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Dissertations / Theses on the topic 'Hybrid multilevel inverter'

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Published: 4 June 2025

Last updated: 15 July 2025

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1

Ahmed, Eshita. "Hybrid Renewable Energy System Using Doubly-Fed Induction Generator and Multilevel Inverter." Thesis, North Dakota State University, 2012. https://hdl.handle.net/10365/26501.

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The proposed hybrid system generates AC power by combining solar and wind energy converted by a doubly-fed induction generator (DFIG). The DFIG, driven by a wind turbine, needs rotor excitation so the stator can supply a load or the grid. In a variable-speed wind energy system, the stator voltage and its frequency vary with wind speed, and in order to keep them constant, variable-voltage and variable-frequency rotor excitation is to be provided. A power conversion unit supplies the rotor, drawing power either from AC mains or from a PV panel depending on their availability. It consists of a mu

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2

Al, Shammeri Bashar Mohammed Flayyih. "A novel induction heating system using multilevel neutral point clamped inverter." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/8305.

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This thesis investigates a novel DC/AC resonant inverter of Induction Heating (IH) system presenting a Multilevel Neutral Point Clamped (MNPCI) topology, as a new part of power supply design. The main function of the prototype is to provide a maximum and steady state power transfer from converter to the resonant load tank, by achieving zero current switching (ZCS) with selecting the best design of load tank topology, and utilizing the advantage aspects of both the Voltage Fed Inverter (VFI) and Current Fed Inverter (CFI) kinds, therefore it can considered as a hybrid-inverter (HVCFI) category

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3

Liu, Libo [Verfasser]. "A hybrid cascaded multilevel inverter using variable DC-link voltage technique for battery electric vehicles / Libo Liu." Ulm : Universität Ulm, 2021. http://d-nb.info/1226855814/34.

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4

Silva, Ranoyca Nayana Alencar LeÃo e. "Inversor MultinÃvel HÃbrido SimÃtrico TrifÃsico de Cinco NÃveis Baseado na Topologias Half-Bridge/ANPC." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9817.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>Este trabalho apresenta uma topologia de inversor multinÃvel hÃbrido simÃtrico trifÃsico de cinco nÃveis, concebido a partir das estruturas meia ponte e inversor com grampeamento ativo do neutro, adequado para aplicaÃÃes com alta tensÃo e alta potÃncia. SÃo apresentados os possÃveis estados de comutaÃÃo, lÃgica de acionamento, cÃlculo dos esforÃos nos semicondutores, assim como um estudo de perdas. Duas estratÃgias de modulaÃÃo sÃo selecionadas possibilitando a operaÃÃo concomitante de metade dos interruptores em baixa frequÃncia (

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5

Erroui, Najoua. "High power conversion chain for hybrid aircraft propulsion." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0106.

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Ces dernières années, l’utilisation des systèmes de transport aérien s'est considérablement amplifié. Par conséquent, les considérations environnementales actuelles poussent à réduire leur utilisation. Des projets tels que Clean Sky 2 tentent d’apporter une réponse à ce problème, en proposant une réduction des émissions de CO2 et des nuisances sonores. Le recours à l’hybridation de la propulsion des avions réduirait ces émissions en réduisant la taille et la masse des systèmes et en utilisant des systèmes électriques plus efficaces ce qui permettrai d’augmenter le nombre de passager. Cela perm

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6

Nami, Alireza. "A new multilevel converter configuration for high power and high quality applications." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/33216/1/Alireza_Nami_Thesis.pdf.

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The Queensland University of Technology (QUT) allows the presentation of theses for the Degree of Doctor of Philosophy in the format of published or submitted papers, where such papers have been published, accepted or submitted during the period of candidature. This thesis is composed of ten published /submitted papers and book chapters of which nine have been published and one is under review. This project is financially supported by an Australian Research Council (ARC) Discovery Grant with the aim of investigating multilevel topologies for high quality and high power applications, with speci

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7

Vidales, Luna Benjamin. "Architecture de convertisseur intégrant une détection de défauts d'arcs électriques appliquée au sources d'énergie continues d'origine photovoltaïques." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0040.

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Détection de défaut d'arcs intégrée dans un convertisseur intelligent contrôlé par FPGA pour les panneaux photovoltaïques. La mise au point de convertisseur intelligents intégrant des dispositifs de protection est une thématique que cherche à développer l'Institut Technologique de Morelia (Mexique) avec laquelle nous collaborons sur ce projet. L'objectif plus spécifique de ce travail repose sur la détection de défauts d'arc électrique en se basant sur le contrôle intelligent des onduleurs utilisés dans la gestion de l'énergie produite par des panneaux photovoltaïques. Depuis plusieurs années,

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8

Bressan, Marcos Vinicius. "Inversor multinível híbrido baseado na cascata do conversor 3L-NPC e conversores meia ponte." Universidade do Estado de Santa Catarina, 2014. http://tede.udesc.br/handle/handle/2079.

