Injected power control for grid-connected converter based on particle swarm optimization

Inductance–capacitance–inductance (LCL) filters are very attractive candidates for renewable energy system applications due to their high efficiency, harmonic reduction, small bulk, and improved distortion (THD). These papers take advantage of the capabilities sources inject them into network by using an inverter when it enters work at loads certain times. Therefore, is necessary control power with controllers. The proportional-integral controller (PI) used; conventional methods tuning parameters cannot give satisfactory performance instability closed-loop system. This paper presents particle swarm optimization (PSO) method controller's achieve optimum associated sufficient stability margin. mathematical models LCL filter frequency response were investigated bode-plot. proposed approach shows effective results both reduction. PI-PSO gives overshoot (1.08%), settling time (0.03 sec), rise (0.00035 sec) THD from 10.29% 1.67% compared trial error method, which (1.035%), (0.015) (0.003) 10.23% 1.575%, respectively.