Robust Grid-Forming Control With Active Susceptance

Fangzhou Zhao, Xiongfei Wang, Zichao Zhou, Yin Sun, Lennart Harnefors, Tianhua Zhu

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review


This letter proposes a grid-forming control scheme that is robust against a wide range of short-circuit ratio (SCR) of the ac grid. The approach modifies traditional power synchronization control by adding an active susceptance loop, which 1) enhances system damping for high stability robustness, and 2) enables to use a standard voltage-oriented vector current control. The latter can avoid major software changes on a classical grid-following control structure. Both small-signal dynamics analysis and experimental results confirm the effectiveness of the approach from ultraweak (SCR &#x003D; 1, <italic>X</italic>&#x002F;<italic>R</italic> ratio &#x003D; 7) to stiff (SCR &#x003D; 38.5) grids.

TidsskriftIEEE Transactions on Power Electronics
Udgave nummer3
Sider (fra-til)1-5
Antal sider5
StatusUdgivet - 2022


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