Gadelovits, S., Zhong, Q.C., Kadirkamanathan, V. orcid.org/0000-0002-4243-2501 et al. (1 more author) (2017) UDE-based controller equipped with a multi-band-stop filter to improve the voltage quality of inverters. IEEE Transactions on Industrial Electronics, 64 (9). pp. 7433-7443. ISSN 0278-0046
Abstract
In this paper, a method to directly shape the output impedance of an inverter is proposed to reduce the total harmonic distortion of the output voltage, based on the uncertainty and disturbance estimator (UDE)-based robust control framework. It is shown that, because of the two-degree-of-freedom feature of the UDE-based control strategy, the UDE filter directly affects the inverter output impedance. A multi-band-stop filter instead of a commonly adopted low-pass filter is then proposed to directly minimize the output impedance around the harmonics to reduce the effect of nonlinear loads and assure robustness to frequency variations. Two trade-offs are revealed: one between filter bandwidth and stability and the other between robustness and the number of harmonics suppressed. The effectiveness of the proposed control strategy is fully supported by experimental results.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © Institute of Electrical and Electronics Engineers, 2017. This is an author produced version of a paper subsequently published in IEEE Transactions on Industrial Electronics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Photovoltaic generators; maximum power point tracking; perturbation frequency |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 18 May 2017 08:54 |
Last Modified: | 28 Jul 2023 09:03 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/TIE.2017.2698371 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:116211 |