Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Model-free predictive current control for IPMSMs with multiple current difference updating technique

  • Wu, Xiaoxin (School of Electrical Engineering, Nantong University) ;
  • Zhu, Zhihao (School of Electrical Engineering, Nantong University) ;
  • Liu, Xing (School of Electrical Engineering, Nantong University) ;
  • Yu, Feng (School of Electrical Engineering, Nantong University)
  • Received : 2020.09.08
  • Accepted : 2020.12.21
  • Published : 2021.03.20
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Abstract

This paper proposes a model-free predictive current control (MFPCC) for interior permanent magnet synchronous motors (IPMSMs) with a multiple current difference updating (MCDU) technique. Firstly, to improve robustness against machine parameter variations and reduce the computational burden, current difference-based prediction that only requires accumulation operation is implemented, which avoids the model-based complex calculations in traditional model predictive current control (MPCC). Secondly, a MCDU technique is conducted with the characteristic of updating the current differences associated with voltage vectors in opposite directions. Thus, the updating frequency of the current difference can be significantly increased. Finally, the effectiveness of the proposed method is verified by simulation and experimental results.

Keywords

Acknowledgement

This work was supported by the National Natural Science Foundation of China 51807098.

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