Power active filter control based on a resonant disturbance observer

Active filters are power electronics devices used to eliminate harmonics from the distribution network. This article presents an active disturbance rejection control scheme for active filters. The controller is based on a linear disturbance observer combined with a disturbance rejection scheme. The parameter tuning is based on a combined pole placement and an optimal estimation based on Kalman–Bucy filter. Proposed scheme is validated through simulation and experimental work in an active filter