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Dissertations / Theses on the topic 'PWM Inverter'

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Published: 4 June 2021

Last updated: 26 July 2025

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1

Krogemann, Markus. "The parallel resonant DC link inverter : a soft-switching inverter topology with PWM capability." Thesis, University of Nottingham, 1997. http://eprints.nottingham.ac.uk/13526/.

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Soft-switching inverters have over the last decade received a lot of attention by researchers owing to the reduction or virtual elimination of switching losses that these circuits can achieve. Possible improvements in EMC performance due to the reduced levels of dv/dt have among other advantages triggered the development of a still growing number of zero-voltage or zero-current switching inverter circuits. More recently, the trend seems to have shifted from continuously resonant systems over to quasi-resonant topologies due to advantages in terms of device stresses and PWM compatibility. In th

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2

勞偉籌 and Wai-chau Lo. "A PWM inverter drive and control for electric vehicles." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1986. http://hub.hku.hk/bib/B31207376.

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Lo, Wai-chau. "A PWM inverter drive and control for electric vehicles /." [Hong Kong : University of Hong Kong], 1986. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1232243X.

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4

McCarty, Michael James. "Determining the Optimum Operating Parameters of a Unipolar PWM Inverter." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/287.

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This study presents a determination of the optimum operating parameters of a unipolar PWM inverter through theoretical and experimental analysis. The inverter is investigated in its simplest form without input DC-DC conversion or output filtering. The intent of this study is to understand the core of the inverter thoroughly before adding peripheral elements such as output filtering. Variations on the input voltage level and switching frequency were investigated to determine their impacts on the operation of the inverter and harmonics produced. Theoretical modeling and calculations conf

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5

Venugopal, S. "Study On Overmodulation Methods For PWM Inverter Fed AC Drives." Thesis, Indian Institute of Science, 2006. https://etd.iisc.ac.in/handle/2005/278.

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A voltage source inverter is commonly used to supply a variable frequency variable voltage to a three phase induction motor in a variable speed application. A suitable pulse width modulation (PWM) technique is employed to obtain the required output voltage in the line side of the inverter. Real-time methods for PWM generation can be broadly classified into triangle comparison based PWM (TCPWM) and space vector based PWM (SVPWM). In TCPWM methods such as sine-triangle PWM, three phase reference modulating signals are compared against a common triangular carrier to generate the PWM signals fo

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Venugopal, S. "Study On Overmodulation Methods For PWM Inverter Fed AC Drives." Thesis, Indian Institute of Science, 2006. http://hdl.handle.net/2005/278.

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A voltage source inverter is commonly used to supply a variable frequency variable voltage to a three phase induction motor in a variable speed application. A suitable pulse width modulation (PWM) technique is employed to obtain the required output voltage in the line side of the inverter. Real-time methods for PWM generation can be broadly classified into triangle comparison based PWM (TCPWM) and space vector based PWM (SVPWM). In TCPWM methods such as sine-triangle PWM, three phase reference modulating signals are compared against a common triangular carrier to generate the PWM signals for

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7

Bisulli, Lorenzo. "Progetto e analisi di tecniche di modulazione pwm per inverter trifase." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21387/.

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Lo scopo della tesi era quello di analizzare vari parametri delle principali modulazioni PWM per inverter trifase in modo da distinguere quali fossero le più efficienti o le più affidabili. A tale scopo, è stata dapprima effettuata una panoramica dell’inverter trifase e delle relative modulazioni. Sono stati quindi scritti vari codici in Matlab per simulare le diverse tecniche di modulazione. Le modulazioni presentate in questo testo (con i rispettivi codici) sono: Sinusoidal PWM, THIPWM, SVPWM, DSVPWM (0,1,2,3,+,-), ASDSVPWM, Six-step (implementata solo per effettuare un confronto). Al term

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8

Yatim, Abdul Halim bin Mohamed. "A microprocessor controlled three-phase insulated gate transistor PWM inverter drive." Thesis, University of Bradford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292639.

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9

Patkar, Fazlli. "PWM techniques for control of dual-inverter supplied six-phase drives." Thesis, Liverpool John Moores University, 2013. http://researchonline.ljmu.ac.uk/4463/.

