STUDY OF APPLICATION OF ACTIVE LC FILTER FOR DETECTION AND REDUCTION OF HARMONICS IN POWER SYSTEM

Taking into account the increased rate of nonlinear loads in power systems, recognition and extraction of harmonics and noise seems necessary. The duty of active filter is to identify these non sinusoid currents and take action to cancel them. In this paper, adaptive method is examined and it is observed that adaptive filter might develop appropriate performance in various conditions. Generally speaking, adaptive filter is defined as a filter that its specifications might be changed to achieve to a specific goal and have this change or adaptation automatically and without the need for any intervention. Among the features of this filter, one might refer to its simplicity and powerful structure.