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Dissertations / Theses on the topic 'Rectifiers'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Zhang, Hong. "Reversible rectifiers." Thesis, University of Surrey, 1992. http://epubs.surrey.ac.uk/843198/.

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In present-day variable speed a.c. drives the power system is usually of the D.C. link type. Here a diode bridge rectifier feeds a large capacitor to produce the D.C. link voltage, which in turn feeds an inverter and machine. In such a system, the input current waveform is severely distorted, degrading the power factor, and under regenerating operation of the machine the returned energy is usually dissipated in protection resistors. These drawbacks can be overcome by using active switches and PWM control in the front-end converter, which may then be called a REVERSIBLE RECTIFIER. With proper c

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2

Wu, Junyang. "Large current rectifiers." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611994.

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3

Suri, Ramaa Saket. "Design of Voltage Boosting Rectifiers for Wireless Power Transfer Systems." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1505212/.

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This thesis presents a multi-stage rectifier for wireless power transfer in biomedical implant systems. The rectifier is built using Schottky diodes. The design has been simulated in 0.5µm and 130nm CMOS processes. The challenges for a rectifier in a wireless power transfer systems are observed to be the efficiency, output voltage yield, operating frequency range and the minimum input voltage the rectifier can convert. The rectifier outperformed the contemporary works in the mentioned criteria.

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4

Hayatleh, Khaled. "High frequency current-mode precision rectifiers." Thesis, Oxford Brookes University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308928.

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5

Vilathgamuwa, Don Mahinda. "Control of voltage-sourced reversible rectifiers." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282931.

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6

Dahlquist, Fanny. "Junction Barrier Schottky Rectifiers in Silicon Carbide." Doctoral thesis, KTH, Microelectronics and Information Technology, IMIT, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3367.

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7

Dhoopati, Swathi. "Evaluation of dynamic and static electrical characteristics for the DY8 and YI8 process gallium diodes in comparison to the DI8 process boron diodes." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5614/.

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A rectifier is an electrical device, comprising one or more semiconductor devices arranged for converting alternating current to direct current by blocking the negative or positive portion of the waveform. The purpose of this study would be to evaluate dynamic and static electrical characteristics of rectifier chips fabricated with (a) DY8 process and (b) YI8 process and compare them with the existing DI8 process rectifiers. These new rectifiers were tested to compare their performance to meet or exceed requirements of lower forward voltages, leakage currents, reverse recovery time, and greate

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8

Deib, Deib Ali. "Programmed harmonic reduction in inverters and controlled rectifiers." Ohio : Ohio University, 1993. http://www.ohiolink.edu/etd/view.cgi?ohiou1173759592.

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9

Dixon, Juan W. (John Walterio). "Boost type PWM rectifiers for high power applications." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75864.

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The present industrial practice of ac to dc rectification uses diode or thyristor bridges which are harmonic polluters and poor power factor sources. The research of this thesis is directed towards exploiting fast, gate-turn-off semiconductor switching devices and PWM techniques in order to develop a new generation of rectifiers with nearly sinusoidal current waveforms operating at unity or even leading power factor. The scope of the investigation is restricted to the Boost rectifier (as opposed to Buck) which has bilateral power transfer capability through bidirectional current flow in the dc

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10

Wahby, Riad Samir 1981. "Radio frequency rectifiers for DC-DC power conversion." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/16690.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.<br>Includes bibliographical references (p. 75-78).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>A significant factor driving the development of power conversion technology is the need to increase performance while reducing size and improving efficiency. In addition, there is a desire to increase the level of integration of DC-DC converters in order to take advantage of the

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11

Nigam, Saurav. "Silicon carbide Schottky and P-i-N rectifiers." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000758.

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12

Berthou, Maxime. "Implementation of high voltage Silicon Carbide rectifiers and switches." Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00770661.

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In this document, we present ou study about the conception and realization of VMOS and Schottky and JBS Diodes on Silicon Carbide. This work allowed us optimize and fabricate diodes using Tungsten as Schottky barrier on both Schottky and JBS diodes of different blocking capability between 1.2kV and 9kV. Moreover, our study of the VMOS, by considering the overall fabrication process, has permitted to identify the totality of the problems we are facing. Thusly we could ameliorate the devices and try new designs as the VIEMOS or the monolithic integration of temperature and current sensors.

