Analysis and research maximum power point tracking of photovoltaic array

The Photovoltaic Arrays has a best optimal operating point. When operating at this location, the array will be most efficient in the production of electricity. However, the optimal operating point can be compromised by the strength of solar radiation, angle, environment and fluctuations in workload. Due to the constant changes in these conditions, it has become very difficult to locate the optimal operating point by following a mathematical model. Therefore, this study will focus mostly on the application of fuzzy logic control theory and three-point weight comparison method in effort to locate the optimal operating point and achieve maximum efficiency in electricity production. The three-point weight comparison method is the comparison between the characteristic curves of the voltage of photovoltaic array and output power, it is a rather simple way to track the maximum output. The fuzzy logic control on the other hand, can be used to solve problems that cannot be effectively dealt with by calculation rules, such as concepts, contemplation, deductive reasoning, and identification. Therefore, fuzzy logic control is developed from the need to produce more accurate judgments from ambiguous or incomplete data without the process of complicated calculations.