Thermal modelling of totally enclosed fan-cooled motors via conjugate heat transfer analysis and air-flow measurements

摘要

This paper undertakes an investigation into the thermal modelling of Totally Enclosed Fan-Cooled (TEFC) motors used in traction applications. In the process, a 3D Computational Fluid Dynamics (CFD)-based Conjugate Heat Transfer (CHT) model is utilized, employing a realistic stator geometry that includes the cooling channels. Extended air flow measurement data and loss distributions obtained via a transient electromagnetic Finite Element (FE) model are used in the process of heat source definition. Additionally, a simplified net radiation model is integrated in the boundary definitions. The methodology developed is applied for the thermal characterization of a prototype IPM motor.