Finite-Set Quasi-Sliding Mode Predictive Control of LC-Filtered Voltage Source Inverters

Changming Zheng, Zheng Gong, Xiaojie Wu, Tomislav Dragicevic, Jose Rodriguez, Frede Blaabjerg

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Three-phase voltage source inverters (VSIs) with output LC filter are preferred topologies to provide voltage and frequency support for islanded ac microgrids. This article proposes a finite-set quasi-sliding model predictive control (FS-QSMPC) scheme for LC-filtered VSIs to improve the output-voltage quality. By explicitly including a predictive sliding-mode function into the cost function, reduced steady-state ripple and enhanced robustness to model mismatches are achieved. Besides, theoretical analysis of stability and robustness for the proposed FS-QSMPC is given. Analytical tuning of the weighting factor is also derived to decrease the tuning effort. Simulations and experiments verify the presented approach.

Original languageEnglish
Pages (from-to)11968-11978
Number of pages11
JournalIEEE Transactions on Industrial Electronics
Volume69
Issue number12
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • Cost function
  • Model predictive control (MPC)
  • Predictive models
  • Robustness
  • sliding mode control (SMC)
  • stability analysis
  • Switches
  • Tuning
  • Uninterruptible power systems
  • Voltage control
  • weighting factor

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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