1 Executive Summary

For all the use cases the progress is given of the various partners (AVL, TNO, ViF, VUB, Heliox) actively participating in task 4.1.1, in which innovative direct and indirect cooling concepts are developed. Within use case 1 TNO developed a flow boiling model based on suitable working fluids specifically for electrification test systems using modular concepts and embedded power electronics. Next, AVL performed a thermal simulation of the cooling design for the SiC 1200 V converter based on the input data provided by the project partner FHJ.

Within use case 2 VUB has been working on heat sink design, suitable cooling method selection, thermal simulations and design optimization using a Finite Elements 3D CFD/Thermal package. Next, I&M is developing a real-time thermal twin model as part of task 4.2.1.

Within use case 3 ViF contributes with principle thermal investigations and thermal simulations using surface enhancing structures (e.g., ribbons and fins) for automotive inverters. These allow to develop an innovative cooling concept High Power 48 V DC/AC Inverter. Additionally, RWTH develops a real-time active thermal management system to increase the utilization of inverters, as part of task 4.2.1.

Within use case 4 Heliox and VUB will realise a Multi-use DC-charger as demonstrator for simultaneously 

charging different kind of vehicles (heavy duty, personal cars, light trucks). To this end the requirements, 

thermal simulations and the demonstrator design will be made.

Within use case 5 VUB and PWD make an overview of various cooling methods to control temperature for 

OBC. As a next step, possible cooling methods and their thermal performance will be calculated on Finite Elements 3D CFD/Thermal package. Furthermore, TNO made an extensive literature overview comparing various cooling methods, which can be applied to OBC. Finally, FLAG implements a real-time discretized model of the switches power losses, as part of task 4.2.1.