基于ARM和DSP的嵌入式光伏发电系统

发布时间：2018-05-05 22:37

本文选题：光伏 + MPPT　；参考：《江苏大学》2016年硕士论文

【摘要】：随着能源与环境问题的日益加重,人类对新能源的利用日渐迫切。太阳能光伏发电因其本身的可再生性,清洁性,取之不尽用之不竭等优点,成为世界能源组成的重要部分。分布式小型光伏发电系统的研究成为了热点,本文搭建了600W光伏逆变器实验平台,主要从以下四个方面进行研究:本文的研究内容主要包括以下几点:1.本文在分析光伏电池的基本工作原理、等效电路和数学模型基础之上,研究了最大功率点跟踪原理,对常用的几种最大功率跟踪控制算法进行了对比分析,提出了一种基于温度和光强反馈的最大功率点跟踪方法,并对该算法进行了Matlab仿真。其仿真结果表明在外界环境变化时能够快速地跟踪光伏电池新的最大功率点。2.设计了光伏发电离网逆变器的总体方案,采用单相隔离两级式逆变拓扑结构。前级最大功率点实验平台采用Boost电路对48V蓄电池进行充电,后级采用推挽电路进行电压48V到360V的升压后通过全桥电路进行逆变到220V。3.根据系统的技术指标,本文对多种控制器进行选型,最终选择了TMS320F2812 DSP和ARM S3C2440作为主控制器。TMS320F2812 DSP主控制器驱动前级Boost电路和后级的全桥逆变电路,ARM S3C2440作为服务器使用。4.用户可以用Android手机登陆到ARM S3C2440的服务器来监控光伏系统的前后级电压、电流和功率情况。5.在理论研究和仿真分析的指导下,给出了前级驱动、前级升压、后级驱动和后级逆变的实验波形,并给出了手机监控界面。
[Abstract]:With the aggravation of energy and environment problems, the use of new energy is becoming more and more urgent. Solar photovoltaic power generation has become an important part of the energy composition of the world because of its renewable, clean, inexhaustible and other advantages. The research of distributed small photovoltaic power generation system has become a hot spot. In this paper, a 600W photovoltaic inverter experimental platform is built, which is mainly studied from the following four aspects: the research content of this paper mainly includes the following points: 1: 1. On the basis of analyzing the basic working principle, equivalent circuit and mathematical model of photovoltaic cell, the principle of maximum power point tracking is studied in this paper, and several commonly used maximum power tracking control algorithms are compared and analyzed. A maximum power point tracking method based on temperature and intensity feedback is proposed, and the algorithm is simulated by Matlab. The simulation results show that the new maximum power point. 2. 2 can be quickly tracked when the external environment changes. The general scheme of photovoltaic off-grid inverter is designed, and the single-phase isolated two-stage inverter topology is adopted. The Boost circuit is used to charge the 48V battery on the front stage maximum power point experimental platform, and the push-pull circuit is used to boost the voltage from 48V to 360V and then invert to 220V.3via the full-bridge circuit. According to the technical specifications of the system, this paper selects various kinds of controllers. Finally, TMS320F2812 DSP and ARM S3C2440 are selected as main controller. TMS320F2812 DSP master controller drives the front Boost circuit and the rear stage full-bridge inverter circuit arm S3C2440 as the server. Users can log on to the ARM S3C2440 server using a Android phone to monitor the voltage, current and power of the photovoltaic system. Under the guidance of theoretical research and simulation analysis, the experimental waveforms of the front stage drive, the front stage boost, the rear stage drive and the rear stage inverter are given, and the mobile phone monitoring interface is given.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM615

【参考文献】