Unknown Parameters Extraction and Characteristics Simulation of Photovoltaic Module using 2D-scanning and Datasheet at the Standard Test Condition

Single-diode model is found to be more effective for photovoltaic module characterization in terms of computational time and accuracy compared to two-diode or three-diode models. To analyze the output characteristics of photovoltaic cell and module using single diode model, 5-unknown parameters including photo-current, reverse saturation current of diode, diode quality factor, series resistance and parallel resistance (or shunt resistance) have to be extracted. In this paper, we construct the two-dimensional search region with orthogonal basis of series resistance and diode quality factor, and present a mathematical modeling procedure and extraction algorithm for computing the photo current and the reverse saturation current corresponding to each point in the search region. The algorithm was implemented in MATLAB environment to extract the unknown parameters of R.T.C. France silicon photovoltaic cell and STP6-120/36 silicon photovoltaic module, and compare the results with previous extraction. The output characteristics of the mono-crystal silicon photovoltaic module JT100-12M are also presented.