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

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 …

Power converters may lose synchronization with the remaining network when integrated in a
weak power grid. Such an instability phenomenon [known as grid-synchronization instability …

Impedance is an intuitive and effective way for dynamical representation of power
electronics devices [eg, voltage source converters (VSCs)]. One of its strengths toward …

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 …

This paper proposes a symmetrical phase-locked loop (PLL) that can eliminate the
frequency-coupling terms caused by the asymmetric dynamics of conventional PLLs. In the …

The phase-locked loop (PLL) will have a negative impact on the stability of doubly fed
induction generators (DFIG) system under inductive weak grid. Some PLL-less methods …

The modern power system features high penetration of power converters due to the
development of renewables, HVDC, etc. Currently, the controller design and parameter …

Small-signal analysis of power electronic converters and systems is often carried out by
impedance-based methods. At the core of these methods lies the impedance modeling …

This study presents a harmonic transfer function (HTF) based single-input single-output
(SISO) impedance modeling method. The method converts an HTF from phase domain to …