Comparative study of switching strategies for cascaded H-bridge multilevel inverter

Multilevel inverters are capable of producing AC staircase output waveform without bulky passive filter. Therefore, among different types of inverters the multilevel inverters are gaining popularity for photovoltaic applications. If the switching angle of every voltage level is not carefully chos...

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Main Author:	Usman Bashir, Tayab
Format:	Thesis
Language:	English
Subjects:	Multilevel inverters Inverters Cascaded H-bridge multilevel inverter Multilevel inverters > Design and construction
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61983/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61983/2/Full%20text.pdf
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id	my-unimap-61983
record_format	uketd_dc
spelling	my-unimap-619832019-09-25T03:38:31Z Comparative study of switching strategies for cascaded H-bridge multilevel inverter Usman Bashir, Tayab Dr. Leong Jenn Hwai Multilevel inverters are capable of producing AC staircase output waveform without bulky passive filter. Therefore, among different types of inverters the multilevel inverters are gaining popularity for photovoltaic applications. If the switching angle of every voltage level is not carefully chosen then the total harmonic distortion (THD) of voltage output waveform may become unacceptable. In this project, four switching angle arrangement techniques are applied to a cascaded H-bridge multilevel inverter. The performance of 3-, 5-, 7-, 9-, 11-, 13- and 15-level cascaded H-bridge multilevel inverter with four switching angle arrangement techniques at different power factor loads have been evaluated and compared by using PSIM software. The purpose of evaluating and comparing the simulation results of cascaded H-bridge multilevel inverter with different power factor loads is to analyze the effects of inductive load on the THD of voltage and current. Simulation results show that one of technique is able to generate an output voltage and current waveform with lowest THD whilst one of the power factor loads is also able to produce the output current waveform with lowest THD. In addition, one of the techniques produces output voltage waveform with the highest fundamental voltage component. Universiti Malaysia Perlis (UniMAP) 2014 Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/61983 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61983/1/Page%201-24.pdf fd1d1fd9298b1930d443378fa7c783bf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61983/2/Full%20text.pdf a13a3881f72c49729b41daf3853e30aa http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61983/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Multilevel inverters Inverters Cascaded H-bridge multilevel inverter Multilevel inverters -- Design and construction School of Electrical Systems Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Dr. Leong Jenn Hwai
topic	Multilevel inverters Inverters Cascaded H-bridge multilevel inverter Multilevel inverters -- Design and construction
spellingShingle	Multilevel inverters Inverters Cascaded H-bridge multilevel inverter Multilevel inverters -- Design and construction Usman Bashir, Tayab Comparative study of switching strategies for cascaded H-bridge multilevel inverter
description	Multilevel inverters are capable of producing AC staircase output waveform without bulky passive filter. Therefore, among different types of inverters the multilevel inverters are gaining popularity for photovoltaic applications. If the switching angle of every voltage level is not carefully chosen then the total harmonic distortion (THD) of voltage output waveform may become unacceptable. In this project, four switching angle arrangement techniques are applied to a cascaded H-bridge multilevel inverter. The performance of 3-, 5-, 7-, 9-, 11-, 13- and 15-level cascaded H-bridge multilevel inverter with four switching angle arrangement techniques at different power factor loads have been evaluated and compared by using PSIM software. The purpose of evaluating and comparing the simulation results of cascaded H-bridge multilevel inverter with different power factor loads is to analyze the effects of inductive load on the THD of voltage and current. Simulation results show that one of technique is able to generate an output voltage and current waveform with lowest THD whilst one of the power factor loads is also able to produce the output current waveform with lowest THD. In addition, one of the techniques produces output voltage waveform with the highest fundamental voltage component.
format	Thesis
author	Usman Bashir, Tayab
author_facet	Usman Bashir, Tayab
author_sort	Usman Bashir, Tayab
title	Comparative study of switching strategies for cascaded H-bridge multilevel inverter
title_short	Comparative study of switching strategies for cascaded H-bridge multilevel inverter
title_full	Comparative study of switching strategies for cascaded H-bridge multilevel inverter
title_fullStr	Comparative study of switching strategies for cascaded H-bridge multilevel inverter
title_full_unstemmed	Comparative study of switching strategies for cascaded H-bridge multilevel inverter
title_sort	comparative study of switching strategies for cascaded h-bridge multilevel inverter
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Electrical Systems Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61983/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/61983/2/Full%20text.pdf
_version_	1747836850770280448

Comparative study of switching strategies for cascaded H-bridge multilevel inverter

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