Extracting maximum power from photo-voltaic power generator with unlike PWM pulses

Abstract

Maximization of power, which depends on solar irradiation and temperature conditions, from a photo voltaic (PV) generator is of special interest as the efficiency of the PV module is very low. A maximum power tracker is used for extracting the maximum power from the generator. To be effective with cellular converter architecture, however, a scheme must be able to accommodate a varying number of cells and maintain operation under any climate conditions. Three types of PWM pulses (synchronized pulses, independent pulses, and interleaved pulses), applied to switches, to extract maximum power from PV generator are employed. Quantitative performance comparisons are being presented among synchronized pulses, independent pulses, and interleaved pulses of the converter cells. Simulation is done in MATLAB simulink environment.