Simplification of Thermal Networks for Magnetic Components in Space Power Electronics

David de la Hoz, Guillermo Salinas, Vladimir Šviković and Pedro Alou
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David de la Hoz: Centro de Electrónica Industrial, Universidad Politécnica de Madrid, 28006 Madrid, Spain
Guillermo Salinas: Centro de Electrónica Industrial, Universidad Politécnica de Madrid, 28006 Madrid, Spain
Vladimir Šviković: Thales Alenia Space, 28760 Tres Cantos, Spain
Pedro Alou: Centro de Electrónica Industrial, Universidad Politécnica de Madrid, 28006 Madrid, Spain

Energies, 2020, vol. 13, issue 11, 1-26

Abstract: The volume of magnetic components for space applications, directly related to the launch cost, and their performance are critically influenced by their capability to dissipate the internal electromagnetic power losses. This is the reason why accurate thermal models are required. Furthermore, these models need to be simple and versatile to allow a fast analysis of many different designs. In this study, a specific methodology to analyze inductors and transformers by thermal networks and a simplification based on the Thevenin’s theorem leading to a simple equation are proposed. The specific details to address thermal modelling for space magnetic components are discussed. A generic 50 W Flyback transformer for space applications is analyzed in this study and experimental validation is provided, showing that the proposed method leads to a deviation in the temperature estimation between 1 °C and 5 °C, which is considered quite a good result from the literature review carried out.

Keywords: thermal network; power electronics; magnetic component; space application (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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