Predictive Control Applied to Three-Phase Four-Wire Shunt Active Power Filters: An Innovative Approach

This paper presents a three-phase Four-Wire Shunt Active Power Filter (FW-SAPF) using predictive current and DC-Link voltage control. The controller is aimed to mitigate harmonic distortions, improve power factor, and balance the grid current at the point of connection. To achieve these objectives, the Finite Set Model Predictive Control (FS-MPC) strategy is employed, combined with knowledge from the Three-Dimensional Space Vector Pulse Width Modulation (3D-SVPWM) technique. This integration allows for a reduced number of vectors tested in each sampling time, without compromising the performance of FS-MPC. Simulations and experimental results are presented to validate the effectiveness of the proposed control strategy.