基于全维观测器的无速度传感器异步电机控制

Speed Sensorless Control of Induction Motor Based on Full-order Observer

提出了一种模型参考自适应观测器,用于异步电机无速度传感器矢量控制系统的转速辨识。该方法将电机矢量控制与模型参考自适应系统(MRAS)相整合,异步电机作为参考模型,而全阶观测器为可调模型,利用两模型输出的误差构造了一个自适应律。理论分析和仿真结果表明,该转速辨识方法具有较强的鲁棒性和令人满意的动静态性能。

This paper proposes a model reference adaptive system（MRAS） observer for speed identification in a sensorless vector controlled induction motor drive system. It selects induction motor as reference model and full-order rotor speed observer as adjustable model by combining MRAS with vector control to formulate a self-adaptive Algorithm according to the output errors of the two models. Theoretical analysis and simulation results show that the proposed strategy has stronger robustness and satisfactory performance.