HVDC systems are playing an increasingly significant role in energy transmission due to
their technical and economic superiority over HVAC systems for long distance transmission …

Voltage‐source converter‐high‐voltage direct current (VSC‐HVDC) systems have become
an attractive option for integrating remote and far‐from‐shore renewable energy resources …

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 …

This paper investigates the impact of powergrid strength and phase-locked loop (PLL)
parameters on small signal stability of grid-connected doubly fed induction generator (DFIG) …

The undesired nonlinear operation of phase-locked loops (PLL) is one of the main causes of
transient instability in grid-connected converters. However, the stable operating region of …

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 …

The wide bandwidth of phase-locked loop (PLL) will increase the negative real part of the
output impedance of the grid-connected inverter (GCI), thus destroying the stability of the …

Weak ac grid operation is known to challenge the stability of voltage source converters
(VSCs). This paper provides an interpretation for the cause of such instability in view of a …

Voltage source converter (VSC) based high-voltage direct current (hVDC) system is an
emerging technology in high-power applications. Previous research has shown that VSCs …