摘要
双馈电机的结构类似于绕线式感应电机，其定子绕组也由具有固定频率的对称三相电源激励，所不同的是其转子绕组由可调节频率的三相电源激励，一般采用交-交变频器或交-直-交变频器提供低频电源。本文在推导双馈电机在静止参考坐标系中的数学模型的基础上，应用矢量控制技术建立了双馈电机电流闭环控制。通过仿真获取该电机的电流、速度和磁通曲线，以此来验证所建立的双馈电机模型的正确性，为双馈电机的实际应用建立了理论基础。
The structure of DFIM （Doubly-fed Induction Machine） is similar to Wound Rotor Induction Motor （WRIM）, the stator winding of DFIM is also excited by the symmetrical three-phase sources with the fixed frequency, unlike WRIM, the difference is that its rotor winding is excited by the three-phase sources with the adjustable frequency, and generally, it is supplied by adopting AC- AC Frequency Converter or AC-DC-AC Frequency Converter. In this paper, on the basis of deducing the mathematical model of DFIM in stationary reference coordinate system, the current closed-loop control of DFIM has been established by using vector control technology. The curves of current, speed and flux of the motor are obtained by means of the simulation to verify the correctness of the created DFIM model with them, which has set up the theoretical foundation for the practical application of DFIM.
出处
《自动化信息》
2011年第9期36-38,共3页
Automation Information
关键词
模型
双馈电机
PI控制
矢量控制
Model
Doubly-fed Induction Machine （DFIM）
PI Control
Vector Control
