摘要:当今社会能源消耗飞速增长,导致,能源危机日益加剧,与此同时环境污染问题也日益严重,因此用可再生清洁能源代替现在的化石能源被人民视为解决能源危机和环境污染问题的最有效的途径,而风能作为可再生清洁能源中贮量大、容易被使用的能源,被人民大规模使用,因此如何利用风能进行发电的风力发电技术也成为了目前可再生能源研究的热点之一。本文在阅读国内外大量风力发电相关文献的基础上,本设计简单介绍了变速恒频风力发电系统的自动控制,按照相关文献的介绍,首先阐述了变速恒频风电技术的优点,论述了当今变速恒频系统对风力发电有重要的促进作用。其次简单分析了变速恒频风机的工作原理,最后从控制角度分析了风力机的自动捕风原理,通过对其数学模型以及曲线的分析,了解其工作的基本步骤,以及如何实现自动捕风的过程。
关键词:变速恒频;数学模型;风力机;自动控制7134
Variable speed constant frequency (VSCF) wind power generation system Adaptive Control Method
Abstract:Rapid growth in energy consumption in today's society, leading, growing energy crisis, while also becoming increasingly serious environmental pollution problems, so use renewable clean energy to replace the current fossil energy by the people as the solution to the energy crisis and environmental pollution problems of the most effective pathway, while the wind as a renewable clean energy storage in large, easy to use energy, large-scale use by the people, so how to generate electricity using wind energy wind power technology has become the current renewable energy research hotspot. In this paper, reading a lot of wind power at home and abroad on the basis of relevant literature, the design brief introduction VSCF wind power generation system of automatic control, in accordance with the relevant literature describes, first expounded VSCF wind power technology advantages, discusses today's shifting constant frequency wind power generation system has an important role in promoting. Second, a simple analysis of VSCF wind turbine works, the last from the perspective of a wind turbine control automatically catch the wind principle, through its mathematical model and the curve analysis, to understand the basic steps of their work, and how to implement automatic catch the wind process.
Key Words: VSCF;Mathematical model;Wind turbine;Automatic control1绪论
目录
1绪论 4
1.1选题背景及意义 4
1.2国内外风力发电的研究现状及发展趋势 5
1.2.1国外风力发电现状 5
1.2.2国内风力发电现状 5
1.3风力发电系统的基础理论 6
1.3.1风力发电系统的基本运行方式 6
1.3.2变速恒频风力发电技术 7
1.3.3双馈发电机的控制策略 9
1.4.本论文主要内容 10
1.5 本章小结 11
2 双馈发电机的运行原理及其数学模型 12
2.1双馈风力发电机运行原理 12
2.2风力发电系统中双馈发电机数学模型 13
2.2.1三相静止坐标系下双馈发电机的多变量数学模型 13
2.2.2坐标矢量变换 15
2.2.3两相同步旋转坐标系下双馈发电机的数学模型 18
2.3本章小结 19
3 双馈风力发电系统变流器的建模及控制策略 20
3.1双PWM变换器的拓扑结构 20
3.2.网侧变换器的建模与控制 20
3.2.1三相静止坐标系下的数学模型 20
3.2.2旋转d-q坐标系下的数学模型 22 变速恒频(VSCF)风力发电系统的自适应控制方法研究:http://www.youerw.com/zidonghua/lunwen_4929.html