Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Optimization of sideband electromagnetic vibration and comprehensive control performance of PMSMs based on improved vector control

  • Shichang Liu (School of Electrical Engineering, Shanghai Dianji University) ;
  • Quanfeng Li (School of Electrical Engineering, Shanghai Dianji University) ;
  • Xuanyu Hong (School of Electrical Engineering, Shanghai Dianji University) ;
  • Yahui Zuo (School of Electrical Engineering, Shanghai Dianji University) ;
  • Dingjiang Zou (School of Electrical Engineering, Shanghai Dianji University)
  • Received : 2022.06.11
  • Accepted : 2022.09.15
  • Published : 2023.02.20
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Abstract

To effectively suppress the electromagnetic vibration generated by a permanent magnet motor at different frequency bands and to further improve the comprehensive control performance of the system, a new vector control strategy is proposed in this paper. The speed controller and current controller of the traditional vector control system of a permanent magnet synchronous motor (PMSM) are improved by means of an active disturbance rejection controller (ADRC) and a super-twisting sliding mode controller (STSMC). At the same time, random frequency space pulse width modulation (RFSVPWM) based on a periodic function is proposed to replace the traditional SVPWM. First, the expression of the radial electromagnetic force wave generated by motor supply current harmonics in low and medium frequency as well as high-frequency sideband is deduced by an analytical method, and the reason for the generation of the new radial electromagnetic force based on PI vector control is determined. Second, the ADRC, STSMC, and RFSVPWM are designed to suppress the power supply current harmonics and radial electromagnetic force components that greatly contribute to the electromagnetic vibration of the motor in different frequency bands. Finally, the superiority of the improved PMSM vector control system in terms of the comprehensive control performance and electromagnetic vibration is verified by multi-physics coupled finite element simulations.

Keywords

Acknowledgement

This research was supported by the funding of Shanghai Science Technology Plan Project (22PJ1404300).

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