双馈风力发电系统的PWM变流技术

作者：张奇伟，陈国定，赵国炳 日期：2009-08-18/span> 浏览：3991 查看PDF文档

双馈风力发电系统的PWM变流技术

张奇伟，陈国定，赵国炳
（浙江工业大学 信息工程学院，浙江 杭州 310014）

摘要：为了研究双馈风力发电系统的双脉宽调制（PWM）变流器的控制策略，分析了双PWM变流器的主电路拓扑，建立了基于三相静止坐标系和两相同步旋转坐标系的数学模型，给出了变流器的电压矢量控制方案。研究了电压空间矢量脉宽调制（SWPWM）技术，并利用逻辑函数的卡诺图化简法来判断扇区。在Matlab/Simulink环境下对其进行了仿真研究，其结果表明双PWM变流器是理想的励磁变频电源。
关键词：双脉宽调制变流器；矢量控制；逻辑函数化简；空间矢量脉宽调制
中图分类号：TM614文献标识码：A文章编号：1001-4551(2009)08-0093-04

PWM converter technology in windpower doublyfed induction generator system
ZHANG Qiwei, CHEN Guoding, ZHAO Guobing
(Collegle of Information Engineering, Zhejiang University of Technology, Hangzhou 310014, China)
Abstract: Aiming at studying the control strategy of backtoback pulse width modulation(PWM) converter in windpower doublyfed induction generator system, the topological structure of backtoback PWM was analyzed, and mathematical models of the converter were created based on the threephase static coordinate and the twophase synchronous rotational coordinate. The principle of the space vector pulse width modulation(SVPWM) was studied. And the sectors were determined by using Karnaugh map simplification method of logic function. Simulation was carried out under the environment of Matlab/Simulink. The results verify that the threephase VSR can provide sinusoidal input current with unity power factor.
Key words: backtoback pulse width modulation(PWM) converter; vector control; logic function; space vector pulse width modulation(SVPWM)
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