Theoretical study on torque ripples generation in Permanent Magnet Synchronous Machines

In this study a new method used to minimize the torque ripples generated in Permanent Magnet Synchronous Machines (PMSM). The Iterative Learning Control (ILC) method is adopted for the minimization of torque ripples for a vector controlled surface-mounted PMSM. The ILC is a new technique used to compensate torque and speed ripples for PMSM drives. The novelty of the research presented in this paper is that the PMSM is modeled by the time-stepping finite element method (FEM), which proved to provide high accuracy. The results of the new technique are found to be very promising.