Torque Ripple Reduction in SynRM Drives Using a Modified Rotor Structure and Field Oriented Control

ABSTRACT

The powertrain system is vital for the efficient propulsion of electric vehicles. Although permanent magnet synchronous motors and brushless DC motors are popular for their performance, their reliance on rare‐earth magnets leads to higher costs and supply chain issues. Synchronous reluctance motors provide an efficient alternative by eliminating the rare‐earth permanent magnets. However, synchronous reluctance motors experience significant torque ripple due to the varying magnetic reluctance and stator current harmonics. This article proposes a synchronous reluctance motor drive with significantly reduced torque ripple through rotor structure modification and field oriented control. The novelty of this work lies in the modified rotor structure, which significantly reduces torque ripple in the synchronous reluctance motor. The proposed rotor topology is validated through finite‐element analysis in ANSYS Maxwell. A field‐oriented control strategy is developed and evaluated in MATLAB for the proposed SynRM drive to improve current regulation and dynamic performance, and is experimentally implemented on a laboratory SynRM platform to verify the practical feasibility and real‐time performance of the control architecture.