Particle Swarm Optimization For Power  Quality Improvement Based on Shunt  Active Power Filter

A. Balakrishna; B. Mahesh Babu; Dr. L. Ravi Srinivas; Dr. S. S.Tulasi Ram

Volume : III, Issue : I, January - 2014

Particle Swarm Optimization For Power Quality Improvement Based on Shunt Active Power Filter

A. Balakrishna, B. Mahesh Babu, Dr. L. Ravi Srinivas, Dr. S. S. Tulasi Ram

Abstract :

In a three phase distribution system nonlinear load causes harmonics and reactive power problems, for compensating harmonics and reactive power the shunt active power filter (SAPF) controlled by (PQ-PLL) synchronization with optimized (PI-PSO) is used. The instantaneous Power Theory-Phase locked Loop (PQ_PLL) Synchronization determines reference current signals of the SAPF, the SAPF circuit is operated by the Particle Swarm Optimization (PI-PSO). This (PI-PSO) optimization is capable of controlling DC side capacitor voltage and estimating reference current. Hysteresis Current Controller (HCC) is used to generate switching signals for the VSI. The Shunt active power filter controlled by PI-PSO gives better results for harmonic minimization. The proposed shunt APF maintains the THD well within IEEE-519 standards. This proposed technique is implemented in MATLAB 7.9 / Simulink software.