Work

Thermal Analysis of a Rotor Oil Jet Cooled Electric Motor with Hairpin Windings

Year: 2025

Type: conference-paper

Abstract: This paper proposes a hybrid multiphase CFD modeling approach to analyze the heat transfer in a rotor oil jet cooled electric motor. The model incorporates a detailed and representative end-winding geometry of a state-of-the-art electric motor with hairpin windings. The end-winding oil flow distribution and convective heat transfer is studied. The resulting convective heat transfer coefficients are imported into a multi-sector lumped parameter model of the stator assembly. The model is used to evaluate the maximum continuous cooling performance of the cooling concept for two different speeds and flow rates.

Source: IEEE Workshop on Electrical Machines Design, Control and Diagnosis

DOI: 10.1109/wemdcd61816.2025.11014150

Authors: Steven Vanhee, Jaywant Pawar, Frederik Desmet, Jasper Nonneman, Michel De Paepe

Institutions: Kalpavriksh, Papal Seminary, Ghent University

Language: English

Topic: Electric Motor Design and Analysis

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funder: Universiteit Gent