Thermal simulations and measurements of 3-phase medium frequency transformer in 100 kW DC-DC converter with 99.2% efficiency - Archive ouverte HAL Access content directly
Conference Papers Year : 2022

Thermal simulations and measurements of 3-phase medium frequency transformer in 100 kW DC-DC converter with 99.2% efficiency

Abstract

This article deals with a 100 kW dual active bridge (DAB) DC-DC converter and a 20 kHz 3-phase medium frequency transformer (MFT). A computational fluid dynamics (CFD) model of the MFT is presented and compared with thermal measurements showing a good fit. The core hotspot is close to the thermal runaway limit. The maximum winding temperature in the normal operating mode results in a comfortable headroom to enable the operation in the degraded mode. Moreover, it is likely that the transformer may be loaded with higher power. The efficiency of the DC-DC converter was measured 99.2% at 100 kW.

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Electric power
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Dates and versions

hal-03659121 , version 1 (04-05-2022)

Identifiers

  • HAL Id : hal-03659121 , version 1

Cite

Piotr Dworakowski, Michał Michna, Andrzej Wilk. Thermal simulations and measurements of 3-phase medium frequency transformer in 100 kW DC-DC converter with 99.2% efficiency. LV International Symposium on Electrical Machines, Apr 2022, Poznań, Poland. pp.6. ⟨hal-03659121⟩
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