目录
1 绪论........................................................................................................................................................................1
1.1 风力发电简介.................................................................................................................................................1
1.2 风力发电的现状.............................................................................................................................................2
1.3 风力发电系统简介.........................................................................................................................................4
1.3.1
恒速恒频发电系统
..................................................................................................................................5
1.3.2
变速恒频发电系统
..................................................................................................................................6
2 双馈式风力发电机组............................................................................................................................................9
2.1 双馈式风力发电机组原理.............................................................................................................................9
2.2 双馈式风力发电机组的特点.......................................................................................................................14
3 双馈变流器的设计..............................................................................................................................................16
3.1 双馈变流器的工作原理...............................................................................................................................16
3.2 双馈变流器的组成.......................................................................................................................................17
3.2.1
并网开关
................................................................................................................................................18
3.2.2
双
PWM
变换器
.....................................................................................................................................21
3.2.3
预充电回路
............................................................................................................................................31
3.2.4
滤波电路
................................................................................................................................................33
3.2.5
低电压穿越电路
....................................................................................................................................38
3.3 总结...............................................................................................................................................................40
4 变流器功率单元驱动电路的设计......................................................................................................................42
4.1 驱动电路概述...............................................................................................................................................42
4.2 驱动电路的性能参数...................................................................................................................................42
4.2.1
基本工作原理
........................................................................................................................................42
4.2.2
驱动电路的功能
....................................................................................................................................44
4.3 驱动电路的设计...........................................................................................................................................46
4.3.1
驱动芯片的选取
....................................................................................................................................46
4.3.2
外围电路的设计
....................................................................................................................................49
4.4 总结...............................................................................................................................................................53
5 实验结果与分析..................................................................................................................................................54
5.1 概述...............................................................................................................................................................54
5.2 满功率试验波形记录与分析.......................................................................................................................56
6 总结与展望..........................................................................................................................................................61
参考文献.................................................................................................................................................................62
附录 A1.5MW 双馈变流器主电路........................................................................................................................64
I / 78