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Made available in DSpace on 2016-12-12T20:27:38Z (GMT). No. of bitstreams: 1 Marcos Vinicius Bressan.pdf: 3794882 bytes, checksum: c55b9af15d7d913dc3d962a990a792c4 (MD5) Previous issue date: 2014-02-18<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This work present a new three-phase hybrid multilevel inverter, that is composed of two topologies in cascaded association. The three-phase NPC and the half-bridge modules are connected in series. This con¬nection increases the number of the output voltage levels, improves the output voltage quality and rises the power process b

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9

Wang, Chi-Yuan, and 王智源. "Design of Grid-Connected Hybrid Multilevel Inverter." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/bqu3d9.

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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>98<br>This thesis proposed a hybrid multi-level inverters having 3 inverters in series with distinct dc link voltages to generate 13 voltage levels in order to reduce output voltage and current distortion and power switch stress and switching frequency. Therefore, EMI (Electro Magnetic Interference) can be alleviated due to lower switching frequency. The experiments are conducted to show the performance of the proposed hybrid multi-level inverters that in stand-alone system to reduce the voltage distortion significantly in load-variation, rectifier load, and pha

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10

Liu, Haiwen. "Design and Application of Hybrid Multilevel Inverter for Voltage Boost." 2009. http://trace.tennessee.edu/utk_graddiss/618.

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Today many efforts are made to research and use new energy sources because the potential for an energy crisis is increasing. Multilevel converters have gained much attention in the area of energy distribution and control due to its advantages in high power applications with low harmonics. They not only achieve high power ratings, but also enable the use of renewable energy sources. The general function of the multilevel converter is to synthesize a desired high voltage from several levels of dc voltages that can be batteries, fuel cells, etc. This dissertation presents a new hybrid multilevel

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11

Yeh, Shou-heng, and 葉守恆. "A Hybrid Phase-shifted SHE Modulation Strategy for Cascaded multilevel Inverter." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/17568919145533752900.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>100<br>This thesis proposes a hybrid modulation strategy, phase-shifted strategy and selective harmonic elimination PWM (SHE PWM) strategy, for the cascaded H-bridge multilevel inverter. The SHE PWM strategy controls the fundamental voltages and eliminates eleventh, thirteenth, twenty-third and twenty-fifth order harmonics with a number of notch angles. These notch angles can be calculated through Fourier analysis. The waveform characters of quarter-wave and half-wave symmetries are useful for solving the notch angles. To set the phase shift of the H-bridge module in

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12

Liu, Ching-Duei, and 劉金堆. "Research of Novel Hybrid Cascade Multilevel Inverter for Dynamic Voltage Restorer Application." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/17864475533062803087.

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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>93<br>In recent years the development of multilevel inverter has been gradually matured for high power and high voltage applications, such as high-voltage DC transmission and high-speed railroad system. Based on the manufacture technology of power semiconductors, the power switches have large voltage and current stresses and it makes the application of multilevel inverter is achieved. Multilevel inverter can use low voltage devices to implement high or medium voltage applications. The more voltage levels are generated on the inverter such that the voltage harmonic

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13

Wanjekeche, Tom. "Modelling and control of a novel hybrid multilevel inverter for photovoltaic integration." 2013. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001113.

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D. Tech. Electrical Engineering.<br>Aims to : 1. Derive the analytical solutions for describing the spectral characteristics of multicarrier based multilevel PWM inverter using double Fourier transform. 2. To carry out a comprehensive modelling of a cascaded NPC/H-bridge for PV-Grid application. 3. To integrate the Cascaded NPC/H-bridge inverter, grid and PV model and analyze the power flow characteristics for varying PV source current and voltage. Detailed analysis of PV and development of MPPT algorithm are not part of this thesis. 4. To develop a novel hybrid phase shifted PWM control algor

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14

Pal, Souradeep. "Investigations on Increasing Linear Modulation Range in Hybrid Multilevel Inverter Fed Induction Machine Drives Regardless of Load Power Factor." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5812.

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Nowadays, multilevel inverters (MLIs) have become a promising alternative to the twolevel inverter in medium voltage high-power applications such as motor drives, active power filters, HVDC, electric vehicles, wind, and solar power generation. In the high-speed motor drives domain, the motor speed reaches above the base speed region. The motor runs in the flux-weakening zone above the designed base speed using either an open-loop variable frequency variable voltage algorithm or a closed-loop field-oriented control algorithm. But, the maximum torque production capability of the motor decre

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15

Arun, Rahul S. "Investigations on Hybrid Multilevel Inverters with a Single DC Supply for Zero and Reduced Common Mode Voltage Operation and Extended Linear Modulation Range Operation for Induction Motor Drives." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/2946.

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Multilevel inverters play a major role in the modern day medium and high power energy conversion processes. The classic two level voltage source inverter generates PWM pole voltage output having two levels with strong fundamental component and harmonics centered around the switching frequency and its multiples. With higher switching frequency, its components can be easily filtered and results in better Total harmonic distortion (THD) output voltage and current. But with higher switching frequency, switching loss of power devices increases and electromagnetic interferences also increases. Also

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16

Arun, Rahul S. "Investigations on Hybrid Multilevel Inverters with a Single DC Supply for Zero and Reduced Common Mode Voltage Operation and Extended Linear Modulation Range Operation for Induction Motor Drives." Thesis, 2016. http://hdl.handle.net/2005/2946.

