This article takes a deep insight into the passivity-based design of LCL-filtered inverter with
grid current control and capacitor current active damping. It reveals that although an optimal …

Stable operation of LCL filtered grid-connected inverters can be achieved using active
damping. However, the stability can be threatened by non-ideal conditions such as delay in …

The phase-locked loop (PLL)-based grid-following inverters have been widely used as the
interface between renewable energy resources (eg, wind and solar power) and the utility …

Nowadays, various sliding-mode control (SMC) methods have been successfully applied to
the digitally controlled grid-connected inverter (GCI) with an LCL filter. However, how to …

This paper presents a design method based on the extended harmonic domain modeling for
L and LCL passive filters of active-front-end PWM two-level voltage source converters for …

Proportional-resonant controllers are largely used for grid-connected converters with LCL
filters to ensure sinusoidal reference tracking and harmonic disturbance rejection. However …

Owing to the strong robustness against system parameter changes and external
perturbations, the passivity-based control (PBC) has been widely adopted in grid-tied …

A shunt active power filter (SAPF) is coupled with load admittance in weak grid conditions,
which poses a challenge to stability analysis. In this article, the admittance model of the …

This paper provides a new design procedure for robust state feedback current controllers
suitable for grid-tied inverters under wide grid impedance ranges. The proposed procedure …

Digital control delay is studied as one of the leading factors causing instability in grid-tied
voltage source inverter (VSI) systems. However, how this delay affects the small-signal …