Virtual variable sampling discrete fourier transform based selective odd-order harmonic repetitive control of DC/AC converters

Liu, Z., Zhang, B., Zhou, K. and Wang, J. (2018) Virtual variable sampling discrete fourier transform based selective odd-order harmonic repetitive control of DC/AC converters. IEEE Transactions on Power Electronics, 33(7), pp. 6444-6452. (doi:10.1109/TPEL.2017.2764020)

[img]
Preview
Text
150129.pdf - Accepted Version

4MB

Abstract

This paper proposes a frequency adaptive discrete Fourier transform (DFT) based repetitive control (RC) scheme for DC/AC converters. By generating infinite magnitude on the interested harmonics, the DFT-based RC offers a selective harmonic scheme to eliminate waveform distortion. The traditional DFT-based selective harmonic RC, however, is sensitive to frequency fluctuation since even very small frequency fluctuation leads to a severe magnitude decrease. To address the problem, virtual variable sampling method, which creates an adjustable virtual delay unit to closely approximate a variable sampling delay, is proposed to enable the DFT-based selective harmonic RC to be frequency adaptive. Moreover, a selective odd-order harmonic DFT filter is developed to deal with the dominant odd order harmonic. Because it halves the number of sampling delays in the DFT filter, the system transient response gets nearly 50% improvement. A comprehensive series of experiments of the proposed VVS DFT-based selective odd-order harmonic RC controlled programmable AC power source under frequency variations are presented to verify the effectiveness of the proposed method.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Zhou, Dr Keliang
Authors: Liu, Z., Zhang, B., Zhou, K., and Wang, J.
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:IEEE Transactions on Power Electronics
Publisher:IEEE
ISSN:0885-8993
ISSN (Online):1941-0107
Published Online:17 October 2017
Copyright Holders:Copyright © 2017 IEEE
First Published:First published in IEEE Transactions on Power Electronics 33(7):6444-6452
Publisher Policy:Reproduced in accordance with the publisher copyright policy

University Staff: Request a correction | Enlighten Editors: Update this record