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Simplified Model Predictive Current Control of Primary Permanent-Magnet Linear Motor Traction Systems for Subway Applications

Author

Listed:
  • Wei Wang

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Zhixiang Lu

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Wei Hua

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Zheng Wang

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Ming Cheng

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

Abstract

In this paper, a simplified model predictive current control (MPCC) is proposed for the primary permanent-magnet linear motor traction system in subway applications, which is fed by one two-level voltage-source-inverter (VSI). Based on the deadbeat concept, the reference voltage vector is calculated to eliminate the difference between the measured and reference currents in the next sampling period. Due to the discrete feature of the VSI, the reference voltage vector usually cannot be provided. Hence, the distance of a voltage vector is defined, and the voltage vector with the shortest distance is selected as the optimal one, which is called as the shortest distance principle in this paper. According to the shortest distance principle, the distribution of the reference voltage vector is divided into seven sectors, and the optimal voltage vector can be easily determined considering the location of the reference voltage vector. As a result, the computation cost is significantly reduced. However, the performances of MPCC are not affected by this simplification. The equivalence between the proposed and conventional MPCCs is proved in theory. All the theoretical analyses are verified by experimental results.

Suggested Citation

  • Wei Wang & Zhixiang Lu & Wei Hua & Zheng Wang & Ming Cheng, 2019. "Simplified Model Predictive Current Control of Primary Permanent-Magnet Linear Motor Traction Systems for Subway Applications," Energies, MDPI, vol. 12(21), pages 1-17, October.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:21:p:4144-:d:281807
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    Citations

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    Cited by:

    1. Karol Wróbel & Piotr Serkies & Krzysztof Szabat, 2020. "Model Predictive Base Direct Speed Control of Induction Motor Drive—Continuous and Finite Set Approaches," Energies, MDPI, vol. 13(5), pages 1-15, March.
    2. Wei Wang & Zhixiang Lu, 2020. "Analysis of Model Predictive Current-Controlled Permanent Magnet Synchronous Motor Drives with Inaccurate DC Bus Voltage Measurement," Energies, MDPI, vol. 13(2), pages 1-15, January.
    3. Lie Xia & Lianghui Xu & Qingbin Yang & Feng Yu & Shuangqing Zhang, 2020. "An MPC Scheme with Enhanced Active Voltage Vector Region for V2G Inverter," Energies, MDPI, vol. 13(6), pages 1-14, March.

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