Switched capacitor multilevel inverter using PWM technique

For the last decades, the increasing demand for renewable energy resources and their applications of high voltage, multilevel inverter (MLI) become very popular and globally recognized for several industrial applications and it has been under research and development with successful industrial appli...

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Main Author: Mohamed, Abdirizak Abdihafid
Format: Thesis
Language:English
Published: 2021
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Online Access:http://eprints.utm.my/id/eprint/99414/1/AbdirizakAbdihafidMohamedMKE2021.pdf
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spelling my-utm-ep.994142023-02-27T04:35:05Z Switched capacitor multilevel inverter using PWM technique 2021 Mohamed, Abdirizak Abdihafid TK Electrical engineering. Electronics Nuclear engineering For the last decades, the increasing demand for renewable energy resources and their applications of high voltage, multilevel inverter (MLI) become very popular and globally recognized for several industrial applications and it has been under research and development with successful industrial applications due to its capacity to produce high levels of voltage output, low THD, low EMI and reduced switching stress on switching devices. However, renewable energy resources such as solar and wind energy for their output are not always fixed due to changes of their input constantly. To boost their output and to convert into alternate current (AC) at the same time with one circuit, switched capacitor inverter is required. In this project, a Switched-Capacitor multilevel inverter with 7-level output comparing between different kinds of pulse width modulation (PWM) technique namely, phase disposition (PD-SPWM), phase opposition disposition (POD-SPWM), and Alternate phase opposition disposition (APOD-SPWM) has been proposed. The main objectives of this project are to simulate the modelled 7-level switched capacitor multilevel inverter using pulse width modulation technique with different modulation index, to observe the performance of the switching patterns of various switches, output voltage, and FFT analysis of modified multilevel inverter, to perform analysis of the charging and discharging time of the capacitors and to analyze using PD-SPWM for pure resistive load and RL load and step change of load from no load to RL load and from low RL load to high RL load. The proposed topology uses a smaller number of switches and produces less harmonic output voltage using the strategy of pulse width modulation (PWM). To validate the viability of the proposed topography and its strategy of switching, a circuit for seven-level MLI is developed and done in MATLAB/SIMULINK software tool. 2021 Thesis http://eprints.utm.my/id/eprint/99414/ http://eprints.utm.my/id/eprint/99414/1/AbdirizakAbdihafidMohamedMKE2021.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:149735 masters Universiti Teknologi Malaysia Faculty of Engineering - School of Electrical Engineering
institution Universiti Teknologi Malaysia
collection UTM Institutional Repository
language English
topic TK Electrical engineering
Electronics Nuclear engineering
spellingShingle TK Electrical engineering
Electronics Nuclear engineering
Mohamed, Abdirizak Abdihafid
Switched capacitor multilevel inverter using PWM technique
description For the last decades, the increasing demand for renewable energy resources and their applications of high voltage, multilevel inverter (MLI) become very popular and globally recognized for several industrial applications and it has been under research and development with successful industrial applications due to its capacity to produce high levels of voltage output, low THD, low EMI and reduced switching stress on switching devices. However, renewable energy resources such as solar and wind energy for their output are not always fixed due to changes of their input constantly. To boost their output and to convert into alternate current (AC) at the same time with one circuit, switched capacitor inverter is required. In this project, a Switched-Capacitor multilevel inverter with 7-level output comparing between different kinds of pulse width modulation (PWM) technique namely, phase disposition (PD-SPWM), phase opposition disposition (POD-SPWM), and Alternate phase opposition disposition (APOD-SPWM) has been proposed. The main objectives of this project are to simulate the modelled 7-level switched capacitor multilevel inverter using pulse width modulation technique with different modulation index, to observe the performance of the switching patterns of various switches, output voltage, and FFT analysis of modified multilevel inverter, to perform analysis of the charging and discharging time of the capacitors and to analyze using PD-SPWM for pure resistive load and RL load and step change of load from no load to RL load and from low RL load to high RL load. The proposed topology uses a smaller number of switches and produces less harmonic output voltage using the strategy of pulse width modulation (PWM). To validate the viability of the proposed topography and its strategy of switching, a circuit for seven-level MLI is developed and done in MATLAB/SIMULINK software tool.
format Thesis
qualification_level Master's degree
author Mohamed, Abdirizak Abdihafid
author_facet Mohamed, Abdirizak Abdihafid
author_sort Mohamed, Abdirizak Abdihafid
title Switched capacitor multilevel inverter using PWM technique
title_short Switched capacitor multilevel inverter using PWM technique
title_full Switched capacitor multilevel inverter using PWM technique
title_fullStr Switched capacitor multilevel inverter using PWM technique
title_full_unstemmed Switched capacitor multilevel inverter using PWM technique
title_sort switched capacitor multilevel inverter using pwm technique
granting_institution Universiti Teknologi Malaysia
granting_department Faculty of Engineering - School of Electrical Engineering
publishDate 2021
url http://eprints.utm.my/id/eprint/99414/1/AbdirizakAbdihafidMohamedMKE2021.pdf
_version_ 1776100596743405568