Power generated by a photovoltaic (PV) module depends upon its materials, manufacturing methods, operational conditions as well as the different environmental factors. The performance of PV modules under different operational conditions must be determined before installation. This can be achieved either through testing using hardware simulators, or by development of prediction models which are low cost, robust and accurate. This paper details the development of hybrid single and double diode Rp models for multi-crystalline silicon PV modules in SimscapeTM Simulink. The hybrid model is a combination of mathematical equations and circuit modelling, providing a fast and efficient means of analysing the PV module. The model allows to alteration of irradiance and surface temperature of an individual cell within a module, making it possible to analyse the partial shading effect on a cell level. A case study is also presented in which a single string is shaded with two irradiance levels. This shading reduces the maximum power generated by 8.07% for single cell shading to 10.94% for full string shading as compared to no shading condition. Thus, percent drop in power for a single cell shading is more significant than for the remaining 9 cells in string. Therefore, the least shaded cell controls the output power of the module.

Index Terms- Hybrid PV Model, PV Module Modelling, Partial Shading, Simulink SimscapeTM, MATLAB