Powertrain modularity

This deliverable reports on the switching tests validating the driver design of the highpower 150 kW hybrid T-Type converter for the RHODaS project. The study addresses the challenges of integrating Wide Band Gap (WBG) semiconductors, specifically Gallium Nitride (GaN) and Silicon Carbide (SiC), in high-voltage configurations to enhance efficiency. While the initial prototype faced reliability issues, a redesign utilising GaN Systems devices (GS66516B) and negative turn-off voltage successfully mitigated parasitic turn-on risks. Experimental analysis confirmed robust operation up to 1000 V. However, high commutation loop inductance (≈100 nH) necessitated limiting switching rise times to 70100 ns via adjusted gate parameters (Rgate=22 Ω, Cgate=4.7 nF). This adjustment prioritised reliability over minimal switching losses. Regarding control, whilst advanced CBPWM and SPWM strategies were implemented in the System on Chip (SoC), some constraints prevented their full experimental validation. Thus, standard Space Vector Modulation (SVPWM) will be employed for final testing.  In conclusion, the project delivered a robust GaN stage capable of 1000 V operation, though the validation of custom modulation techniques remains pending. 

The RHODaS Webinar Series presents four interconnected sessions exploring the latest European research on next-generation electric powertrain technologies. Hosted by the RHODaS consortium under the Horizon Europe framework, funded by ‪the European Commission‬ and as part of the E-VOLVE Cluster, the webinar series will feature insights from the RHODaS, SCAPE, ‪Maxima‬ and EM-TECH projects, bringing together leading experts in power electronics, digital systems, and sustainability. Each webinar focuses on a specific technological domain critical to the electrification of transport — from component design and thermal management to digital intelligence and circularity. Together, they illustrate how European research is transforming electric mobility through efficiency, reliability, and environmental responsibility. 

This opening session delves into the design of hybrid wide bandgap converters and modular architectures for electric vehicles. Presentations from RHODaS and SCAPE will discuss innovative SiC/GaN topologies, design challenges such as parasitic inductances and layout constraints, and scalable approaches for vehicle power conversion systems.

The transition to e-mobility is disrupting the automotive market. To facilitate this transition, the European Commission with the support of the 2ZERO partnership is calling for experts to engage in collaborative R&D programs, and develop pre-competitive solutions and methodologies supporting the uptake of e-mobility. The target of this paper is to provide an overview of the granted European projects running under the umbrella of the E-VOLVE cluster, illustrating the complementarity of the different initiatives as well as their coverage of the main priorities as defined by ERTRAC. The focus is set on the targets and outcomes of the projects HiPE, HighScape, RHODaS, SCAPE, EM-TECH and Multi-Moby, addressing innovative components (power electronics, e-motors), advanced control strategies, and circularity for safe, efficient, affordable and sustainable e-mobility.