Control system and design and transient analysis of a grid integrated wind turbine

Wind power is one of the most reliable and developed renewable energy source. The share of wind power with respect to total installed power capacity is increasing worldwide. It is now more significant that the researchers focus more on technical improvements of wind energy conversion system. A va...

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Main Author:	Shaon, Ahmed
Format:	Thesis
Language:	English
Subjects:	Wind power Wind turbine Renewable energy Wind energy conversion system
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59929/1/p.1-24..pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59929/2/Full%20Text.pdf
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spelling	my-unimap-599292019-05-10T07:57:41Z Control system and design and transient analysis of a grid integrated wind turbine Shaon, Ahmed Assoc. Prof. Shamshul Bahar Yaakob Wind power is one of the most reliable and developed renewable energy source. The share of wind power with respect to total installed power capacity is increasing worldwide. It is now more significant that the researchers focus more on technical improvements of wind energy conversion system. A variable speed wind turbine typically uses a maximum power tracking algorithm in order to optimize energy acquisition from wind. Although many algorithms has been introduced by the researchers in the past, to enhance the power extraction capability but they all fall short when it comes to computational simplicity and convergence time. In this thesis, a new maximum power point tracking algorithm for wind energy conversion systems has been proposed to get rid of these problems. The algorithm is based on the optimum relationship between active power and dc link voltage. The dc power is calculated from voltage and current, which are read by the algorithm. The conventional perturbation approach has been modified by introducing a new perturbing parameter to reduce computational time and system complexity. The proposed system also include a Fuzzy- PI pitch angle controller in order to analyze the output power characteristic of wind generator from cut-in wind speed to rated wind speed. A detail electromechanical model of a wind turbine with variable speed and variable pitch control is developed in Matlab/Simulink environment in order to analyze the performance of the proposed control system. The proposed model is also compared with conventional system and the comparison results show that the proposed system increases power absorption by five to seven percent. This research also investigates the transient stability of the hybrid power system with increased penetration level of wind turbine in order to find out the fault current behaviour of a grid integrated wind generator. With increasing penetration of wind power, the power system dominated by synchronous machines experience a change in dynamics and operational characteristics. Given this assertion, a systematic approach has been developed to analyze the impact of increased penetration on transient stability of a large power system. The primary basis of the method is to replace the induction generators with equivalent conventional round rotor synchronous wind generators. In this regard, the modes that are both detrimentally and beneficially affected by fault current have been identified. The results for transient stability analysis show that inducing synchronous wind generator increases transient stability of a system. This research work resulted in a new way to maximize energy extraction from wind. It also identifies the effect of wind generators on grid stability. Discussions of the obtained results were made and several factors were listed. These findings helped in proposing useful modifications for the system in order to enhance its performance. Universiti Malaysia Perlis (UniMAP) 2014 Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/59929 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59929/1/p.1-24..pdf e89d491faa03e7f47b679f36e8c1eba8 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59929/2/Full%20Text.pdf 2d2ef872ca418ecde7b150d1f57ad1b9 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59929/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Wind power Wind turbine Renewable energy Wind energy conversion system School of Electrical System Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Assoc. Prof. Shamshul Bahar Yaakob
topic	Wind power Wind turbine Renewable energy Wind energy conversion system
spellingShingle	Wind power Wind turbine Renewable energy Wind energy conversion system Shaon, Ahmed Control system and design and transient analysis of a grid integrated wind turbine
description	Wind power is one of the most reliable and developed renewable energy source. The share of wind power with respect to total installed power capacity is increasing worldwide. It is now more significant that the researchers focus more on technical improvements of wind energy conversion system. A variable speed wind turbine typically uses a maximum power tracking algorithm in order to optimize energy acquisition from wind. Although many algorithms has been introduced by the researchers in the past, to enhance the power extraction capability but they all fall short when it comes to computational simplicity and convergence time. In this thesis, a new maximum power point tracking algorithm for wind energy conversion systems has been proposed to get rid of these problems. The algorithm is based on the optimum relationship between active power and dc link voltage. The dc power is calculated from voltage and current, which are read by the algorithm. The conventional perturbation approach has been modified by introducing a new perturbing parameter to reduce computational time and system complexity. The proposed system also include a Fuzzy- PI pitch angle controller in order to analyze the output power characteristic of wind generator from cut-in wind speed to rated wind speed. A detail electromechanical model of a wind turbine with variable speed and variable pitch control is developed in Matlab/Simulink environment in order to analyze the performance of the proposed control system. The proposed model is also compared with conventional system and the comparison results show that the proposed system increases power absorption by five to seven percent. This research also investigates the transient stability of the hybrid power system with increased penetration level of wind turbine in order to find out the fault current behaviour of a grid integrated wind generator. With increasing penetration of wind power, the power system dominated by synchronous machines experience a change in dynamics and operational characteristics. Given this assertion, a systematic approach has been developed to analyze the impact of increased penetration on transient stability of a large power system. The primary basis of the method is to replace the induction generators with equivalent conventional round rotor synchronous wind generators. In this regard, the modes that are both detrimentally and beneficially affected by fault current have been identified. The results for transient stability analysis show that inducing synchronous wind generator increases transient stability of a system. This research work resulted in a new way to maximize energy extraction from wind. It also identifies the effect of wind generators on grid stability. Discussions of the obtained results were made and several factors were listed. These findings helped in proposing useful modifications for the system in order to enhance its performance.
format	Thesis
author	Shaon, Ahmed
author_facet	Shaon, Ahmed
author_sort	Shaon, Ahmed
title	Control system and design and transient analysis of a grid integrated wind turbine
title_short	Control system and design and transient analysis of a grid integrated wind turbine
title_full	Control system and design and transient analysis of a grid integrated wind turbine
title_fullStr	Control system and design and transient analysis of a grid integrated wind turbine
title_full_unstemmed	Control system and design and transient analysis of a grid integrated wind turbine
title_sort	control system and design and transient analysis of a grid integrated wind turbine
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Electrical System Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59929/1/p.1-24..pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/59929/2/Full%20Text.pdf
_version_	1747836839925907456

Control system and design and transient analysis of a grid integrated wind turbine

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