A Comparative Study and Implementation of Controller for UPQC in Single-Phase to Three-Phase System

Abstract—This paper presents comparative study and implementation of Unified Power Quality Conditioner (UPQC) to eliminate harmonics and reactive power compensation in a single-phase to threephase converter system. The proposed configuration solves typical problems encountered in remote rural area applications, where only a single-phase supply is available and there is a demand for three-phase supply. The universal active power filter is a power line conditioner. It consists of a combination of series type and shunt type active power filter topologies. The series active power filters are used to minimize voltage harmonic distortion and sag/swell compensation of the input voltage. The shunt active filters used are to minimize current harmonics and compensate reactive power of the system, resulting in effective power factor improvement. In this scheme, a three phase line interactive uninterruptible power supply system also is used. A suitable control approach is used to minimize the voltage and current harmonics simultaneously. The simulation model of Universal Active Power Filter, for single phase to three phase system was developed using MATLAB -simulink with PI and Neural Network controller. The results in terms of THD are compared for PI and Neural Network controller and the prototype model is developed using dsPIC30F4011 controller, for the one which provides better results in comparison. The effectiveness of the proposed system is validated from the experimental results. Keywords—Unified Power Quality Conditioner (UPQC), Total harmonic distortion (THD), reactive power compensation, PI controller, Neural Networks controller.