Cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system

This thesis presents the cascaded Push-Pull and cascaded H-Bridge inverter for total harmonic distortion (THD) reduction in stand-alone photovoltaic (PV) system. This study involves the development of the proposed cascaded Push-Pull inverter and cascaded H-Bridge inverter for stand-alone PV system a...

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Main Author:	Saidatul Shema, Saad
Format:	Thesis
Language:	English
Subjects:	Inverter Total harmonic distortion (THD) Photovoltaic (PV) Solar energy
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32467/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32467/2/Full%20text.pdf
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id	my-unimap-32467
record_format	uketd_dc
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
topic	Inverter Total harmonic distortion (THD) Photovoltaic (PV) Solar energy
spellingShingle	Inverter Total harmonic distortion (THD) Photovoltaic (PV) Solar energy Saidatul Shema, Saad Cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system
description	This thesis presents the cascaded Push-Pull and cascaded H-Bridge inverter for total harmonic distortion (THD) reduction in stand-alone photovoltaic (PV) system. This study involves the development of the proposed cascaded Push-Pull inverter and cascaded H-Bridge inverter for stand-alone PV system applications. This study also involves the data collection of solar irradiance, temperature and PV module electrical output. The output of PV module is in direct current (DC) form. However, the power utilisation in Malaysia is mostly in alternating current (AC) form. Therefore, a sophisticated conversion technique is required in converting the DC signal into AC signal which is known as inverter. The output voltage waveform of ideal inverters should be sinusoidal. However, the waveform of practical inverter is non-sinusoidal and contains harmonics. The aim of this research is mainly to study and develop the suitable inverter design that can be applied in stand-alone PV system. Therefore, three inverter designs which are Push-Pull inverter, cascaded Push-Pull inverter and cascaded H-Bridge inverter have been developed for stand-alone PV system and THD has been analyzed over these three inverters. The data collection of solar irradiance and temperature were analyzed in order to know the potential of solar energy application in Perlis. These data were measured using weather station at the Centre of Excellence for Renewable Energy (CERE), in Kangar, Perlis. Solar irradiance and temperature are two important variables to be considered in designing a PV system because these variables will affect the PV module electrical output. Based on the average monthly solar irradiance for the year 2011, the annual total solar irradiance in Perlis is 4715.95 W/m². This shows that solar irradiance intensity was very high and has a potential for PV power generation in Perlis. Meanwhile, the performances of the proposed inverters have been evaluated in terms of output waveform and THD. The Push-Pull inverter, cascaded Push-Pull inverter and cascaded H-Bridge inverter has been simulated using OrCAD software. These three inverter designs are modelled with the resistive load. Based on the simulation results, the performance of cascaded H-Bridge inverter is better compared to cascaded Push-Pull and Push-Pull inverters. The experiment also has been carried out using inductive load of 20 W AC water pump for Push-Pull and cascaded Push-Pull inverter while the cascaded H-Bridge inverter was tested with pure resistive load of 50 Ω. The experimental result shows that the output waveform of cascaded H-Bridge inverter is nearly to sinusoidal shape and the voltage THD is less than cascaded Push-Pull and Push-Pull inverter. A comparative study between output waveform and THD between simulation and experiment has been conducted and validated. The results obtained show that the experimental results are close enough to the simulation results. A comparative study of output waveform and THD between Push-Pull inverter and the proposed cascaded Push-Pull and cascaded H-bridge inverters has been also conducted. The result shows that the proposed cascaded H-Bridge inverter is better than cascaded Push-Pull inverter in terms of output waveform and THD. It also shows that the THD of proposed cascaded Push-Pull is better than Push-Pull inverter. Overall, these three inverter designs are basically suitable for DC source applications and can be applied for PV system applications which are dependent upon the load application.
format	Thesis
author	Saidatul Shema, Saad
author_facet	Saidatul Shema, Saad
author_sort	Saidatul Shema, Saad
title	Cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system
title_short	Cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system
