An Advanced Synchronous Reference Frame Control on Reduced Switch Unified Power Quality Conditioner for Harmonics Reduction for Distribution Load

Abstract

This paper is presented a reduced switch count - parallel and series converter is presented in Unified Power Quality Conditioner (UPQC) system. The topology of UPQC is designed with Four-switch in three phase three wire system with series and parallel injection converter connected back to back converter through DC-Link capacitor. Reduced switch count is introduced on both parallel and series converter i.e three phase series and parallel injection converter designed under three phase circuit having 4 switches for two legs of converter and third leg is replaced by capacitor elements. Reduced switch count topology is introduced in the reason for minimizing cost, maintenance, harmonics problems and so improving efficiency of system. The nature of switch replacement by capacitor is an important task to balancing of three phase of each phase voltages. So an ANFIS based synchronous reference frame controller is introduced to balancing of both reduced switch converter and also used to maintained power quality and harmonics minimization. Present controller of ANFIS is combined application of Fuzzy logic and neural network controller so this is used to extract harmonics, disturbances and controlled accurately