Innovative and highly integrated modular electric drivetrain
Journal article, 2019

A highly integrated electric drivetrain module with 157 kW peak power is presented, which incorporates novel technologies in the field of electric machines, power electronics and transmissions: 1. High-speed electric machine with six phases and injection mould polymer-bonded magnets; 2. High-ratio dual-speed transmission with double planetary gear set (Ravigneaux gear set); 3. Gallium nitride (GaN) power electronics with winding reconfiguration feature. The combination of these components in one single housing makes the drive module flexible to integrate and to combine with conventional or alternative propulsion technologies, thus allowing various hybrid and electric drivetrain topologies. All technologies are selected in accordance with mass production potential and can therefore have a high impact on the automotive market in the future. Currently, the drive module is under development; the first models will be assembled in winter 2019. The integration into a demonstrator vehicle in 2020 will prove the potential of many new technologies and the suitability for the automotive market.

Hybrid synchronous machine

Holistic drivetrain design

Multi-phase electric machine

Electric drive module

Injection moulding

Gallium nitride

Ravigneaux gear set


Jonas Hemsen

RWTH Aachen University

Daniel Kieninger

RWTH Aachen University

Lutz Eckstein

RWTH Aachen University

Mathias R Lidberg

Chalmers, Mechanics and Maritime Sciences (M2), Vehicle Engineering and Autonomous Systems

Henk Huisman

Eindhoven University of Technology

Juris Arrozy

Eindhoven University of Technology

Elena A. Lomonova

Eindhoven University of Technology

Daniel Oeschger

BRUSA Elektronik AG

Charley Lanneluc

The French Alternative Energies and Atomic Energy Commission (CEA)

Olivier Tosoni

The French Alternative Energies and Atomic Energy Commission (CEA)

Patrick Debal

Punch Powertrain NV

Michael Ernstorfer

MAHLE ZG Transmissions GmbH

Rémi Mongellaz

Siemens SAS

World Electric Vehicle Journal

2032-6653 (ISSN)

Vol. 10 4 89

Subject Categories

Other Engineering and Technologies not elsewhere specified

Energy Systems

Other Electrical Engineering, Electronic Engineering, Information Engineering



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