直驱式风力发电系统及其控制策略研究毕业论文.doc

毕业设计说明书(论文) 作 者： 学 号： 学 院：： 电气工程及自动化学院 系(专业)： 电气工程及自动化 题 目： 直驱式风力发电系统及其控制策略研究本文基于直驱式风力发电系统重点研究直驱式风力发电系统的最大风能跟踪控制。在具体了解后对在此基础上，本系统，对仿真以通过仿真研究证实控制算法的合理性 关键词： 直驱式风力发电系统 控制策略 MATLAB 毕业设计（论文）外文摘要 Title Research of Direct Drive Wind Power System and Its Control Strategy Abstract The wind energy as a clean, renewable green energy，has received considerable attention. Especially the direct drive wind power system is the most popular system because compared to traditional constant speed constant frequency wind power generation system it has many advantages，for example it saves investment，reduces the transmission chain loss and downtime, and has low maintenance cost and good reliability. This subject is based on direct drive wind power system and focus on direct drive wind power system with the largest wind power tracking control. After Understanding the output characteristics of wind turbine, the largest wind power tracking control the model of direct drive permanent magnet synchronous generator and the DC step-up circuit，Through MATLAB simulation software we can study direct drive wind power system simulation and control strategies，through simulation studies we confirm the rationality of control algorithms. Keywords：Direct drive wind power system Control strategy MATLAB 目 次 1 引言……………………………………………………………………………… 1 1.1国内外风力发电系统的发展情况…………………………………………………1 1.2直驱式风力发电系统发展状况……………………………………………………2 1.3本课题研究的意义和内容………………………………………………………4 2 直驱式永磁同步风力发电系统………………………………………………… 6 2.1概述……………………………………………………………………………… 6 2.2风力机的输出特性……………………………………………………………… 7 2.3最大风能追踪原理……………………………………………………………… 8 2.4直驱式永磁同步发电机模型……………………………………………………10 2.5 直流升压电路……………………………………………………………………13 3 直驱式风力发电系统控制策略………………………………………………… 17 3.1最大风能利用电路的实现………………………………………………………17 3.2变频器的设计……………………………………………………………………18 3.3最大风能利用电路的实现………………………………………………………18 3.4新型最大功率跟踪算法控制方案………………………………………………19 4 基