基于D轴电流下垂控制的构网型变换器低电压穿越性能提升研究

Robust low-voltage ride-through capability is a critical requirement for grid-forming (GFM) converters. While virtual impedance is a promising method to prevent overcurrent during faults, it does not fully mitigate the continuous divergence of the power angle under severe voltage sags. This deficiency results in transient instability and slow postfault recovery. To address these issues, this artic...