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Dissertations / Theses on the topic 'PWM Converter'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Hu, Jian. "Deadbeat controlled PWM converter." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0032/MQ64227.pdf.

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2

Hu, Jian 1971. "Deadbeat contolled PWM converter." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30251.

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The thesis has evaluated the suitability of Digital Deadbeat Control of the Sinusoidal Pulse Width Modulation-Voltage Source Converter (SPWM-VSC) for electric power utility applications.<br>The Digital Deadbeat Controlled SPWM-VSC operates as a current controller where short circuit faults are not destructive. In addition, it eliminates the L-R mode at the ac terminals of the SPWM-VSC. The thesis considers methods to immunize the control from system and parameter uncertainties. A novel closed-loop Digital Deadbeat Control has been proposed. A Phase Lock Loop (PLL) suitable for this application

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3

Stihi, Omar. "Single phase controlled current PWM converter." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63844.

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4

Cazzell, Gregory A. "Output Impedance in PWM Buck Converter." Wright State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=wright1247006982.

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5

Kulkarni, Ashok. "Characteristics of a controlled current PWM converter." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66006.

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6

Nishimoto, Masahiro. "Analytical study of a controlled current PWM converter." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65432.

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7

Ye, Zhihong. "Modeling and Control of Parallel Three-Phase PWM Converters." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/29476.

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This dissertation studies modeling and control issues of parallel three-phase pulse-width modulated (PWM) converters. The converters include three-phase boost rectifiers, voltage source inverters, buck rectifiers and current source inverters. The averaging of the parallel converters is performed based on a generic functional switching unit, which is called a phase leg in boost rectifiers and voltage source inverters, and a rail arm in buck rectifiers and current source inverters. Based on phase-leg and rail-arm averaging, the developed models are not only equivalent to the conventional three-p

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8

Van, der Merwe Wim. "PWM converter for a highly non-linear plasma load." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/3025.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2005.<br>This thesis discuss an investigation into the applicability of modern high frequency power conversion technology in the plasma mineral processing industry. The physics governing the plasma in a processing environment are analysed to provide a clear understanding of this plasma as electrical load. This was done to create an electrical model for the plasma as load and gain understanding into the electrical supply requirements. Modern high frequency power conversion technology is contrasted with thy

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9

Shen, Jian. "GTO Pulsed Width Modulated (PWM) converter for railway traction applications." Thesis, University of Salford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308484.

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10

Dalvi, Mahesh. "Computer controlled generation of PWM waveform using harmonic distortion minimization scheme." Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1177442328.

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11

Lee, Dong-Myung. "A Voltage Sag Supporter Utilizing A PWM-Switched Autotransformer." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5215.

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This research suggests a novel voltage control scheme that can compensate for voltage sag and swell conditions in three-phase power systems. Faults occurring in power distribution systems or facilities in plants cause the voltage sag or swell. For sensitive loads, even voltage sags of short duration can cause serious problems in the entire system. In order to mitigate power interruptions, this research proposes a scheme called Voltage Sag Supporter utilizing a PWM (Pulse Width Modulation)-Switched Autotransformer. The proposed scheme is able to quickly recognize the voltage sag or swell co

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12

Wan, Hongmei. "High Efficiency DC-DC Converter for EV Battery Charger Using Hybrid Resonant and PWM Technique." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/32343.

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The battery charger plays an important role in the development of electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs).This thesis focuses on the DC-DC converter for high voltage battery charger and is divided into four chapters. The background related to EV battery charger is introduced, and the topologies of isolated DC-DC converter possibly applied in battery charge are sketched in Chapter 1. Since the EV battery charger is high voltage high power, the phase-shifted full bridge and LLC converters, which are popularly used in high power applications, are discussed in detail i

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13

Gitau, Michael N. "Optimal PWM switching strategy for single-phase AC-DC converters." Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/7205.

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The thesis describes an optimal selective harmonic elimination strategy suitable for singlephase AC-DC converter-fed traction drives. The objective is to eliminate low-order supply current harmonics, including those injected into the supply due to load-side current ripple. Other advantages that the switching strategy has to offer over phase-control include improved supply power factor, reduced VA consumption for a given demand speed and load, reduced torque and speed ripple and smaller armature circuit smoothing inductance. The effect of field current boost on the dynamic response of the drive

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14

Dasari, Anuroop Reddy. "The steady-state analysis of the non-isolated and isolated type SEPIC PWM DC-DC converters for CCM." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1599672947653384.

