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Permanent link (DOI): https://doi.org/10.7939/R35K9P

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Virtual Impedance Based Selective Harmonic Compensation (VI-SHC) PWM Open Access

Descriptions

Other title
Subject/Keyword
Selective harmonic compensation
current source converter
Virtual impedance
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Ni, Ruoshui
Supervisor and department
Li, Yunwei (Electrical and Computer Engineering)
Examining committee member and department
Li, Yunwei (Electrical and Computer Engineering)
Dubljevic, Stevan (Chemical and Materials Engineering)
Salmon, John (Electrical and Computer Engineering)
Department
Department of Electrical and Computer Engineering
Specialization
Energy System
Date accepted
2012-05-28T13:53:13Z
Graduation date
2012-11
Degree
Master of Science
Degree level
Master's
Abstract
A low-switching PWM scheme is presented for a high power current source rectifier (CSR) system to actively compensate the grid background harmonics and improve the line current harmonic performance. The PWM scheme described above is placed in context with the existing techniques review of the traditional selective harmonic elimination (SHE) and the recently developed selective harmonic compensation (SHC) PWM. The switching angles calculation method based on the global optimization approach is designed to develop a user-friendly software tool for the SHE and SHC PWM switching angles calculation. A novel virtual impedance based selective harmonic compensation (VI-SHC) PWM scheme is described in the thesis with a view to overcoming the disadvantages of the SHE and SHC PWM methods existing in the implementation. The VI-SHC PWM does not require to measure the grid voltage harmonics, does not rely on an accurate CSR system model, and therefore is very robust for practical implementation.
Language
English
DOI
doi:10.7939/R35K9P
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.
Citation for previous publication
R. Ni, Y. W. Li, Z. Cheng, and N. Zargari, “Virtual Impedance Based Adaptive Harmonic Compensation (VI-AHC) PWM for Current Source Rectifiers,” submitted to Proc. IEEE ECCE 2012.R. Ni and Y. W. Li, “The experimental verification of the selective harmonic compensation using virtual impedance concept,” Industrial report for Rockwell Automation Canada, 12 pages, Oct. 2011.R. Ni and Y. W. Li, “Selective harmonic compensation using virtual impedance concept,” Industrial report for Rockwell Automation Canada, 25 pages, Jul. 2011.R. Ni and Y. W. Li, “A developed SHE angles computation software tool based on MATLAB global optimization,” Industrial report for Rockwell Automation Canada, 15 pages, Mar. 2011.

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