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Lookup NU author(s): Dr Rafal Wrobel
This is the authors' accepted manuscript of a conference proceedings (inc. abstract) published in its final definitive form in 2023. For re-use rights please refer to the publishers terms and conditions.
This paper presents analysis of eddy-current power loss in heat pipes (HPs) for integrated thermal management of electrical machines. Here, a close integration of HPs with winding body is considered. Such an arrangement is particularly attractive, as it targets the main heat source within the machine assembly. However, there are several challenges associated with the subsystem compatibility, which include electromagnetic, thermal, and mechanical design aspects. The HP’s power loss, which is generated as a results of the time varying stator and/or rotor slot magnetic flux leakage, requires careful considerations. Although, the HP-enabled thermal management of electrical machines (electrical windings) has been previously investigated, the additional HP generated power loss has had a very little attention. In this work, the author explores alternative techniques for accurate predictions of HP generated power loss accounting for the HP’s wick structure. Two alternative HP constructions Copper-Water and Titanium-Water with sintered and mesh wicks have been investigated in this analysis. Both theoretical finite element (FE) electromagnetic and experimental methods are discussed in detail. The results suggest that the experiment informed FE model of HP with an equivalent electrical resistivity wick region provides an accurate HP representation useful in design of electrical machines.
Author(s): Wrobel R
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: Compumag 2023
Year of Conference: 2023
Online publication date: 26/05/2023
Acceptance date: 22/03/2023
Date deposited: 19/07/2023
ePrints DOI: 10.57711/j58k-me67