Application of three-level shunt active power filter for the compensation of reactive energy and current harmonics

In recent decades, the increasing use of equipment based on power electronics converter has been an important contributor to the degradation of power quality in the electrical network, especially the low-voltage network. The shunt active power filter can be a curative solution against different disturbances. In this paper we present the control of a shunt active filter based on three-level neutral point clamped voltage inverter controlled by the reference current identification method "instantaneous active and reactive power" and we will study the performance of this method for the compensation of the reactive energy and the current harmonics in a balanced three-phase non-polluting electrical network.