 1 000849668.pdf: 1903609 bytes, checksum: 8231313fb4e85e981f996294e5732c1e (MD5)<br>A proposta deste trabalho se centra na pesquisa das influências da poesia concreta na videoarte, especialmente no video VT Preparado:AC/JC, de autoria de Walter Silveira e Pedro Vieira. Não se trata, aqui, do vídeo como emissão televisiva ou em suas características técnicas, mas como possibilidade de expressão utilizada pelo artista. Co

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Andrade, Eliana Lobo de 1950. "VT Preparado : AC/JC : a videoarte de Walter Silveira /." São Paulo, 2015. http://hdl.handle.net/11449/127986.

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Acompanha DVD com o video VT Preparado:AC/JC, de autoria de Walter Silveira e Pedro Vieira<br>Orientador: Omar Khouri<br>Banca: José Leonardo do Nascimento<br>Banca: Neiva Pitta Kadota<br>Resumo: A proposta deste trabalho se centra na pesquisa das influências da poesia concreta na videoarte, especialmente no video "VT Preparado:AC/JC", de autoria de Walter Silveira e Pedro Vieira. Não se trata, aqui, do vídeo como emissão televisiva ou em suas características técnicas, mas como possibilidade de expressão utilizada pelo artista. Como dois movimentos de vanguarda, a poesia concreta e a videoarte

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Wheeler, Patrick W. "A matrix converter for variable speed AC motor drives." Thesis, University of Bristol, 1993. http://hdl.handle.net/1983/1eec4275-808a-4125-813b-4f6e00881f44.

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Khoo, Wee K. "AC self-bearing motors with a bridge configured winding." Thesis, Aston University, 2002. http://publications.aston.ac.uk/11835/.

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Magnetic levitation bearings eliminate friction, wear and the need for lubrication and so have high speed capability and potential for vibration control. One noteworthy development in the realm of magnetic levitation is the self-bearing or bearingless motor - an electromagnetic machine that supports its own rotor by way of magnetic forces generated by windings on its stator. Accordingly, various winding schemes have been proposed to accomplish the task of force production. This thesis proposes a novel concept of winding based on a bridge connection for polyphase self-bearing rotating electrica

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Rossoni, Priscila. "Fluxo de carga AC linearizado associado a ferramenta MATLAB." reponame:Repositório Institucional da UFABC, 2016.

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Orientador: Prof. Dr. Edmarcio Antonio Belati<br>Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Engenharia Elétrica, 2016.<br>Esta dissertação apresenta um estudo para sistemas de distribuição e transmissão de energia elétrica com Fluxo de Carga AC Linearizado (FCACL). Este estudo é baseado no Fluxo de Carga AC (FCAC) em que é realizada uma linearização nas equações de balanço das potências ativas e reativas utilizadas na modelagem original do FCAC. Ao contrário dos algoritmos de FCAC, esta técnica não requer um processo iterativo, o que resulta em uma metod

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Zamora, Cura Carlos Alberto. "On languages in AC§0 that have a neutral letter." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29812.pdf.

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Feng, Wei. "A DSP based AC electronic load for unintentional islanding tests." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/11991.

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The distributed generation (DG) system for the renewable energy resources is being used more and more widely around the world in the past decades. In order to protect the whole power system from the islanding situation, the interface inverters of the DG system have to pass the unintentional islanding test. In this study, a single phase AC electronic load is introduced to simulate the local loads under unintentional islanding conditions. This thesis proposes a proper schematic of the electronic loads based on the H-bridge dc-dc converter and analyzes the performance of this system with PowerSI

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Yon, Jason M. "Variable frequency AC from a shunt regulated permanent magnet generator." Thesis, University of Bristol, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.682723.

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The aviation industry is in the process of developing the All-Electric-Aircraft through a succession of increasingly More-Electric-Aircraft. Through this evolution, previously pneumatically or hydraulically powered functions are being implemented by electrical systems. This requires an increase in electrical power generation and distribution. To meet this increasing demand at competitive power densities, a change of generator technology may soon be required. Permanent Magnet (PM) machines, due to their power density, efficiency and simple robust construction, are a strong candidate technology

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Rouabah, Hamza A. "Design and fabrication of a new 3D AC-electroosmotic micropump." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/79670/.

