This paper presents an overview of the synchronization stability of converter-based
resources under a wide range of grid conditions. The general grid-synchronization …

Grid-connected converters exposed to weak grid conditions and severe fault events are at
risk of losing synchronism with the external grid and neighboring converters. This …

The weak grids may be unstable due to the negative resistance behavior of the grid-
connected inverter (GCI) caused by the synchronization unit with the phase-locked loop …

The phase-locked loop (PLL)-caused couplings on the grid-connected converter (GCC) are
strengthened by increasing its bandwidth and then incur synchronization instability. This …

The modern power system is becoming more complicated due to the ever increasing
penetration of power electronics, which is referred to as a power-electronics-dominated …

Conventional vector current control scheme has been widely used in grid-connected inverter
systems. However, it suffers from severe power limitation issues under weak grids. This …

Due to the advantages of superior harmonics attenuation ability and reduced size, the LCL
filter has been widely adopted to interface between the inverter and the grid for improving …

The continuous increasing share of power-converter-based renewable energies weakens
the power system inertia. The lack of inertia becomes a main challenge to small-scale …

When LCL-type converter is attached to weak grid, its current control and phase-locked loop
(PLL) will interact with each other, via the point of common coupling voltage. Unfortunately …

For a hybrid ac/dc microgrid (MG), bidirectional interlinking converters (BICs) enable flexible
power interactions between ac and dc subgrids. In each subgrid, power sharing among …