Analytical Behaviour of BPS150-36 Polycrystalline Modules Electrical Parameters with Ambient Temperature Under Standard Conditions Using Servant Model

Abstract

(PV)-cells/modules demonstrated low performance in hot-humid climates because elevated ambient temperature conditions significantly influence their performance. We investigated analytically the behaviour of BPS150-36 polycrystalline silicon (PV)-modules electrical parameters with ambient temperature under standard irradiation conditions (STC), using Servant model. Matlab and r.getdata have been used for the numerical simulations. Results obtained show that (JPh) increases exponentially from 7.67% to 65.87% with temperature. (RS) increases linearly by 7.6% and 9.18% while (VOC) decreases from 19.4 % to 17.6% and (RSh) decreases approximately by 12.6% and 4.8%. The obtained power output (P) losses had been 82.31 % and 31.56%, and the overall linear losses in efficiency (η) had been approximately 27.84% and 5.02 %, while (JS) increases exponentially from 3.87% to 15.75%. The increase in (JPh) with temperature can be attributed to the increased in light absorption owing to a decrease in the bandgap of silicon. The decrease in (η) with temperature is mainly controlled by the decrease in (VOC) and fill factor (FF) with T. Power output loss is strongly attributed to the decrease of the fill factor (FF) due to an increase in series resistance (RS) and therefore caused by the (JSC) degradation.