IMPROVING THE PERFORMANCE OF SOLAR PV SYSTEM WITH SEPIC

In this paper a PSO algorithm with SEPI converter is presented for maximum power point tracking (MPPT) with PI controller to improve the performance of PV system. SEPI converter is proposed as interface between load and PV module array as DC - DC converter. Whichis more advantageous over boost converter for step up and step down operations. The 1 - phase inverter is proposed in order to convert the power for AC 1 - phase applications. The PSO algorithm and SEPIC converter proposed are main key factors for high ef ficiency output at foul weather conditions. The MATLAB/SIMULINK power system tool box will be used to stimulate the proposed system.