Fuzzy Hysteresis Controller Based Unified Power Quality Conditioner for Voltage Fluctuations and Harmonic Isolation

Abstract

Power quality problem makes the consumer un satisfy.  FACTS devices such as UPQC are such devices to avoid power quality problems. This paper proposed an efficient hysteresis controller and fuzzy controller for unified power quality conditioner. In this harmonics and voltage fluctuations were dealed by UPQC with hysteresis control strategy. The performance of the control strategy applied unified power quality conditioner on distribution system checked with and without UPQC. And the performances of these two controllers of UPQC are compared. This strategy makes the industries to get pure power and to avoid the disturbances from polluted distribution system. The proposed dynamic model was developed in MATLAB/SIMULINK.

Keywords: power quality, voltage fluctuations, harmonics, hysteresis controller, fuzzy controller.