摘要：太阳能是当前世界上最清洁、最现实、最有大规模开发利用前景的可再生能源之一。与此同时，光伏并网发电也已成为目前世界范围内太阳能利用的主要途径，因此开发使用太阳能具有重要的现实意义[1]。近些年,高性能的DSP（数字信号处理芯片）的出现，使得一些先进的控制策略能够成功的应用于光伏并网逆变器中[2]。在此背景下，本文对光伏并网系统中的核心，即并网逆变器，进行了比较广泛的研究。选取TI公司的TMS320C28X系列DSP28335作为主控芯片，以最大程度的利用太阳能，通过闭环稳定交流输出为主要目标，开展了Boost升压斩波、DC-AC逆变的理论和试验研究，具有现实意义。
本设计在参阅大量相关文献的前提下，比较了常用光伏并网逆变器的主电路拓扑结构，确立了基于单相并网逆变器的两级式并网结构。结合该结构模型，本设计对光伏升压、并网逆变、采样调理、LC低通滤波等主要电路进行了电路原理图设计、参数计算与器件选型、手工PCB制作、焊接与软件调试等相关工作。对于并网逆变的控制，本设计采取了改进的SPWM控制方案，并通过程序实现该控制。与此同时，本文采用致同霍尔电压传感器来进行交流输出电压的采样，通过寻找电压值与调制比的关系，进而实现交流输出的闭环控制。其次，分析阐述了太阳能电池板（光伏阵列）的工作原理、等效模型、光照和温度特性以及输出特性等，并阐述了最大功率点跟踪（MPPT）的控制策略。
基于以上的研究工作，本设计最终在CCS6.0软件平台下开发了一套100W的小型光伏并网系统，该系统可以较好的实现本文提出的控制方案应对的各项功能，控制方案简单可行，性能稳定可靠。
关键词：太阳能，并网逆变器，DSP，SPWM，MPPT
Abstract：Solar is one of the world's cleanest, most extensive and most promising renewable sources of energy, so the development and use of solar energy is of great strategic significance. Among them, the solar photovoltaic power generation is the main trend of solar photovoltaic use, which photovoltaic industry will be rapid development. In recent years, the emergence of high-performance DSP (Digital Signal Processing chip), so that some advanced control strategies can be successfully applied to photovoltaic grid-connected inverter. In this context, the core of the PV grid-connected system that photovoltaic grid inverter has been studied in depth. Maximizing the use of solar energy and the grid-connected is followed by the feedback as the main goal, using TI's TMS320F28335 Master chip carried out the theory and experimental research of BOOST boosting, DC-AC inverter. It has practical significance.
In this paper，the main circuit structure and control scheme of PV grid-connected inverter are compared，and a two-stage grid-connected structure based on single-phase grid-connected inverter and an improved constant frequency SPWM current control scheme are proposed. Secondly, the model and output characteristics of solar panels are analyzed and several commonly used maximum power point tracking (MPPT) control strategies are analyzed and described.
According to the overall control scheme of the system, this paper introduces the design of hardware circuit and the development of CCS6.0 software platform：the main circuit structure, parameter calculation method, device selection; control circuit structure, parameter calculation method, device selection; hardware resource allocation; software design flow chart and so on.
Keywords: solar energy，grid-connected inverter，DSP，SPWM，MPPT
目录
第一章绪论 1
1.1研究背景及意义 1
1.2国内外研究现状 DSP光伏并网控制装置的设计+源代码:http://www.youerw.com/zidonghua/lunwen_205047.html