摘要
介绍了双馈电机转速和功率独立调节的基本原理,利用定子磁链定向对其进行矢量控制。建立了双馈发电机的数学模型并对其在风速发生变化时进行仿真。研究了双馈风电机组在电网故障时的运行情况,分析了风力发电机组低电压穿越技术。双馈风电机组只有具有低电压穿越能力,才能保证电网出现短暂故障时还能保持并网运行。
Introduction was made to the basic principle of doubly-fed generator’s rotary speed and independent regulation of power. Its stator flux orientation was used to carry out vector control. A mathematical model of doubly-fed generating set was established and its simulation was carried out when the wind speed was changing. Research was made on the operation situation of doubly-fed generating set at power network failure. Analysis was made to the low-voltage ride-through technology for wind generating set. Only if the doubly-fed generating set is in possession of the low-voltage ride-through technology, the wind generating set can keep connected grid operating at transient power network failure.
出处
《电工电气》
2011年第4期22-25,共4页
Electrotechnics Electric
基金
内蒙古自治区科技创新引导奖励资金项目(20071912)
关键词
双馈电机
定子磁链定向
矢量控制
低电压穿越
doub1y-fed generator
stator flux linkage
vector control
low-voltage ride-through
