风力发电毕业论文.doc

目录 目录 I 摘要 1 ABSTRACT 2 前言 3 第一章 风力发电的现状背景和意义 4 一 、风力发电的现状 4 二．风力发电的潜力 5 三、发展风电刻不容缓 6 第二章 风力发电机 8 一.风力发电机主要类型 8 1. 1 恒速风力发电机 8 1. 2有限变速风力发电机 8 1. 3变速风力发电机 9 (二)不同风力发电机的综合比较 10 2. 1 年能量利用率和经济性的对比分析 10 2. 2 不同类型风力发电机市场应用情况 11 第三章 风力发电控制技术 13 3．2 变桨距风力发电技术 13 3．3 主动失速／混合失速发电技术 13 3．4 变速风力发电技术 13 3.5风力发电系统的智能控制 14 3.6 模糊控制 14 3.7 神经网络控制 14 3.8技术发展趋势展望 15 第四章 未来发展的建议 16 参考文献 17 致谢 18 风力发电 摘要 风能是太阳能的一种转换形式，是一种重要的自然能源。太阳照射到地球表面，地球表面各处受热不同，产生温差，从而引起大气的对流运动形成风。据估计到达地球的太阳能中虽然只有大约2%转化为风能，但其总量仍是十分可观的。全球的风能约为2.74×109MW，其中可利用的风能为2×107MW，比地球上可开发利用的水能总量还要大10倍。 本次毕业设计的重点是拟设计简易的风力发电实验仪，该设备能让学生容易了解风力发电的原理，以及大致测算出影响风力发电的各个因素，方便以后的大学物理实验教学，同时在制作和测试过程中对出现的一些现象进行深刻的思考，具有很强的实用性和趣味性。在研制的过程中，同时对风能的转化功率，风速等影响发电的因素，进行测量，并与理论进行对比，进而得出影响效率的因素。 关键词：风能发电； Instrument of wind power experiment ABSTRACT Wind energy is the form of a conversion of solar energy is an important natural energy. Sun to the Earths surface, Earths surface throughout the heat generated temperature difference, thus the formation of wind caused by atmospheric convection. According to the estimated solar energy reaching the Earth is only about 2% conversion of wind energy, but its total is still very considerable. The global wind energy is about 2.74 × 109MW, which can make use of wind energy for the 2 × 107MW, the total amount of development and utilization of water energy than on Earth 10 times. Wind energy as a non-polluting, renewable green energy, it is of great significance in solving the global energy and environmental crises. Therefore, wind power has become the focus of the study of scholars from various countries. At present, domestic scholars on the study of large-scale wind power has become increasingly mature, but for the development of laboratory wind turbine is still lacking. The focus of this graduation project is intended to design a simple experiment instrument of wind power, the device allows students to easily understand the principle of wind power, as well as roughly estimated that the various factors