Thermal finite element modeling and simulation of a squirrel-cage induction machine

Issue title: Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering

Guest editors: P. Di Barba, Roberto Galdi, M.E. Mognaschi and S. Wiak

Article type: Research Article

Authors: Bergfried, Christian^{a; b;} | Späck-Leigsnering, Yvonne^{a; b} | Seebacher, Roland^c | Eickhoff, Heinrich^d | Muetze, Annette^c

Affiliations: [a] Institute for Accelerator Science and Electromagnetic Fields (TEMF), TU Darmstadt, Germany | [b] Graduate School of Excellence Computational Engineering, Darmstadt, Germany | [c] Electric Drives and Machines Institute (EAM), TU Graz, Austria | [d] Silicon Austria Labs GmbH, Graz, Austria

Correspondence: [*] Corresponding author: Christian Bergfried, Institute for Accelerator Science and Electromagnetic Fields (TEMF), TU Darmstadt, Germany; and Graduate School of Excellence Computational Engineering, 64293 Darmstadt, Germany. Tel.: +4961511624028; E-mail: [email protected]

Abstract: Finite element models of electrical machines allow insights in electrothermal stresses which endanger the insulation system of the machine. This paper presents a thermal finite element model of a 3.7 kW squirrel-cage induction machine. The model resolves the conductors and the surrounding insulation materials in the stator slots. A set of transient thermal scenarios is defined and measured in the machine laboratory. These data are used to assess the finite element model.

Keywords: Finite element method, electrical machines, insulation system, thermal stresses, numerical field simulation

DOI: 10.3233/JAE-230233

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 76, no. 1-2, pp. 147-160, 2024