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arXiv · 2310.09935

Passivity and Decentralized Stability Conditions for Grid-Forming Converters

Xiuqiang He·Florian Dörfler
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Abstract

We prove that the popular grid-forming control, i.e., dispatchable virtual oscillator control (dVOC), also termed complex droop control, exhibits output-feedback passivity in its large-signal model, featuring an explicit and physically meaningful passivity index. Using this passivity property, we derive decentralized stability conditions for the transient stability of dVOC in multi-converter grid-connected systems, beyond prior small-signal stability results. The decentralized conditions are of practical significance, particularly for ensuring the transient stability of renewable power plants under grid disturbances.

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Xiuqiang He, Florian Dörfler. 2023-10-15. Passivity and Decentralized Stability Conditions for Grid-Forming Converters. https://doi.org/10.1109/tpwrs.2024.3360707

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