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)
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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 |
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