Dual LUT-Based DTC Strategy for Optimized Energy Efficiency in Electric Vehicles Powertrains

This paper proposes a refined Direct Torque Control (DTC) strategy for Open-end Winding Induction Motors (OEWIMs). The scheme combats torque ripple and flux demagnetizing with dual Look-Up Tables and a novel five-level hysteresis torque controller. It strategically employs zero voltage vectors for enhanced torque performance at high speeds. The result has lower Total Harmonic Distortion (THD), reduced switching frequency, and better efficiency while maintaining the core advantages of traditional DTC. Comprehensive experimental findings demonstrate the usefulness of the proposed DTC technique.