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13

Solanki, Jitendra [Verfasser]. "High power factor high-current variable-voltage rectifiers / Jitendra Solanki." Paderborn : Universitätsbibliothek, 2015. http://d-nb.info/1072683474/34.

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14

Humbel, Oliver. "Application-specific improvements on fast recovery 4.5kV press-pack rectifiers /." Konstanz : Hartung-Gorre, 2000. http://www.loc.gov/catdir/toc/fy0601/00465008.html.

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15

Qunais, Thaer. "Parametric Average-Value Model of Rectifiers in Brushless Excitation Systems." UKnowledge, 2013. http://uknowledge.uky.edu/ece_etds/37.

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An average-value model of a rotating rectifier circuit in a brushless excitation system is set forth, where a detailed simulation is required to extract the essential averaged-model parameters using numerical averaging. In the proposed approach, a synchronous machine model with saturation and cross saturation and an arbitrary rotor network representation that uses a voltage-behind-reactance representation for the field winding of the main machine is proposed. This allows the field winding to be represented as branches in a circuit solver, permitting straightforward simulation with connected ci

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16

Liebig, Sebastian. "Optimization of rectifiers for aviation regarding power density and reliability." Doctoral thesis, Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-159936.

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The intentions of the so-called "More Electrical Aircraft" (MEA) are higher efficiency and lower weight. A main topic here is the application of electrical instead of hydraulical, pneumatical and mechanical systems. The necessary power electronic devices have intermediate DC-links, which are typically supplied by a three-phase system with active B6 and passive B12 rectifiers. A possible alternative is the B6 diode bridge in combination with an active power filter (APF). Due to the parallel arrangement, the APF offers a higher power density and is able to compensate for harmonics from several d

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17

Liebig, Sebastian. "Optimization of rectifiers for aviation regarding power density and reliability." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2014. https://monarch.qucosa.de/id/qucosa%3A20187.

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The intentions of the so-called "More Electrical Aircraft" (MEA) are higher efficiency and lower weight. A main topic here is the application of electrical instead of hydraulical, pneumatical and mechanical systems. The necessary power electronic devices have intermediate DC-links, which are typically supplied by a three-phase system with active B6 and passive B12 rectifiers. A possible alternative is the B6 diode bridge in combination with an active power filter (APF). Due to the parallel arrangement, the APF offers a higher power density and is able to compensate for harmonics from several d

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18

Wang, Ce. "Study on Novel Rectifiers for Microwave Wireless Power Transfer System." Kyoto University, 2020. http://hdl.handle.net/2433/253503.

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19

Dalessandro, Luca. "Optimal modulation and wideband current sensing for three-level PWM rectifiers /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17529.

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20

Wang, Defu [Verfasser]. "Highly Efficient Microwave Rectifiers for RF Energy Recycling Technique / Defu Wang." München : Verlag Dr. Hut, 2019. http://d-nb.info/1178899160/34.

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21

謝雪飛 and Xuefei Xie. "A study of drive schemes for synchronous rectifiers in switching powersupplies." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31243812.

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22

Auton, Gregory. "High-mobility graphene nano-rectifiers and transistors for high frequency applications." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/highmobility-graphene-nanorectifiers-and-transistors-for-high-frequency-applications(1250a10d-e3c8-45f7-ba85-0d2e89f1bd04).html.

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Graphene has the highest mobility of any material at room temperature; this property has attracted a great deal of interest for applications in high frequency electronics, specifically transistors and diodes. To date, there has been little success using graphene for these purposes because it lacks the bandgap necessary to create an efficient device. This work aims to approach this problem from a different angle; using device architecture that potentially does not need a bandgap. This could allow graphene's excellent electrical properties to be exploited fully. The first example of this is the

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23

Ehlers, PJ, CG Richards, and DV Nicolae. "Using PSIM to investigate harmonic control for boost-type PWM rectifiers." Institute of Electrical and Electronics Engineers, 2008. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001150.

