Robust Predictive Torque Control of N*3-phase PMSM for High Power Traction Application

Gongping Wu, Sheng Huang*, Qiuwei Wu, Fei Rong, Changfan Zhang, Wu Liao

*Corresponding author for this work

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Abstract

The permanent magnet synchronous motor (PMSM) has become a core component of electromechanical energy conversion in the modern industrial field. In order to expand the application of the PMSM in the field of high power traction, a robust predictive torque control (R-PTC) strategy for the N-segment three-phase PMSM (N*3-phase PMSM) is proposed in this paper. Firstly, the output characteristics of the N*3-phase PMSM are illustrated with the finite element analysis method, and the mathematical model is established. Then, the six-segment three-phase PMSM predictive control system driven by six parallel inverters is designed to generate the required torque. Further, the influence of the parameter mismatch on the predicted torque and stator flux is taken into consideration based on the conventional predictive torque control (PTC). Finally, a novel R-PTC method with the proportional controller is developed for the N*3-phase PMSM, which can effectively improve accuracy and robustness of predictive control performance under parameters mismatch. Simulation and experimental results verify that, compared with the conventional PTC, the proposed R-PTC method can make the predicted stator flux and torque value accurately track its reference values while achieving lower stator flux and torque ripple.
Original languageEnglish
JournalIEEE Transactions on Power Electronics
VolumePP
Issue number99
Number of pages12
ISSN0885-8993
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • N-segment three-phase PMSM
  • Multiphase
  • Predictive torque control
  • High power traction
  • Parameters mismatch

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