Abstract
For any environmental condition, obtaining the maximum power output of photovoltaic power system in real time operation is very crucial. The point of maximum power is the desired operating point for a PV array to obtain maximum efficiency. Focusing on the parasitic power consuming effect of resistance, we dedicated our effort on determining a simple method to determine the dynamic resistance of PV modules from the illuminated current – voltage characteristics curve. In this experiment, illuminated and dark characteristics of a 210 Wp HIT module at 22-25°C along with the different ranges of irradiance and temperature has been measured. The ability to determine the dynamic resistance with a combination of finite series and shunt connected resistance has been developed in this method. Comparison between the series resistance and shunt resistance determined from the single and double IV curve are also reported.
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