Stability Analysis of Shunt Active Power Filter with Predictive Closed-Loop Control of Supply Current

This paper presents a shunt active power filter connected to the grid via an LCL coupling circuit with implemented closed-loop control. The proposed control system allows selective harmonic currents compensation up 50th utilization of model-based predictive current controller. As is fully predictive, it provides high effectiveness reduction, which proved by waveforms achieved in performed tests. On other hand, prone loss stability. Therefore, focused on stability analysis discussed additional outer loop supply this current. conducted encompasses assessment as function parameter identification accuracy, whose values are controller, well parameters such sampling frequency and proportional-integral (PI) controller coefficients. obtained results show that ranges accuracy for remains stable relatively wide. However, most effective distortion identified correctly, greatest impact quality has value L1 inductance.