This article presents a new rotor speed observer for the sensorless control of stand-alone brushless doubly fed induction generators based on the control winding flux model reference adaptive system structure. The observer is incorporated in the control strategy for regulating the terminal voltage magnitude and frequency under the different operating conditions. The capability of the proposed observer and control method is demonstrated by comprehensive simulation results and verified by experiments. As shown, without using physical speed sensors, the sensorless control algorithm incorporating the proposed speed observer can effectively maintain the amplitude and frequency of power winding voltage constant at different rotor speeds and under different conditions of load and machine parameter, e.g., inductance and/or resistance, variations.

中文翻译：

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基于控制绕组磁通的 MRAS 速度观测器，用于独立 BDFIG 的无传感器控制

本文提出了一种新的转子速度观测器，用于基于控制绕组磁通模型参考自适应系统结构的独立无刷双馈感应发电机的无传感器控制。观测器被纳入控制策略中，用于在不同运行条件下调节端电压幅值和频率。综合仿真结果证明了所提出的观测器和控制方法的能力，并通过实验进行了验证。如图所示，在不使用物理速度传感器的情况下，结合所提出的速度观测器的无传感器控制算法可以在不同的转子速度和不同的负载和机器参数条件下，例如电感和/或阻力，变化。