Research On Technology Of MPPT Tracking Photovoltaic Power Generation System Based On Boost Converter

Solar energy is recognized as a green energy, there is an inexhaustible, inexhaustibleclean, no pollution and other advantages, more and more attention all over the world.Photovoltaic power generation technology is one of an effective way to use solar energy.Because the cost of photovoltaic power generation the universal application of the relativelyhigh, conversion efficiency is low. In order to reduce the system cost and effective use ofsolar energy, in addition to the development of new solar panels, improve the photoelectricconversion efficiency, the maximum power of the solar panel tracking technology isparticularly important.An important aspect of the solar power generation technology research, is the use ofmaximum power point tracking technology, make the solar panels can maintain the maximumpower output, so as to improve the efficiency of power system. Firstly, based on the analysisof the theoretical basis of principle, composition and system of photovoltaic generationsystem classification, we know that the current application and grid-connected powergeneration technology of solar power generation technology is the main developing directionof application of solar power generation technology. Secondly, this paper analyzes the circuitperformance and advantages of Boost, and summarizes the two important role of Boost circuitin hardware implementation. Finally, introduces several common maximum power pointtracking methods, and their advantages and disadvantages are compared. This paper mainlyintroduces the theory of incremental conductance method with fixed step, and established asimulation model for the tracking solar panels and the maximum power point, through thesimulation analysis, the characteristics of the output waveform under various conditions. Atthe same time, the method of conductance increment MPPT control variable step size isproposed by modeling, analysis, simulation, compared with fixed step size, the method hasbetter dynamic and steady-state performance, providing theoretical support for furtherresearch.