Robust Grid-Forming Control With Active Susceptance

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

doi:10.1109/TPEL.2022.3223511

Robust Grid-Forming Control With Active Susceptance

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

Research output: Contribution to journal › Letter › peer-review

10 Citations (Scopus)

Abstract

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 the traditional power synchronization control by adding an active susceptance loop, which enhances system damping for high stability robustness and 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 = 1, X/R ratio = 7) to stiff (SCR = 38.5) grids.

Original language	English
Journal	IEEE Transactions on Power Electronics
Volume	38
Issue number	3
Pages (from-to)	2872-2877
Number of pages	6
ISSN	0885-8993
DOIs	https://doi.org/10.1109/TPEL.2022.3223511
Publication status	Published - 1 Mar 2023

Keywords

Automatic voltage control
Damping
Gain
Grid-forming control
Integrated circuit modeling
Phase locked loops
Power system stability
Robustness
robustness
stability
stiff grid
susceptance
Grid-forming (GFM) control

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abstract = "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 the traditional power synchronization control by adding an active susceptance loop, which enhances system damping for high stability robustness and 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 = 1, X/R ratio = 7) to stiff (SCR = 38.5) grids.",

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AU - Zhao, Fangzhou

AU - Wang, Xiongfei

AU - Zhou, Zichao

AU - Sun, Yin

AU - Harnefors, Lennart

AU - Zhu, Tianhua

PY - 2023/3/1

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N2 - 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 the traditional power synchronization control by adding an active susceptance loop, which enhances system damping for high stability robustness and 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 = 1, X/R ratio = 7) to stiff (SCR = 38.5) grids.

AB - 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 the traditional power synchronization control by adding an active susceptance loop, which enhances system damping for high stability robustness and 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 = 1, X/R ratio = 7) to stiff (SCR = 38.5) grids.

KW - Automatic voltage control

KW - Damping

KW - Gain

KW - Grid-forming control

KW - Integrated circuit modeling

KW - Phase locked loops

KW - Power system stability

KW - Robustness

KW - robustness

KW - stability

KW - stiff grid

KW - susceptance

KW - Grid-forming (GFM) control

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EP - 2877

JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

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ER -

Robust Grid-Forming Control With Active Susceptance

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