Abstract
This paper presents a new nonlinear decoupling control method of a three-phase three-wire voltage source shunt active filter. The currents injected by the active filter are controlled in the synchronous orthogonal dq frame using a decoupled feedback linearization control method. The reference currents are extracted from the sensed nonlinear load currents by applying the synchronous reference frame method. The voltage level of the DC side is regulated using an output feedback linearization control. Integral compensators are added in both current and voltage loops in order to eliminate the steady state errors due to system parameters uncertainty. Simulation results confirm the performance considered theoretically for the shunt active filter.
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