基于模型参考自适应滑模观测器的DFIG无速度传感器控制

Speed sensorless control of DFIG based on MRAS-SMO

论文为双馈感应发电机提出一种基于模型参考自适应滑模观测器观测转子电流的无速度传感器控制策略。以电机本体作为参考模型,在双馈感应发电机d-q坐标模型的基础上构建转子电流估算模型。依据实转子实际电流和转子估算的电流之间的偏差,通过模型参考自适应滑模观测器来估计电机转子位置和转速。该控制策略对电机参数变化具有很强的鲁棒性和快速性。最后搭建了双馈风力发电仿真平台,对所提的控制策略进行验证。仿真结果验证了所提方案可行性和正确性。

The article proposes a rotor current sensorless control strategy of the doubly-fed induction generator based on model reference adaptive sliding mode observer. Based on the d-q coordinate model of doubly-fed induction generator, the motor is regarded as the reference model to construct the rotor current estimate model.According to the deviation between the real current and estimated current of the rotor, the position and speed of the motor rotor can be estimated through the model reference adaptive sliding mode observer. The control strategy have very strong abilities of robustness and rapidity against the variation of motor parameters. Finally, build the doubly-fed wind power generation simulation platform, to verify the proposed control strategy. The simulation results verify the correctness and feasibility of the proposed scheme.