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Static power converters produce harmonics due to the nature of the conversion process. This paper will investigate two variations of current mode control for three-phase power converters ensuring reduced harmonic pollution and power factor improvement. The first method employed uses a Fryze current reference and the second method utilises a balanced three-phase sinusoidal reference. Both control techniques are simulated under unbalanced and distorted supply conditions using the PSIM simulation platform. The results are presented showing that using the Fryze current reference is the best choice

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24

Hirakawa, Takashi. "Novel Analyses on Single Shunt Rectifiers for Microwave Wireless Power Transmission." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263668.

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25

Brinsfield, Jason. "Modeling and Simulation of Parallel D-STATCOMs with Full-Wave Rectifiers." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1209.

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In recent years, both a significant increase in electrical demand and a large influx of intermittent renewable energy sources have put a considerable stress on the nation’s electrical grid. Conventional power flow control techniques such as capacitor banks and tap-changing transformers are incapable of adequately handling the rapid fluctuations in power supply and demand that today’s grid experiences. Flexible AC Transmission System (FACTS) controllers are a practical way to compensate for such rapid power fluctuations. One type of shunt FACTS controller is the Static Synchronous Compensator (

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26

Dixon, Juan W. (Juan Walterio). "A DC voltage regulated, controlled current PWM rectifier /." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65923.

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27

Grote, Tobias [Verfasser]. "Digital control for interleaved boost power factor correction (PFC) rectifiers / Tobias Grote." Paderborn : Universitätsbibliothek, 2014. http://d-nb.info/105184813X/34.

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28

Perera, Aravinda. "Virtual Synchronous Machine-based Power Control in Active Rectifiers for Micro Grids." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19202.

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This dissertation presents an analytical study on virtual synchronous machine-based power control in active rectifiers for micro grids supported by prototype modelling, simulation results and discussions.Popularity and demand of the distributed energy resources and renewable energy sources are increasing due to their economic and environmental friendliness. Concept of micro grid with an active rectifier (AR) interface has been found to be promising for smart integration of such distributed generation units. Having the presence of a synchronous generator (SG) in a micro grid introduces several

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29

Abbasian, Sadegh. "Radio frequency switch mode power amplifiers and synchronous rectifiers for wireless applications." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55218.

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This thesis focuses on identifying and evaluating device, circuit, and system level issues that affect the power efficiency of class-D and class-F switch-mode amplifiers, and class-F synchronous rectifiers. The amplifier and rectifier circuits are used to implement pulse encoded switch-mode power amplifier systems. A detailed power efficiency analysis of current mode class-D amplifiers is presented for variable duty cycle pulse trains. A device model with current saturation in the switch is introduced and gives insight into how to select an appropriate load line for variable duty cycle switchi

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30

Santiago-GonzáIez, Juan Antonio. "Design of class E resonant rectifiers for very high frequency power conversion." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/84862.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 113-116).<br>Resonant rectifiers have important applications in very-high-frequency power conversion systems, including dc-dc converters, wireless power transfer systems, and energy recovery circuits for radio-frequency systems. In many of these applications, it is desirable for the rectifier to appear as a resistor at its ac input port. However, for a given dc output voltage, the input impedance

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31

Nicolae, DV, PJ Ehlers, and CG Richards. "An investigation on optimal current mode control for boost-type PWM rectifiers." Tshwane University of Technology, 2008. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001163.

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Abstract-- Static power converters produce harmonics due to the nature of the conversion process. This paper will investigate the effect on the power factor of a sinusoidal and Fryze current reference on a PWM boost type rectifier. It has been shown in previous papers that a Fryze current ref is best. This paper will develop a mathematical model, based on the single sided Fourier expansion. Using this mathematical model it will be shown that even though a high harmonic content could be present in a Fryze controlled PWM boost type rectifier, the power factor has been optimally improved.

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32

Xie, Xuefei. "A study of drive schemes for synchronous rectifiers in switching power supplies /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25100749.

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33

Souto, Salom Manuel. "Multifunctional Materials based on TTFPTM dyads: towards new Molecular Switches, Conductors and Rectifiers." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/393986.

