Optimal Design Study of Metal-as-Insulation HTS Synchronous Motor With Multiple Operating Points for EVs Based on Many-Objective Optimization

This paper presents an optimal design study of a high temperature superconducting (HTS) synchronous motor (HTS-SM) with metal-as-insulation (MI), taking into account multiple operating points relevant to electric vehicles (EVs). To mitigate the charging delay drawback of the no-insulation (NI) technique while retaining its self-quench-protection capability, a stainless steel MI technique is incorporated within the rotor field winding of a partial HTS-SM. Additionally, an optimal design process is proposed that considers various operating points dictated by driving profiles of EVs. The optimization process employs a recent constrained many-objective optimization algorithm (CMaO) to simultaneously handle three or more objectives with constraints. We applied the proposed process to optimize the design of partial HTS-SMs with two distinct MI thicknesses, resulting in Pareto-optimal solutions…