Design of UPQC by Optimizing PI Controller using GA and PSO for Improvement of Power Quality

This paper presents a new control design of an Unified Power Quality Conditioner (UPQC). The DC link capacitor of UPQC is controlled by using PI controller. The conventional method of obtaining the coefficients of proportional plus integral (PI) controllers for the active power filter utilizes a linear model of the PWM inverter. This paper presents a new algorithm based genetic algorithm and Particle Swam Optimization to optimize the coefficients of the PI controller. Through the simulation results, it is observed that the dynamic response of the Particle Swarm Optimization algorithm PI (PSO–PI) controller is quite satisfactory. A simulation study of the proposed topology has been carried out using MATLAB/Simulink and the results are discussed.