光伏并网发电系统MPPT算法研究

摘要

Solar energy is a green renewable energy , its application prospects, but the impact of the external environment on the output characteristics of the photovoltaic cells is relatively large, resulting in the conversion efficiency of photovoltaic cells is relatively low. Currently , an important direction for research PV photovoltaic technology is how to maximize the output power of the photovoltaic cell . In order to make the PV array maximum power output, the output power and high-quality sine wave into the grid , to reduce pollution on the grid , you need photovoltaic grid inverters for photovoltaic array operating point adjustment , and power conversion input grid. The main contents and results are as follows: ⑴for solar photovoltaic systems are analyzed briefly the components of photovoltaic systems , also describes the development of photovoltaic industry at home and abroad . Study the solar photovoltaic cells, in a changing external environment, strongly non-linear output characteristics of solar cells on its analysis caused some difficulties. So to build a photovoltaic cell research suitable for a mathematical model . The simulation analysis, the non-linear relationship between the photovoltaic cell current, voltage, power between lay a theoretical foundation for the full text of research . ⑵describes the photovoltaic grid inverters. Inverter definition , classification and topology briefly introduced . Then focuses on the photovoltaic inverter and network control strategy. Grid current control strategy for a detailed study to build a MATLAB model , the simulation to achieve the desired effect , and to achieve a synchronous network voltages and currents. ⑶describes the maximum power point tracking , including the constant voltage method , perturbation and observation method , incremental conductance method, a fixed parameter method , the actual measurement, the current scanning method , adaptive fuzzy control method. And constant voltage method , perturbation and observation method , the MATLAB simulation , disturbance observation of environmental change in larger areas prone to

目录

封面

声明

中文摘要

英文摘要

目录

第1章 绪论

1.1 课题研究背景及意义

1.2 MPPT技术相关研究

1.3 光伏电站MPPT发展现状及趋势

1.4 本文的主要研究内容

第2章 光伏电池特性及模型

2.1光伏电池的特性

2.2 光伏电池MATLAB仿真与特性分析

2.3 本章小结

3.逆变器控制策略

3.1三相并网逆变器的数学模型

3.2逆变器的控制

第4章 光伏电站最大功率跟踪算法研究

4.1 光伏电站传统最大功率点跟踪算法

4.2牛顿插值算法结合扰动观察法

4.3本章小结

第5 章 光伏电站模型MATLAB的搭建与仿真结果

5.1 光伏电站模型模块

5.2 光伏电站模型仿真结果与分析

5.3本章小结

第6章 总结和展望

6.1 总结

6.2 展望

致谢

参考文献