Design and optimization of low torque ripple synchronous reluctance motor

Abstract Synchronous reluctance motors are synchronous motors that contain only reluctance torque. They are characterized by a simple structure, compact size, light weight, and high power density, making them attractive in various applications with promising future prospects. To address the issue of high torque ripple in traditional synchronous reluctance motors, a novel asymmetric motor structure is proposed based on the equivalent magnetic circuit model. This structure features an asymmetric design of the number of magnetic barriers and their occupancy rates. It is modeled and simulated using the finite element software JMAG. Subsequently, genetic algorithms were employed to optimize the span angle of each barrier layer. The outcome is an innovative synchronous reluctance motor with reduced torque ripple. Simulation results demonstrate that this motor exhibits significantly lower torque ripple and superior electromagnetic performance compared to traditional designs.