摘要为了解决全球能源危机以及环境污染问题，风能作为一种清洁的可再生新能源，已经成为当今界能源产业的重要方向之一。近几年内，风力发电技术发展迅速，其中，变速恒频风力发电机组类型也趋于稳定，目前市场上的主流机型是有刷双馈和永磁直驱。论文屮的风电系统通过变流电路及其先进的控制策略，实现在额定风速范围内跟踪最佳风能。近年来，直驱式永磁风力同步发电机系统的应用越来越广泛。以直驱式永磁风力同步发电机为研究对象，在掌握风力机特性及其数学模型以及分析PMSM 数学模型的基础上,研究分析了一种PMSM控制系统仿真建模的新方法,将该方法应用于Matlab/ Simulink 环境下PMSM 模型的设计,采用矢量控制与经典的速度、电流双闭环控制方法对该建模方法进行了测试。研究分析了一些系统控制策略，如最大风能捕获，跟踪最大功率，变桨距控制以及abc/dq的矢量变换。在此基础上，搭建了系统的仿真模型。仿真实验结果表明:波形符合理论分析,系统能平稳运行,具有较好的静、动态特性.67343

毕业论文关键词：  直驱永磁同步发电机  矢量控制  最大风能捕获   MATLAB/Simulink

毕业设计说明书（论文）外文摘要

Title    Direct-drive Permanent Magnet Wind Power Generation System Control Scheme                                    

Abstract

Wind energy is a kind of clean and renewable energy. Wind power becomes one of the most important direction of energy industry in the world in order to solve the global energy crisis and environmental pollution problems. In recent years, wind power technology develops rapidly. VSCF wind turbine types have stabilized. Mainstream models of the current market are brush doubly-fed and direct drive permanent magnet. The wind power system in this paper achieves tracking the best wind power in the range of the rated wind speed by the converter circuit and its advanced control strategies. In recent years, the application of direct-drive permanent magnet synchronous wind power generation system is wider and wider.

To direct-drive permanent magnet wind power generator as the research object, to master the basic characteristics of wind turbine and its mathematical model and analysis of PMSM model, presents a new method for modeling and Simulation of PMSM control system, design and application of the method in PMSM model of Matlab under the environment of Simulink, adopts the vector control with classic speed, and current double closed-loop control method for the modeling methods were tested. The control strategy was proposed for some systems, such as the maximum power point tracking, variable pitch control and abc/dq vector transformation. On this basis, the system's simulation model was built. The simulation results show that: the theoretical analysis accords with the waveform, the system can run smoothly, has good static, dynamic characteristics.

Keywords : Direct-drive Permanent Magnet Synchronous Generator  Vector Control  Maximum Wind Energy Capture   MATLAB/Simulink

目次

1    绪论 1

1.1  选题意义 1

1.2  风电控制技术发展的国内外现状 1

1.3  本文主要研究内容 6

2    直驱式永磁同步发电机系统 8

2.1  概述 8

2.2  风速特性及其数学模型 9

2.3  风力机的数学模型