This paper investigates the design and analysis of a novel grid-forming (GFM) control method for grid-connected converters (GCCs). The core novelty lies in a virtual flux observer-based synchronization and load angle control method. The terminal voltage of the converter is directly regulated to provide voltage-source behavior. The control parameters are designed for decoupling and pole placement. The proposed method exhibits strong robustness in stability and dynamical performance across varying and uncertain grid strengths. The robust control performance of the proposed method is first demonstrated by small-signal analysis, then validated by experiments on a 20 kVA power conversion system.
@article{arxiv.2601.16418,
title = {Robust Grid-Forming Control Based on Virtual Flux Observer},
author = {Xueqing Gao and Jun Zhang and Tao Li and Mingming Zhang},
journal= {arXiv preprint arXiv:2601.16418},
year = {2026}
}
Comments
This is a six-page conference paper to be included in the proceedings of the 2026 IEEE Applied Power Electronics Conference and Exposition (APEC 2026)