Numerical evaluation on the cooling performance of a wound field synchronous motor with dual cooling passages

Compared to permanent magnet motors using rare-earth metals, a wound field synchronous motors tends to generate more heat due to increased windings, so it is required to consider cooling measures in design. In this study, a 3D computational fluid dynamics simulation and experimental verification of an 80kW Wound Field Synchronous Motor was performed to investigate the cooling performance of dual cooling passages. In order to evaluate the cooling effect of related design factors, a coolant temperature and coolant mass flow rate was considered in the analysis.