The integration of renewable energy sources (RESs) is a key objective for energy sector
decision-makers worldwide, aiming to establish renewable-rich future power grids …

Synchronization is the key part to ensure the high performance of grid-connected systems.
Phase-locked loop (PLL) is one of the most popular synchronizations due to its simple …

Grid-connected converters (GCCs) are used extensively for the integration of DC power
sources with AC power sources. However, since it is a complex topic, there are many …

It tends to cause system oscillation when the inverter with a phase-locked loop based on
proportional integral controller (PI-PLL) is connected to the weak grid. To improve the …

This paper analyzes and compares the control loops of the grid-following and the grid-
forming voltage source converters connected to the power grid. Eigenvalue trajectories are …

The interfacing of the vector-controlled voltage-source converters (VSCs) into weak grid
(WG) systems can induce severe instabilities. This is attributed to interactions between the …

Phase-locked loop (PLL) and grid impedance easily negatively affect the stability of the grid-
connected inverter system and even cause the system oscillation. To suppress this …

The proportional-integral multi-resonance repetitive controller (PIMR-RC) can track the
reference current signal of the grid-connected inverter without static error, suppress low …

Doubly-fed induction generator (DFIG) wind turbines connected to capacitive series-
compensated transmission lines are prone to exhibit oscillatory behavior. The phenomena is …

Direct power control (DPC) is widely used in grid-connected inverters. First, considering the
effects of phase-locked loop (PLL), voltage outer loop, power inner loop, control delay, and …