Robust Stability Analysis and Design of Parallel Grid-forming Converters in Islanded Microgrid

Xin Jin; Zhipeng Zhou; Ningyi Dai

doi:10.35833/MPCE.2025.000833

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Robust Stability Analysis and Design of Parallel Grid-forming Converters in Islanded Microgrid

Original Paper | 更新时间：2026-09-28

- Robust Stability Analysis and Design of Parallel Grid-forming Converters in Islanded Microgrid
- Journal of Modern Power Systems and Clean Energy Vol. 14, Issue 5, Pages: 1672-1683(2026)
- 作者机构：
  
  State Key Laboratory of Internet of Things for Smart City and the Department of Electrical and Computer Engineering, University of Macau, Macao, China
- 作者简介：
  
  Xin Jin received the B.S. degree in automation from Northeastern University, Shenyang, China, in 2017, and the M.S. degree in electrical engineering from Chongqing University, Chongqing, China, in 2020. He is currently working toward the Ph.D. degree in electrical and computer engineering with University of Macau, Macao, China. In 2025, he was a Visiting Researcher with Auckland University of Technology, Auckland, New Zealand. His research interests include modeling, analysis, and design of power electronic system. Email:yc27997@um.edu.mo
  Zhipeng Zhou received the B.S. degree in electrical engineering and automation from Jilin University, Changchun, China, in 2019, and the M.S. degree in electrical and computer engineering from University of Macau, Macao, China, in 2022. He is currently working toward the Ph.D. degree in electrical and computer engineering with University of Macau, Macao, China. His research interests include power electronics, modular multilevel converter, harmonics suppression, and optimization algorithm. Email:yc37936@um.edu.mo
  Ningyi Dai received the B.Sc. degree in electrical engineering from Southeast University, Nanjing, China, in 2001, and the M.Sc. and Ph.D. degrees in electrical and electronics engineering from University of Macau, Macao, China, in 2004 and 2007, respectively. She is currently an Associate Professor in the Department of Electrical and Computer Engineering and the State Key Laboratory of Internet of Things for Smart City, University of Macau. She is also the Assistant Dean of the Faculty of Science and Technology, University of Macau. Her research interests include application of power electronics in power system, and design and control of multi-level power converter. Email:nydai@um.edu.mo
- 基金信息：
- DOI：10.35833/MPCE.2025.000833
  CLC：
- Received：05 September 2025，
  
  Revised：2025-12-04，
  
  Accepted：16 March 2026，
  
  Online First：01 April 2026，
  
  Published：15 September 2026
- 稿件说明：
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Jin Xin,Zhou Zhipeng,Dai Ningyi.Robust Stability Analysis and Design of Parallel Grid-forming Converters in Islanded Microgrid[J].Journal of Modern Power Systems and Clean Energy,2026,14(05):1672-1683.
DOI：

Jin Xin,Zhou Zhipeng,Dai Ningyi.Robust Stability Analysis and Design of Parallel Grid-forming Converters in Islanded Microgrid[J].Journal of Modern Power Systems and Clean Energy,2026,14(05):1672-1683. DOI： 10.35833/MPCE.2025.000833.

摘要

Abstract

The stability of microgrid (MG) is affected by the interaction between parallel inverter-based resources (IBRs)

especially when grid-forming (GFM) control is implemented in islanded MG to provide voltage support. In this paper

the robust stability analysis using structured singular value (SSV) approach and design of parallel GFM converters in islanded MG by structured

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2.03200006

2.96333337

synthesis are presented

catering to its multi-input multi-output (MIMO) nature. Specifically

a modular state-space model of parallel GFM converters in islanded MG is derived with component connection method (CCM). Model uncertainty is captured against the nominal model

delivering a certain degree of robustness for stability analysis

in the face of potential parametric uncertainty and resonance effects induced by parallel GFM converters. Moreover

the effects of system parameters on robust stability are comprehensively analyzed

and a robust design is proposed for virtual impedance (VI) tuning. The accuracy of modelling and robust stability analysis

as well as the effectiveness of the robust design is validated in MATLAB/Simulink/PLECS and real-time digital simulator (RTDS).

关键词

Keywords

references

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