基于ARM的光伏陣列最大功率跟蹤系統(tǒng)的研究
[Abstract]:Energy is the material foundation of social existence and progress. As an inexhaustible clean energy, solar energy has been paid more and more attention. Solar energy is an important supplement to today's energy. In the long run, it has the potential to become the main energy in the future. In this paper, the core problem of photovoltaic power generation, maximum power tracking (MPPT), is studied systematically and deeply by simulation and experiment. The basic problem in the research of maximum power tracking system is the output characteristic of photovoltaic array. The output characteristics of photovoltaic array are studied in detail, and the simulation model of photovoltaic array is established by using Matlab/Simulink, which is the basis of the research of the whole maximum power tracking system. In addition, the Boost transform circuit is used to match the internal resistance of the photovoltaic array to realize the maximum power point tracking of the photovoltaic array, and the simulation model of the system is established. MPPT algorithm is the soul of this control system. In this paper, Matlab/Simulink is used to simulate several common MPPT control algorithms, and the simulation results are analyzed and compared. An improved control algorithm, the stepwise approximation method, is proposed. The analysis of simulation results shows that the algorithm has good dynamic response speed and stability, and has the ability to adapt to environmental changes quickly. In this paper, the overall structure and control scheme of the maximum power tracking system are presented. The hardware platform of the maximum power tracking system is built with the microcontroller LPC2210 as the core, and the effectiveness of the stepwise approximation method is verified by experiments.
【學(xué)位授予單位】:合肥工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TM615;TP368.12
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