Design and performance evaluation of a unity power factor converter for wind energy conversion systems

Wind turbine driven Permanent Magnet Synchronous Generators (PMSG) find increasing applications due to their numerous advantages. Small scale stand-alone wind energy systems are receiving considerable attention due to their importance in locations that are far flung and where conventional generation...

Full description

Saved in:
Bibliographic Details
Main Author: Nirnaya Sarangan
Other Authors: Ali Iftekhar Maswood
Format: Theses and Dissertations
Language:English
Published: 2012
Subjects:
Online Access:https://hdl.handle.net/10356/49985
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-49985
record_format dspace
spelling sg-ntu-dr.10356-499852023-07-04T17:08:55Z Design and performance evaluation of a unity power factor converter for wind energy conversion systems Nirnaya Sarangan Ali Iftekhar Maswood School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Wind turbine driven Permanent Magnet Synchronous Generators (PMSG) find increasing applications due to their numerous advantages. Small scale stand-alone wind energy systems are receiving considerable attention due to their importance in locations that are far flung and where conventional generation and grid interface may not be possible.In this work, a front-end diode bridge rectifier employing three current control methods- Average Current Control (ACC), Hysteresis Current Control (HCC) and Equal Distance Current Control (EDCC) - has been incorporated in a wind turbine- generator driven stand-alone system. These are implemented by controlling the switching periods of three bidirectional switches in the Unity Power Factor (UPF) front-end rectifier. The objective is to justify the relevance of this topology in a Wind Energy Conversion System (WECS) to achieve high input power factor, low Total Harmonic Distortion (THD) in the input line currents and extraction of maximum possible real power from the generator. From the studies conducted, it is concluded that the ACC consistently achieves an input power factor higher than 0.995, while the HCC achieves an input power factor of 0.994. This high input power factor is achieved during the constant wind speed as well as the variable wind speed conditions. The THD of the line currents is 6%- 7% for the ACC depending on the wind speed while it is 6%- 8% for the HCC. These values are acceptable for stand-alone systems. The efficiency of mechanical power to electrical power conversion is also high at 97% - 99%. The AC power available at the input of the UPF rectifier is transferred without significant losses to the DC bus link output. The system is simple in its topological construction and proves to be highly reliable and is appropriate for implementation in low to medium power stand-alone systems. MASTER OF ENGINEERING (EEE) 2012-05-28T04:29:12Z 2012-05-28T04:29:12Z 2012 2012 Thesis Nirnaya, S. (2012). Design and performance evaluation of a unity power factor converter for wind energy conversion systems. Master’s thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/49985 10.32657/10356/49985 en 119 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering
spellingShingle DRNTU::Engineering::Electrical and electronic engineering
Nirnaya Sarangan
Design and performance evaluation of a unity power factor converter for wind energy conversion systems
description Wind turbine driven Permanent Magnet Synchronous Generators (PMSG) find increasing applications due to their numerous advantages. Small scale stand-alone wind energy systems are receiving considerable attention due to their importance in locations that are far flung and where conventional generation and grid interface may not be possible.In this work, a front-end diode bridge rectifier employing three current control methods- Average Current Control (ACC), Hysteresis Current Control (HCC) and Equal Distance Current Control (EDCC) - has been incorporated in a wind turbine- generator driven stand-alone system. These are implemented by controlling the switching periods of three bidirectional switches in the Unity Power Factor (UPF) front-end rectifier. The objective is to justify the relevance of this topology in a Wind Energy Conversion System (WECS) to achieve high input power factor, low Total Harmonic Distortion (THD) in the input line currents and extraction of maximum possible real power from the generator. From the studies conducted, it is concluded that the ACC consistently achieves an input power factor higher than 0.995, while the HCC achieves an input power factor of 0.994. This high input power factor is achieved during the constant wind speed as well as the variable wind speed conditions. The THD of the line currents is 6%- 7% for the ACC depending on the wind speed while it is 6%- 8% for the HCC. These values are acceptable for stand-alone systems. The efficiency of mechanical power to electrical power conversion is also high at 97% - 99%. The AC power available at the input of the UPF rectifier is transferred without significant losses to the DC bus link output. The system is simple in its topological construction and proves to be highly reliable and is appropriate for implementation in low to medium power stand-alone systems.
author2 Ali Iftekhar Maswood
author_facet Ali Iftekhar Maswood
Nirnaya Sarangan
format Theses and Dissertations
author Nirnaya Sarangan
author_sort Nirnaya Sarangan
title Design and performance evaluation of a unity power factor converter for wind energy conversion systems
title_short Design and performance evaluation of a unity power factor converter for wind energy conversion systems
title_full Design and performance evaluation of a unity power factor converter for wind energy conversion systems
title_fullStr Design and performance evaluation of a unity power factor converter for wind energy conversion systems
title_full_unstemmed Design and performance evaluation of a unity power factor converter for wind energy conversion systems
title_sort design and performance evaluation of a unity power factor converter for wind energy conversion systems
publishDate 2012
url https://hdl.handle.net/10356/49985
_version_ 1772826187422236672