高速永磁同步电机模型参考自适应转速观测

Speed Observation for High-speed Permanent Magnet Synchronous Motor with Model Reference Adaptive System

针对高速永磁同步电机(HS-PMSM)无位置传感器矢量控制,提出一种基于模型参考自适应(MRAS)的电机转速观测方法。该方法将HS-PMSM作为参考模型,d,q轴定子电流数学模型作为可调模型。利用模型输出转速偏差,借助Popov超稳定性理论构造了一种转速观测自适应律,实现了HS-PMSM转速的准确观测。最后,对基于MRAS的HS-PMSM无位置传感器矢量控制系统进行了仿真和实验验证。结果表明,所提出的方法具有良好的动态响应和稳态响应,转速观测精度高,鲁棒性强,无位置传感器HS-PMSM运行良好。

For sensorless vector control of high-speed permanent magnet synchronous motor(HS-PMSM),a speed observation method based on model reference adaptive system(MRAS)was proposed.The HS-PMSM was used as the reference model.Meanwhile,the d,q axis stator current mathematical model was used as the adjustable model.According to the output speed deviation of the two models and the Popov superstability theory,an adaptive law of speed observation was constructed,and the accurate speed observation of the HS-PMSM was realized.Finally,the simulation and experiment of the sensorless vector control system with HS-PMSM based on MRAS was established.The results show that the proposed method can realize good dynamic and steady-state response,high accuracy observation of the rotor speed robustly,and realize the sensorless operation of the HS-PMSM well.