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Among the different multiphase ac drive solutions, one of the most widely reported in the literature is the six-phase machine. The machines can be realised into two different configurations, symmetrical and asymmetrical. For the symmetrical configuration, the stator winding consists of two sets of three-phase windings that are spatially shifted by 60 degrees where spatial displacement between any two consecutive phases is the same and equal to 60 degrees. For the asymmetrical configuration, the two sets of three-phase windings are spatially shifted by 30 degrees. As a result, the spatial shift

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10

Ad'doweesh, K. E. "A microprocessor based PWM inverter drive incorporating a three-phase induction motor." Thesis, University of Bradford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371459.

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11

Engku, Ariff E. A. R. B. "Space vector Pwm techniques for six-phase three-level inverter-fed drives." Thesis, Liverpool John Moores University, 2018. http://researchonline.ljmu.ac.uk/7982/.

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In recent years, research in the area of multiphase drives has increased significantly. Having higher number of machine phases allows the current to be shared between the phases, thus reducing the current rating of power semiconductors used in the power converter. Additionally, if a multilevel inverter is used to drive the machine, the output voltage waveforms are going to be approximated closer toward sinusoidal waveforms, thus resulting in lower total harmonic distortion. Therefore, the combination of multiphase and multilevel technologies gives considerable benefits compared to conventional

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12

Hussien, Zahrul Faizi. "Current control of three-phase PWM Inverter for flywheel energy storage system." Thesis, University of Southampton, 2000. https://eprints.soton.ac.uk/47946/.

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The thesis is concerned with the use of flywheel energy storage system (FESS) in utility load levelling application. The work presented consists of two parts, first, an evaluation of utility load levelling schemes with FESS as the energy storage medium, and second, the development of power electronic interface of FESS to the utility. The thesis presents a study to evaluate FESS load levelling schemes in a UK electricity supply and distribution company. It identifies and quantifies the costs and benefits of the schemes, and carries out a financial appraisal based on Net Present Value (NPV) and

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13

Issa, Rihman H. "An investigation of efficient control strategies for a PWM inverter driven induction motor." Thesis, Loughborough University, 1987. https://dspace.lboro.ac.uk/2134/11783.

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Recent developments in power electronics switching devices have led to significant improvements in AC drives which, coupled with the obvious advantages of squirrel-cage induction motors, have generated a customerled demand for an increase in AC drive performance. This thesis describes the design and construction of a 3-phase pulsewidth modulated inverter using gate turn-off (GTO) thyristor switching devices, which drives a 0.75 kW 3-phase squirrel-cage induction motor. The inverter control circuit comprises a purpose-built large-scale integrated circuit, which generates the 3-phase pwm drive s

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14

Kamberis, Adam. "Adaptive control in the Walsh domain of a PWM inverter fed A.C. motor." Thesis, Manchester Metropolitan University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316179.

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15

Ibrahim, Zulkifilie. "Fuzzy logic control of PWM inverter-fed sinusoidal permanent magnet synchronous motor drives." Thesis, Liverpool John Moores University, 2000. http://researchonline.ljmu.ac.uk/5058/.

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16

Femia, Antonio. "Tecnica di modulazione PWM per inverter multifase con minima distorsione della corrente in uscita." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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L’obbiettivo della tesi è lo studio di una tecnica di modulazione che riduca la distorsione (ripple) della corrente in uscita da un inverter multifase. A tal fine, è stata determinata la tecnica di modulazione ottima, che rende teoricamente minimo il valore efficace del ripple di corrente. La tecnica proposta agisce sulla componente di modo comune delle tensioni dell’ inverter, per la quale viene determinata un’espressione esplicita in forma chiusa. Simulazioni e prove sperimentali confermano le previsioni teoriche.

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17

Yang, Jian. "Prediction of the power losses of PWM inverter drives for permanent magnet synchronous motors." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06112009-063124/.

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18

Bourgeade, Adrien. "PWM control optimization of a two-level inverter : Application to electric and hybrid vehicles." Electronic Thesis or Diss., Ecole centrale de Nantes, 2022. http://www.theses.fr/2022ECDN0045.

