摘要绿色能源作用在当今时代的生活和生产中,同时已经涉及到全球各国家甚至是普通家庭。而绿色能源大家庭中占据重要地位的太阳能更是凭借它取不尽用不完的特性得到科学界的喜爱。光伏能源系列发电产品如光伏电池的基本特性总是会受到自然界环境还有其他的因素影响,造成的后续影响更加是难以预见的,而且光伏产品性价比很低,这就是目前还需要学者们解决的问题。
一开始时期是比较困难的,不论是什么样的或者是什么级别的光伏发电系统的投入都比较大的,如何能够高效率,高质量的利用太阳能,科学学者们给出的意见是对光伏发电系统进行及时而快速反应的控制。这次论文设计重点放在对光伏阵列的最大功率点mppt控制技术在理论研究分析方面建立Matlab仿真设计模型,结合实际情况实验验证。起先阶段,简洁明了的分析光伏发电系统的组成部分,并且在知道结构的基础上为构建光伏发电系统大楼添砖加瓦。例如什么是光伏系统,什么是电学性转换器,什么是太阳能持久性储能系统,什么是系统负载。先是根据光伏构成的网络架构,分别介绍了两种系统:高效率无延迟的独立发电和高产出低能耗并网发电。在准备了一些资料文献并且查询之后,在仿真软件Matlab上构建分阶段的模型,由简到繁慢慢深入。MPPT设计仿真算法里面我设计并仿真利用导纳增量法实现光伏电池的实现,另外还有一种方法扰动观测法,但是在这两种方法之前应该是建立必要的基础研究了该算法的基础算法,现实生活应用中我们有好多种形式的光伏发电,这就需要有相对应的最大跟踪实现策略,并且还能实现仿真再得到可行的运行结果。 70985
毕业论文关键词:太阳能;光伏发电系统;导纳增量法;扰动观测法;最大功率点追踪;
Design and Simulation of photovoltaic MPPT based on multiple algorithms
Abstract
The development and application of green energy has been involved in all aspects of people's daily life. The green energy family occupies an important position in the solar energy is by virtue of its endless use of the nature of the scientific community. However, the output characteristics of photovoltaic products are influenced by many factors of the external environment, and the conversion rate is not high.
In the early stage, the input of PV system is relatively high. In order to utilize solar energy efficiently, it is necessary to control the PV system in real time. This paper focuses on the design of the MPPT control system of the mix power dote of the photovotaic array in the theoretical research and analysis of the establishment of Matlab simulation design model, combined with the actual situation of the experimental verification. At the beginning, a concise analysis of the components of photovoltaic systems, and on the basis of knowing the structure of the building blocks to build photovoltaic power system. For example, what is a photovoltaic array, what is a power electronic converter, what is the energy storage system, what is the load, etc.. According to the link network composed of photovoltaic system, this paper introduces the independent generation system and grid connected generation system. In the preparation of a number of documents and queries, the simulation software Matlab to build a phased model, from simple to complex slowly. The maximum power point tracking algorithm, I designed the incremental conductance method, perturbation and observation method, but before the two methods of maximum power point tracking algorithm based algorithm, we have many kinds of photovoltaic power generation applications in real life, this requires a corresponding maximum tracking strategy, and also can realize the simulation again get the feasible operation results.