Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Slip prevention algorithm for dual-rotor PM synchronous motor

  • Yong‑Seok Ahn (R&D Institute, Hyundai Elevator) ;
  • Jin‑Young Kim (Department of Electronic Engineering, Korea National University of Transportation) ;
  • Ki‑Young Song (Department of Electric Equipment R&D, VCTech) ;
  • Kwan‑Yuhl Cho (Department of Electronic Engineering, Korea National University of Transportation) ;
  • Hag‑Wone Kim (Department of Electronic Engineering, Korea National University of Transportation) ;
  • Seong‑Hoon Kim (Department of Electronic Engineering, Korea National University of Transportation)
  • Received : 2023.10.24
  • Accepted : 2023.12.15
  • Published : 2024.03.20
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Abstract

This study proposes a slip prevention algorithm with a load angle controller to prevent the slip phenomenon in dual-rotor PM synchronous motor (DR-PMSM) drives. A DR-PMSM employs inherent magnetic coupling between the inner and outer rotors for power transmission. This structure may lead to slip and desynchronization between the inner and outer rotors at sudden load variations; therefore, a slip prevention algorithm is necessary to enhance its reliability. Conventional passive slip prevention algorithms may induce load angle oscillation around the critical load angle, which will result in desynchronization between the inner and outer rotors. The PI load angle controller proposed in this study can prevent slip and load angle oscillation near the critical angle. The effectiveness of the proposed slip prevention algorithm is verified through mathematical modeling and simulation with MATLAB/Simulink, as well as through an experiment on a horse-power DR-PMSM.

Keywords

Acknowledgement

This work was supported by the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (RS-2021-KA163329).

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