Zynq Implemented Luenberger Disturbance Observer Based Predictive Control Scheme for PMSM Drives

• Published in: IEEE transactions on power electronics Vol. 35; no. 2; pp. 1770 - 1778
• Main Authors: He, Long, Wang, Fengxiang, Wang, Junxiao, Rodriguez, Jose
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.02.2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Control systems design; Current control; Deadbeat-based predictive current control (DPCC); Disturbance observers; Field programmable gate arrays; Luenberger disturbance observer; Mathematical model; Mathematical models; Parallel processing; Parameter robustness; permanent magnet synchronous machine (PMSM); Permanent magnets; Predictive control; Stators; Synchronous motors; Velocity control; Vivado High-Level Synthesis (HLS); Zynq SoC
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2019.2920439

A Luenberger disturbance observer based control scheme for surface mounted permanent magnet synchronous motor (SPMSM) is proposed in this paper. First, an extended SPMSM model is given by considering the external disturbances and parameter mismatches. Second, a Luenberger observer is introduced to estimate the lumped disturbances in the speed and current loops, respectively. Third, based on the observed disturbances, a speed controller is designed, which is proved to be stable. Finally, an improved deadbeat-based predictive current control (DPCC) based on the estimated disturbances and the new SPMSM model is designed to control the current loop. The proposed method is implemented on a Xilinx Zynq SoC XC7Z020-CLG484-1 and field programmable gate array (FPGA) implementations of the improved DPCC and conventional DPCC are compared and analyzed in detail in terms of area utilization and time consumption. Although the execution time of both methods is very short, the improved DPCC takes less time than the conventional DPCC due to the parallel processing capabilities of FPGAs. The experimental results verify that the proposed method has good dynamic performance, load disturbance suppression performance, and parameter robustness.