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Integrated Microsystems, MicroTAS or the Lab-on-a-chip, require integrated fluid handling. Advances in microelectronics fabrication processes have allowed the miniaturization of fluid handling devices such as micropumps. In biomedical technology, pumps for handling extremely small fluid amounts become more and more important where microsystems for biological analysis routinely use solid-state electrokinetic micropumps. AC Electrokinetic micropumps in particular AC electroosmosis pump can be used to pump fluids using planar electrodes which induce electrical forces on the fluid. However, planar

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Fatoyinbo, Henry O. "New AC electro-kinetic tools for laboratories-on-a-chip." Thesis, University of Surrey, 2006. http://epubs.surrey.ac.uk/844490/.

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AC electro-kinetics involves the manipulation of particles in non-uniform alternating electric fields. Micro-systems consisting of microelectrode arrays generate the field non-uniformities which can produce several observed phenomena, including lateral particle displacements (dielectrophoresis), particle rotation (electro-rotation) and induced fluid flow (electro-hydrodynamics). These effects are influenced primarily by the dielectric properties of the particle and the suspending medium, the frequency of the applied electric field and the electrode designs. In this thesis, novel processes invo

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Cass, Callaway James. "A SiC JFET-Based Three-Phase AC PWM Buck Rectifier." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/32316.

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Silicon carbide (SiC) power switching devices promise to be a major breakthrough for new generation ac three-phase power converters, offering increased junction temperature, low specific on-resistance, fast switching, and low switching loss. These characteristics are desirable for increasing power density, providing faster system dynamics, and improving power quality. At present, the normally-on SiC JFET prototypes available from SiCED are the first SiC power switches close to commercialization. The objective of this work is to characterize the switching behavior of the prototype SiC JFET devi

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Káňa, Vojtěch. "Automatizované měření charakteristik dvojbranů v DC, AC a časové oblasti." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316444.

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This master´s thesis describes about automated measurements of two – ports of frequency, time and DC area. Gradually, there is elaborated several theoretical foundations dealing with this issue. For example, different types of buses, available programs and general theory of two – ports circuits. Also a method for solving and implementing a measuring device for communication between apparatuses and DUT is designed and described. In conclusion, the results and evaluation of measurement are processed.

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Eissa, Mohamed O. (Mohamed Omer). "A fast analog controller for a unity power factor AC/DC converter." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/106709.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.<br>Includes bibliographical references (leaves 108-109).<br>by Mohamed O. Eissa.<br>M.S.

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Coombe, H. Scott. "Development of a dynamic model of a mechanically driven polyphase AC generator /." This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-03172010-020029/.

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Rebouças, Floripes Silva [UNESP]. "A extração e a indústria da madeira no município de Rio Branco - AC." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/89790.

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Made available in DSpace on 2014-06-11T19:24:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-01-24Bitstream added on 2014-06-13T18:51:50Z : No. of bitstreams: 1 reboucas_fs_me_prud.pdf: 676967 bytes, checksum: b6d40c480a29167bae5341dc4dde58b1 (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A atividade madeireira vem sendo desenvolvida no Brasil deste o início de sua colonização. Na Amazônia e especificamente no Acre, essa atividade só passa a ter uma importância econômica a parti

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Rebouças, Floripes Silva. "A extração e a indústria da madeira no município de Rio Branco - AC /." Presidente Prudente : [s.n.], 2007. http://hdl.handle.net/11449/89790.

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Resumo: A atividade madeireira vem sendo desenvolvida no Brasil deste o início de sua colonização. Na Amazônia e especificamente no Acre, essa atividade só passa a ter uma importância econômica a partir da década de 1960, já que anterior a esse período os recursos madeireiros eram utilizados apenas como subproduto de outras atividades econômicas. É com a implantação da pecuária que o estado do Acre passa a ter grande quantidade da floresta desmatada para a formação de pastos. A madeira retirada passa então a ser utilizada também como um recurso econômico e, a partir daí, deixa de ser um meio,

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Ismail, Nasser. "A single stage full bridge power factor corrected AC/DC converter." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq26004.pdf.

