| Abstract |
A 3-phase 4-wire shunt active power filter using a conventional 3-leg converter, without need of power supply at dc bus, is presented. The active filter controller considers harmonics,
reactive currents, as well as unbalance due to negative and zero sequence components at fundamental frequency. The goal is to provide balanced sinusoidal currents to the source, even under unbalanced voltage conditions. Some simulation and experimental results are presented to validate the control strategy. |
