Direct Torque Control of PMSM following Advanced Duty Ratio Modulation with MTPA Scheme

This research paper apprises the design and analysis of a duty ratio modulated modified DTC-based Permanent Magnet Synchronous Motor (PMSM) drive. Torque ripple and stator flux ripple are the main concern of the traditional direct torque control (DTC) scheme. Torque ripple and stator flux ripple can be somewhat reduced using duty ratio modulated direct torque control (DDTC). The standard DDTC is once again tweaked for more durable applications to get reduced ripple content in torque and flux. This study combines the MTPA methodology with the DDTC scheme to improve the accuracy of the duty ratio computation to effectively enhance the performance.