Modular structured multilevel inverter as active power filter with unified constant-frequency integration control

The usage of power electronics-based loads is increasing rapidly in recent years. The harmonic and reactive current produced by these nonlinear loads to the common coupling point at where they are connected have caused low power factor, low efficiency and harmful electromagnetic interference to neig...

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Main Author:	Lim, Pei Yi
Format:	Thesis
Language:	English
Published:	2005
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/3592/1/LimPeiYiMFKE2005.pdf
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id	my-utm-ep.3592
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spelling	my-utm-ep.35922018-06-25T03:19:56Z Modular structured multilevel inverter as active power filter with unified constant-frequency integration control 2005-03 Lim, Pei Yi TK Electrical engineering. Electronics Nuclear engineering The usage of power electronics-based loads is increasing rapidly in recent years. The harmonic and reactive current produced by these nonlinear loads to the common coupling point at where they are connected have caused low power factor, low efficiency and harmful electromagnetic interference to neighborhood appliances. The shunt active power filter (APF) is the most common method being employed to produce harmonic current component that cancel the harmonic current from nonlinear load so that the AC main current is sinusoidal. This project presents a Modular Structured Multilevel Inverter (MSMI) as APF with Unified Constant Frequency Integration (UCI) control scheme. This scheme employs an integrator with reset as its core component to generate triangular carrier waveform. Some logical devices such as flip flop and comparators are utilized to produce switching signal to the multilevel inverter. The proposed configuration of MSMI APF with UCI control will be able to achieve unity power factor correction and low Total Harmonic Distortion (THD). Meanwhile, no sensor is required to detect the load and APF current for reference current generation as other previously proposed control method, so that the complicated digital computation can be avoided. MSMI was selected as the power converter because modularized circuit layout is possible for MSMI, which brings the convenience for future expansion in order to achieve higher power ratings for the APF system. Generally, the entire system is simple, robust and reliable. Proposed APF configuration will be compared with the conventional APF for justification of its performance. 2005-03 Thesis http://eprints.utm.my/id/eprint/3592/ http://eprints.utm.my/id/eprint/3592/1/LimPeiYiMFKE2005.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty 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 Lim, Pei Yi Modular structured multilevel inverter as active power filter with unified constant-frequency integration control
description	The usage of power electronics-based loads is increasing rapidly in recent years. The harmonic and reactive current produced by these nonlinear loads to the common coupling point at where they are connected have caused low power factor, low efficiency and harmful electromagnetic interference to neighborhood appliances. The shunt active power filter (APF) is the most common method being employed to produce harmonic current component that cancel the harmonic current from nonlinear load so that the AC main current is sinusoidal. This project presents a Modular Structured Multilevel Inverter (MSMI) as APF with Unified Constant Frequency Integration (UCI) control scheme. This scheme employs an integrator with reset as its core component to generate triangular carrier waveform. Some logical devices such as flip flop and comparators are utilized to produce switching signal to the multilevel inverter. The proposed configuration of MSMI APF with UCI control will be able to achieve unity power factor correction and low Total Harmonic Distortion (THD). Meanwhile, no sensor is required to detect the load and APF current for reference current generation as other previously proposed control method, so that the complicated digital computation can be avoided. MSMI was selected as the power converter because modularized circuit layout is possible for MSMI, which brings the convenience for future expansion in order to achieve higher power ratings for the APF system. Generally, the entire system is simple, robust and reliable. Proposed APF configuration will be compared with the conventional APF for justification of its performance.
format	Thesis
qualification_level	Master's degree
author	Lim, Pei Yi
author_facet	Lim, Pei Yi
author_sort	Lim, Pei Yi
title	Modular structured multilevel inverter as active power filter with unified constant-frequency integration control
title_short	Modular structured multilevel inverter as active power filter with unified constant-frequency integration control
title_full	Modular structured multilevel inverter as active power filter with unified constant-frequency integration control
title_fullStr	Modular structured multilevel inverter as active power filter with unified constant-frequency integration control
title_full_unstemmed	Modular structured multilevel inverter as active power filter with unified constant-frequency integration control
title_sort	modular structured multilevel inverter as active power filter with unified constant-frequency integration control
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2005
url	http://eprints.utm.my/id/eprint/3592/1/LimPeiYiMFKE2005.pdf
_version_	1747814457546899456

Modular structured multilevel inverter as active power filter with unified constant-frequency integration control

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