Research On MPPT Control And Energy Management Of Independent Photovoltaic Power Generation System

Nowadays,the fact that the shortage of the fossil energy,environmental pollution and other issues turn to be more and more serious make the solar energy get rapid development and application due to its unique advantages,and photovoltaic power generation has became the main direction of use of the solar energy.How to obtain the maximum efficiency of solar energy has been alaways one of the major research issues of photovoltaic power generation,and the battery as an independent energy storage equipment of the photovoltaic power generation system,the circulation service life has a serious impact on system stability,so the battery energy management is also extremely important.Based on this this paper studies the maximum power point tracking technology(MPPT)and the battery energy management in the independent photovoltaic power generation system.The main research contents are as follows:First,the paper reviews the domestic and foreign literatures related to photovoltaic power generation to understand the background of photovoltaic power generation,analyzes the research status of the MPPT and battery energy management at home and abroad,and expounds the main types of photovoltaic power generation system.Secondly,the principle of solar cell power generation is expatiated,and the mathematical model of solar cell is analyzed in detail,including the theoretical model and the engineering mathematical model.According to the engineering model of solar cell in MATLAB/Simulink is simulation model proposed and deliberate on the output characteristics of the solar cell.Thirdly,the working principle,the main characteristic parameters and the factors that influence the life of the battery are analyzed and researched,and also the several methods for the prediction of the remaining capacity of the battery.At the same time The battery residual capacity forecasting method is also introduced and elaborate how charge and discharge control according to the battery remaining capacity of the battery.Fourthly,the principle of MPPT is analyzed,and the advantages and disadvantages of several MPPT techniques are compared.The adaptive perturbation observation method based on Kalman filter is introduced in detail,and the Simulation modeling analysis of the control strategy is in progress.Fifthly,this paper builds the experiment platform of independent photovoltaic power generation system based on DSP28027 chip and make experimental verification of the residual capacity of battery prediction strategy and maximum power point tracking control strategy the experimental results show that the control strategy is valid.