This paper proposes a step-by-step procedure for designing the LCL filter of a front-end
three-phase active rectifier. The primary goal is to reduce the switching frequency ripple at a …

Three-phase active rectifiers guarantee sinusoidal input currents and unity power factor at
the price of a high switching frequency ripple. To adopt an LCL-filter, instead of an L-filter …

This paper presents a discrete-time adaptive current controller for grid-connected pulse
width modulation voltage source converters with LCL filter. The main attribute of the …

This paper presents five synchronization algorithms that are commonly used in grid-
connected renewable systems. The algorithm structures are studied and their corresponding …

The presence of distributed resources (DR) and the subject of distributed generation (DG)
are rapidly growing in modern distribution networks. Many of these resources use …

The character of modern power systems is changing rapidly and inverters are taking over a
considerable part of the energy generation. A future purely inverter-based grid could be a …

Grid-connected voltage source converters (VSCs) are the heart of many applications with
power quality concerns due to their reactive power controllability. However, the major …

The objective of this paper is to analyse the influence of a non-ideal grid over hysteresis
controllers of converters connected to the grid through both L and LCL filters. The paper will …

In a distributed generation (DG) system, several renewable agents are connected to the low-
voltage 3-phase utility grid through an inverter which is used as power condition and must …

Highlights•An overview of grid-connected renewable systems is presented.•Two current-
control strategies are analyzed.•A model of a grid-connected photovoltaic system is used.•A …