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This paper presents a predictive torque control (PTC) strategy for a three-level simplified neutral point clamped (3L-SNPC) inverter-fed interior permanent magnet synchronous motor drive. The motor torque is predicted from the stator currents and motor speed information. Then, the most appropriate voltage vector that minimizes the predetermined cost function and hence, the torque error is selected...
Compared to the three-level neutral point clamped (3L-NPC) inverter, its simplified version, the 3L-SNPC, uses fewer switching devices to achieve a multi-level output. However, it offers fewer voltage vector selections, limiting its usefulness for motor drive applications. This issue is overcome through a proposed direct torque control (DTC) strategy utilizing the concept of virtual voltage vectors...
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