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Malgré les améliorations de topologies des convertisseurs DC/AC, l'onduleur à deux niveaux reste le "gold standard" dans l'industrie ceci pour de multiples raisons : simplicité, fiabilité, etc. Dans le cadre de cette thèse entre Centrale Nantes et Renault, de nouvelles commandes d'onduleur ont été développées afin d'améliorer les performances sans modifier la topologie du convertisseur. Pour cela, deux approches basées sur des commandes hors-ligne synchrones ont été proposées. Premièrement, celles qui relaxent la contrainte de symétrie angulaire entre phases, usuellement imposée au convertisse

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19

Nipoti, Simone. "Studio e realizzazione di un inverter trifase a tre livelli." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6817/.

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Lo scopo di questa tesi è lo studio e la realizzazione di una specifica tipologia di inverter, l’inverter trifase a tre livelli di tipo Cascaded. Il primo capitolo descrive l’inverter a due livelli e quello multilivello, evidenziandone gli aspetti peculiari e le possibili applicazioni. Il secondo capitolo affronta nello specifico l’inverter a trifase a tre livelli, per il quale, nel terzo capitolo, ne è descritta una realizzazione pratica, costruita presso i laboratori del Dipartimento di Ingegneria Elettrica dell’Università di Bologna. Nel quarto capitolo vengono presentate alcune prove speri

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20

Repčík, Juraj. "Využití obvodů FPGA ve víceúrovňových měničích." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-317131.

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Tento projekt zkoumá vybrané způsoby implementace víceúrovňových měničů do praxe. V předložené práci je do hloubky prezentována tzv. ANPC (Active Neutral Point Clamped) pětiúrovňová topologie. Autor se v práci zaměřuje zejména na návrh technického řešení experimentálního vzorku a implementaci řídicích algoritmů jako jsou aktivní řízení napětí na pomocném kondenzátoru nebo aktivní balancování vstupního kapacitního děliče. Pro aplikaci zmíněných struktur byl vybrán moderní digitální integrovaný obvod, který slučuje mikroprocesor a FPGA do jednoho systému. Výsledný měnič umožňuje autonomní provoz

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21

Afiat, Milani Alireza. "Voltage regulation in a single-stage three-phase boost-inverter using modified phasor pulse width modulation method for stand-alone applications." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/16219.

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Master of Science<br>Department of Electrical and Computer Engineering<br>Behrooz Mirafzal<br>In this thesis, a modified version of the phasor pulse width modulation (PPWM) switching method for use in a single-stage three-phase boost inverter is presented. Because of the required narrow pulses in the PPWM method and limitations in controller resolution, e.g. dSPACE, the desired switching pattern for a boost inverter requires a costly processor. A low resolution processor can cause pulse dropping which results in some asymmetric conditions in output waveforms of the boost inverter and therefore

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22

Un, Emre. "Common Mode Voltage And Current Reduction In Voltage Source Inverter Driven Three Phase Ac Motors." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609062/index.pdf.

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In this thesis various reduced common mode voltage (RCMV) pulse width modulation (PWM) techniques and active/passive common mode voltage (CMV) reduction methods for voltage source inverter driven three-phase AC motors are theoretically and practically investigated. A novel RCMV-PWM method, the near state PWM (NSPWM) method is proposed for operation at high modulation index. At low modulation index, a modified version of an existing RCMV-PWM method, AZSPWM1, termed as MAZSPWM, is proposed to mitigate the voltage reflection problem of the method. An optimum modulation algorithm combining NSPWM a

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23

Sun, Pengwei. "Cascade Dual-Buck Inverters for Renewable Energy and Distributed Generation." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/26637.

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Renewable energy and distributed generation are getting more and more popular, including photovoltaic modules (PV), wind turbines, and fuel cells. The renewable energy sources need the power electronics interface to the utility grid because of different characteristics between the sources and the grid. No matter what renewable energy source is utilized, inverters are essential in the microgrid system. Thanks to flexible modular design, transformerless connection, extended voltage and power output, less maintenance and higher fault tolerance, the cascade inverters are good candidates for utilit

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24

Štěpnička, Martin. "Střídavý zdroj se vzdáleným řízením." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242121.

