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Gradient-Based Fixed Switching Frequency Direct Model Predictive Control for Grid-Connected Converters with LCL Filters
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Electric Power and Energy Systems. (Power Electronics)
Tampere University, Finland.ORCID iD: 0000-0002-6668-7701
ABB Corporate Research, Baden-Dättwil, Switzerland.ORCID iD: 0000-0002-3650-1785
2019 (English)In: Proceedings of the IEEE European Conference on Power Electronics and Applications, Genova, Italy, Sept. 2019, Institute of Electrical and Electronics Engineers (IEEE), 2019Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

This paper presents a direct model predictive control (MPC) scheme for a three-phase two-level grid-connected converter with an LCL filter. Despite the absence of a modulator, a fixed switching frequency and a discrete current harmonic spectrum are achieved. With a refined objective function of the optimization problem underlying MPC, grid current distortions comparable to those of carrier-based pulse width modulation (CB-PWM) in idealized conditions are produced. Moreover, the grid current harmonics meet the stringent limits imposed by grid standards. A performance evaluation is conducted to highlight the potential benefits of the proposed method.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2019.
Keywords [en]
Control methods for electrical systems, Optimal control, Converter control, Harmonics, Modelling, Pulse Width Modulation (PWM), Voltage Source Converter (VSC)
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-264968DOI: 10.23919/EPE.2019.8915403ISBN: 978-9-0758-1531-3 (electronic)OAI: oai:DiVA.org:kth-264968DiVA, id: diva2:1376161
Conference
21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), Sep 2-5 2019, Genova, Italy
Note

QC 20191216

Available from: 2019-12-08 Created: 2019-12-08 Last updated: 2019-12-16Bibliographically approved

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fulltext(1252 kB)15 downloads
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