Multivariable Stability Analysis of Converter-Based Power Systems via Complex-Frequency Synchronization

The core message of this article is to study the phase-amplitude multivariable stability issue in converter-based power systems from the perspective of complex-frequency synchronization. The authors propose the notion of complex-frequency synchronization, reveal the equivalence between the linear part of dispatchable virtual oscillator control (dVOC) and complex-power-frequency droop control, and provide novel insights into stability analysis methods and stability criteria.