Interpolation Method In The Application Of Mppt Photovoltaic Power Generation System Research

With the rapid development of photovoltaic industry year by year,improving the efficiency of photovoltaic power generation is particularly important.PV power output properties easily influenced by solar illumination intensity and environment temperature factor,there still exists certain questions lead to power generation efficiency.The research content of this paper is combined with the output characteristics of photovoltaic cells,considering the external environment the change of light intensity and temperature,on the basis of classic tracking MPPT algorithm using the new algorithm to improve the photovoltaic cells ability to adapt the environment,increase the solar battery power,improve the efficiency of the photovoltaic power generation systems.In this paper,the main content is as follows:(1)Of solar photovoltaic power generation system are analyzed and introduced,the first is the introduction of different parts of the photovoltaic system,at the same time also introduces the developing situation of the photovoltaic industry in recent years and the expectations for the future.This paper studied to verify the nonlinear output characteristics of photovoltaic cells,and after joining algorithm for its output power adjustment.This article set up a reasonable mathematical model of the battery,the simulation analysis of photovoltaic cells of the nonlinear relationship between current,voltage and power,laid the foundation for full text study.(2)For MPPT control algorithm,in the part of this paper introduces the conventional tracking algorithm and intelligent algorithm,which focus on after elaborated the characteristics of classic algorithms respectively using dichotomy,Lagrange interpolation method and the Newton interpolation method are analyzed theoretically by these algorithms can optimize some problems that exist in the classic algorithms,combining with photovoltaic cells output variables,combining algorithm flow chart,the MPPT control module for different algorithms of model building,so that the paper at the back of the simulation study.(3)Photovoltaic cells output using booster circuit as needed in the process of direct current control circuit,using dichotomy,Lagrange interpolation method and the Newton interpolation...