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The project describes the design of controlled inverters or power generator simulating one phase of European or American distribution network. The generator is able to enter into an output signal of a certain fault conditions designed to testing the electromagnetic compatibility of connected devices. The text is divided into three main chapters. The first one deals with the design of the power generating low-frequency signal. The second part describes the power source used for this generator. In the third section describes the program management unit. End of text summarizes the results. The an

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Tuhý, Luboš. "Výukový modul pro měření v předmětu Výkonová elektronika 1." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220550.

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This thesis describes the design and implementation of the transistor inverter to the subject of power electronics first outcome of this thesis will transistorized inverter that will serve as a demonstration tool in laboratory practice course electrical power. The laboratory preparation, students will be able to virtually test your theory acquired knowledge of the issue. Part of the theoretical analysis will be proposed circuit simulation program through classes Spice.

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26

Narayanan, G. "Synchronised Pulsewidth Modulation Strategies Based On Space Vector Approach For Induction Motor Drives." Thesis, Indian Institute of Science, 1999. https://etd.iisc.ac.in/handle/2005/139.

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In high power induction motor drives, the switching frequency of the inverter is quite low due to the high losses in the power devices. Real-time PWM strategies, which result in reduced harmonic distortion under low switching frequencies and have maximum possible DC bus utilisation, are developed for such drives in the present work. The space vector approach is taken up for the generation of synchronised PWM waveforms with 3-Phase Symmetry, Half Wave Symmetry and Quarter Wave Symmetry, required for high-power drives. Rules for synchronisation and the waveform symmetries are brought out. Th

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Narayanan, G. "Synchronised Pulsewidth Modulation Strategies Based On Space Vector Approach For Induction Motor Drives." Thesis, Indian Institute of Science, 1999. http://hdl.handle.net/2005/139.

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In high power induction motor drives, the switching frequency of the inverter is quite low due to the high losses in the power devices. Real-time PWM strategies, which result in reduced harmonic distortion under low switching frequencies and have maximum possible DC bus utilisation, are developed for such drives in the present work. The space vector approach is taken up for the generation of synchronised PWM waveforms with 3-Phase Symmetry, Half Wave Symmetry and Quarter Wave Symmetry, required for high-power drives. Rules for synchronisation and the waveform symmetries are brought out. Thes

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Krohn, Austin Bengoechea. "Electro-Thermal Dynamics and the Effects of Generalized Discontinuous Pulse Width Modulation Algorithms on High Performance Variable Frequency Drives." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397643253.

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29

Talarico, Andrea. "Analisi di un inverter implementato mendiante tecnologie ad ampio bandgap." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25393/.

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Studio e simulazioni un inverter con diverse topologie e modulazioni PWM, impiegando 3 diverse tecnologie: MOSFET al Silicio, transistore al Nitruro di Gallio e MOSFET al Carburo di Silicio. Le topologie prese in esame sono: Full-Bridge e HERIC. Le modulazioni PWM prese in esame sono: bipolare, unipolare, semi-onda, ibrida.

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30

Pou, Félix Josep. "Modulation and control of three-phase PWM multilevel converters." Doctoral thesis, Universitat Politècnica de Catalunya, 2002. http://hdl.handle.net/10803/6327.

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La present tesi doctoral estudia els inversors trifàsics multinivell del tipus denominat de díodes de fixació (diode-clamped converters). Aquests convertidors poden generar tres o més nivells de tensió a cada fase de sortida, i normalment s'apliquen a sistemes de gran potència ja que poden treballar amb tensions majors que els inversors clàssics. L'anàlisi es centra fonamentalment en la topologia de tres nivells, tot i que també es realitzen contribucions per a convertidors de més nivells. Els principals objectius són la proposta de nous algorismes de modulació vectorial PWM de processat ràpid

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31

Al-Egli, Fares, and Moumin Hassan Mohamed. "Control, Design, and Implementation of Quasi Z-source Cascaded H-Bridge Inverter." Thesis, Linköpings universitet, Elektroniska Kretsar och System, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-152711.

