Novel Type-2 SOGI PLL and Cuckoo search optimization based adaptive controllers for performance improvement of UPQC for power quality improvement

Abstract

Power quality disturbances based on current and voltages are generated due to various factors in the power distribution network. As the voltage and current power quality issues are equally carries the major value for compensation, therefore unified power quality conditioner is responsible for compensation of these issues. In this research paper, Novel Type-2 based second order generalized integrator phase locked loop has been implemented in place of conventional second order generalized integrator phase locked loop for accurate acquisition of grid signal for maintaining the synchronization in the controller. An improved instantaneous reactive power controller based on Cuckoo Search optimization has been introduced in this research work to enhance the efficiency of the unified power quality conditioner performance. The effectiveness of the controller is verified by MATLAB/Simulink environment by analyzing the performance under various dynamic environmental conditions. The system performance has been also verified by laboratory experimental prototype to validate the controller efficiency in real time hardware environment. It is clearly observed that the proposed controller for unified power quality conditioner holds the capability to mitigate the current and voltage-based power quality disturbances according to the IEEE standards.