PERFORMANCE IMPROVEMENT FOR A SINGLE-PHASE SHUNT ACTIVE POWER FILTER

Active power filters represent a modern solution for improving electrical power transmission efficiency by eliminating the polluting influence of nonlinear loads on the supply grid. This paper analyses and implements a single-phase shunt active power filter with sliding mode control. The proposed control scheme aims to compensate the effect of the non-sinusoidal supply voltage on the filtered line current and to obtain a better dynamic behavior at low total harmonic distortions of the line current. Experimental results are presented, that confirm the previous theoretical analysis.