matlab光伏发电系统并网控制策略研究
关键词 光伏发电 MPPT控制 逆变器 两级式并网
毕业论文设计说明书外文摘要
Title Photovoltaic power generation system and the research of grid-tied control strategy
Abstract
The society and technology has been in constant developed and progressed, the problem of energy shortages and environmental pollution has emerged, the situation has become increasingly serious,the human being cry for developing new energy to solve the plight of development.Solar photovoltaic power generation has gathered the widespread attention of the world because of its advantages that it can be accessed easily and has no pollution,it’s becoming a hot spot of current research.This paper regarded the photovoltaic power generation system as the main content,studied the principle of photovoltaic power generation and some common maximum power tracking control methods and it’t advantages and disadvantages,analysed the structure and control methods of photovoltaic power generation system deeply,including DC-DC and DC-AC conversion circuit.After that,this paper established the model of single-phase photovoltaic grid system and three-phase photovoltaic grid system,and built the dynamic simulation model in the simulink of matlab for the simulation,the model has been verified to be reasonable and effective.
Keywords photovoltaic power generation;maximum power point tracking control ;inverter;two levels of grid
目 次
1 绪论 1
1.1 课题研究的背景及意义 1
1.2 光伏并网发电的发展现状 1
1.3 光伏并网发电技术的研究现状 3
1.4 相关文献的研究状况 5
1.5 论文的主要研究内容 6
2 光伏电池的模型建立以及仿真 7
2.1 光伏发电的工作原理 7
2.2 光伏电池的等效模型建立以及仿真 7
2.3 本章小结 12
3 光伏发电系统的MPPT控制方法的研究 13
3.1 MPPT（最大功率跟踪）原理 13
3.2 常用的MPPT控制算法及仿真 13
3.3 MPPT控制的建模与仿真 18
3.4 本章小结 26
4 光伏发电系统单相并网的设计与仿真 27
4.1 并网逆变器的选取 27
4.2 单相光伏发电并网结构 29
4.3 并网控制策略的选取和设计 29
4.4 单相并网仿真电路的搭建及仿真结果 31
4.5 本章小结 33
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