IMPROVEMENT OF POWER QUALITY USING FUZZY CONTROLLER WITH TCR BASED ACTIVE POWER FILTER

This paper proposes a new control scheme to improve the power quality of an electrical power system by use of TCR based Shunt Active Power Filter. In this paper, we used a FACTS controller i.e. which is shunt controller. The TCR and tuned passive filter form a shunt passive filter (SPF).The SPF is used to compensate reactive power. The small-rating active power filter is used to suppress resonance occurred between the line inductances and shunt passive filter and to improve the filtering characteristics of shunt passive filter. A proportional? integral controller was used, for generating pulses to control the TCR. This paper introduces a new concept i.e. Fuzzy Logic Controller for controlling both TCR and SHAPF. The proposed Fuzzy logic controller (FLC) gives better dynamic and static performances compared to PI controller.