Resonant poles of LCL filters may challenge the entire system stability especially in digital-
controlled pulse width modulation (PWM) inverters. In order to tackle the resonance issues …

The use of LCL filters is a well-accepted solution to attenuate the harmonics created by the
pulsewidth modulation. However, inherently LCL filters have a resonance region where the …

Active damping is a common way to stabilize the current control of LCL-filtered converters. In
this paper, the stable region of-180° phase crossing is first identified within a predefined …

Grid-connected converters employ LCL-filters, instead of simple inductors, because they
allow lower inductances while reducing cost and size. Active damping, without dissipative …

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 …

An LCL-type filter is widely used in the grid-connected inverter. However, with only injected
grid current control, the current harmonics and low bandwidth caused by the resonance …

Grid-connected converters (GcCs) employ LCL filters instead of simple L filters in order to
meet new grid codes and their on-going changes in the near future. Active damping …

This paper investigates the inherent damping characteristic of LCL-filters for three-phase
grid-connected voltage source inverters. Specifically, it is found that when the converter-side …

In order to minimize the effect of the grid harmonic voltages, harmonic compensation is
usually adopted for a grid-tied inverter. However, a large variation of the grid inductance …

Due to the effect of the computation and modulation delays on the capacitor-current-
feedback active damping, the digitally controlled LCL-filtered inverter tends to be unstable …