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Esta Tesis está centrada en el diseño, síntesis y caracterización de nuevos materiales moleculares multifuncionales basados en sistemas Dador-Aceptor (D-A) formados por la unidad dadora de electrones tetratiafulvaleno (TTF) enlazada a la unidad aceptora de electrones el radical policlorotrifenilmetilo (PTM) mediante diferentes puentes -conjugados. Estos compuestos pueden exhibir propiedades físicas muy interesantes como biestabilidad o propiedades ópticas no lineales en solución, conductividad en estado sólido o rectificación cuando son anclados en superficies. Por tanto, estos sistemas podrí

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34

Katulka, Gary L. "Fabrication and characterization of structures and rectifiers based on silicon carbide alloyed with germanium." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 206 p, 2007. http://proquest.umi.com/pqdweb?did=1481670091&sid=15&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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35

Gatarić, Slobodan. "Single-switch three-phase zero-current-transition rectifier with power factor correction /." This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-12162009-020342/.

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36

Limb, Jae Boum. "Design, fabrication and characterization of III-nitride PN junction devices." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-07022007-151130/.

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Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.<br>William Doolittle, Committee Member ; Joy Laskar, Committee Member ; Russell Dupuis, Committee Chair ; David Citrin, Committee Member ; Srinivas Garimella, Committee Member.

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37

Tsang, D. M. C. "Improvements in integrated high-quality rectifier-regulators." Thesis, Virginia Tech, 1993. http://hdl.handle.net/10919/41945.

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38

Jadric, Ivan. "Modeling and Control of a Synchronous Generator With Electronic Load." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36549.

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Design and analysis of a system consisting of a variable-speed synchronous generator that supplies an active dc load (inverter) through a three-phase diode rectifier requires adequate modeling in both time and frequency domain. In particular, the system's control-loops, responsible for stability and proper impedance matching between generator and load, are difficult to design without an accurate small-signal model. A particularity of the described system is strong non-ideal operation of the diode rectifier, a consequence of the large value of generator's synchronous impedance. This non-ideal b

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39

Ho, Kwun-yuan Godwin, and 賀觀元. "A novel integrated synchronous rectifier for LLC resonant converter." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49618180.

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There is ever-increasing demand in telecommunication system, data server and computer equipment for low voltage, high current power supply. LLC resonant converter is a good topology on primary side of the converter because it has soft switching and resonant conversion. However, the passive rectifier in the secondary side has high power dissipation. Synchronous rectifier is a popular method to reduce this rectification loss. Although there are many types of synchronous rectifier for PWM converter, most of them do not function well in LLC resonant converters. It is because the wave form of LLC

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40

Reigstad, Tor Inge. "Direct Driven Permanent Magnet Synchronous Generators with Diode Rectifiers for Use in Offshore Wind Turbines." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-8754.

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<p>This work is focused on direct-driven permanent magnets synchronous generators (PMSG) with diode rectifiers for use in offshore wind turbines. Reactive compensation of the generator, power losses and control of the generator are studied. Configurations for power transmission to onshore point of common connection are also considered. Costs, power losses, reliability and interface with the PMSG are discussed. The purpose of the laboratory tests and simulations are to learn how a PMSG with diode rectifier behaves. A 55kW PMSG is tested in "Vindlabben", with and without reactive compensation.

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41

Tella, Pranavi Chowdari Islam Naz E. "The study of single phase diode rectifiers with high power factor and low total harmonic distortion." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/5677.

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The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on October 6, 2009). Thesis advisor: Dr. Naz E. Islam. Includes bibliographical references.

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42

Lou, Lifang. "Design, characterization and compact modeling of novel silicon controlled rectifier (SCR)-based devices for electrostatic discharge (ESD) protection applications in integrated circuits." Orlando, Fla. : University of Central Florida, 2008. http://purl.fcla.edu/fcla/etd/CFE0002374.

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43

Ghosh, Rajesh. "Modeling, Analysis And Control Of Single-Phase And Three-Phase PWM Rectifiers." Thesis, 2007. https://etd.iisc.ac.in/handle/2005/529.

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Pulse width modulation (PWM) rectifiers are extensively used in battery charger, regulated dc voltage source, UPS systems, ac line conditioner and motor drives. The conventional control schemes for these rectifiers require PLL, transformations, and input voltage sensing, which increase the cost and complexity of the controller. Simple control schemes based on resistance emulation control are developed in this thesis work for different PWM boost rectifiers. Modeling, analysis and design methods for these rectifier systems are presented. The effect of computational delay involved in digital impl

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Ghosh, Rajesh. "Modeling, Analysis And Control Of Single-Phase And Three-Phase PWM Rectifiers." Thesis, 2007. http://hdl.handle.net/2005/529.

