Robust Model Predictive Direct Speed Control for SPMSM Drives Based on Full Parameter Disturbances and Load Observer

• Published in: IEEE transactions on power electronics Vol. 35; no. 8; pp. 8361 - 8373
• Main Authors: Zhang, Xiaoguang, Cheng, Yu, Zhao, Zhihao, He, Yikang
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.08.2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Computer simulation; Cost function; Couplings; Direct speed control (DSC); Disturbances; Electric potential; Load modeling; Mathematical model; Mathematical models; Mechanical properties; Observers; Parameter estimation; parameter sensitivity; Permanent magnets; Predictive control; Predictive models; Robust control; sliding-model observer (SMO); Speed control; Synchronous motors; Torque; Voltage; Voltage control
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2019.2962857

A robust model-predictive direct-speed control (MP-DSC) for the surface-mounted permanent-magnet synchronous motor (SPMSM) drives is proposed in this article. First, MP-DSC based on direct voltage-selection cost function is introduced. Then, a sliding-model full parameter disturbances and load observer (FPLO) that can simultaneously estimate electrical parameter disturbances, mechanical parameter disturbances, voltage reconstruction error, motor speed, and load torque is proposed. Thus, the load torque observer in the conventional MP-DSC method is eliminated. Then, the MP-DSC+FPLO method is presented, in which the output of the proposed FPLO is used to compensate for the predicted reference voltage error. The simulation and experimental results show that the proposed method is robust to the disturbance of parameters and load.