Title :
Full order state observer of stator flux for permanent magnet synchronous motor based on parameter adaptive identification
Author :
Xin Luo ; Anwen Shen ; Wenchao Cao ; Wenpei Rao
Author_Institution :
Dept. of Control Sci. & Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
This paper presents a full order state observer of stator flux based on parameter adaptive identification for the direct torque control (DTC) system of surface permanent magnet synchronous motor (SPMSM) drive, in order to improve stator flux observation under motor parameter variation. The full order state observer of stator flux is established on the fixed a-β coordinate, and another adaptive stator current observer is designed on the synchronization d-q coordinate for adaptive identification of the motor parameters, which are used to update the matrixes of stator flux observer and eliminate the effect of motor parameter variation. The adaptive schemes of motor parameters and the observer gains are design based on Lyapunov theory. The simulation results prove that the proposed method can effectively identify the motor parameters, enhance the accuracy and robustness of stator flux observation and improve the performance of direct torque control system.
Keywords :
Lyapunov methods; machine control; observers; parameter estimation; permanent magnet motors; stators; synchronisation; synchronous motors; torque control; DTC system; Lyapunov theory; SPMSMdrive; direct torque control; direct torque control system; fixed a-β coordinate; full order state observer; motor parameter; motor parameters; parameter adaptive identification; stator flux observation; stator flux observer; surface permanent magnet synchronous motor; synchronization adaptive identification; synchronization d-q coordinate; Mathematical model; Observers; Permanent magnet motors; Stators; Synchronous motors; Torque; Vectors; Permanent magnet synchronous motor; adaptive observer; direct torque control; parameter identification; stator flux observation;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2013 8th IEEE Conference on
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4673-6320-4
DOI :
10.1109/ICIEA.2013.6566597