Design Considerations of Current-Limiting Control for Grid-Forming Capability Enhancement of VSCs under Large Grid Disturbances

Heng Wu, Xiongfei Wang, Liang Zhao

Research output: Contribution to journalJournal articleResearchpeer-review

1 Citation (Scopus)

Abstract

There is an increasing demand on the gridforming (GFM) capability of grid-connected voltagesource converters (VSCs) under large grid disturbances, even when the current-limiting control (CLC) is triggered. This letter demonstrates that the GFM capability can be maximized by matching the angle of virtual impedance emulated by the CLC and that of the passive impedance composed by filter impedance and grid impedance. This finding offers insight for optimizing the CLC with the enhanced GFM capability. The experimental results are given to verify the theoretical findings.

Original languageEnglish
JournalIEEE Transactions on Power Electronics
Pages (from-to)1-5
Number of pages5
ISSN0885-8993
DOIs
Publication statusAccepted/In press - 2024

Bibliographical note

Publisher Copyright:
IEEE

Keywords

  • current-limiting control
  • Grid-forming
  • Impedance
  • Power quality
  • Power system dynamics
  • Power system stability
  • Stability criteria
  • Voltage
  • Voltage control
  • voltage-source converters

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