Experimental Assessment of PMSM with Stator Winding Design Optimization to Enhance HF-EMC Performance in Aircraft Applications

This paper presents experimental tests and comparisons focused on the high-frequency electromagnetic compatibility (HF-EMC) of a high-speed permanent magnet synchronous machine (PMSM). For the same PMSM, two different versions of stators are considered. They differ in the stator-winding design, where the second one incorporates a multidisciplinary optimization (MDO) process, aimed at improving the machine’s EMC performance. A high-speed PMSM usually applied in a Vapor Cycle System (VCS), typically found in aircraft cooling systems, is considered as a case study. Their HF impact and performances in terms of common-mode (CM) and differential-mode (DM) impedances are addressed, as well as in terms of conducted EMI disturbances in a 10-kW powertrain setup. The HF-EMC assessment of the machine may be useful for further optimization designs regarding stator-windings variability design when EMC performance is a priority.