风力发电并网控制的变流器研究设计
- 格式：doc
- 大小：662.50 KB
- 文档页数：23
i 目 录
摘要................................................................................................................................. I
Abstract ......................................................................................................................... II
1 引言............................................................................................................................ 1
1.1 课题背景及意义.............................................................................................. 1
1.2 风力发电并网技术.......................................................................................... 2
1.2.1 交流异步发电机形式............................................................................ 2
1.2.2 交流同步发电机形式............................................................................ 3
1.2.3 交流双馈发电机形式............................................................................ 4
2 风电并网时对电网运行所产生的影响.................................................................... 4
2.1 对电力电量平衡的影响.................................................................................. 5
2.2 对电网潮流的影响.......................................................................................... 5
2.3 对电能质量的影响.......................................................................................... 6
2.4 对电压及功率的影响...................................................................................... 6
3 风力发电变流器的发展概述.................................................................................... 7
3.1 变流器控制技术发展...................................................................................... 7
3.2 变流器散热技术发展...................................................................................... 7
3.3 风力发电变流器发展趋势.............................................................................. 7
4 风电变流器的基本原理和数学模型........................................................................ 8
4.1 直驱式风电并网变流器拓扑结构分类.......................................................... 8
4.2 直驱式风电并网变流器系统特点.................................................................. 8
4.3 双馈式风力发电机基本原理.......................................................................... 8
4.4 双馈变流器的工作原理.................................................................................. 9
5 直驱式风电并网控制的变流器设计...................................................................... 10
5.1 风电变流器系统的要求................................................................................ 10
5.2 风电变流系统相关参数设计........................................................................ 10
5.2.1 主电路的设计...................................................................................... 10
5.2.2 直流母线电压的选取.......................................................................... 11
5.2.3 机侧整流器电感的选取...................................................................... 11
5.2.4 机侧整流器二极管的选取.................................................................. 12
5.2.5 直流母线侧滤波电容的选取.............................................................. 12
5.2.6 机侧整流器和网侧逆变器IGBT的选取 .......................................... 13
5.2.7 输出滤波器的设计.............................................................................. 13
6 直驱式风电系统变流器仿真实验.......................................................................... 15
6.1 风电并网变流器系统的仿真实验................................................................ 15
6.2 仿真实验结果分析........................................................................................ 18
参考文献...................................................................................................................... 19
致谢.............................................................................................................................. 20
ii Contents
Abstract ......................................................................................................................... II
1 Introduction ................................................................................................................. 1
1.1 Subject background and significance ................................................................ 1
1.2 Wind power grid connected technology ........................................................... 2
1.2.1 AC asynchronous generator form ........................................................... 2
1.2.2 AC synchronous generator form ............................................................. 3
1.2.3 AC doubly fed generator form ................................................................ 4
2 The influence of the wind power grid operation on the operation of the power
network .......................................................................................................................... 4
