An Improved Model Reference Adaptive Control for high-speed PMSMs

For high-speed PMSMs, the sensorless control suffers from poor dynamic performance due to the coupling of current loops. An improved model reference adaptive system(IMRAS) sensorless control with complex vector decoupling control(CVDC) is proposed. Based on the traditional MRAS, the CVDC method, which add the estimated speed information to the PI regulator of complex vector, is introduced to improve the dynamic response performance of current loop. The simulation results prove the accuracy of estimated position and speed. Furthermore, the system demonstrates good dynamic response performance and strong robustness.