Passivity and Decentralized Stability Conditions for Grid-Forming Converters

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.

References in corpus (2)

• Quantitative Stability Conditions for Grid-Forming Converters With Complex Droop Control
• Saturation-Informed Current-Limiting Control for Grid-Forming Converters

Cited by in corpus (2)

• Cross-Forming Control and Fault Current Limiting for Grid-Forming Inverters
• Quantitative Stability Conditions for Grid-Forming Converters With Complex Droop Control