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摘要风能作为一种清洁的可再生能源，能有效缓解能源危机，近年来受到界各国的重视，风电产业发展迅速。目前，市场上主流的两种风力发电机组分别是带齿轮箱的双馈异步风电系统和无齿轮箱的永磁直驱同步风电系统。相比之下，永磁直驱风力发电系统因其效率高、制造方便、控制效果好等优势逐渐成为人们研究的重点。 本文将采取背靠背拓扑结构的永磁同步风力发电机作为研究对象，首先建立了风力机的数学模型，并对其最大功率点跟踪（MPPT）原理进行了详细的探究；接着建立了永磁同步发电机在三相静止坐标系和两相旋转坐标系下的数学模型，并详细介绍了空间电压矢量控制技术（SVPWM） ；最后在 MATLAB/Simulink 环境下建立了整个风力发电机机侧仿真模型。 基于模型的设计（MBD）经过多年的发展逐步完善，已被广泛接受。MATLAB提供了这种新编程方式的平台，通过 Real-Time Workshop 和 TI 的开发工具，能够将 Simulink 仿真模型转换成实时 C 代码，借助 CCS 开发环境下载到DSP/TMS320F2812 开发板上，完成嵌入式系统的实现。30781
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毕业论文关键词 永磁同步发电机 MPPT SVPWM MBD
Controller design for permanent magnet synchronous wind generator converter
Abstract As a clean and renewable energy, wind energy can effectively alleviate the energy crisis and recently receive by the world’s attention. The wind power industry has developed rapidly. Currently, the market mainstream of the wind turbine generator sets are doubly-fed induction wind power system and gearless permanent magnet direct-drive gearbox with synchronous wind power systems. In contrast, permanent magnet direct-drive wind power generation system has gradually become the focus of research because of its high efficiency, convenient manufacturing, good control effect and so on. In this paper, the permanent magnet synchronous wind power generator with back-to-back topology structure is taken as the research object. First of all, the paper establishes the mathematical model of the wind turbine, and explores the maximum power point tracking (MPPT) principle in detail; then, the mathematical model of permanent magnet synchronous generator is established under three-phase static coordinate system and two-phase rotating coordinate system, and the voltage space vector control technology (SVPWM) is introduced in detail. Finally, machine-side simulation model of the wind turbine is established in the MATLAB / Simulink environment.
The model based design (MBD) has been widely accepted after years of development. Matlab provides a platform for this new way of programming, which can convert Simulink simulation model to real-time C code through the real time workshop and Ti development tools. The code can be downloaded to the DSP/TMS320F2812 development board via CCS development environment and therefore finish the design of the embedded system.
Keywords permanent magnet synchronous generator, MPPT, SVPWM, MBD
目次
摘要I
Abstract..Ⅱ
目次Ⅲ
1绪论1
1.1课题研究背景及意义..1
1.2国内外风电发展现状..1
1.2.1世界风电发展状况1
1.2.2中国风电发展现状3
1.3风力发电系统简述.4
1.4永磁直驱式风力发电系统变流器的几种常用拓扑结构.6
1.4.1不可控整流器+晶闸管逆变器.6
1.4.2不可控整流器+三相电压型PWM逆变器..7
1.4.3不可控整流器+Boost电路+三相电压型PWM逆变器..7
1.4.4PWM整流器+三相电压型PWM逆变器..8
1.4.5多电平大功率变流器拓扑8
1.5本章小结8
2变速恒频风力发电机的最大功率追踪..10
2.1风力机的数学模型.10
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