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15

Fraser, Malcolm E. "Power factor-corrected transformerless three-phase PWM converter for UPS applications." Thesis, Loughborough University, 1996. https://dspace.lboro.ac.uk/2134/33002.

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This thesis describes the research of a new transformerless three phase PWM converter for uninterruptible power supplies (UPS) applications. The removal of the bulky three phase transformer in larger power UPS can provide a significant saving in weight and cost of the overall system. The converter consists of a new four-wire rectifier coupled with a four-wire inverter via a dc bus. The supply and load neutral may be connected together without any neutral current flowing into the utility regardless of the load on the inverter. This allows the load to be at the same potential as the utility. The

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16

Kathi, Lokesh. "Steady-State Analysis of PWM Z-Bridge Source DC-DC Converter." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1453223069.

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17

Vlatkovic, Vlatko. "Small-signal analysis of the phase-shifted zero-voltage switched PWM converter." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-12172008-063107/.

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18

Xiao, Yuan. "PWM GTO AC to DC current source converter for high power applications." Thesis, Teesside University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411190.

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19

Nisar, Kashif. "DC to DC converter for smart dust." Thesis, Linköpings universitet, Institutionen för systemteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-77247.

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This work describes the implementation of DC to DC converter for Smart Dust in 65 nm CMOS technology. The purpose of a DC to DC converter is to convert a battery voltage of 1 Vto a lower voltage of 0.5 V used by the processor. The topology used in this DC to DC converteris of Buck type which converts a higher voltage to lower voltage with the advantage of givinghigh efficiency about 75%. The system uses PWM (Pulse width modulation) technique. It usesnon-overlapping clock generation technique for reducing the power consumption. The systemprovides up to 5 mA load current and has power consumptio

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20

Manh, Vir Varinder. "An Integrated High Efficiency DC-DC Converter in 65 nm CMOS." Thesis, Linköpings universitet, Elektroniksystem, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-61237.

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This thesis work describes the implementation perspective of an integrated high efficiency DC-DC converter implemented in 65 nm CMOS. The implemented system employs the Buck converter topology to down-convert the input battery voltages. This converter offers its use as a power management unit in portable battery operated devices. This thesis work includes the description of a basic Buck converter along with the various key equations involved which describe the Buck operation as well as are used to deduce the requirements for the various internal building blocks of the system. A detailed descri

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21

Rashid, Tariq. "Perturbation model based analysis of a three phase PWM ac-dc power converter." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336819.

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22

Salvatierra, Thomas R. "PWM Buck Converter as a Dynamic Power Supply for EnvelopeTracking and Amplitude Modulation." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1453826990.

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23

Lee, John C. "Magamp post-regulator applied to a quasi-resonant converter and magamp operation under extreme load condition in a PWM converter." Thesis, This resource online, 1988. http://scholar.lib.vt.edu/theses/available/etd-11072008-063123/.

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24

Al-Qrimli, Fadhil Abbas Mehdi. "An energy conversion scheme using a permanent magnet generator and a PWM, GTO converter." Thesis, University of Liverpool, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304736.

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25

Dong, Dong. "Modeling and Control Design of a Bidirectional PWM Converter for Single-phase Energy Systems." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/33163.

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This thesis proposes a complete modeling and control design methodology for a multifunctional single-phase bidirectional PWM converter in renewable energy systems. There is a generic current loop for different modes of operation to ease the transition between different modes, including stand-alone inverter mode, grid-tied inverter mode, grid-tied rectifier mode and grid-tied charger/discharger mode. Under stand-alone mode operation, ac voltage regulation is of importance because of the sensitive loads. In this thesis, different multi-loop-based control schemes are investigated and compared, es

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26

Kolakowski, Terry. "Fuzzy Logic Control of a Switched-Inductor PWM DC-DC Buck Converter in CCM." Wright State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=wright1251310342.