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Chen, Jyun-Ren, and 陳俊任. "A Novel Single-Phase Three-Switch AC/AC Converter." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/77sj33.

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碩士<br>國立虎尾科技大學<br>電機工程研究所<br>99<br>In this thesis, a novel single-phase three-switch AC/AC converter is proposed. The proposed converter consists of three power switches, three capacitors and two inductors. Based on the generalized zero vector (GZV) control strategy, the proposed converter has several advantages such as single stage control, input unity power factor, sinusoidal input/output current, energy regeneration, and low cost etc.. Besides, a fully digital control TMS320F2812 digital signal processor (DSP) and VisSim simulation program are adopted to implement the control circuit. Final

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Yang, Chen-Chih, and 楊鎮誌. "A Novel Three-phase AC/AC Converter Using Six Switches." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/drwr9z.

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碩士<br>國立虎尾科技大學<br>電機工程研究所<br>100<br>In this thesis, a novel three-phase AC/AC converter is proposed. The proposed converter consists of six power switches, three capacitors, three input inductors and three output inductors. The proposed converter has several advantages such as sinusoidal input-output current, adjustable frequency, unity input power factor and lower switch cost etc.. Based on the sinusoidal pulse width modulation techniques and zero vector control strategy, the converter combines three-phase AC/DC converter and three-phase DC/AC inverter to generate a single-stage converter con

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Wang, Jhih-jhe, and 王志哲. "Implementation of a Single-phase AC/AC Power Factor Correction Circuit." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/41290161502442923629.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>101<br>The thesis studies a single-phase, SEPIC based, ac/ac power factor corrector. The hardware is implemented by using bi-directional semiconductor switches to achieve ac/ac conversion. In addition, a digital signal processor, TMS320F2808, is used as a control center. By using the voltage and current feedback and the feed-forward control method, a fixed output ac voltage with high input power factor can be obtained. The basic principle and design method are discussed. A single-phase ac/ac power factor corrector circuit with 110V, 150W, 0.98 power factor has been i

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Chang, Shih-Yuan, and 張仕原. "Study and Realization of a Soft-Switching Single-Phase AC/AC Converter." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/50678993699955599309.

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碩士<br>國立宜蘭大學<br>電機工程學系碩士班<br>97<br>A single-phase soft-switched series-resonant ac chopper without auxiliary switches is presented. The presented single-phase ac chopper is configured by a series-resonant conversion without cycloconversion and auxiliary switches. The proposed single-phase ac chopper is a series resonator with four main switches to configure adaptively the resonant voltage robes. The output sinusoidal voltage is synthesized by a series of sinusoidal amplitude quasi-sinusoidal pulses (QSPs) following the input voltage amplitude. The presented single-phase ac chopper is operated

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Chang, Yu-wei, and 張育瑋. "Implementation of a Single-Phase AC/AC Converter With Adjustable Output Voltage." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/91265856663241860248.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>103<br>The thesis studies the implementation of an adjustable single-phase AC/AC converter. The hardware includes the buck-boost converter with bi-directional switches to achieve AC/AC conversion. The software is executed by using a digital signal processor, typed TMS320F2808. By measuring the feedback signals, the output voltage can keep as a constant under a variable input voltage and an external load disturbance condition. In addition, the output voltage can be adjusted according to the different input voltage commands. The thesis focuses on the basic principle an

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Chen, Guan-Ying, and 陳冠穎. "A Novel Single-stage Single-phase AC to Three-phase AC Converter." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/7dv95n.

