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Three-Level NPC Inverter-Fed IM Drives under PTC, Minimizing the Involved Voltage Vectors and Balancing the DC Bus Capacitor Voltages

Author

Listed:
  • Wiem Zouari

    (Laboratory of Renewable Energies and Electric Vehicles (RELEV), University of Sfax, ENIS, P.O. Box 1173, Sfax 3038, Tunisia)

  • Imen Nouira El Badsi

    (Laboratory of Renewable Energies and Electric Vehicles (RELEV), University of Sfax, ENIS, P.O. Box 1173, Sfax 3038, Tunisia)

  • Bassem El Badsi

    (Laboratory of Renewable Energies and Electric Vehicles (RELEV), University of Sfax, ENIS, P.O. Box 1173, Sfax 3038, Tunisia)

  • Ahmed Masmoudi

    (Laboratory of Renewable Energies and Electric Vehicles (RELEV), University of Sfax, ENIS, P.O. Box 1173, Sfax 3038, Tunisia)

Abstract

The paper presents a comparative study of the steady-state and transient behaviors of three-level neutral-point clamped (3L-NPC) inverter-fed induction motor (IM) drives under the control of three predictive torque control (PTC) schemes: the conventional one (C-PTC) and two new strategies involving selected stator voltage vectors (SVs), namely: (SV-PTC1) and (SV-PTC2). Compared to the C-PTC, the latter enable a reduction of the number of voltage vectors as well as the weighting factors. The introduced PTCs mainly differ by the cost function, which is more simple in the case of SV-PTC2. However, SV-PTC1 allows a systematic clamping of each stator phase to the DC bus voltage, at a low level of 60 degrees, and a high level at 60 degrees per cycle, while such a clamping is arbitrary in the case of SV-PTC2. Simulations prove the higher performances of the introduced SV-PTCs over the C-PTC ones, in terms of the reduction of the current distortion and of the torque ripple. Simulation results were validated by the experiments.

Suggested Citation

  • Wiem Zouari & Imen Nouira El Badsi & Bassem El Badsi & Ahmed Masmoudi, 2022. "Three-Level NPC Inverter-Fed IM Drives under PTC, Minimizing the Involved Voltage Vectors and Balancing the DC Bus Capacitor Voltages," Sustainability, MDPI, vol. 14(20), pages 1-22, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:20:p:13522-:d:947306
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