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27

Galigekere, Veda Prakash Nagabhushana. "Stead-State and Small-Signal Modeling of Power-Stage of PWM Z-Source Converter." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1333994573.

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28

Shoubaki, Ehab. "UNIFIED LARGE AND SMALL SIGNAL STATE-SPACE BASED MODELING AND SYMBOLIC SIMULATION FOR PWM CONVERTERS." Doctoral diss., University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3960.

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In this Dissertation, which concentrates on discrete modeling for control purposes of DC/DC converters and simulation through symbolic techniques. A Unified Discrete State-Space Model for power converters in CCM is presented. Two main approaches to arriving at the discrete model are used. The first approach involves an impulse function approximation of the duty cycle modulation of the converter switches, and this approach results in a small signal discrete model. The Second approach is direct and does not involve any approximation of the modulation, this approach yields both a large signal non

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29

Gall, Jonathan Henrik. "Zero-Voltage-Switching PWM Full-Bridge Converter for Onboard Charging of Battery of Electric Vehicles." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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This thesis gives a description of working principles of a Phase-Shifted Full-Bride PWM ZVS converter using a Full-Wave rectifying output as well as a Double Current Rectifier. After a description of each topology and some differences between the two topologies, a hybrid solution is presented. The hybrid configuration is a combined FW and DCR, in an interleaved connection. By the opening and closing of a switch that is located between the two output stages, either a DCR-DCR or DCR-FW rectifying output stage is used for the converter. This allows for dynamic turns ratio of the step-up transform

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30

Zhao, Xiaonan. "A High-efficiency Isolated Hybrid Series Resonant Microconverter for Photovoltaic Applications." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/78312.

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Solar energy as one type of the renewable energy becomes more and more popular which has led to increase the photovoltaic (PV) installations recently. One of the PV installations is the power conditioning system which is to convert the maximum available power output of the PV modules to the utility grid. Single-phase microinverters are commonly used to integrate the power to utility grid in modular power conditioning system. In the two-stage microinverter, each PV module is connected with a power converter which can transfer higher output power due to the tracking maximum power point (MPP) ca

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31

Urciuoli, Damian. "Switching Stage Design and Implementation for an Efficient Three-Phase 5kW PWM DC-DC Converter." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/34378.

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With the development of fuel cell based power systems, the need for more advanced DC-DC power converters has become apparent. In such applications DC-DC converters provide an important link between low voltage fuel cell sources and inverter buses operating at significantly higher voltages. Advancements in converter efficiency, cost reduction, and size reduction are the most necessary. These challenges are formidable, even when considering the improvements made to conventional DC-DC topologies. However, it can be possible to achieve these criteria through the implementation of more advanced

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32

Franklin, Calenia L. "Design and Simulation of Boost DC - DC Pulse Width Modulator (PWM) Feed-Forward Control Converter." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1594392395108745.

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33

Lee, Julie JoAnn. "Steady-State and Small-Signal Modeling of a PWM DC-DC Switched-Inductor Buck-Boost Converter in CCM." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1340804411.

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34

Zackiewicz, Curt Stephen. "DC-DC Power Converter Design for a Portable Affordable Welder System (PAWS)." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1300807818.

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35

Shoubaki, Ehab Hamed. "UNIFIED LARGE AND SMALL SIGNAL DISCRETE-SPACE MODELING FOR PWM CONVERTERS IN CCM." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3961.

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In this Thesis a Unified Discrete State-Space Model for power converters in CCM is presented. Two main approaches to arriving at the discrete model are used. The first approach involves an impulse function approximation of the duty cycle modulations of the converter switches , and this approach results in a small signal discrete model. The Second approach is direct and does not involve any approximation of the modulations , this approach yields both a large signal nonlinear discrete model and a linear small signal model. Harmonic analysis of the converter states at steady-state is done for ste

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36

Lee, Julie JoAnn. "Analysis of a Small-Signal Model of a PWM DC-DC Buck-Boost Converter in CCM." Wright State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=wright1187882268.

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37

Colmenares, Juan. "ANALYSIS, IMPLEMENTATION AND EXPERIMENTAL EVALUATION OF A PHASE SHIFTED PWM CONTROL SYSTEM FOR A MODULAR MULTILEVEL CONVERTER." Thesis, KTH, Elektrisk energiomvandling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-53658.

