Title :
Improved thermal design of a high frequency power transformer
Author :
Stadler, Alexander ; Gulden, Christof
Author_Institution :
STS Spezial-Transformatoren-Stockach GmbH & Co. KG, Stockach, Germany
fDate :
Aug. 30 2011-Sept. 1 2011
Abstract :
In this paper the thermal management of a high frequency power transformer is investigated. To begin with, it is shown how the total power loss of such a device can be easily predicted. Based on the results, the temperature distribution inside the transformer is simulated. It is demonstrated how different cooling conditions affect the hot-spot temperature. Copper coil formers to improve the thermal connection between coil/core and the bottom plate of the transformer are presented. Further, the effect of insulation material with improved thermal conductivity is investigated. Different transformer prototypes were realized to illustrate the practical capability of the applied thermal model. All simulation is based on finite element method (FEM) and verified by means of experimental data drawn from various electrical and thermal measurements.
Keywords :
finite element analysis; high-frequency transformers; power transformers; temperature distribution; thermal conductivity; applied thermal model; finite element method; high frequency power transformer; temperature distribution; thermal conductivity; thermal design; thermal management; Coils; Copper; Finite element methods; Mathematical model; Power transformers; Solid modeling; Windings; Device simulation; Passive component; Thermal design; Transformer;
Conference_Titel :
Power Electronics and Applications (EPE 2011), Proceedings of the 2011-14th European Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-61284-167-0
Electronic_ISBN :
978-90-75815-15-3
