Optimization of Printed Synchronous Reluctance Rotor Based on Bézier Curves

This paper deals with the optimization of a multi-barrier synchronous reluctance rotor, in which the flux barriers are parameterized using Bézier curves. With this type of modeling, it is possible to explore more complex geometries that can be realized with new additive manufacturing techniques. A two-step optimization based on the NSGA-II genetic algorithm is proposed in the paper. In the first part, barriers are optimized using a simplified analytical model. In the second part, the rotor geometry is optimized using finite element analysis. Finally, a more detailed investigation is performed to calculate the overall performance of the optimized solution and compare them with those of a previously manufactured prototype.