Research On Maximum Power Point Tracking Control For Photovoltaic System

In recent years,the global ecological environment has been destroyed,the environment is polluted,fossil energy will be exhausted in the near future.These phenomena have caused a great deal of disturbance and harm to our normal work,study and life.If you do not want to suffer the risk of extinction in the future,the development of new energy has become the first to save mankind.In recent years,the development of energy,solar energy with its obvious advantages of the characteristics of the gradual recognition and attention.From the advent of solar cells,to the gradual development of the use of solar photovoltaic power generation,human beings will be the advantages of the sun’s energy to play the most incisive.Solar photovoltaic power generation is a process that changes the energy of the sun after a series of changes,and then turns it into electricity,which is then stored or used.But not at work to ensure the photovoltaic cell has been working with the utmost efficiency,because it will be affected by external factors,so the maximum output power point for photovoltaic cells to become more meaningful.Photovoltaic power generation systems can be constructed in many forms.This time I mainly through the study of the topology structure,function model and comparative strength of various DC/DC converter circuit,on the basis of the original after a series of improvements,and proposed a new method to achieve maximum power point tracking purposes.Through the experiment,we know that the efficiency of the photovoltaic cells to convert the energy in addition to its own structure,but also by the impact of solar radiation intensity and ambient temperature.And it was found that it was not linear.Through the analysis of the output power of photovoltaic cells under different conditions,combined with the new method to achieve the goal of maximum power point tracking.Based on the study of photovoltaic cell mathematical model,the common methods and new methods in the simulation of Matlab/Simulink without contrast.Can be seen from the simulation of the image that the new approach has a very good practical performance.Based on the theoretical analysis,the hardware and software of the maximum power point tracking system are studied respectively.Through the analysis and research to find the most appropriate components as a part of the system hardware and software,and the detailed design process are introduced.The effectiveness of the new method is confirmed by experiments,and the purpose of the study is completed.Finally,through the establishment of experimental platform to further verify that the design is feasible.