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Nowadays, it is problematic to connect only one power semiconductor switch directly to the grid due to the high voltage range. In order to solve this difficulty, a new type of power converter has been introduced as a solution in high power applications. Multilevel Converters use high speed switching components, avoiding the problem of linking them directly to the grid by connecting single devices among multiple DC levels. Differents Multilevel topologies have been developed in the last few years. Multilevel Converters are more complex to modulate than the two level traditional converters becau

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38

Fan, Bo-Wen, and 范柏文. "PWM/PFM Mixed Modulation Controller for Twin-Buck Converter." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/67943607213286577432.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>101<br>In the thesis, we apply the state average method to model the time-average linear dynamic equation, which is used to design a gain scheduled linear quadratic optimal controller. Because the standard modulation method of the twin-buck converter is PFM(Pulse-Frequency Modulation) and twin-buck converter owns the soft-switching characteristic, the voltage step-down ratio, that is, control force can not be lowered less than 0.5. For expanding the range of control force of converter, we modulate the converter by means of mixed modulation of PWM/PFM. With the form

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39

Tsai, Chih-Hsin, and 蔡至鑫. "Spread-Spectrum Clock Generators for PWM Converter." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/56484709613161936953.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>96<br>In today's integrated circuit systems, there is a thriving demand for better efficiency and faster speed. Most of these devices have clock generators, digital clock circuits, and radio-frequency (RF) circuits, which are the most significant contributors of electromagnetic interference (EMI).Currents and voltages present in these circuits, such as those found in their signal traces, lead to greater EMI when operating in high frequencies. In present systems, EMI may well interfere with the operation of its source circuit as well as the equipment adjacent to it.

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40

Lin, Yen-Sheng, and 林晏生. "Digitally Controlled PWM for DC-DC Converter." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/29560258537137251611.

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碩士<br>國立交通大學<br>電機學院IC設計產業專班<br>96<br>The purpose of this thesis is to study and produce a full digitally controlled PWM for DC-DC converting circuit based on FPGA.This thesis is aimed at building a mathematically effective module equal to a Digitally Controlled PWM for DC-DC Converter; therefore, to explore the circuit quality, the pulse-width modulating fashion, and the way of realizing the converter. The controlling structure is based on the PID controller as its designing model, including the designing of the proportional controller, the integral controller, and the derivative controller,

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41

Cheng, Wen-Chieh, and 鄭文傑. "PWM Controller ICs for DC-DC Converter." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/49547821618673899875.

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碩士<br>大葉大學<br>資訊工程學系碩士班<br>95<br>This thesis describes two complete PWM controller IC for switching power converters. One is analog PWM controller IC and another is digital PWM controller IC. Due to rapid development of CMOS technologies, more and more transistors can be fabricated on a single chip. Consumer electronic products also have been developed rapidly in these years. The power management ICs such as the highly efficient low-voltage switch-mode DC-DC converters are mandatory in these devices for maximizing the system run time. The analog-control scheme for the switching conve

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42

LEE, CHIA-CHUN, and 李嘉峻. "A DC-DC BUCK CONVERTER IC WITH PWM/PFM DUAL MODE CONTROL." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/16548803252225836529.

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碩士<br>大同大學<br>電機工程學系(所)<br>104<br>A DC-DC bulk converter has been designed and simulated with TSMC 0.35 CMOS models. To improve the conversion efficiency, the converter is designed to switch between two modes, PWM mode for heavy load and PFM mode for light load. This converter with on-chip current sensor can operate from 300 kHz to 600kHz with supply voltage from 3 to 5 V suitable for battery supply applications. With a 3.7V supply, switching frequency 262.47kHz, a 10-µF off-chip capacitor and a10-µH off-chip inductor, the HSPICE simulation results show that the output ripple voltage is about

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43

Liu, Chia-Szu, and 劉佳賜. "A CMOS DC-DC Buck Converter with PWM/PFM Dual-Mode Control." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/2jefwj.

