Three-phase For-wire Shunt Active Filter with Unbalanced Loads

The electrical power quality at low voltage alternative networks became a serious concern because of the increased use of non- linear loads and pollutants. This work is to improve the quality of electric current in such networks. Four-Wire Shunt Active Filter is studied; deferent loads (balanced and unbalanced) are discussed. We propose to identify harmonic and reactive currents at the base of Self-Tuning-Filters, which proved very good filtering performance, either in transient or steady state.The simulations demonstrate the importance of this work in harmonic filtering and reactive power compensation.