a review of passive power filters for grid-connected pv inverters

Increasing the number of nonlinear loads in the distribution networks and the presence of inverters near the consumers lead to poor power quality in the power system. to improve the power quality, it is required to use passive filters in the output of inverters. recently, various topologies of novel passive power filters have been proposed to enhance their respective attenuation ability with relatively small filter components, i.e., filter inductors and capacitors. in this study, various passive filter topologies applied to interface inverters with the utility grid are reviewed and assessed in terms of attenuation characteristics, cost, and size.