摘要
设计一套30kW变速恒频双馈异步风力发电机励磁控制实验系统,采用背靠背变流器作为双馈异步电机的励磁源。分析了基于旋转坐标系统下的双馈异步电机的数学模型,采用定子磁链定向方式的控制策略,研究了在电网发生电压跌落时的危害和应对措施。实验结果表明,风力发电机控制性能良好,而在电网低电压故障时变流器的有效控制为保护双馈异步电机和支撑电网起到了一定作用。
30 kW VSCF doubly fed induction wind generator excitation control experimental system was designed,and back to back converter is used as DFIG excitation source. Based on the analysis of rotating coordinate system under the doubly fed induction generator mathematical model, using the stator flux-oriented mode, the hazards and response measures while voltage drop happens were pointed. The experimental results show that the control performance of wind generator is good, the converter control are also effective for the DFIG protection and grid supporting while voltage drop happens.
出处
《电气传动》
北大核心
2012年第2期17-21,共5页
Electric Drive
关键词
交流励磁
变速恒频
矢量控制
低电压穿越
AC excitation
variable speed constant frequency （VSCF）
vector control
low voltage ride- through