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碩士<br>大同大學<br>電機工程學系(所)<br>107<br>This thesis proposes a DC-DC buck converter with TSMC 0.35μm CMOS process, using pulse width modulation (PWM) and pulse frequency modulation (PFM) dual mode switching to reduce output voltage ripple and improve conversion efficiency. This circuit is designed for products with the power supply input voltage from 3V to 5V. The output voltage is stepped down to 3V. The operating frequency of PWM is 1MHz. The HSPICE simulation results show that the output voltage ripple is less than 15mV and the optimum conversion efficiency is from 93% to 95% at 150mA load curren

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Yu, Liao-Ting, and 廖庭鈺. "Analysis of Full Bridge Converter Based on Symmetric PWM and Phase-Shift PWM." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/826bwn.

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碩士<br>國立雲林科技大學<br>電機工程系<br>107<br>This thesis studies a full-bridge converter based on symmetric PWM and phase-shift PWM schemes. The PWM control schemes are implemented by using the integrated circuits UCC3895 and KIA494P. The main advantage of phase-shift PWM scheme is the soft switching operation on power MOSFET. The drawback of symmetric PWM scheme is hard switching loss on power devices. The current double rectifier topology is used on the secondary side to reduce the output current ripple. Finally, a laboratory prototype is built and experiments are provided to show the circuit performan

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45

Huang, Jia-Ching, and 黃嘉卿. "Design of a Current-Mode High-Efficiency PWM/PSM DC-DC Buck Converter." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/b8gk63.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>106<br>Owing to the development of technology, the applications of portable electronic devices have been broadened to a wider scope. Due to global energy depletion and people’s desire of lighter and more convenient products, the need for portable electronic devices has also increased significantly. This trend makes the effective use of power and the reduction of the size of power management module become essential research topics. To be exact, the miniaturization of power management modules and the improvement of conversion efficiency become primary consideration. 　

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46

Ma, Shaohua. "Optimal PWM control of a stacked multicell converter." 2005. http://hdl.handle.net/1993/18047.

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47

Hsiao, Chia Wen, and 蕭嘉文. "Digital PWM controller for DC-DC Boost Converter." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/96469072407712879427.

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碩士<br>長庚大學<br>電機工程學系<br>98<br>In this paper , a digital pulse width modulation controller of the dc-dc switching converter designed for the integrated circuit is implemented and verified .The technology used in pulse width modulation is popularly applied in present power electronic field . This technology is used to improve the efficiency and save more energy resources in the design of the circuit. And that, the design in this digital pulse width modulation controller is based on the theory and improvement of the PI controller and the pwm controller .Comparing with the method look up table use

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黃照霖. "A Study of Boost PWM Soft-Switching Converter." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/45911820671121329664.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>96<br>Abstract This thesis presents Boost converter with a passive snubber to reduce the switching losses. The circuit topology of the converter consists of traditional Boost converter and a passive snubber, the snubber composed of a capacitor, an inductor and diodes, is able to operate with soft switching in a pulse width modulation and improve the traditional switching power converter since high switching frequency accompanied high switching losses. Finally simulation and experimental results are given to verify it’s correctly and practicability.

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49

Wang, Chen-Yi, and 王偵亦. "Efficiency Model for Power Converter with PWM Jitter." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/47051367823007617559.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>104<br>The objective of this thesis is to investigate the impact of the PWM Duty Cycle jitter (PWM Jitter) on the power converter as well as to establish its efficiency model. By adopting a strategy based on the proposed efficiency model, designers can avoid the efficiency drop caused by PWM jitter. In this thesis, the origin of PWM jitter and the efficiency of power converter are presented first. The synchronous buck DC converters are selected for illustration. Next, a methodology by using the state-space averaging method to find out the impact of the PWM jitter on

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Lin, Syuan-Li, and 林軒立. "Analysis of the Zero-Voltage Transition PWM Boost Converter." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/y6gnjj.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>102<br>The purpose of this thesis is to analyze a new Zero-Voltage Transition PWM Boost Converter. The converter operates with an active snubber cell, which provides main switch to turn ON with zero-voltage transition (ZVT) and to turn OFF with zero-current transition (ZCT). Furthermore, all semiconductor devices of this converter operate with soft switching at high frequency. The structure of this converter is simple and easy to control. The operation principle and steady-state analysis of the novel boost converter are presented. Finally, the converter feature is p

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