3 Phase 4 Wire Hybrid Active Power Filter

摘要

The present invention is a device for reducing harmonics caused by single-phase and three-phase loads used in three-phase four-wire system. The current of harmonic current of neutral wire and fundamental wave component due to phase imbalance is more than that of conventional active filter. The present invention relates to a hybrid type active filter in which a passive filter and an active filter are combined to effectively reduce the filter.