Modular structured multilevel inverter as a three-phase shunt active power filter with unified constant frequency integration control

In recent years, the usage of power electronics equipments continues to increase, due to the increased usage of nonlinear loads and distributed power sources. These nonlinear loads generate harmonics and reactive currents, which lead to low power factor, low energy efficiency, low power capacity, an...

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Main Author:	Ismaail, Ali Ibrahim
Format:	Thesis
Language:	English
Published:	2007
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/6089/1/AliIbrahimIsmaailMFKE2007.pdf
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id	my-utm-ep.6089
record_format	uketd_dc
spelling	my-utm-ep.60892018-08-26T04:43:10Z Modular structured multilevel inverter as a three-phase shunt active power filter with unified constant frequency integration control 2007-05 Ismaail, Ali Ibrahim TK Electrical engineering. Electronics Nuclear engineering In recent years, the usage of power electronics equipments continues to increase, due to the increased usage of nonlinear loads and distributed power sources. These nonlinear loads generate harmonics and reactive currents, which lead to low power factor, low energy efficiency, low power capacity, and harmful disturbance to other appliances. These reactive currents will distort the voltage at the point of common coupling, reducing the quality of power delivered to other consumers on the network. Nowadays shunt active power filters (APFs), due to their flexibility and reliability are one of the most versatile and efficient solutions in the compensation of the load power factor and current harmonics. APFs provide only the harmonic and reactive power to cancel the one generated by the nonlinear loads or sources. This project presents a Modular Structured Multilevel Inverter (MSMI) as a three-phase shunt active power filter with Unified Constant Frequency Integration (UCI) control. Using MSMI APF with a unified constant-frequency integration controller, a unity power factor and low total harmonic distortion can be realized in all three phases. The proposed control approach employs one integrator with reset, along with several logic and linear components such as flip-flops, comparators, and clock. There are several important features of this implementation, it does not require three-phase load current and phase voltage sensing, also the nontrivial task of calculating harmonics and reactive current component is not required, and finally, it does not use any multipliers. These features make the proposed control approach simple, robust and reliable. The proposed three-phase MSMI APF with UCI control was simulated using MATLAB/Simulink. Simulation results have demonstrated a good suppression in harmonic distortion and improvement in the power factor of the power system. 2007-05 Thesis http://eprints.utm.my/id/eprint/6089/ http://eprints.utm.my/id/eprint/6089/1/AliIbrahimIsmaailMFKE2007.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:62069 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 Ismaail, Ali Ibrahim Modular structured multilevel inverter as a three-phase shunt active power filter with unified constant frequency integration control
description	In recent years, the usage of power electronics equipments continues to increase, due to the increased usage of nonlinear loads and distributed power sources. These nonlinear loads generate harmonics and reactive currents, which lead to low power factor, low energy efficiency, low power capacity, and harmful disturbance to other appliances. These reactive currents will distort the voltage at the point of common coupling, reducing the quality of power delivered to other consumers on the network. Nowadays shunt active power filters (APFs), due to their flexibility and reliability are one of the most versatile and efficient solutions in the compensation of the load power factor and current harmonics. APFs provide only the harmonic and reactive power to cancel the one generated by the nonlinear loads or sources. This project presents a Modular Structured Multilevel Inverter (MSMI) as a three-phase shunt active power filter with Unified Constant Frequency Integration (UCI) control. Using MSMI APF with a unified constant-frequency integration controller, a unity power factor and low total harmonic distortion can be realized in all three phases. The proposed control approach employs one integrator with reset, along with several logic and linear components such as flip-flops, comparators, and clock. There are several important features of this implementation, it does not require three-phase load current and phase voltage sensing, also the nontrivial task of calculating harmonics and reactive current component is not required, and finally, it does not use any multipliers. These features make the proposed control approach simple, robust and reliable. The proposed three-phase MSMI APF with UCI control was simulated using MATLAB/Simulink. Simulation results have demonstrated a good suppression in harmonic distortion and improvement in the power factor of the power system.
format	Thesis
qualification_level	Master's degree
author	Ismaail, Ali Ibrahim
author_facet	Ismaail, Ali Ibrahim
author_sort	Ismaail, Ali Ibrahim
title	Modular structured multilevel inverter as a three-phase shunt active power filter with unified constant frequency integration control
title_short	Modular structured multilevel inverter as a three-phase shunt active power filter with unified constant frequency integration control
title_full	Modular structured multilevel inverter as a three-phase shunt active power filter with unified constant frequency integration control
title_fullStr	Modular structured multilevel inverter as a three-phase shunt active power filter with unified constant frequency integration control
title_full_unstemmed	Modular structured multilevel inverter as a three-phase shunt active power filter with unified constant frequency integration control
title_sort	modular structured multilevel inverter as a three-phase shunt 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	2007
url	http://eprints.utm.my/id/eprint/6089/1/AliIbrahimIsmaailMFKE2007.pdf
_version_	1747814624228540416

Modular structured multilevel inverter as a three-phase shunt active power filter with unified constant frequency integration control

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