Design of Shunt Active Power Filter with Optimal PI Controller - A Comparative Analysis

Abstract

The extreme use of power electronic devices in the power system generates harmonics that leads to power quality issues. Here in this work formulates the design, simulation and tentative investigation on a 3-phase multi-level shunt active power filter to improve power quality by reducing harmonics. In this, the performance of the filter using instantaneous power theory with PI and hysteresis current controller is explained. The parameters of the PI controller are tuned using a modified particle swarm optimization technique (MPSO). The controller is abbreviated and called as PI-MPSO controller. Optimization helps to control the dc-link voltage of the shunt APF which is of great importance and simulated by Matlab simulink. To prove the flexibility, effectiveness and superiority of the MPSO based tuning its simulation results are compared with different other artificial intelligence algorithm. Results obtained by simulation shows that the proposed approach is effective for the mitigation of harmonic currents generated by the non-linear loads with the shunt APF based MPSO tuning. The spectral performance shows that MPSO minimizes the THD below 5% matching with the IEEE-519 standard.