PSO Optimised FOPID Controller based HSAPF for PQ Enrichment

Abstract

A Hybrid Shunt Active Power Filter (HSAPF) is designed and developed in this article for Power Quality (PQ) enrichment in a distribution system. The controller used for extracting the peak of reference current is, Fractional Order Proportional Integral and Derivative (FOPID) controller and the controller gains are optimised by Particle Swarm Optimization (PSO) technique. The cause of selection of HSAPF is that, Active Filter (AF) is costly for high rating and Passive Filter (PF) is massive for more harmonic order compensation. Therefore a hybrid configuration AF and PF is taken. The reference current estimation process is of indirect control type, which requires only the source side parameter and does not require load (current) side parameter. The anticipated system is simulated in MATLAB/Simulink and verified in transient, steady state situation. During simulation various performance parameter are extracted such as: Power Factor at Input (PFI), Percentage Total Harmonic Distortion of Source Current (% THDSC) and Percentage Overshoot (%OS) of DC link voltage and a comparative study is done with the anticipated controller (FOPID) with the conventional PID controller.