Finite control set model predictive control for an LCL-filtered grid-tied inverter with full status estimations under unbalanced grid voltage

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • Xiaotao Chen
  • Weimin Wu
  • Ning Gao
  • Jiahao Liu
  • Frede Blaabjerg

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number2691
Journal / PublicationEnergies
Volume12
Issue number14
Online published13 Jul 2019
Publication statusPublished - Jul 2019

Link(s)

Abstract

This paper proposes a novel finite control set model predictive control (FCS-MPC) strategy with merely grid-injected current sensors for an inductance-capacitance-inductance (LCL)-filtered grid-tied inverter, which can obtain a sinusoidal grid-injected current whether three-phase grid voltages are balanced or not. Compared with the conventional FCS-MPC method, four compositions are added in the proposed FCS-MPC algorithm, where the grid voltage observer (GVO) and Luenberger observer are combined together to achieve full status estimations (including grid voltage, capacitor voltage, inverter-side current, and grid-injected current), while the sequence extractor and the reference generator are applied to eliminate the double frequency ripples of the active or reactive power, or the negative sequence component (NSC) of the grid-injected current caused by the unbalanced grid voltage. Simulation model and experimental platform are established to verify the effectiveness of the proposed FCS-MPC strategy, with full status estimations under both balanced and unbalanced grid voltage conditions.

Research Area(s)

  • Finite control set model predictive control (FCS-MPC), Full status estimations, Grid voltage observer (GVO), Inductance-capacitance-inductance (LCL)-filtered grid-tied inverter, Luenberger observer

Citation Format(s)

Finite control set model predictive control for an LCL-filtered grid-tied inverter with full status estimations under unbalanced grid voltage. / Chen, Xiaotao; Wu, Weimin; Gao, Ning; Liu, Jiahao; Chung, Henry Shu-Hung; Blaabjerg, Frede.

In: Energies, Vol. 12, No. 14, 2691, 07.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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