title_full	Cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system
title_fullStr	Cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system
title_full_unstemmed	Cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system
title_sort	cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Electrical Systems Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32467/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32467/2/Full%20text.pdf
_version_	1747836801117061120
spelling	my-unimap-324672014-03-09T12:44:58Z Cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system Saidatul Shema, Saad This thesis presents the cascaded Push-Pull and cascaded H-Bridge inverter for total harmonic distortion (THD) reduction in stand-alone photovoltaic (PV) system. This study involves the development of the proposed cascaded Push-Pull inverter and cascaded H-Bridge inverter for stand-alone PV system applications. This study also involves the data collection of solar irradiance, temperature and PV module electrical output. The output of PV module is in direct current (DC) form. However, the power utilisation in Malaysia is mostly in alternating current (AC) form. Therefore, a sophisticated conversion technique is required in converting the DC signal into AC signal which is known as inverter. The output voltage waveform of ideal inverters should be sinusoidal. However, the waveform of practical inverter is non-sinusoidal and contains harmonics. The aim of this research is mainly to study and develop the suitable inverter design that can be applied in stand-alone PV system. Therefore, three inverter designs which are Push-Pull inverter, cascaded Push-Pull inverter and cascaded H-Bridge inverter have been developed for stand-alone PV system and THD has been analyzed over these three inverters. The data collection of solar irradiance and temperature were analyzed in order to know the potential of solar energy application in Perlis. These data were measured using weather station at the Centre of Excellence for Renewable Energy (CERE), in Kangar, Perlis. Solar irradiance and temperature are two important variables to be considered in designing a PV system because these variables will affect the PV module electrical output. Based on the average monthly solar irradiance for the year 2011, the annual total solar irradiance in Perlis is 4715.95 W/m². This shows that solar irradiance intensity was very high and has a potential for PV power generation in Perlis. Meanwhile, the performances of the proposed inverters have been evaluated in terms of output waveform and THD. The Push-Pull inverter, cascaded Push-Pull inverter and cascaded H-Bridge inverter has been simulated using OrCAD software. These three inverter designs are modelled with the resistive load. Based on the simulation results, the performance of cascaded H-Bridge inverter is better compared to cascaded Push-Pull and Push-Pull inverters. The experiment also has been carried out using inductive load of 20 W AC water pump for Push-Pull and cascaded Push-Pull inverter while the cascaded H-Bridge inverter was tested with pure resistive load of 50 Ω. The experimental result shows that the output waveform of cascaded H-Bridge inverter is nearly to sinusoidal shape and the voltage THD is less than cascaded Push-Pull and Push-Pull inverter. A comparative study between output waveform and THD between simulation and experiment has been conducted and validated. The results obtained show that the experimental results are close enough to the simulation results. A comparative study of output waveform and THD between Push-Pull inverter and the proposed cascaded Push-Pull and cascaded H-bridge inverters has been also conducted. The result shows that the proposed cascaded H-Bridge inverter is better than cascaded Push-Pull inverter in terms of output waveform and THD. It also shows that the THD of proposed cascaded Push-Pull is better than Push-Pull inverter. Overall, these three inverter designs are basically suitable for DC source applications and can be applied for PV system applications which are dependent upon the load application. Universiti Malaysia Perlis (UniMAP) 2013 Thesis en http://dspace.unimap.edu.my:80/dspace/handle/123456789/32467 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32467/1/Page%201-24.pdf eb2c892ebec4627e38f7fb24ba769421 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32467/2/Full%20text.pdf 0d223a8987bc4fbbab58bd94a85abf6c http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/32467/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Inverter Total harmonic distortion (THD) Photovoltaic (PV) Solar energy School of Electrical Systems Engineering

Cascaded push-pull and cascaded h-bridge inverter for total harmonic distortion reduction in stand-alone photovoltaic system

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