Modeling and test of a thermosyphon loop for the cooling of a megawatt-range power electronics converter

A thermosyphon loop, designed for the thermal management of a large Medium voltage power converter 5 MW overall, corresponding to a 2.4 kW thermal load per cooling unit) is presented. The device is mainly made of an evaporator, a condenser and a reservoir connected with plastic liquid and vapor line...

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Bibliographic Details
Published in:International Journal of Thermofluids 2022-02, Vol.13, p.100129, Article 100129
Main Authors: Moustaid, Majededdine, Platel, Vincent, Guillet, Martin, Reynes, Hugo, Buttay, Cyril
Format: Article
Language:English
Subjects:
Electric power
Engineering Sciences
Loop Thermosyphon
Novec 649
Passive cooling
Power Electronics
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Summary:A thermosyphon loop, designed for the thermal management of a large Medium voltage power converter 5 MW overall, corresponding to a 2.4 kW thermal load per cooling unit) is presented. The device is mainly made of an evaporator, a condenser and a reservoir connected with plastic liquid and vapor lines. Novec 649 (3M) has been chosen as the working fluid due to environmental and electrical concerns. A model of the loop is described, and its predictions are compared with experiments. A first comparison yields a maximum mean deviation of 20 % between experimental results and numerical simulation at the maximum coolant temperature. The main sources of errors are identified, and improvements are proposed for better model accuracy. [Display omitted] •Selection of an environment-friendly fluid (Novec 649).•Entire model of the loop thermo-syphon is presented.•Experimental validation on a full-scale protype (up to 2400 W thermal load) shows
ISSN:2666-2027
2666-2027
DOI:10.1016/j.ijft.2021.100129