摘要光伏发电并网可以将太阳能方便的转换成电能并入电网提供给用户使用,因此在电能广泛应用的今天,对光伏发电并网技术的研究具有重要意义。
本文总结了目前较典型的几种光伏并网发电系统的控制方法,同时介绍了较为常用的滤波器设计算法。以分析并网原理和输出滤波器技术及其电气特性为核心,运用电力电子仿真与设计软件,研究光伏并网发电系统并网原理和输出滤波器技术,控制逆变器输出的交流电为稳定的高质量正弦波,且保证并网电流与电网电压同频同相。在此基础上,进行仿真分析与实验验证。并对所需解决的理论和实践问题进行了讨论。9398
关键词 光伏发电 控制 滤波器 并网
毕业设计说明书(论文)外文摘要
Title Research on Control Technology of Grid and Output Filter Design for Photovoltaic Generation System
Abstract
Solar energy can be easily converted into electricity power to the user by grid-connected photovoltaic power generation. Therefore, the technology research on the grid-connected photovoltaic has very important significance while the electric energy is widely used today.
This paper summarizes kinds of the typical photovoltaic grid-connected generation system control method and also introduces the design algorithm of the commonly used filer. It takes analyze the grid principle and output filter technology and its electrical characteristics as the core, at the same time the power electronic simulation and design software are used to research on principle of the GCPV grid-connected principle and output filter technology. It is also used to control the output of the inverter AC as the stable and high quality sine wave, and ensures the grid-connected current and grid voltage are with the same frequency and phase. The simulation analysis and test verification are carried on this foundation. At last the problem on the theoretical and practical implications are also discussed in this paper.
Keywords Photovoltaic generator Control Filter Grid目 次
1 绪 论1
1.1 课题研究背景1
1.2 光伏并网发电1
1.3 课题研究意义及论文主要研究内容6
2 光伏发电系统的并网控制8
2.1 功率变换技术8
2.2 并网逆变器控制策略的研究15
2.3 本章小结25
3 滤波器原理26
3.1 前言26
3.2 L滤波器的设计方法26
3.3 LCL滤波器的设计方法30
3.4 本章小结36
4 基于并网光伏滤波器的软件仿真37
4.1 软件仿真37
4.2 本章小结44
结 论46
致 谢47
参 考 文 献48