Han, H, Zhang, L, Oghorada, OJK et al. (1 more author) (2020) A delta-connected MMCC-based active power conditioner for unbalanced load compensation and harmonic elimination. International Journal of Electrical Power & Energy Systems, 118. 105811. ISSN 0142-0615
Abstract
Modular multilevel cascaded converters (MMCC) are seen in medium and high voltage applications and have gained attention from industry. This paper presents new control techniques to improve accuracy and control response speed when applied to a delta-connected MMCC- based Active Power Conditioner used for negative sequence and harmonic current elimination. A novel reference current generation scheme combining a notch filter with Decoupled Double Synchronous Reference Frame (DDSRF) is proposed which can extract the negative sequence and a selection of dominant harmonic currents accurately with the minimum time delay. Fast and accurate tracking the extracted reference current is obtained by using a model-based predictive controller with a derivative reference current term. The control strategy is applied to an experimental delta-connected MMCC-APC and the resultant waveforms are shown and analysed, confirming that the grid current quality after compensation has improved significantly.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Elsevier Ltd. All rights reserved. This is an author produced version of an article published in International Journal of Electrical Power & Energy Systems. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Delta; Modular multilevel converter; Active power filter; Unbalanced load; Harmonics analysis |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Communication & Power Networks (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 24 Aug 2020 10:38 |
Last Modified: | 08 Jan 2021 01:39 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ijepes.2019.105811 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:164632 |