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This report is about control, design and implementation of a low voltage-fed quasi Z-source three-level inverter. The topology has been interesting for photovoltaic-systems due to its ability to boost the incoming voltage without needing an extra switching control. The topology was first simulated in Simulink and later implemented on a full-bridge module to measure the harmonic distortion and estimating the power losses of the inverter. An appropriate control scheme was used to set up a shootthrough and design a three-level inverter. The conclusion for the report is that the quasi Z-source inv

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MIGLIAZZA, Giovanni. "Studio di nuove soluzioni di Inverter a corrente impressa per sorgenti energetiche rinnovabili e per azionamenti elettrici in ambito aerospaziale." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2020. http://hdl.handle.net/11380/1200383.

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In questo lavoro di tesi è stata analizzata una particolare architettura di convertitore elettronico di potenza DC/AC denominata CSI (“Current Source inverter”). Storicamente, questa topologia è stata largamente impiegata per l’azionamento di macchine elettriche in media tensione. Il CSI, rispetto ai più diffusi Voltage Source Inverter (VSI) è caratterizzato da maggiori perdite di conduzione dei propri transistor ma è in grado di garantire un’affidabilità più elevata, siccome il corto-circuito di un qualunque mezzo-ponte (gamba dell’inverter) non determina una rottura (come nelle comuni archit

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Zavaglia, Gianluca. "Inverters multilivello per il pilotaggio di motori asincroni trifase." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/9747/.

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In questo lavoro di laurea si presentano le varie famiglie di convertitori multilivello MMC (Modular Multilevel Converter). Questi convertitori sono di ausilio per il condizionamento dei parametri di reti elettriche in media e alta tensione e possono anche essere convenientemente utilizzati nel pilotaggio di motori asincroni trifase. Dopo aver esplicitato i principi di funzionamento, presentato i dispositivi di commutazione, le tipologie conosciute e le rispettive principali tecniche di modulazione, si è presentato il motore asincrono trifase, il suo circuito equivalente e le problematiche di

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Billard, Thibaut. "Off-line and on-line partial discharges detection in low voltage motors of electric vehicle fed by a PWM inverter using non-intrusive sensor." Toulouse 3, 2014. http://thesesups.ups-tlse.fr/2555/.

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Pour faire varier la vitesse d'un moteur d'une voiture électrique, un onduleur de tension avec une modulation de largeur d'impulsion (MLI) est utilisé. Les temps de commutation de plus en plus courts créent un grand nombre de fronts de tension. L'utilisation d'un onduleur sur une machine basse tension est de plus en plus répandue et peut provoquer une réduction de la durée de vie des machines. Tout d'abord, la répartition de la tension au sein de la bobine est fortement inhomogène à cause de la nature impulsionnelle de la tension. Dans des machines basse tension avec un bobinage en vrac, il y

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Ustuntepe, Bulent. "A Novel Two-parameter Modulation And Neutral Point Potential Control Method For The Three-level Neutral Point Clamped Inverter." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606928/index.pdf.

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In this thesis, the neutral point potential drift/fluctuation of the three-level neutral point clamped inverter is analyzed and a novel control algorithm, the two-parameter PWM method is proposed to confine the neutral point potential variation to a very small range. The two-parameter PWM method provides superior neutral point potential control performance even with small DC bus capacitors. The method is based on PWM pulse pattern modification and requires no additional hardware. Detailed analytical models of the neutral point current and potential as a function of the modulation parameters ar

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Ayhan, Ufuk. "Investigation Of Dc Bus Current Harmonics In Two And Three Level Three-phase Inverters." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614182/index.pdf.

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Within scope of this work, double-fourier analysis method of rapid calculation and detailed simulation method, which are used to investigate DC bus current harmonics in two level and three level three-phase inverters systematically, will be emphasized and two methods will be compared via applying different modulation techniques. In addition, DC bus currents will be investigated visually for various working conditions and modulation methods. After that, analysis methods will be applied and harmonic spectrums will be determined. After all, it will be showed that calculated harmonic spectrums cou

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Cetin, Nebi Onur. "Design And Implementation Of Advanced Pulse Width Modulation Techniques And Passive Filters For Voltage Source Inverter Driven Three-phase Ac Motors." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612236/index.pdf.

