A Cost-Effective and Low-Complexity Predictive Control for Matrix Converters under Unbalanced Grid Voltage Conditions

Wenjing Xiong, Yao Sun, Jianheng Lin, Mei Su, Hanbing Dan*, Marco Rivera, Josep M. Guerrero

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

14 Citations (Scopus)
16 Downloads (Pure)

Abstract

Due to no dc-link energy storage element in the matrix converter (MC), its input and output performances are highly sensitive to the unbalanced grid conditions. In order to mitigate the adverse effects of the unbalanced grid voltages, this paper proposes a simple and effective control strategy based on the finite-control set model predictive control (FCS-MPC). In this case, an extended instantaneous power theory is adapted to generate the source current references. As a result, both sinusoidal source currents and balanced output currents are ensured. Besides, complicated positive and negative sequence decomposition is avoided. Furthermore, an extended state observer (ESO) is designed to eliminate the grid voltages sensors, which not only estimates the grid voltages but also provides the delayed grid voltage information required for the source current reference calculation. The effectiveness of the proposed method is verified by the simulation and experimental results.
Original languageEnglish
Article number8678641
JournalIEEE Access
Volume7
Pages (from-to)43895-43905
Number of pages11
ISSN2169-3536
DOIs
Publication statusPublished - Apr 2019

Keywords

  • Extended state observer
  • Finite-control set model predictive control
  • Matrix converter
  • Unbalanced gird voltages

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