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Improved Direct Power Control of Doubly Fed Induction Generator Without Phase-Locked Loop

机译：改进了双馈诱导发电机的直接电源控制，无锁相环

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摘要

Direct power control is widely used in renewable power generation, due to the advantages of simple implementation and fast dynamic response. This paper proposes an improved direct power control of doubly fed induction generator (DFIG) without phase-locked loop (PLL), which is implemented in the stationary reference frame. In order to deal with the time-varying voltage matrix-related dynamics of active and reactive powers for a DFIG in the stationary reference frame, the modulated active and reactive voltage are introduced. By this means, the time-varying voltage matrix-related dynamics of DFIG active and reactive powers are changed into a constant coefficient-related equation, thereby resulting in a simpler implementation. Meanwhile, the modulated rotor voltage can be obtained from the modulated active and reactive voltages based on DFIG rotor position. Then, a linear controller can be introduced to achieve the decoupling regulation and fast tracking of active and reactive powers. Finally, the experimental results are provided to confirm the effectiveness and frequency adaptability of the proposed method.
机译：直接电源控制广泛应用于可再生能源，由于简单的实现和快速动态响应的优点。本文提出了一种改进的双馈感应发生器（DFIG）的直接功率控制而不具有锁相环（PLL），其在静止参考帧中实现。为了处理静止参考帧中的DFIG的有源和无功功率的时变电压矩阵相关动态，引入了调制的主动和无功电压。通过这种方式，DFIG主动和无功功率的时变电压矩阵相关动态被改变为恒定系数相关的等式，从而实现更简单的实现。同时，可以基于DFIG转子位置从调制的主动和反应电压获得调制的转子电压。然后，可以引入线性控制器以实现积极和无功功率的去耦调节和快速跟踪。最后，提供了实验结果以确认所提出的方法的有效性和频率适应性。

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