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Matlab/Simulink双馈风力发电系统的仿真研究

时间:2017-01-11 11:42来源:毕业论文
利用Matlab/Simulink仿真软件,建立双馈发电机、交-直-交双PWM变换器、控制系统以及SVPWM模块等。建立完整的的双馈型风力发电仿真系统。通过对整个系统的仿真,验证了所建立的风电系统

摘要: 随着常规能源日趋匮乏,环境问题也日趋严重,风能作为一种洁净的可再生资源,在未来的能源领域中将发挥越来越重要的作用。随着风力发电技术的发展,双馈风力发电系统已经成为当前研究的热点。本文所要研究的就是双馈型风力发电系统的建模和仿真分析。
首先,本文结合变速恒频风力发电系统理论,具体分析了双馈型风力发电机组各组成部分以及工作原理。
其次,详细分析了双馈型发电机的基本运行原理,分别建立了发电机在三相静止坐标系和同步旋转坐标系下的数学模型,并引入了坐标变换的思想。
再次,采用交-直-交双PWM变换器作为双馈型风力发电系统的交流励磁电源,分别对网侧变换器和转子侧变换器的数学模型以及控制策略进行了详细讨论。最终确定网侧变换器采用电网电压矢量定向控制策略和空间矢量调制技术,转子侧变换器则也采用定子电压定向的矢量控制策略。
最后,利用Matlab/Simulink仿真软件,建立双馈发电机、交-直-交双PWM变换器、控制系统以及SVPWM模块等。建立完整的的双馈型风力发电仿真系统。通过对整个系统的仿真,验证了所建立的风电系统各部分数学模型的正确性以及相应控制策略的可行性。具有一定的理论和实际意义。5230
关键词:风力发电;双馈发电机;网侧变流器;转子侧变流器;Matlab / Simulink;毕业论文
Doubly-fed Wind Power Generation System Simulation Research 源¥自%六:维;论-文'网=www.lwfree.cn
Abstract:With the increasing shortage of conventional energy, environmental problems are becoming more and more serious, wind energy as a clean and renewable resource, plays a more and more important role in future energy field. With the development of wind power generation technology, doubly-fed wind power generation system has become a hotspot of current research. This paper is to study the double-fed wind power generation system model and analysis simulation results.
First, this paper study with the VSCF wind power system, has a detailed analysis of the double-fed wind power generation system components and working principle.
Secondly, detailed analysis the basic operating principle of double-fed generator, established the mathematical model of the generator in three-phase stationary coordinate system and synchronous rotating coordinate system, and introduction of a coordinate transformation thinking.
Again, using the AC-DC-AC dual-PWM converter as a AC excitation power for double-fed wind power generation system. Showing the circuit topology of the converter , and the mathematical model and control strategy of grid-side converter and rotor-side converter are discussed in detail. Ultimately determined to use voltage vector-oriented control strategies and space vector modulation technique on grid-side converter, and the rotor-side converter is used voltage vector oriented control strategy.
Finally, using simulation software named Matlab/Simulink, separately establish the doubly-fed generator AC-DC-AC dual-PWM converters, control systems and simulink module of SVPWM.
I established a complete simulation of double-fed wind power generation system. Through the simulation of the whole system to verify the various parts of the system mathematical model are created correctly and corresponding control strategy is feasible. It has some theoretical and practical significance.
KeyWords:Wind power; Double-fed generator; Nets-side convertor; Rotor-side convertor; Matlab/Simulink. 源¥自%六:维;论-文'网=www.lwfree.cn
目录
1绪论    1
1.1 选题背景及意义    1
1.2 国内外风力发电的研究状况及发展    2
1.2.1国外风力发电现状    2
1.2.2 国内风力发电现状    3
1.3 风力发电系统的基础理论    3
1.3.1 风力发电系统的基本运行方式    3 Matlab/Simulink双馈风力发电系统的仿真研究:http://www.lwfree.cn/zidonghua/20170111/2189.html
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