Thermal Finite-Element Model of an Electric Machine Cooled by a Spray
Computational Engineering, Finance, and Science
2025-01-07 v2
Abstract
The need for higher power density in electrical machines require better cooling strategies. Spray cooling is a very promising and relatively simple technology to apply, but involves extremely complicated physics. In this paper, a quasi-3D thermal finite-element model of a stator winding is created, by extrusion of a 2D cross-sectional finite-element model along the winding direction. The possible effects of spray cooling are simulated as a heat flux using an impedance boundary condition at the surface of the winding overhang. The results confirm the beneficial performance of spray cooling. The model indicates that spray cooling may allow a ten times larger power density than for standard air- or water-cooled machines.
Keywords
Cite
@article{arxiv.2410.21875,
title = {Thermal Finite-Element Model of an Electric Machine Cooled by a Spray},
author = {Christian Bergfried and Samaneh Abdi Qezeljeh and Ilia V. Roisman and Herbert De Gersem and Jeanette Hussong and Yvonne Späck-Leigsnering},
journal= {arXiv preprint arXiv:2410.21875},
year = {2025}
}