Journals Proceedings

Abstract

In this paper, solar radiation simulation using clearness index kt, hour of day ωs and day of year n is studied. Daily distributions of solar radiation are presented for various clearness indexes kt. additionally, taking into the studies about solar radiation, a photovoltaic array system and a DC/DC buck – boost converter are studied. Simulation of the whole system is presented focusing on DC/DC converter’s control strategy so that the system operates in maximum power point (MPP) and converter’s output voltage remains constant. Incremental conductance algorithm is used for maximum power point tracker (MPPT) implementation. A simplest method for controlling duty cycle D and photovoltaic array’s voltage by using a new variable d = D / (1-d) is proposed. Simulation results are shown and analyzed