Development of photovoltaic (PV) cell/module/array and non-uniform irradiance effect based on two-diode model by using PSPICE simulator

Need of alternate electrical energy resource and compatibility with grid connection has revived the interest in PV system. To study the interaction with converters an accurate modeling approach is required which should be able to define precisely the electrical behavior with changes in the surrounding temperature and insolation level. This paper proposes a PSPICE based model utilizing two diode based cell contributing higher accuracy at low irradiance level and allowing better analysis of PV system performance. Also to analyze partial shading effect a model is put forward with the utilization of two diode based PV cell. Temperature and insolation levels are kept as variables to plot the VI and PV characteristics. In order to study the interfacing with MPPT algorithms and converters PV array and module simulation are performed. PSPISE simulator is a platform to deal with non-linear devices such as diodes and transistors availed with a number of parameter to achieve numerical convergence.