Development of a less complex single phase active harmonic filter

Abstract

Harmonic pollution has become a serious problem in recent years. Harmonic is introduced into power systems due to nonlinear loads or system components presenting non-linear behavior. An active power filter is one of the important methods of minimising the effects of the harmonic. However, active harmonic filter usually requires some complicated algorithm for implementation. Therefore, this paper presents the work on design and development of a new approach of active harmonic filter. The designed active harmonic filter is less complex compared to other conventional active harmonic filters. It works by injecting the inversion form of the harmonic into the main line, this result to a lower value of harmonic content. In other words, the harmonic component needed by the non-linear load is provided by the active filter rather than the AC source