抄録
The paper presents the combination of p-q theory and instantaneous positive sequence extraction of load current and utility voltage for controlling of shunt active filters. Operation of active filter using this method compensates for reactive power, current harmonics and imbalance currents of the load in 3-phase 3-wire utility. The presented method is very easy to implement and it is possible to make use of it in harmonic polluted and/or imbalance utility voltage case, successfully. Simulation and experimental results confirm the validity of control strategy to suppress the above-mentioned power quality problems with a very fast dynamic response.
