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Robust Stability of Grid-Connected Voltage Source Converter With Phase-Locked Loop

  • Xi'an Jiaotong University

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The robust stability of one single voltage source converter (VSC) connected to a bus via the line is studied in this letter. Considering arbitrary bounded perturbations from uncertainties, the perturbed system model is firstly proposed. Then, one switched system is constructed to investigate the stability of the perturbed system, and it is proved that the stability region of the switched system is the subset of that of the perturbed system. Finally, the stability region of the switched system is obtained by the inverse-time (backwards) integration starting from the unstable equilibrium point, which is also the conservative stability region of the perturbed system.

Original languageEnglish
Pages (from-to)3981-3984
Number of pages4
JournalIEEE Transactions on Power Systems
Volume38
Issue number4
DOIs
StatePublished - 1 Jul 2023

Keywords

  • Grid-connected voltage source converter
  • energy function
  • limit cycle
  • phase-locked loop
  • robust stability

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