内蒙古工业大学本科毕业论文
风力发电机调速原理调速方式毕业论文
摘 要
自从风力机出现时就对风力机的调速有了一定的需求。调速的主要目标是实现在不同的风速时，把风力机的转速和功率限制在额定值范围内，以保证风力发电机能够安全运行。早期的风力发电机就已经具有简单的机械装置以实现这些控制目标，这对于早期的小型风力机是可以满足的。但是风能产业的发展，风力发电机的尺寸及功率的增加，对于调速的要求也日益提高。
本论文简述了风力发电机的调速原理和不同调速方式，以及不同方式的优缺点，还对风力发电机的前景进行了分析和展望。首先介绍了风力机调速结构在国内外的研究现状，和风力发电的前景与展望，然后介绍了风力发电机要调速可以通过功率调节方式，主要描述了定桨距失速调节和变桨距调节，定桨距失速调节主要叙述了调速原理和它的优缺点及应用；变桨距调节中除了描述了变桨距的调速原理和优缺点及应用还详述了独立变桨、统一变桨和主动失速调节等多种变桨距调速方式。最后描述了另外一种调速方式就是通过风力发电机变速运行的方式来实现，描述了变转速的原理、分类、优缺点及运用。
关键词：风力发电机；调速原理；调速方式
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内蒙古工业大学本科毕业论文
Abstract
Since the wind machine appears on a certain demand for speed. The main objective is to achieve speed at different wind speeds, the wind turbine's speed and power limitations within the rating range, in order to ensure safe operation of wind turbines. Early wind turbine has a simple mechanical device to achieve these control objectives, which for small wind turbines is early to meet the. But the development of wind turbines to increase the size and power of the wind energy industry, for the governor's requirements are increasing.
This paper outlines the principles of wind turbine speed governor and different ways, and the advantages and disadvantages of different ways, but also the prospects for wind turbines are analyzed and discussed. Firstly introduced wind turbine speed prospect and prospect research status of the structure, and wind power, wind turbines and then introduced to the governor by the power adjustment method, describing the fixed pitch stall regulation and pitch regulation, fixed pitch stall speed adjustment mainly describes the principle and its advantages and disadvantages and applications; pitch adjustment in addition to the governor and the application of the principles and describes the advantages and disadvantages of variable pitch also details the individual pitch, unity pitch and active stall regulation and other pitch speed mode. Finally, the governor described another way is through wind turbines way to achieve variable speed operation, describes the principles of variable speed, classification, advantages and disadvantages of the use.
Keywords: wind turbines，governor principle， Speed mode
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内蒙古工业大学本科毕业论文
目 录
第一章 绪 论 ................................................................................................................................... 1
1.1 课题研究的背景及意义 ......................................................................................... 1 1.2课题研究的现状 ...................................................................................................... 1
1.2.1 风能的发展现状 ........................................................................................... 1 1.2.2本课题国外的研究现状 ................................................................................ 2 1.2.2本课题国内的研究现状 ................................................................................ 4 1.3 本课题的研究内容 ................................................................................................. 5 第二章 定桨距失速调节 ................................................................................................................. 6
2.1定桨距失速调节方式 .............................................................................................. 6 2.2 定桨距失速调节方式的分类 ................................................................................. 7
2.2.1偏向式............................................................................................................................ 7 2.2.2气动阻力式 .................................................................................................. 12 2.3 定桨距失速调节的优缺点与应用 ....................................................................... 13 第三章 变桨距调节 ........................................................................................................................ 15
3.1 变桨距调节的原理 ............................................................................................... 15 3.2 变桨距调节的分类 ............................................................................................... 15
3.2.1 主动失速调节方式 ............................................................................................... 16 3.2.2统一变桨距调节 .......................................................................................... 17 3.2.3 独立变桨距调节 ......................................................................................... 19 3.2.4 机械离心式 ................................................................................................. 20 3.2.5弹（柔）性变桨距 ...................................................................................... 23 3.2.6机械离心螺旋副变桨距 .............................................................................. 24 3.2.7风压变桨距 .................................................................................................. 25 3.3 变桨距调速方式的优缺点及应用 ....................................................................... 27 第四章 变转速运行调节 .................................................................................................................. 28
4.1变转速运行调节的原理 ........................................................................................ 28 4.2 变转速调节的分类 ............................................................................................... 28
4.2.1 双速运行 ..................................................................................................... 29
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风力发电机调速原理调速方式毕业论文
