Abstract
This study investigate different robust maximum power point tracker (MPPT) schemes applied to improve energy conversion efficiency of photovoltaic system based on super twisting sliding mode control (second order). To do this, in first step the two classical control techniques (Perturb and Observe ‘P&O’, Incremental Conductance ‘INC’) were presented. In second step the robust sliding mode controller ‘SMC’, and Second order sliding mode controller ‘SOSMC’ were proposed. In final step a Comparative study of various schemes (MPPT) was done. The main goal of the suggested MPPT algorithm is to achieve an optimum operation without the need of atmospheric conditions measurements and to enhance the efficiency of the PV power system. The validation of the comparative study is shown by MATLAB/SIMULINK simulation for the same Photovoltaic power system.
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