摘要
介绍了双馈风力发电系统负载并网的控制策略及实现方法。分析了双馈电机负载并网的基本原理,采用按电网电压定向的负载并网控制方案。通过功率、电流双闭环的稳态控制策略,研究分析双馈电机定子侧、负载与电网三者之间的功率流向关系。构建了基于英飞凌XC2785单片机的试验平台。试验结果表明:负载并网控制能很好地实现定子电压对电网电压的快速跟随,并网瞬间冲击电流几乎为零,实现了发电系统的柔性并网。
The control strategy and implementation methods for the with-load grid connection of double fed induction generator （DFIG） wind power generation system were introduced. According to the analysis of the fundamentals of the with-load grid connection, the with-load grid connected control strategy was made by the grid voltage orientation vector control. The power flow relationships among the stator side, load and grid side were analysed by the steady-state control strategy. The experimental platform based on Infineon XC2785 SCM was constructed. The experimental results show that the with-load grid connection control can realize the fast tracking between the stator voltage and the grid voltage while the impulse current is almost zero in the grid connection, thus the flexiable grid connection of DFIG is realized.
出处
《电机与控制应用》
北大核心
2014年第3期32-35,41,共5页
Electric machines & control application
关键词
双馈感应电机
负载并网
电网电压定向
冲击电流
double fed induction generator
with-load grid connection
grid voltage orientation
impulsecurrent
