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Permanent link (DOI): https://doi.org/10.7939/R3J09WC6T

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Unbalance Voltage Compensation Using Power Electronics Interfaced DG Open Access

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Other title
Subject/Keyword
Distributed Generation
Voltage Unbalance Compensation
Power Electronics
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Lu,Jinghang
Supervisor and department
Yunwei Li (Electrical and Computer Engineering)
Examining committee member and department
S. Ali Khajehoddin (Electrical and Computer Engineering)
Qing Zhao(Electrical and Computer Engineering)
Yunwei Li (Electrical and Computer Engineering)
Department
Department of Electrical and Computer Engineering
Specialization
Energy Systems
Date accepted
2014-09-16T09:11:32Z
Graduation date
2014-11
Degree
Master of Science
Degree level
Master's
Abstract
With the increasing application of renewable energy systems, many Distributed Generation (DG) systems have been connected to power systems. Power electronic converters are usually used as effective interfaces of DG unit. These interfaces convert either DC or non-grid AC voltages of DGs to the grid compatible AC voltage. On the other hand, unbalanced voltage caused by local load adversely affects distribution network’s power quality. Therefore, operating DG unit under unbalanced voltage and using grid-interfacing converter to improve the grid’s power quality is becoming an important research topic This thesis first reviews grid-interfacing converter control methods that provide various flexible operations under unbalanced voltage. Furthermore, to reduce the impact on converter dc link due to unbalanced current injection, two DG control strategies for voltage unbalance compensation are proposed. Their validity was verified by Matlab/Simulink and a lab prototype.
Language
English
DOI
doi:10.7939/R3J09WC6T
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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