双重励磁绕线转子异步发电机基本原理浅析

双重励磁绕线转子异步发电机系统，是一种集成了大功率变频装置、旋转发电机和现代控制系统的机电一体化发电设备，在风力发电行业内得到广泛应用。文章从DFIG的等价电路方程式出发，分析了DFIG的空间矢量图和T型等效电路，给出了表示功率流向的功率等效电路，并由此导出双向变频器功率容量设计的简略计算方法。

Basic Principle of the Double Fed Induction Generator and the Simple Explanation of It

The double-fed induction generator is a kind of mechanical-electrical integration equipment composed with large-size frequency inverter, rotating electrical machine and modern controlling system, which has been widely used in the wind power generation industry. Started with the equivalent equation, the space vector diagram of DFIG ＆ T equivalent circuit were analyzed while the power equivalent circuit to demonstrate the power flow direction was put forward.