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Advanced pulse width modulation (PWM) techniques such as space vector PWM, active zero state PWM, discontinuous PWM, and near state PWM methods are used in three-phase AC motor drives for the purpose of obtaining low PWM current ripple, wide voltage linearity range, and reduced common mode voltage (CMV). In some applications, a filter is inserted between the inverter and the motor for the purpose of reducing the stresses in the motor. The motor current PWM ripple components, terminal voltage overshoots, shaft voltage, and bearing currents, etc. can all be reduced by means of PWM techniques and

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Muñoz, Ramirez Oscar Mauricio. "Contributions on spectral control for the asymmetrical full bridge multilevel inverter." Doctoral thesis, Universitat Rovira i Virgili, 2010. http://hdl.handle.net/10803/8476.

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Las topologías de circuitos inversores multinivel pueden trabajar a tensiones y potencias mayores que las alcanzadas por convertidores convencionales de dos niveles. Además, la conversión multinivel reduce la distorsión armónica de las variables de salida y en algunos casos, a pesar del aumento de elementos de conmutación, también reduce las pérdidas de conversión al incrementarse el número de niveles. La reducción de distorsión alcanzada por el número de niveles puede aprovecharse para reducir las pérdidas de conmutación disminuyendo la frecuencia de las señales portadoras. Para reducir aún m

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Yu, Huijie. "Driver Based Soft Switch for Pulse-Width-Modulated Power Converters." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/26399.

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The work in this dissertation presents the first attempt in the literature to propose the concept of â soft switchâ . The goal of â soft switchâ is to develop a standard PWM switch cell with built-in adaptive soft switching capabilities. Just like a regular switch, only one PWM signal is needed to drive the soft switch under soft switching condition. The core technique in soft switch development is a built-in adaptive soft switching circuit with minimized circulation energy. The necessity of minimizing circulation energy is first analyzed. The design and implementation of a universal con

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Buyukkeles, Umit. "Improved Torque And Speed Control Performance In A Vector-controlled Pwm-vsi Fed Surface-mounted Pmsm Drive With Conventional P-i Controllers." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614294/index.pdf.

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In this thesis, high performance torque and speed control for a surface-mounted permanent magnet synchronous machine (PMSM) is designed, simulated and implemented. A three-phase two-level pulse width modulation voltage-source inverter (PWM-VSI) with power MOSFETs is used to feed the PMSM. The study has three objectives. The first is to compensate the voltage disturbance caused by nonideal characteristics of the voltage-source inverter (VSI). The second is to decouple the coupled variables in the synchronous reference frame model of the PMSM. The last is to design a load torque estimator in ord

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Oliveira, Yuri Calil Loures de. "Alimentação de cargas hospitalares críticas utilizando conversores estáticos." Universidade Federal de Juiz de Fora, 2016. https://repositorio.ufjf.br/jspui/handle/ufjf/1398.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-05-05T18:23:07Z No. of bitstreams: 1 yuricalillouresdeoliveira.pdf: 2613361 bytes, checksum: b14d216c9e91ffe085e35724d58bc704 (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-06-07T15:42:11Z (GMT) No. of bitstreams: 1 yuricalillouresdeoliveira.pdf: 2613361 bytes, checksum: b14d216c9e91ffe085e35724d58bc704 (MD5)<br>Made available in DSpace on 2016-06-07T15:42:11Z (GMT). No. of bitstreams: 1 yuricalillouresdeoliveira.pdf: 2613361 bytes, checksum: b14d216c9e91ffe085e35724d58bc704 (MD5)

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Wang, Bo-Han, and 王柏翰. "Harmonic Elimination for PWM Inverter." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/93211412376861913471.

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碩士<br>國立交通大學<br>機械工程系所<br>102<br>In this thesis, we discuss about a single-phase DC-AC pulse-width modulated (PWM) inverter system. Actually, the harmonics in the PWM inverter output voltage are often generated as a result of voltage source disturbances. The high-frequency harmonics will filter out by the system itself; nevertheless, the low-frequency harmonics induced by the fundamental component can cause the output ac current to be distorted. A Doubly Coprime Factorization Disturbance Observer (DCFDOB) structure is applied to the DC-AC inverter. This structure can reduce the influence b

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Wang, Chi-Nam, and 王旗男. "Multilevel PWM Inverter Control Induction Motor." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/28752679261546760678.

