Feedback linearization control technique applied to a three phase shunt active power filter

In this paper, a non-linear control strategy applied to a three-phase shunt active power filter is developed and tested. The non-linear modeling of the filter is elaborated using the principle of average power balance between the ac source and the compensator power, wiring and semiconductor losses. The controller design is based on a feedback linearization technique of the non-linear model of the three-phase shunt active power filter (APF). Both steady state and transient behavior of the control strategy are tested. The switching signal patterns are generated using indirect current control approach. The system is simulated using both Simulink and power system blocksets of Matlab. The diverse experiments highlight the effectiveness of the proposed control strategy in terms of the THD reduction and both current harmonic and reactive power compensation.