A power distribution grid exhibits the characteristics of a weak grid owing to the existence of
scattered high-power distributed power-generation devices. The grid impedance affects the …

Phase-locked loop (PLL) is commonly used for three-phase grid-connected inverters to
obtain the information of grid synchronization, and PLL dynamics are the key factors for …

The grid-connected inverter is the vital energy conversion device in renewable energy
power generation. With the increasing installed capacity of renewable energy, the grid …

The conventional power-current controlled grid-tied inverter suffers from interactive stability
issues, including harmonic oscillations when connected to a weak ac grid, which limits the …

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 …

The current-controlled grid-connected inverter with LCL filter is widely used in the distributed
generation system (DGS), due to its fast dynamic response and better power quality …

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 …

An active grid impedance cancelator using the concept of series active filter to suppress the
effect of the grid disturbance and stabilize the single-phase grid-connected inverters with an …

This paper analyzes the small-signal impedance of three-phase grid-tied inverters with
feedback control and phase-locked loop (PLL) in the synchronous reference (dq) frame. The …

For a grid-connected inverter requiring the ac voltage magnitude and the active power
control, both vector control and power synchronization control can be applied. The stability …