Hybrid Power Line Conditioner Based on Two Parallel Converters Topology

A new hybrid power line conditioner is proposed in this paper. It is formed by an active conditioner in parallel with a hybrid conditioner composed by an active filter in series to one or more passive filters. This topology allows the reduction of the inverters rating, constituting an effective solution in high power levels where classical power filters can not be used. The conditioner operates properly in three-phase four-wire systems reducing the harmonic distortion and/or unbalance and attaining unity displacement power factor. Experimental results are included for testing the topology and its control.