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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Thermal Design of Power Transformers via CFD
Author(s)
Ralf Wittmaack
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DOI:10.17265/1934-8975/2015.01.012
Affiliation(s)
ABSTRACT
At Siemens, an in-house CFD (computational fluid dynamics) code UniFlow is used to investigate fluid flow and heat transfer in oil-immersed and dry-type transformers, as well as transformer components like windings, cores, tank walls, and radiators. This paper outlines its physical models and numerical solution methods. Furthermore, for oil-immersed transformers, it presents an application to a HV (high voltage) winding in a traction transformer of locomotives, cooled by synthetic ester.
KEYWORDS
Thermal design, CFD, physical models, numerical methods
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