摘要
介绍了变速恒频双馈风力发电的基本原理与控制设计,建立包括风力机、双脉宽调制(PWM)功率变换器、双馈发电机在内的风力发电系统。着重以转子侧变换器为研究对象,分析了其实现最大风能追踪,有功功率、无功功率解耦的过程。基于该过程推导数学关系式,建立功率外环、转子电流内环控制的定子磁链定向控制模型,并通过1.5 MW双馈风力发电仿真模型验证了该矢量控制方法在双馈风力发电系统的适用性。
The basic theory of double fed induction generator（DFIG） together with its common engineering design method was presented,and a wind power system includes wind turbine,back-to-back PWM voltage-source converters,DFIG and power gridwas createed.Aiming to obtain excellent properties of rotor-side converter,the vector control scheme was deduced which enable optimal rotational speed tracking for maximum wind energy,decoupled control of active power and reactive power,a traditional stator-flux-oriented mechanism including power outer-loop and rotor current inner-loop was constructed based on mathematical models.The control scheme was verified by a 1 500 kW DFIG simulation model.
出处
《电机与控制应用》
北大核心
2011年第6期57-61,65,共6页
Electric machines & control application
基金
中央高校基本科研业务费专项资金资助(SWJTU09ZT13)
关键词
双馈发电机
定子磁链定向
矢量控制
变速恒频
double fed induction generator（DFIG）
stator flux oriented
vector control
variable speed constant frequency（VSCF）
