Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model

In recent years, Renewable Energy Sources (RES) are used to fulfil the growing demand for energy. The integration of RES into the grid incorporates power electronic converters for energy conversion. Voltage unbalance is one of the typical adverse grid disturbances commonly encountered in RES. Power...

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Main Author:	Bohari, Azuwien Aida
Format:	Thesis
Language:	English English English
Published:	2021
Subjects:	TJ807-830 Renewable energy sources
Online Access:	http://eprints.uthm.edu.my/1779/2/AZUWIEN%20AIDA%20BINTI%20BOHARI%20-%20declaration.pdf http://eprints.uthm.edu.my/1779/1/AZUWIEN%20AIDA%20BINTI%20BOHARI%20-%2024p.pdf http://eprints.uthm.edu.my/1779/3/AZUWIEN%20AIDA%20BINTI%20BOHARI%20-%20fulltext.pdf
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spelling	my-uthm-ep.17792021-10-11T08:01:04Z Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model 2021-05 Bohari, Azuwien Aida TJ807-830 Renewable energy sources In recent years, Renewable Energy Sources (RES) are used to fulfil the growing demand for energy. The integration of RES into the grid incorporates power electronic converters for energy conversion. Voltage unbalance is one of the typical adverse grid disturbances commonly encountered in RES. Power quality (PQ) issues have turned out to be major problem and become extra prominent for users from all levels of usage as more nonlinear equipment are connected to the power grid. Using efficient energy conversion topologies by itself is inadequate in controlling system performance. In order to maintain and increase the system stability and reliability, Model Predictive Control (MPC) has been designed for Direct Power Control (DPC) namely Model Predictive Direct Power Control (MPDPC) which improves the PQ referral detection and reduces power ripple. Conservative Power Theory (CPT) has recently emerged to introduce new concepts concerning the definition of power and current terms. Consequently, this study proposed MPDPC of Dual Active Bridge Multilevel Inverter (DABMI) for grid connected application which incorporate the concept of CPT. The objectives of the proposed control approach is to improve the system performance during various conditions specifically for balanced and unbalanced grid voltage condition with two different cases of topology, namely DABMI and DABMI, with floating capacitor voltage. The ultimate goal of this study is to establish an advanced controller using MPDPC based CPT concept which improves steady state, transient state, Total Harmonic Distortion current (THDi) and lessens the power ripple. The complete DABMI along with the proposed MPDPC based CPT have been modeled in Matlab Simulink software and compared with the conventional and improved MPDPC. The simulation results show that the proposed approach manages to improve the system performance to achieve constant active and reactive power and at the same time produce the sinusoidal current under unbalanced testing condition with 0.56% of THDi for asymmetric DABMI topology and 1.12% of THDi for floating capacitor DABMI topology; those are below 5%, which is within the IEEE 519 standard. 2021-05 Thesis http://eprints.uthm.edu.my/1779/ http://eprints.uthm.edu.my/1779/2/AZUWIEN%20AIDA%20BINTI%20BOHARI%20-%20declaration.pdf text en staffonly http://eprints.uthm.edu.my/1779/1/AZUWIEN%20AIDA%20BINTI%20BOHARI%20-%2024p.pdf text en public http://eprints.uthm.edu.my/1779/3/AZUWIEN%20AIDA%20BINTI%20BOHARI%20-%20fulltext.pdf text en validuser phd doctoral Universiti Tun Hussein Onn Malaysia Faculty of Electrical and Electronic Engineering
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TJ807-830 Renewable energy sources
spellingShingle	TJ807-830 Renewable energy sources Bohari, Azuwien Aida Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model
description	In recent years, Renewable Energy Sources (RES) are used to fulfil the growing demand for energy. The integration of RES into the grid incorporates power electronic converters for energy conversion. Voltage unbalance is one of the typical adverse grid disturbances commonly encountered in RES. Power quality (PQ) issues have turned out to be major problem and become extra prominent for users from all levels of usage as more nonlinear equipment are connected to the power grid. Using efficient energy conversion topologies by itself is inadequate in controlling system performance. In order to maintain and increase the system stability and reliability, Model Predictive Control (MPC) has been designed for Direct Power Control (DPC) namely Model Predictive Direct Power Control (MPDPC) which improves the PQ referral detection and reduces power ripple. Conservative Power Theory (CPT) has recently emerged to introduce new concepts concerning the definition of power and current terms. Consequently, this study proposed MPDPC of Dual Active Bridge Multilevel Inverter (DABMI) for grid connected application which incorporate the concept of CPT. The objectives of the proposed control approach is to improve the system performance during various conditions specifically for balanced and unbalanced grid voltage condition with two different cases of topology, namely DABMI and DABMI, with floating capacitor voltage. The ultimate goal of this study is to establish an advanced controller using MPDPC based CPT concept which improves steady state, transient state, Total Harmonic Distortion current (THDi) and lessens the power ripple. The complete DABMI along with the proposed MPDPC based CPT have been modeled in Matlab Simulink software and compared with the conventional and improved MPDPC. The simulation results show that the proposed approach manages to improve the system performance to achieve constant active and reactive power and at the same time produce the sinusoidal current under unbalanced testing condition with 0.56% of THDi for asymmetric DABMI topology and 1.12% of THDi for floating capacitor DABMI topology; those are below 5%, which is within the IEEE 519 standard.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Bohari, Azuwien Aida
author_facet	Bohari, Azuwien Aida
author_sort	Bohari, Azuwien Aida
title	Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model
title_short	Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model
title_full	Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model
title_fullStr	Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model
title_full_unstemmed	Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model
title_sort	advance control of dual active bridge multilevel inverter (dabmi) with open winding transformer (owt) model
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Faculty of Electrical and Electronic Engineering
publishDate	2021
url	http://eprints.uthm.edu.my/1779/2/AZUWIEN%20AIDA%20BINTI%20BOHARI%20-%20declaration.pdf http://eprints.uthm.edu.my/1779/1/AZUWIEN%20AIDA%20BINTI%20BOHARI%20-%2024p.pdf http://eprints.uthm.edu.my/1779/3/AZUWIEN%20AIDA%20BINTI%20BOHARI%20-%20fulltext.pdf
_version_	1747830865500569600

Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model

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