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碩士<br>國立雲林科技大學<br>電機工程系碩士班<br>89<br>This paper presents a five-level diode clamp inverter control for induction motor by using simple V/F control law. Multilevel voltage source inverter is based on the extension of two-level inverter. By using the multilevel pulse width modulation scheme, we can obtain better output voltage and current waveform with less harmonics. The advantage of multilevel inverter is using low rated power MOSFET to implement high voltage or high power applications. To implement the adopted multilevel scheme for induction motor , the computer simulations and hardware tests

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陳宏亮. "Space vector PWM inverter for induction motor." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/80902045781543702812.

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Behera, Suryakant. "FPGA based PWM techniques for controlling Inverter." Thesis, 2010. http://ethesis.nitrkl.ac.in/1985/1/FPGA_based_PWM_techniques_for_controlling_Inverter.pdf.

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Pulse Width Modulation has nowadays become an integral part of every electronics system. These techniques have been widely accepted and are researched extensively nowadays. It has found its application in large number of applications as a voltage controller. Its use in controlling output voltage of Inverter is the most frequently used application. There are basically two main techniques of PWM Generation- Analog technique and Digital Technique. This thesis deals with these two techniques. First Analog techniques were studied in detail but these techniques have some demerits. Due to these deme

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Al-Ghubari, Fahad H. "Voltage analysis of PWM inverter fed induction motors." Thesis, 1999. http://hdl.handle.net/1957/33092.

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Adjustable Speed Drive (ASD) systems are widely used in industry to effectively improve process efficiency and control. Typically, an ASD system consists of a motor with its speed controlled by a power electronics converter via varying the amplitude and frequency of the input voltage. However, several abnormal insulation failures of random wound motors in ASD applications have been reported. These failures were related to voltage transients caused by inverters employing fast insulated Gate Bipolar Transistors (IGBTs) combined with long cables that connect motors to inverters. This thesis furth

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ZOU, YING-YU, and 鄒應嶼. "A research on digital PWM inverter modulation techniques." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/46612047745572483588.

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wu, chin-chung, and 吳錦長. "Space-Vector PWM and Soft-Switching Inverter Design." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/31901818179071106165.

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碩士<br>國立交通大學<br>電機與控制工程系<br>87<br>Soft-switching techniques ( zero current switching or zero voltage switching ) applied to power inverter can substantially improve the performances, allowing high frequency operation and minimization of acoustic noise and EMI, reduction of switching losses, limitation of dv/dt and di/dt stress in the power devices .The quasi-resonant dc link soft switching circuit used in this paper needs additional components such as two switches, a diode, an inductor and a capacitor, the two switches are also soft switching, which produces a minimum losses. The quasi-reson

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Hsu, Pao-Sheng, and 許堡勝. "A Synchronous PWM Controller for A CCFL Royer Inverter." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/84363382960434258762.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>93<br>This thesis presents a synchronous PWM controller for self-oscillation Royer inverter. The dead-time-modulated PWM (DTM-PWM) controller is composed of a monostable circuit and a constant-current charger (CCC). The controller use the primary-side feedback control strategy to eliminate the thermometer effect occurring in the cold-cathode fluorescent lamp (CCFL).The referred sawtooth is composed with a constant-period charge time and a variable dead-time. The synchronizing strategy is conducted by modulating the dead-time according to the resonant frequency of the

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Tsai, Kuei Yih, and 蔡貴義. "A Novel PWM Inverter Using Direct Amplitude Compensation Algorithm." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/32652434967781809771.

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碩士<br>高雄工學院<br>電機工程研究所<br>85<br>A Novel PWM Inverter Using Direct Amplitude Compensation Algorithm Kuei-Yih Tsai * Tsorng-Juu Liang ** Department of Electrical Engineering Kaohsiung Polytechnic Institute ABSTRACT A novel PWM inverter using direct amplitude compensation algorithm is proposed in this paper. The new control algorithm provides the ability to suppress the harmonic

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