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摘要在全球能源日趋紧张和环境污染日益严重的情况下，风力发电凭借其清洁，可再生等优点，受到越来越多的关注。本课题的目的就在于补偿风力机模拟器的转动惯量，更好地模拟实际的风力机组工作状态，以便在不具有自然风场环境的实验里研究风力发电技术。 34010
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首先本文分析在自然风速条件下实际风轮机的静态、动态转矩输出特性，对此在MATLAB/Simulink环境中，建立相应的风轮机数学模型,针对实际风力机大转动惯量造成的影响，采用以加速度反馈为基础的电转矩补偿实现实际机组动态性能的模拟,完成仿真。通过仿真讨论了动态转矩补偿回路的滤波性能对转动惯量补偿的影响，在此基础上分析了控制参数-滤波器时间常数与结构参数-模拟器转动惯量的耦合协调关系，最后简单讨论了结构控制耦合的模拟器的设计思路。
关键词 风力机模拟器 大转动惯量 转矩补偿 低通滤波器 结构-控制一体化设计
毕业论文设计说明书外文摘要
Title An Integrated Structure/Control Design Method for Wind Turbine Simulator
Abstract
With the growing of global energy crisis and concerns about the environment, wind power generation achieves more and more attention due to its cleanliness, reproduction and other advantages. For further researching into wind energy conversion technique, wind turbine simulator (WTS) is of great help because it can reproduce the dynamic characteristic of field wind turbine in the lab conveniently. The paper aims at simulating the operation principle of field wind turbines by compensating the inertia of wind turbine simulator.
Firstly, the static and dynamic characteristics of the output torque of wind turbines under the condition of natural wind is analyzed, And the corresponding mathematical model of wind turbines is established in MATLAB/Simulink. Considering the effect of large moment inertia of field wind turbines, dynamic torque compensation strategy based on acceleration feedback is utilized to emulate the dynamic performance of wind turbines. Then, the influence of the low pass filter (LPF) in the compensation loop on the inertia compensation strategy is discussed based on numerical simulations. On this basis, the coupling relationship between the control parameter( time constant of the LPF) and the structure parameter( moment inertia of the simulator) is analyzed carefully. Finally, this paper briefly discusses the design method of the wind turbine simulator considering both structural parameters and control design.
Keywords wind turbine simulator large inertia torque compensation
low pass filter an integrated structure/control design method
目 次
1 绪论 1
1.1 风力发电简介 1
1.2 模拟器的研究意义 2
1.3 国内外研究现状 2
1.4 主要内容与章节安排 4
2 风轮机模拟系统的数学模型 5
2.1 风力机的静态特性 5
2.2 风力机的动态特性 7
2.3 动态转矩补偿 9
2.4 低通滤波器的分析 10
2.5 负载模块 13
2.6 本章小结 13
3 仿真结果和分析 14
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