Performance analysis of pv array interconnection schemes for enhancing the maximum power under partial shading condition

Abstract

The use of Renewable Energy Sources (RESs) in the generation of electricity is steadily increasing due to their diversity and capacity to support utility networks. Because the performance of solar PV relies on environmental factors like temperature and irradiance, conducting research in this area towards the ideal PV design and power augmentation in production is also a never-ending process. Partial Shading (PS) is a critical issue that impacts the production and lifespan of PV plants. The major causes of PS phenomena are moving clouds, bird droppings, the accumulation of dust on PV modules, etc. The PV modules in the string receive different amounts of irradiation because of the PS phenomenon. Additionally, under partial shading conditions, the shaded PV module loses its ability to supply the standard current on a regular basis, and its temperature peaks are the observable conclusion in the electrical characteristics of a system coupled to a bypass diode. When the PV system receives full irradiance, the system operates at a single peak in the Power-Voltage (P-V) curve called Global Maximum Peak Power (GMPP), which is the optimum point of the panel. During PS conditions, the P-V curve will have various local maximum points with one global maximum point. The interconnection of PV is an effective approach for dealing with PS issues. It is accomplished by arranging the PV modules, based on their temperature and shading stages. newlineThe Maximum Power Point Tracking (MPPT) techniques are used to trace and extract the Gobal Maximum Power (GMP) from various local maximum power points in the PV plot. Optimization algorithms with intellect and refined computing-based systems are used to generate the best switching scenarios. With this approach, the reduced switching patterns provide power switch utilization for a longer period. Another method is to enhance the PV voltage and current under PS conditions by using various converters. The Modified Butterfly Optimization iv newline newlineAlgorithm (MBOA) is suggested in this thesis as a meth