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On Speed Control of a Permanent Magnet Synchronous Motor with Current Predictive Compensation

Author

Listed:
  • Meiling Tang

    (School of Electrical Engineering, Southwest Jiaotong University, Chendu 610031, Sichuan, China
    Department of Manufacturing and Transportation, Hangzhou Wanxiang Polytechnic College, Hangzhou 310023, Zhejiang, China)

  • Shengxian Zhuang

    (School of Electrical Engineering, Southwest Jiaotong University, Chendu 610031, Sichuan, China)

Abstract

In this study, a current model predictive controller (MPC) is designed for a permanent magnet synchronous motor (PMSM) where the speed of the motor can be regulated precisely. First, the mathematical model, the specifications, and the drive topology of the PMSM are introduced, followed by an elaboration of the design of the MPC. The MPC is then used to predict the current in a discrete-time calculation. The phase current at the next sampling step can be estimated to compensate the current errors, thereby modifying the three-phase currents of the motor. Next, Simulink modeling of the MPC algorithm is given, with three-phase current waveforms compared when the motor is operated under the designed MPC and a traditional vector control for PMSM. Finally, the speed responses are measured when the motor is controlled by traditional control methods and the MPC approach under varied speed references and loads. In comparison with traditional controllers, both the simulation and the experimental results suggest that the MPC for the PMSM can improve the speed-tracking performance of the motor and that this motor has a fast speed response and small steady-state errors under the rated load.

Suggested Citation

  • Meiling Tang & Shengxian Zhuang, 2018. "On Speed Control of a Permanent Magnet Synchronous Motor with Current Predictive Compensation," Energies, MDPI, vol. 12(1), pages 1-15, December.
    • Handle: RePEc:gam:jeners:v:12:y:2018:i:1:p:65-:d:193335
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