Active power filters for line conditioning: A critical evaluation

This paper presents a critical analysis of various topologies for power cir cuits used in power line conditioners designed to attenuate or remove distu rbances in the electric power system. By defining a series of merit figures , it becomes possible to appraise the desirable qualities shown by the tech nical and economical aspects in each configuration There is also a! descrip tion of the basic lines for designing practical equipment. Finally, experim ental results of a novel topology which reconfigurates to UPS operation in the case of a power line failure are shown to confirm the validity of the p rospective method.