Sustainable development of solar power through the investigation of Partial Shading effect of solar module in terms of experimental set up and MATLAB simulation

Abstract

The analysis on partial shading for a PV module is presented in this paper as a critical criterion for sustainable development in practical life. Nowadays it is an important challenge for the sustainable development in the energy sector where solar panel can take a vital role in this regard. A partial shading experiment on a PV module will be shown in this investigation, as well as comparisons of IV properties and PV panel efficiency with and without shade. The many causes of partial shade will be examined and there will be corrective ways to avoid partial shading. This project is developed into two stages namely, hardware and software implementation. For hardware implementation two 20W polycrystalline solar panel and different types of variable loads were used. In addition to this, the impact of partial shading of single and two different solar PV configurations are investigated: 1) Series 2) Parallel. The SIMULINK environment of MATLAB is utilized for simulation. Under partial shading conditions, the effect of two environmental elements, irradiance and temperature, will be seen in the simulated features. The bypass and blocking diodes are employed to increase the performance of PV arrays, and their influence can be observed in the simulation. From the practical observation it is seen that almost 86.2 % more power can be obtained from the solar module from 25 % shading to 0% shading on module.