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Pulse width modulation (PWM) rectifiers are extensively used in battery charger, regulated dc voltage source, UPS systems, ac line conditioner and motor drives. The conventional control schemes for these rectifiers require PLL, transformations, and input voltage sensing, which increase the cost and complexity of the controller. Simple control schemes based on resistance emulation control are developed in this thesis work for different PWM boost rectifiers. Modeling, analysis and design methods for these rectifier systems are presented. The effect of computational delay involved in digital impl

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45

Kang, Young-Goo. "Analysis and design of optimum three-phase PWM rectifiers and rectifier-inventer frequency changers." Thesis, 1985. http://spectrum.library.concordia.ca/5723/1/NL21847.pdf.

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46

Chen, Po-Yuan, and 陳柏元. "Performance improvement for switched mode rectifiers." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/05291539170972500494.

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碩士<br>義守大學<br>電機工程學系<br>90<br>A high-switching-frequency-based switched mode rectifier (SMR) for UPS is proposed in this paper to reduce the size and the weight of the isolation transformer. An active power factor correction (PFC) circuit for the proposed SMR is applied to improve the input displacement power factor (DPF) and reduce the higher harmonics of the input current. By using an active RCD snubber and a coupled inductor, the efficiency of the SMR will be furthermore improved, and thus the size and the weight of this SMR will be reduced. For the proposed SMR with 180W output power, the

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47

Lin, Jia-Yi, and 林佳儀. "PFC Rectifiers Based Bridgeless Boost Converter." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/69808943006936706932.

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碩士<br>國立交通大學<br>機械工程系所<br>101<br>This paper presents the AC to DC Power Factor Correction converter with boost topology, using average current mode in fixed 200kHz switching frequency, and using microcontroller TMS320F28035 to control the PWM duty ratio in continuous conduction mode to re-shape the input current waveform and in phase with the input voltage. Typically, the PFC stage is a bridge rectifier followed by a boost circuit. However, the current distortion and power losses in the diode bridge cannot be ignored, so the conventional PFC topology is replaced by bridgeless PFC topology. Thi

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48

Wang, Chung-Bin, and 王炯賓. "Simulation and Process Optimization of Power Rectifiers." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/80951177677440460002.

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碩士<br>國立交通大學<br>電子工程系<br>87<br>Abstract In this thesis, fast recovery rectifiers and Schottky barrier rectifiers are investigated. Fast recovery rectifiers are used in switching mode power supplies (SMPS), and motor control circuits, etc. Besides, Schottky barrier rectifiers are commonly used as low voltage, high frequency rectifiers and diodes in PC motherboard. A unique and distinguishing feature of power devices is their high voltage blocking capacity. In application, however, cylindrical and spherical junction breakdowns constrain the breakdown voltage and cause it

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49

Lin, Ming-shih, and 林明昰. "Research on the Malfunction of Synchronous Rectifiers." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/40436972178599859386.

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碩士<br>義守大學<br>電機工程學系碩士班<br>98<br>In DC/DC converters with low output voltage and high output current, the technique of synchronous rectification (SR) is widely used for improving the output efficiency. However, for the SR buck converters, an abnormal phenomenon called “self turn-on” will probably occur in the low side switch under some circuit conditions. The self turn-on is a malfunction of this switch, basically caused by the resonance of the parasitic inductance and the parasitic capacitance in the converters, resulting in noticeable power dissipation. Therefore, this research especially fo

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50

Lin, Chih-Heng, and 林志恆. "A study on Harmonic Suppression for Rectifiers." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ay5xb2.

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碩士<br>國立聯合大學<br>電機工程學系碩士班<br>106<br>This thesis aims to investigate the harmonic suppression of rectifiers. In addition to introducing the basic concepts of harmonics, the influence and regulation standards of harmonics, and the basic principles of the current detection for active compensators, this thesis analyzes various rectifier architectures by simulations and laboratory experiments to figure out the current total harmonic distortion (THD) with and without an active compensator. In the simulation environment, 5 different types of rectifiers are analyzed: (1) three-phase IGBT recti

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