Pareto Optimization in Terms of Electromagnetic and Thermal Characteristics of Air-Cooled Asynchronous Induction Machines Applied in Railway Traction Drives

In terms of electromagnetic and thermal parameters, the utilization of asynchronous induction machines applied in railway traction drives is much higher than those used in industrial drives. Therefore, the multi-physics optimization with respect to electromagnetic and thermal behavior is nowadays one of the most important design tasks with such machines. This paper discusses a novel optimization approach considering the Pareto optimal design to improve both the electromagnetic characteristics and the thermal behavior using a sequential coupling of electromagnetic, thermal, as well as fluid dynamics analyses.