双馈感应变速恒频风力发电机控制系统研究

Doubly Fed Induction Variable-speed Constant-frequency Generator for Wind Turbines System

结合双 PWM变换器、双馈感应发电机和矢量控制技术的优点 ,根据双馈感应发电机的数学模型 ,建立了双馈感应变速恒频风力发电机矢量变换控制系统框图 ,并对系统进行了实验研究 ,获得了良好的控制性能 ,得出该系统能够在变风速的情况下最大程度地获得风能 。

The paper introduces a viable alternative to adjust speed over a wide range at minimal cost using doubly fed induction generator for wind turbines. Combined with the advantaged of doubly PWM convertor, doubly fed induction generator and vector control. Vector controller block diagram for DFIG has been presented by DFIG mathematics model. The simulation and experimental results indicate that this system has many advantages as compared to traditional vector control system. The system can capture maximum wind power at optimal speed from wind and permits active and reactive power to regulate independently.