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碩士<br>國立虎尾科技大學<br>電機工程研究所<br>100<br>This thesis proposes a novel single-stage single-phase AC to three-phase AC converter. Based on a zero vector technique, the proposed converter combines a single-phase full-bridge with three-phase full-bridge to form a single-stage circuit structure. The converter has unity power factor and sinusoidal input current in input side. Adjustable amplitude and frequency of three-phase current source are in output side. The proposed converter consists of eight power switches, one capacitor, one boost inductor and three output inductors. It’s worth mentioning that t

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Nyati, Sandeep. "Control of AC voltage of HVDC converter feeding into a weak AC system." 1988. http://hdl.handle.net/1993/16769.

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Li, Cheng-Chang, and 李承璋. "Study and Realization of a DSP-Based High-Performance AC/DC/AC Converter." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/19980591023974352170.

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碩士<br>國立宜蘭大學<br>電機工程學系碩士班<br>97<br>A digital signal processor (DSP) -based high performance AC/DC/AC converter is studied and realized in this thesis, whose main contribution is the replacement of the former analog controller by digital system, which is trying to implement the simplicity, less interference noise and great reduction of system scale of the control circuit. Besides, the proposed digital controller can achieve the technique of average-current mode control and sinusoidal pulse width modulation (SPWM), which can retain the merit of high power factor and low input current harmonic, o

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Liao, Di, and 廖荻. "Study and Implement of a Bi-Directional Bridgeless AC-Switch AC/DC Converter." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/f2n2zt.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>106<br>This thesis aims to study and design an output power 750 W, AC-side 230 V, DC-side 750 V bi-directional high efficiency and high power density for power converter of green energy system. For wider range of applications, this thesis implements synchronous rectification to achieve bi-directional power transference and the bridgeless topology for higher rectification-model efficiency, the inverter-model applied is a T-type inverter topology. On other the hand, the digital control used to replace analog control, the analog control is economical and simple but comp

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WEN, ZHAO-JUN, and 溫兆均. "A switched-mode AC power supply." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/20249946454863169677.

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Su, Hsin-Ping, and 蘇心平. "A Multi-carrier PWM for AC-DC-AC Converter Without DC Link Electrolytic Capacitor." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/70517992308602431561.

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碩士<br>中華大學<br>電機工程學系碩士班<br>102<br>Abstract This study proposes a multi-carrier pulse width modulation (PWM) for AC-DC-AC converter without DC link electrolytic capacitor. The AC-DC-AC converter consists of an AC-DC active front-end converter, a DC-AC voltage source inverter, and a 20uF ceramic capacitor in DC link. The DC bus voltage controller with load compensator is utilized to maintain the voltage of the DC link capacitor at designed value. Furthermore, the multi-carrier PWM is utilized to reduce the common-mode voltage (CMV) of AC-DC active front-end converter and DC-AC inverter. The simu

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Shie, Wei-Ren, and 謝偉仁. "A Novel Single-Phase AC/AC Converter with Energy Regeneration and Adjustable Power Factor." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/d5eb29.

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碩士<br>國立虎尾科技大學<br>電機工程研究所<br>97<br>In this thesis, a novel single-phase AC/AC converter is presented. The proposed converter, which consists of two full-bridge, two inductors and a capacitor, has several advantages such as adjustable power factor, sinusoidal input/output current, step up/down output voltage, adjustable frequency, single stage control, and energy regeneration etc.. Besides, the mathematical model of proposed converter is built using the state space averaging technique and generalized zero vector. In order to analyze dynamic characteristic of the circuit, the small signal model

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Chiu, Hsien-Te, and 邱賢德. "A Single-Phase to Three-Phase AC/AC Converter with Regeneration and Adjustable Power Factor." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/exwfck.

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碩士<br>國立虎尾科技大學<br>電機工程研究所<br>98<br>In this thesis, a single-phase to three-phase AC/AC converter is proposed. The proposed converter, which consists of a single-phase full-bridge and three-phase full-bridge, has four inductors and a capacitor. The proposed converter has several advantages such as adjustable power factor, sinusoidal input current, step up/down output voltage, adjustable frequency, single stage control, energy regeneration, and reduce the switching loss etc.. Besides, the mathematical model of proposed converter is built by using the state space averaging technique, generalized

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