Mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system

This thesis addresses the mitigation of triplen harmonic distortion in 3-phase 4-wire electrical distribution system that supplies balanced and unbalanced non-linear loads. The main objectives of this thesis are to study, design and build passive mitigation devices suitable for mitigation of the tri...

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Main Author:	Ahmad, Azhar
Format:	Thesis
Language:	English English
Published:	2007
Subjects:	T Technology (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/14850/1/Mitigation%20of%20triplen%20harmonics%20in%203-phase%204-wire%20electrical%20distribution%20system%20-%20Copy.pdf http://eprints.utem.edu.my/id/eprint/14850/2/Mitigation%20of%20triplen%20harmonics%20in%203-phase%204-wire%20electrical%20distribution%20system.pdf
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spelling	my-utem-ep.148502022-11-11T10:50:03Z Mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system 2007 Ahmad, Azhar T Technology (General) TK Electrical engineering. Electronics Nuclear engineering This thesis addresses the mitigation of triplen harmonic distortion in 3-phase 4-wire electrical distribution system that supplies balanced and unbalanced non-linear loads. The main objectives of this thesis are to study, design and build passive mitigation devices suitable for mitigation of the triplen harmonic problems. There are four steps involved in building a harmonic mitigation device. Firstly, the requirements for the device basic mitigation technique and system installation are discussed. Second, the design parameters are calculated and determined to match the components. Third, the investigation is done using off the shelf and specially ordered components for the construction of mitigation device. The final step involves testing of these devices in laboratory environment. There are four selected passive mitigation devices built in this research. The devices are wye-zigzag transformer, neutral 3rd harmonic blocking series filter, 3-phase 3rd harmonic blocking series filter, and a 3-phase 3rd harmonic trap shunt filter. The performances of the various devices are compared. It is found that the wye-zigzag transformer is the most efficient device in reducing the triplen harmonic currents 'n 3-phase 4-wire electrical distribution system. In contrast the LC tuned 3-phase 3rd harmonic shunt filter generates its own harmonics and the LC tuned neutral 3rd harmonic series filter excessively raises the system neutral voltage. Meanwhile, the 3-phase 3rd harmonic blocking series filter performs well in reducing the triplen harmonic currents of single-phase loads. This thesis is a starting point towards a more detailed research in the development of more harmonic mitigation devices. Further investigation into the device's components characteristic such as material and construction of inductors, different types capacitor that influence the performance of mitigation device could be pursued. Finally, the development of an active filter based on DSP and power electronics would be a challenging future research in mitigating triplen and other harmonics in 3-phase 4-wire distribution system. 2007 Thesis http://eprints.utem.edu.my/id/eprint/14850/ http://eprints.utem.edu.my/id/eprint/14850/1/Mitigation%20of%20triplen%20harmonics%20in%203-phase%204-wire%20electrical%20distribution%20system%20-%20Copy.pdf text en public http://eprints.utem.edu.my/id/eprint/14850/2/Mitigation%20of%20triplen%20harmonics%20in%203-phase%204-wire%20electrical%20distribution%20system.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=31817&query_desc=kw%2Cwrdl%3A%200000039893 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Electrical Engineering Sulaiman, Marizan Omar, Rosli
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Sulaiman, Marizan Omar, Rosli
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) Ahmad, Azhar Mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system
description	This thesis addresses the mitigation of triplen harmonic distortion in 3-phase 4-wire electrical distribution system that supplies balanced and unbalanced non-linear loads. The main objectives of this thesis are to study, design and build passive mitigation devices suitable for mitigation of the triplen harmonic problems. There are four steps involved in building a harmonic mitigation device. Firstly, the requirements for the device basic mitigation technique and system installation are discussed. Second, the design parameters are calculated and determined to match the components. Third, the investigation is done using off the shelf and specially ordered components for the construction of mitigation device. The final step involves testing of these devices in laboratory environment. There are four selected passive mitigation devices built in this research. The devices are wye-zigzag transformer, neutral 3rd harmonic blocking series filter, 3-phase 3rd harmonic blocking series filter, and a 3-phase 3rd harmonic trap shunt filter. The performances of the various devices are compared. It is found that the wye-zigzag transformer is the most efficient device in reducing the triplen harmonic currents 'n 3-phase 4-wire electrical distribution system. In contrast the LC tuned 3-phase 3rd harmonic shunt filter generates its own harmonics and the LC tuned neutral 3rd harmonic series filter excessively raises the system neutral voltage. Meanwhile, the 3-phase 3rd harmonic blocking series filter performs well in reducing the triplen harmonic currents of single-phase loads. This thesis is a starting point towards a more detailed research in the development of more harmonic mitigation devices. Further investigation into the device's components characteristic such as material and construction of inductors, different types capacitor that influence the performance of mitigation device could be pursued. Finally, the development of an active filter based on DSP and power electronics would be a challenging future research in mitigating triplen and other harmonics in 3-phase 4-wire distribution system.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Ahmad, Azhar
author_facet	Ahmad, Azhar
author_sort	Ahmad, Azhar
title	Mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system
title_short	Mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system
title_full	Mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system
title_fullStr	Mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system
title_full_unstemmed	Mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system
title_sort	mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Electrical Engineering
publishDate	2007
url	http://eprints.utem.edu.my/id/eprint/14850/1/Mitigation%20of%20triplen%20harmonics%20in%203-phase%204-wire%20electrical%20distribution%20system%20-%20Copy.pdf http://eprints.utem.edu.my/id/eprint/14850/2/Mitigation%20of%20triplen%20harmonics%20in%203-phase%204-wire%20electrical%20distribution%20system.pdf
_version_	1776103085367623680

Mitigation of triplen harmonics in 3-phase 4-wire electrical distribution system

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