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Gradient-based fixed switching frequency direct model predictive control for grid-connected converters with LCL filters

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Details

Original languageEnglish
Title of host publication2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)
PublisherIEEE
ISBN (Electronic)978-9-0758-1531-3
ISBN (Print)978-1-7281-2361-5
DOIs
Publication statusPublished - Sep 2019
Publication typeA4 Article in a conference publication
EventEUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS -
Duration: 1 Jan 1900 → …

Conference

ConferenceEUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS
Period1/01/00 → …

Abstract

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.

Keywords

  • Control methods for electrical systems, Optimal control, Converter control, Harmonics, Modelling, Pulse Width Modulation (PWM), Voltage Source Converter (VSC)

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