Samer Saleh Hakami and Kyo-Beum Lee, "Modified Predictive Torque Control for Balancing Three-Level NPC Inverter-Fed PMSM Drives," Journal of Power Electronics, vol. 24, pp. 586-597, Apr. 2024. -SCIE > Paper

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International Journals Samer Saleh Hakami and Kyo-Beum Lee, "Modified Predictive Torque Control for Balancing Three-Level NPC Inverter-Fed PMSM Drives," Journal of Power Electronics, vol. 24, pp. 586-597, Apr. 2024. -SCIE

2024

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The conventional approach of predictive torque control (PTC) is frequently employed in the control of permanent magnet synchronous motors (PMSMs) driven by a two-level voltage source inverter (2L-VSI). This technique offers low complexity and reduced torque ripples in the low-speed region by

minimizing the duty-cycle of the applied voltage vector (VV) compared to complete utilization of dc-link voltage. However, it has its limitations,

including slow torque dynamics, restricted modulation index (MI), and an inability to select zero VV, which would be useful for minimizing ripples in

multilevel VSIs drives. Additionally, it can lead to an unbalanced dc-link due to the restricted VV selection, especially at low MI. To address these

limitations, a modified PTC based on space vector pulse width modulation (SVPWM) approach is proposed for three-level neutral-point-clamped

(3L-NPC) VSI-fed PMSM. The proposed 3L-PTC method is able to reduce torque and flux ripples at low MI, improves dynamic response, and maintains a balanced dc-link, regardless of operating conditions. Intensive numerical and experimental evaluations are carried out to validate the effectiveness of the proposed 3L-PTC.

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