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This letter presents a grid-forming control with adaptive grid-synchronization capability for voltage source converters (VSCs). The proposed control has both phase-locked loop (PLL) and power synchronization loop (PSL), which makes it exhibit hybrid synchronization features. In addition, the VSC's synchronization performance can be dynamically optimized by adaptively adjusting the PLL-PSL weighting coefficient. Theoretical and simulation analyses are performed to verify the effectiveness of the proposed control.
Xiao et al. (Mon,) studied this question.