Design and integration of inductive components for a high-frequency 11 kW / 800 V off-board charger for electric vehicl

Conference: CIPS 2020 - 11th International Conference on Integrated Power Electronics Systems
03/24/2020 - 03/26/2020 at Berlin, Deutschland

Proceedings: ETG-Fb. 161: CIPS 2020

Pages: 6Language: englishTyp: PDF

Schmidhuber, Michael; Drexler, Christoph (SUMIDA Components and Modules GmbH, Dr.-Hans-Vogt-Platz 1, 94130 Obernzell, Germany)
Ditze, Stefan; Joffe, Christopher; Ehrlich, Stefan (Fraunhofer Institute for Integrated Systems and Device Technology IISB, Erlangen, Germany)
Arndt, Bastian; Olbrich, Peter; Reindl, Hartwig (AVL Software and Functions GmbH, EMC Engineering/Simulation, Regensburg, Germany)

In this paper an air-cooled 11 kW / 800 V off-board charger with a target power density of 2.2 kW / liter (36 W/in3) is presented. A soft-switched silicon-carbide (SiC)-based power electronic is utilized operating at a high switching frequency of 1 MHz. Thus, the volume of the required transformer for galvanic isolation is considerably reduced. For inductive component design novel low-loss power ferrite materials are applied which are optimized to operate at high frequencies. For electromagnetic compatibility (EMC) an active filter stage is developed and integrated in the total volume of 5 liter.