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Multilevel inverters play a major role in the modern day medium and high power energy conversion processes. The classic two level voltage source inverter generates PWM pole voltage output having two levels with strong fundamental component and harmonics centered around the switching frequency and its multiples. With higher switching frequency, its components can be easily filtered and results in better Total harmonic distortion (THD) output voltage and current. But with higher switching frequency, switching loss of power devices increases and electromagnetic interferences also increases. Also

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17

FOTI, SALVATORE. "Multi-Level Inverters exploiting an Open-end Winding configuration." Doctoral thesis, 2017. http://hdl.handle.net/11570/3104638.

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Multilevel converters are becoming more and more popular, overcoming some key limitations of conventional two-level structures in handling medium voltages and high voltage gradients. Today they provide the ground for the realization of high efficiency energy conversion systems for medium voltage applications, such as pumps, compressors, extruders, fans, grinding mills, rolling mills, conveyors, crushers, blast furnace blowers, gas turbine starters, mixers, mine hoists, reactive power compensation, marine propulsion, wind energy conversion, and railway traction. A detailed overview of multilev

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18

Das, Soumitra. "Study on Pulsewidth Modulation Techniques for a Neutral-Point-Clamped Voltage Source Inverter." Thesis, 2012. http://etd.iisc.ac.in/handle/2005/3169.

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Neutral-point-clamped (NPC) three-level inverter is capable of handling higher dc bus voltage and producing output waveform of better quality than a conventional two-level inverter. The main objective of the present work is to analyze the existing PWM schemes for two-level and three-level inverters in terms of line current ripple, and to design new PWM techniques for the NPC inverter to reduce line current distortion. Various discontinuous PWM or bus-clamping PWM (BCPWM) methods for a two-level voltage source inverter are analyzed in terms of rms line current ripple, which is evaluated by int

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19

Das, Soumitra. "Study on Pulsewidth Modulation Techniques for a Neutral-Point-Clamped Voltage Source Inverter." Thesis, 2012. http://hdl.handle.net/2005/3169.

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Neutral-point-clamped (NPC) three-level inverter is capable of handling higher dc bus voltage and producing output waveform of better quality than a conventional two-level inverter. The main objective of the present work is to analyze the existing PWM schemes for two-level and three-level inverters in terms of line current ripple, and to design new PWM techniques for the NPC inverter to reduce line current distortion. Various discontinuous PWM or bus-clamping PWM (BCPWM) methods for a two-level voltage source inverter are analyzed in terms of rms line current ripple, which is evaluated by int

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20

Macedo, Rui Jorge Matos. "Desenvolvimento de um inversor multinível monofásico para aplicações de qualidade de energia elétrica." Master's thesis, 2015. http://hdl.handle.net/1822/51285.

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Dissertação de mestrado integrado em Engenharia Eletrónica e de Computadores<br>A exigência na qualidade da forma de onda sintetizada pelos inversores de eletrónica de potência é cada vez maior, estando esta qualidade associada a um melhor funcionamento e a um maior tempo de vida por parte das cargas e sistemas associados aos inversores. A melhoria na qualidade das formas de onda geradas pelos inversores tem sido conseguida maioritariamente através do aumento da frequência de comutação dos semicondutores. Esta estratégia provoca perdas de comutação mais elevadas, maior stress aplicado ao

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21

Kaarthik, R. Sudharshan. "Multilevel Dodecagonal Space Vector Structures and Modulation Schemes with Hybrid Topologies for Variable Speed AC Drives." Thesis, 2015. http://etd.iisc.ac.in/handle/2005/2765.

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MULTILEVEL inverters are the preferred choice of converters for electronic power conversion for high power applications. They are gaining popularity in variety of industrial applications including electric motor drives, transportation, energy management, transmission and distribution of power. A large portion of energy conversion systems comprises of multilevel inverter fed induction motor drives. The multilevel inverters are ideal for such applications, since the switching frequency of the devices can be kept low. In conventional two level inverters, to get nearly sinusoidal phase current wav

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22

Kaarthik, R. Sudharshan. "Multilevel Dodecagonal Space Vector Structures and Modulation Schemes with Hybrid Topologies for Variable Speed AC Drives." Thesis, 2015. http://etd.iisc.ernet.in/handle/2005/2765.

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MULTILEVEL inverters are the preferred choice of converters for electronic power conversion for high power applications. They are gaining popularity in variety of industrial applications including electric motor drives, transportation, energy management, transmission and distribution of power. A large portion of energy conversion systems comprises of multilevel inverter fed induction motor drives. The multilevel inverters are ideal for such applications, since the switching frequency of the devices can be kept low. In conventional two level inverters, to get nearly sinusoidal phase current wav

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