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Revaluation of Virtual Admittance-Based Dual-Loop Voltage-Controlled Grid-Forming Control Considering Negative Aspects of Voltage Feedback Decoupling on Internal Stability

  • Kyungpook National University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper assesses the internal stability of standalone grid-forming voltage-source converters (GFM-VSCs) under virtual-admittance (VA) voltage control with proportional voltage-feedback decoupling (VFD). Traditional VA-based GFM-VSCs are limited by a narrow voltage-loop bandwidth. While VFD can extend this bandwidth, it may destabilize the voltage loop if the gain exceeds unity; stability is restored by constraining the gain below unity. A graphical tuning method identifies optimal loop-gain settings, and the analysis is validated via simulation and by experiments on a 3 kVA GFM-VSC.

Original languageEnglish
Title of host publication2025 IEEE 10th Workshop on the Electronic Grid, eGRID 2025 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331593643
DOIs
StatePublished - 2025
Event10th IEEE Workshop on the Electronic Grid, eGRID 2025 - Glasgow, United Kingdom
Duration: 30 Sep 20252 Oct 2025

Publication series

Name2025 IEEE 10th Workshop on the Electronic Grid, eGRID 2025 - Proceedings

Conference

Conference10th IEEE Workshop on the Electronic Grid, eGRID 2025
Country/TerritoryUnited Kingdom
CityGlasgow
Period30/09/252/10/25

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • cascaded voltage control
  • feedback decoupling control
  • grid-forming (GFM)
  • internal stability
  • loop-gain stability
  • virtual admittance (VA)
  • Voltage-source converters (VSCs)

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